1,098 results match your criteria Mycorrhiza[Journal]


Morphological and physiological responses of the external mycelium of Rhizophagus intraradices to water stress.

Mycorrhiza 2019 Jan 14. Epub 2019 Jan 14.

Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México-Campus Morelia, Apartado Postal 27-3 Santa María de Guido, 58090, Morelia, Michoacán, Mexico.

Most studies dealing with mycorrhizal associations and drought have focused on the plants, not on the fungi, and tolerance and adaptations of arbuscular mycorrhizal (AM) fungi to cope with water stress are virtually unknown. This study was conducted to assess how water stress directly affects an AM fungus isolate, particularly through morphological and physiological changes in the external mycelium. We used two-compartment pots separated by mesh and an air gap that allowed us to apply water stress treatments only to the external mycelium. Read More

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http://dx.doi.org/10.1007/s00572-019-00880-8DOI Listing
January 2019

Plant-mediated partner discrimination in ectomycorrhizal mutualisms.

Mycorrhiza 2019 Jan 7. Epub 2019 Jan 7.

Department of Plant & Microbial Biology, University of Minnesota, Saint Paul, MN, 55108, USA.

Although ectomycorrhizal fungi have well-recognized effects on ecological processes ranging from plant community dynamics to carbon cycling rates, it is unclear if plants are able to actively influence the structure of these fungal communities. To address this knowledge gap, we performed two complementary experiments to determine (1) whether ectomycorrhizal plants can discriminate among potential fungal partners, and (2) to what extent the plants might reward better mutualists. In experiment 1, split-root Larix occidentalis seedlings were inoculated with spores from three Suillus species (S. Read More

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http://dx.doi.org/10.1007/s00572-018-00879-7DOI Listing
January 2019

Abiotic contexts consistently influence mycorrhiza functioning independently of the composition of synthetic arbuscular mycorrhizal fungal communities.

Mycorrhiza 2019 Jan 5. Epub 2019 Jan 5.

Institute of Botany, The Czech Academy of Sciences, Zámek 1, 252 43, Průhonice, Czech Republic.

The relationship between mycorrhiza functioning and composition of arbuscular mycorrhizal (AM) fungal communities is an important but experimentally still rather little explored topic. The main aim of this study was thus to link magnitude of plant benefits from AM symbiosis in different abiotic contexts with quantitative changes in AM fungal community composition. A synthetic AM fungal community inoculated to the model host plant Medicago truncatula was exposed to four different abiotic contexts, namely drought, elevated phosphorus availability, and shading, as compared to standard cultivation conditions, for two cultivation cycles. Read More

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http://dx.doi.org/10.1007/s00572-018-00878-8DOI Listing
January 2019

Influence of annual climatic variations, climate changes, and sociological factors on the production of the Périgord black truffle (Tuber melanosporum Vittad.) from 1903-1904 to 1988-1989 in the Vaucluse (France).

Mycorrhiza 2019 Jan 3. Epub 2019 Jan 3.

Université de Lorraine, Inra, IAM, 54000, Nancy, France.

From 1903-1904 to 1988-1989, the two World Wars and sociological factors as rural desertification and changes in land uses mainly explained the decline of black truffle production in the Vaucluse department, which well reflects that of the whole of France. These can be correlated with the annual climatic variations as well as, from 1924-1925 to 1948-1949, the raw production rates of the managed truffle orchard of Pernes-les-Fontaines located in Vaucluse. The two methods used (correlation coefficients and Bayesian functional linear regression with Sparse Step functions) gave consistent results: the main factor explaining the annual variations of truffle production was the summer climatic water deficit of the year n. Read More

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http://dx.doi.org/10.1007/s00572-018-0877-1DOI Listing
January 2019

Leaf litter species identity influences biochemical composition of ectomycorrhizal fungi.

Mycorrhiza 2018 Dec 13. Epub 2018 Dec 13.

Forest Botany and Tree Physiology, University of Goettingen, Buesgenweg 2, 37077, Goettingen, Germany.

In forest ecosystems, ectomycorrhizal (ECM) fungi are important for plant growth and soil biogeochemical processes. The biochemical composition of ECM mycelium is an important fungal effect trait with consequences for its decomposition rate, and consequently on soil carbon pools and plant nutrition. Although the link between ECM fungi and leaf litter-released nutrients is well known, the response of ECM fungal biochemical composition to different leaf litter species remains poorly understood. Read More

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http://dx.doi.org/10.1007/s00572-018-0876-2DOI Listing
December 2018
1 Read

Tracing Rhizophagus irregularis isolate IR27 in Ziziphus mauritiana roots under field conditions.

Mycorrhiza 2019 Jan 21;29(1):77-83. Epub 2018 Nov 21.

Laboratoire des Symbioses Tropicales et Méditerranéennes UMR113 INRA/AGRO-M/CIRAD/IRD/UM2-TA10/J, Campus International de Baillarguet, 34398, Montpellier, France.

Arbuscular mycorrhizal fungi (AMF) play a major role as biofertilizer for sustainable agriculture. Nevertheless, it is still poorly documented whether inoculated AMF can successfully establish in field soils as exotic AMF and improve plant growth and productivity. Further, the fate of an exogenous inoculum is still poorly understood. Read More

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http://link.springer.com/10.1007/s00572-018-0875-3
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http://dx.doi.org/10.1007/s00572-018-0875-3DOI Listing
January 2019
2 Reads

Can arbuscular mycorrhizal fungi from non-invaded montane ecosystems facilitate the growth of alien trees?

Mycorrhiza 2019 Jan 15;29(1):39-49. Epub 2018 Nov 15.

Instituto Multidisciplinario de Biología Vegetal (CONICET), Universidad Nacional de Córdoba, Casilla de Correo 495, X5000, Córdoba, Argentina.

It is generally assumed that recruitment and expansion of alien species along elevation gradients are constrained by climate. But, if plants are not fully constrained by climate, their expansion could be facilitated or hindered by other factors such as biotic interactions. Here, we assessed the composition of arbuscular mycorrhizal fungi (AMF) in soils along an elevation gradient (i. Read More

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http://link.springer.com/10.1007/s00572-018-0874-4
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http://dx.doi.org/10.1007/s00572-018-0874-4DOI Listing
January 2019
9 Reads

Common mycorrhizal networks influence the distribution of mineral nutrients between an invasive plant, Solidago canadensis, and a native plant, Kummerowa striata.

Mycorrhiza 2019 Jan 12;29(1):29-38. Epub 2018 Nov 12.

MOE Key Laboratory of Biosystems Homeostasis & Protection, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.

Invasive species often reduce ecosystem services and lead to a serious threat to native biodiversity. Roots of invasive plants are often linked to roots of native plants by common mycorrhizal networks (CMNs) of arbuscular mycorrhizal (AM) fungi, but whether and how CMNs mediate interactions between invasive and native plant species remains largely uninvestigated. We conducted two microcosm experiments, one in which we amended the soil with mineral N and another in which we amended the soil with mineral P. Read More

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http://link.springer.com/10.1007/s00572-018-0873-5
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http://dx.doi.org/10.1007/s00572-018-0873-5DOI Listing
January 2019
6 Reads

Tricholoma matsutake may take more nitrogen in the organic form than other ectomycorrhizal fungi for its sporocarp development: the isotopic evidence.

Mycorrhiza 2019 Jan 8;29(1):51-59. Epub 2018 Nov 8.

Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, Japan.

Tricholoma matsutake is an ectomycorrhizal (ECM) fungus capable of in vitro saprotrophic growth, but the sources of C and N used to generate sporocarps in vivo are not well understood. We examined natural abundance isotope data to investigate this phenomenon. For this purpose, C, N and their stable isotopes (C, N) content of fungal sporocarps and their potential nutrient sources (i. Read More

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http://link.springer.com/10.1007/s00572-018-0870-8
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http://dx.doi.org/10.1007/s00572-018-0870-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6311186PMC
January 2019
5 Reads

Atmospheric drought and low light impede mycorrhizal effects on leaf photosynthesis-a glasshouse study on tomato under naturally fluctuating environmental conditions.

Mycorrhiza 2019 Jan 31;29(1):13-28. Epub 2018 Oct 31.

Leibniz-Institute of Vegetable and Ornamental Crops e.V., Theodor-Echtermeyer-Weg 1, 14979, Großbeeren, Germany.

Arbuscular mycorrhiza fungi (AMF) consume plant carbon and impact photosynthesis, but effects of AMF on plant gas exchange are transient and hardly predictable. This is at least partially because plant-internal nutrient-, water-, and sink-related effects, which can be influenced AMF, and atmospheric conditions integrate at the photosynthesis level. In nature and in plant production, plants face periodical and random short-term switches of environmental conditions that limit photosynthesis, which may impede stimulatory effects of AMF on leaf photosynthetic capacities. Read More

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http://link.springer.com/10.1007/s00572-018-0872-6
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http://dx.doi.org/10.1007/s00572-018-0872-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6311195PMC
January 2019
1 Read

The arbuscular mycorrhizal fungus Rhizophagus irregularis MUCL 43194 induces the gene expression of citrate synthase in the tricarboxylic acid cycle of the phosphate-solubilizing bacterium Rahnella aquatilis HX2.

Mycorrhiza 2019 Jan 27;29(1):69-75. Epub 2018 Oct 27.

Earth and Life Institute, Applied microbiology, Mycology, Université catholique de Louvain, Croix du sud 2, bte L7.05.06, 1348, Louvain-la-Neuve, Belgium.

An increasing number of studies have demonstrated that arbuscular mycorrhizal fungi can cooperate with other soil microorganisms, e.g., bacteria, which develop near or on the surface of the extraradical hyphae where they perform multiple functions. Read More

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http://link.springer.com/10.1007/s00572-018-0871-7
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http://dx.doi.org/10.1007/s00572-018-0871-7DOI Listing
January 2019
6 Reads

Conceptual differences lead to divergent trait estimates in empirical and taxonomic approaches to plant mycorrhizal trait assignment.

Mycorrhiza 2019 Jan 15;29(1):1-11. Epub 2018 Oct 15.

Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 40 Lai St, 51005, Tartu, Estonia.

Empirical and taxonomic approaches are the two main methods used to assign plant mycorrhizal traits to species lists. While the empirical approach uses only available empirical information, the taxonomic approach extrapolates certain core information about plant mycorrhizal types and statuses to related species. Despite recent claims that the taxonomic approach is now almost definitive, with little benefit to be gained from further empirical data collection, it has not been thoroughly compared with the empirical approach. Read More

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http://dx.doi.org/10.1007/s00572-018-0869-1DOI Listing
January 2019

Transcriptome responses in wheat roots to colonization by the arbuscular mycorrhizal fungus Rhizophagus irregularis.

Mycorrhiza 2018 Nov 24;28(8):747-759. Epub 2018 Sep 24.

Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.

The influence of arbuscular mycorrhizal (AM) colonization on the expression of genes in the roots of wheat (Triticum aestivum L.) at the transcriptome level is largely unknown. A pot experiment was established to study the responses of the transcriptome profile in the roots of wheat to colonization by the AM fungus Rhizophagus irregularis using high through-put sequencing methods. Read More

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http://dx.doi.org/10.1007/s00572-018-0868-2DOI Listing
November 2018

Mycelium of Terfezia claveryi as inoculum source to produce desert truffle mycorrhizal plants.

Mycorrhiza 2018 Oct 20;28(7):691-701. Epub 2018 Sep 20.

Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100, Murcia, Spain.

Terfezia claveryi Chatin was the first desert truffle species to be cultivated, the mycorrhizal plants being successfully produced by using both desert truffle spores and mycelia. However, it is more advisable to use mycelium than spores whenever possible and profitable. Given the low yields of mycelia obtained using traditional culture methods of this truffle, the medium composition was modified in an attempt to determine its nutritional requirements. Read More

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http://dx.doi.org/10.1007/s00572-018-0867-3DOI Listing
October 2018
5 Reads

AM fungi facilitate the competitive growth of two invasive plant species, Ambrosia artemisiifolia and Bidens pilosa.

Mycorrhiza 2018 Nov 15;28(8):703-715. Epub 2018 Sep 15.

State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection Chinese Academy of Agricultural Sciences, Beijing, 100081, China.

Invasive species often cause enormous economic and ecological damage, and this is especially true for invasive plants in the Asteraceae family. Arbuscular mycorrhizal fungi (AMF) play an important role in the successful invasion by exotic plant species because of their ability to promote growth and influence interspecific competition. However, few studies have evaluated the effects of invasive Asteraceae species on AMF diversity and how feedback mechanisms during competition with native species subsequently affect the accumulation of nutrient resources. Read More

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http://dx.doi.org/10.1007/s00572-018-0866-4DOI Listing
November 2018
1 Read

Mycorrhizal microbiomes.

Mycorrhiza 2018 Sep 12. Epub 2018 Sep 12.

Interactions Arbres-Microorganismes, INRA, UMR 1136, 54280, Champenoux, France.

This Mycorrhiza issue groups topical papers based on presentations and discussions at the Mycorrhizal Microbiomes session at 9th International Conference on Mycorrhiza, Prague, Czech Republic, August 2017. The five articles that appear in this special issue advance the field of mycorrhizal microbiomes, not simply by importing ideas from an emerging area, but by using them to inform rich and methodologically grounded research. The aim of this special issue is to explore the interactions between mycorrhizal fungi and surrounding complex environments from a distinct but complementary point of view, highlighting the large spectrum of unknowns that still need to be explored. Read More

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http://dx.doi.org/10.1007/s00572-018-0865-5DOI Listing
September 2018
2 Reads

Biogeography of arbuscular mycorrhizal fungi (Glomeromycota): a phylogenetic perspective on species distribution patterns.

Mycorrhiza 2018 Oct 5;28(7):587-603. Epub 2018 Sep 5.

West Virginia University, 1090 Agricultural Sciences Building, Morgantown, WV, 26506, USA.

Information on the biogeography of arbuscular mycorrhizal fungi (AMF) is important because this group of obligately symbiotic soil microbes is a ubiquitous and functionally critical component of terrestrial ecosystems. In this paper, we utilize a biogeography database summarizing data on AMF species distribution linked to geographic and environmental conditions to describe global distribution patterns and interpret these patterns within a phylogenetic perspective. The data were obtained from accessions in living culture collections (INVAM, CICG), species descriptions, and other published literature from 1960 to 2012. Read More

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http://dx.doi.org/10.1007/s00572-018-0864-6DOI Listing
October 2018

Influence of leaf damage by the horse chestnut leafminer (Cameraria ohridella Deschka & Dimić) on mycorrhiza of Aesculus hippocastanum L.

Mycorrhiza 2019 Jan 25;29(1):61-67. Epub 2018 Aug 25.

Department of Mycology and Mycorrhiza, Kazimierz Wielki University, Al. Ossolinskich 12, 59-093, Bydgoszcz, Poland.

In many parts of Europe, the white horse chestnut (Aesculus hippocastanum L.) has been attacked by the horse chestnut leafminer (Cameraria ohridella Deschka & Dimić), which causes premature leaf dieback. A. Read More

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http://dx.doi.org/10.1007/s00572-018-0862-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6311180PMC
January 2019

Rapid temporal changes in root colonization by arbuscular mycorrhizal fungi and fine root endophytes, not dark septate endophytes, track plant activity and environment in an alpine ecosystem.

Mycorrhiza 2018 Nov 23;28(8):717-726. Epub 2018 Aug 23.

Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309-0334, USA.

Fungal root endophytes play an important role in plant nutrition, helping plants acquire nutrients in exchange for photosynthates. We sought to characterize the progression of root colonization by arbuscular mycorrhizal fungi (AMF), dark septate endophytes (DSE), and fine root endophytes (FRE) over an alpine growing season, and to understand the role of the host plant and environment in driving colonization levels. We sampled four forbs on a regular schedule from June 26th-September 11th from a moist meadow (3535 m a. Read More

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http://dx.doi.org/10.1007/s00572-018-0863-7DOI Listing
November 2018

The arbuscular mycorrhizal fungus Rhizophagus irregularis MUCL 41833 increases the phosphorus uptake and biomass of Medicago truncatula, a benzo[a]pyrene-tolerant plant species.

Mycorrhiza 2018 Nov 18;28(8):761-771. Epub 2018 Aug 18.

Earth and Life Institute, Applied Microbiology, Mycology, Université catholique de Louvain, Croix du Sud, 2 box L7.05.06, 1348, Louvain-la-Neuve, Belgium.

The accumulation of phosphorus (P) in plants increases their biomass and resistance/tolerance to organic pollutants. Both characteristics are mandatory for the utilization of plants in phytoremediation. Arbuscular mycorrhizal (AM) fungi improve plant P nutrition, and thus growth. Read More

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http://link.springer.com/10.1007/s00572-018-0861-9
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http://dx.doi.org/10.1007/s00572-018-0861-9DOI Listing
November 2018
8 Reads

Plant host habitat and root exudates shape fungal diversity.

Mycorrhiza 2018 Aug 15;28(5-6):451-463. Epub 2018 Aug 15.

CNRS, UMR5557, Ecologie Microbienne, INRA, UMR1418, Université Lyon 1, 69220, Villeurbanne Cedex, France.

The rhizospheric microbiome is clearly affected by plant species and certain of their functional traits. These functional traits allow plants to adapt to their environmental conditions by acquiring or conserving nutrients, thus defining different ecological resource-use plant strategies. In the present study, we investigated whether plants with one of the two nutrient-use strategies (conservative versus exploitative) could influence fungal communities involved in soil organic matter degradation and root exudate assimilation, as well as those colonizing root tissues. Read More

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http://dx.doi.org/10.1007/s00572-018-0857-5DOI Listing
August 2018
20 Reads

Ectomycorrhizae formed by three Japanese truffle species (Tuber japonicum, T. longispinosum, and T. himalayense) on indigenous oak and pine species.

Mycorrhiza 2018 Oct 14;28(7):679-690. Epub 2018 Aug 14.

Department of Mushroom Science and Forest Microbiology, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan.

Modern truffle cultivation systems started in Europe in the early 1970s and are now successfully used for several European truffles throughout the world. However, systems for indigenous novel truffle species need to be developed in several regions, especially where truffle cultivation has not been attempted so far, such as in Japan. Recently, two new and one known truffle species that are expected to be edible were reported from Japan: Tuber japonicum, T. Read More

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http://dx.doi.org/10.1007/s00572-018-0860-xDOI Listing
October 2018
6 Reads

A pulse of summer precipitation after the dry season triggers changes in ectomycorrhizal formation, diversity, and community composition in a Mediterranean forest in California, USA.

Mycorrhiza 2018 Oct 13;28(7):665-677. Epub 2018 Aug 13.

Center for Conservation Biology, University of California, Riverside, CA, 92521, USA.

Rapid responses of microbial biomass and community composition following a precipitation event have been reported for soil bacteria and fungi, but measurements characterizing ectomycorrhizal fungi remain limited. The response of ectomycorrhizal fungi after a precipitation event is crucial to understanding biogeochemical cycles and plant nutrition. Here, we examined changes in ectomycorrhizal formation, diversity, and community composition at the end of a summer drought and following precipitation events in a conifer-oak mixed forest under a semiarid, Mediterranean-type climate in CA, USA. Read More

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http://dx.doi.org/10.1007/s00572-018-0859-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182365PMC
October 2018

Adaptation and tolerance mechanisms developed by mycorrhizal Bipinnula fimbriata plantlets (Orchidaceae) in a heavy metal-polluted ecosystem.

Mycorrhiza 2018 Oct 9;28(7):651-663. Epub 2018 Aug 9.

Laboratorio de Biorremediación, Facultad de Ciencias Agropecuarias y Forestales, Departamento de Ciencias Forestales, Universidad de La Frontera, Temuco, Chile.

The adaptation and performance of orchid mycorrhizae in heavy metal-polluted soils have been poorly explored. In the present study, proteomic and metabolic approaches were used to detect physiological changes in orchid roots established in a heavy metal-polluted soil and to ascertain whether mycorrhizal fungi affect the metabolic responses of roots. Young Bipinnula fimbriata plantlets were established in control and heavy metal-polluted soils in a greenhouse. Read More

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http://dx.doi.org/10.1007/s00572-018-0858-4DOI Listing
October 2018
1 Read

Arbuscular mycorrhizal fungal communities under gradients of grazing in Mongolian grasslands of different aridity.

Mycorrhiza 2018 Oct 24;28(7):621-634. Epub 2018 Jul 24.

Faculty of Education, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan.

Communities of arbuscular mycorrhizal (AM) fungi in Mongolian grassland were characterized under gradients of grazing intensity at three study sites of different aridity: mountain forest steppe at Hustai National Park (Hustai), and desert steppe at Mandalgovi and Bulgan. Grazing intensity was classified into three categories: lightly grazed (LG), moderately grazed (MG), and heavily grazed (HG). With regard to floristic composition, grazing decreased the shoot biomass of Poaceae species, especially Stipa spp. Read More

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http://dx.doi.org/10.1007/s00572-018-0855-7DOI Listing
October 2018
1 Read

Salicylic acid improves arbuscular mycorrhizal symbiosis, and chickpea growth and yield by modulating carbohydrate metabolism under salt stress.

Mycorrhiza 2018 Nov 24;28(8):727-746. Epub 2018 Jul 24.

Department of Botany, Panjab University, Chandigarh, 160014, India.

Salt stress is a major abiotic stress restricting plant growth and reproductive yield. Salicylic acid (SA) and arbuscular mycorrhizal (AM) symbioses play key roles in eliminating adverse effects of salt stress by modulating ion homeostasis and carbohydrate metabolism in crop plants. Sugars synthesized via carbohydrate metabolism act as osmotic adjustors and signaling molecules in activation of various defense responses against salt stress. Read More

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http://dx.doi.org/10.1007/s00572-018-0856-6DOI Listing
November 2018

The continuing relevance of "older" mycorrhiza literature: insights from the work of John Laker Harley (1911-1990).

Mycorrhiza 2018 Oct 16;28(7):577-586. Epub 2018 Jul 16.

Department of Plant Biology, University Minnesota, St Paul, MN, 55108, USA.

To new generations of scientists beginning their careers in research, we strongly recommend the practice of reading older literature. To illustrate the value of doing so, we highlight six insights of one of the most influential mycorrhiza researchers of the twentieth century, Jack Harley. These insights concerning mycotrophy, the new niche, the sheath, C cycling, N cycling, and mutualism were published prior to 1975 and so may have escaped the notice of many, but they laid the groundwork for some of the most important research of today. Read More

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http://dx.doi.org/10.1007/s00572-018-0854-8DOI Listing
October 2018

Effects of two contrasted arbuscular mycorrhizal fungal isolates on nutrient uptake by Sorghum bicolor under drought.

Mycorrhiza 2018 Jul 13. Epub 2018 Jul 13.

Zurich Basel Plant Science Center, Department of Environmental Sciences, University of Basel, Hebelstrasse 1, 4056, Basel, Switzerland.

Drought is a limiting factor for crop production, especially in arid and semi-arid climates. In this study, Sorghum bicolor plants were inoculated, or not, with Rhizophagus irregularis, an arbuscular mycorrhizal (AM) strain typical for temperate climates, or Rhizophagus arabicus, a strain endemic to hyper-arid ecosystems. Plants were grown under well-watered or drought conditions in compartmented microcosms. Read More

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http://dx.doi.org/10.1007/s00572-018-0853-9DOI Listing
July 2018
1 Read

Arbuscular mycorrhizal inoculum sources influence bacterial, archaeal, and fungal communities' structures of historically dioxin/furan-contaminated soil but not the pollutant dissipation rate.

Mycorrhiza 2018 Jul 9. Epub 2018 Jul 9.

Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais, France.

Little is known about the influence of arbuscular mycorrhizal fungi (AMF) inoculum sources on phytoremediation efficiency. Therefore, the aim of this study was to compare the effects of two mycorrhizal inocula (indigenous and commercial inocula) in association with alfalfa and tall fescue on the plant growth, the bacterial, fungal, and archaeal communities, and on the removal of dioxin/furan (PCDD/F) from a historically polluted soil after 24 weeks of culture in microcosms. Our results showed that both mycorrhizal indigenous and commercial inocula were able to colonize plant roots, and the growth response depends on the AMF inoculum. Read More

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http://dx.doi.org/10.1007/s00572-018-0852-xDOI Listing
July 2018
10 Reads

Large elevation and small host plant differences in the arbuscular mycorrhizal communities of montane and alpine grasslands on the Tibetan Plateau.

Mycorrhiza 2018 Oct 30;28(7):605-619. Epub 2018 Jun 30.

College of Resources and Environmental Sciences, Centre for Resources, Environment and Food Security, China Agricultural University, Beijing, 100193, China.

Understanding the diversity and community structure of arbuscular mycorrhizal fungi (AMF) in extreme conditions is fundamental to predict the occurrence and evolution of either symbiotic partner in alpine ecosystems. We investigated the AMF associations of three plant species at elevations ranging between 3105 and 4556 m a.s. Read More

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http://dx.doi.org/10.1007/s00572-018-0850-zDOI Listing
October 2018
19 Reads

Utilization of organic nitrogen by arbuscular mycorrhizal fungi-is there a specific role for protists and ammonia oxidizers?

Mycorrhiza 2018 Aug;28(5-6):465

Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic.

Arbuscular mycorrhizal (AM) fungi can significantly contribute to plant nitrogen (N) uptake from complex organic sources, most likely in concert with activity of soil saprotrophs and other microbes releasing and transforming the N bound in organic forms. Here, we tested whether AM fungus (Rhizophagus irregularis) extraradical hyphal networks showed any preferences towards certain forms of organic N (chitin of fungal or crustacean origin, DNA, clover biomass, or albumin) administered in spatially discrete patches, and how the presence of AM fungal hyphae affected other microbes. By direct N labeling, we also quantified the flux of N to the plants (Andropogon gerardii) through the AM fungal hyphae from fungal chitin and from clover biomass. Read More

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http://link.springer.com/10.1007/s00572-018-0851-y
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http://dx.doi.org/10.1007/s00572-018-0851-yDOI Listing
August 2018
11 Reads

O-labeled phosphate applied to soil appears in the shoots of maize after uptake by roots but not after uptake by an arbuscular mycorrhizal fungus.

Mycorrhiza 2018 Nov 27;28(8):787-793. Epub 2018 Jun 27.

SoilsWest, UWA School of Agriculture and Environment, and The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, 6009, Australia.

The application of P or P isotopes to directly trace phosphorus (P) uptake during arbuscular mycorrhizal (AM) symbiosis is limited by the radioactivity of the two P isotopes, especially under field conditions. A potential alternative method for tracing P uptake in plant-soil systems relies on the analysis of the stable oxygen (O) isotopes of ortho-phosphate (Pi); however, little is known about the fate of the P-O bond during Pi uptake in AM symbioses. This study investigated whether the abundance of O in Pi extracted from the shoots of maize increased after O-labeled Pi added to soil was taken up by either roots of maize or AM extraradical hyphae. Read More

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http://dx.doi.org/10.1007/s00572-018-0849-5DOI Listing
November 2018
3 Reads

Ectomycorrhizal fungal communities in high mountain conifer forests in central Mexico and their potential use in the assisted migration of Abies religiosa.

Mycorrhiza 2018 Aug 11;28(5-6):509-521. Epub 2018 Jun 11.

Laboratorio de Sistemática, Ecología y Aprovechamiento de Hongos Ectomicorrízicos, Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria. Del. Coyoacán, C.P. 04510, Mexico City, CDMX, Mexico.

Abies religiosa forests in central Mexico are the only overwinter refuge of the monarch butterfly and provide important ecosystem services. These forests have lost 55% of their original area and as a consequence, diversity and biotic interactions in these ecosystems are in risk. The aim of this study was to compare the soil fungal diversity and community structure in the Abies religiosa forests and surrounding Pinus montezumae, Pinus hartwegii, and coniferous mixed forest plant communities to provide data on ecology of mycorrhizal interactions for the assisted migration of A. Read More

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http://dx.doi.org/10.1007/s00572-018-0841-0DOI Listing
August 2018
1 Read

Tomato CYCLOPS/IPD3 is required for mycorrhizal symbiosis but not tolerance to Fusarium wilt in mycorrhiza-deficient tomato mutant rmc.

Mycorrhiza 2018 Aug 9;28(5-6):495-507. Epub 2018 Jun 9.

School of Agriculture and Environment, Faculty of Science, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.

Mycorrhizal symbiosis requires several common symbiosis genes including CYCLOPS/IPD3. The reduced mycorrhizal colonisation (rmc) tomato mutant has a deletion of five genes including CYCLOPS/IPD3, and rmc is more susceptible to Fusarium wilt than its wild-type parental line. This study investigated the genetic defects leading to both fungal interaction phenotypes and whether these were separable. Read More

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http://dx.doi.org/10.1007/s00572-018-0842-zDOI Listing
August 2018
1 Read

Quorum sensing in rhizobia isolated from the spores of the mycorrhizal symbiont Rhizophagus intraradices.

Mycorrhiza 2018 Jun 24. Epub 2018 Jun 24.

Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy.

Most beneficial services provided by arbuscular mycorrhizal fungi (AMF), encompassing improved crop performance and soil resource availability, are mediated by AMF-associated bacteria, showing key-plant growth-promoting (PGP) traits, i.e., the production of indole acetic acid, siderophores and antibiotics, and activities increasing the availability of plant nutrients by nitrogen fixation and phosphate mobilization. Read More

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http://dx.doi.org/10.1007/s00572-018-0847-7DOI Listing
June 2018
24 Reads

Responses of nonenzymatic antioxidants to atrazine in arbuscular mycorrhizal roots of Medicago sativa L.

Mycorrhiza 2018 Jun 22. Epub 2018 Jun 22.

Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, College of Life Sciences, Heilongjiang University, Harbin, 150080, China.

Atrazine induces the production of reactive oxygen species (ROS), which are detoxified by enzymatic and nonenzymatic mechanisms in plants. Arbuscular mycorrhizal fungi improve on this first level of plant resistance to environmental stresses through the antioxidant defense system, but the way in which nonenzymatic antioxidants relate to atrazine in arbuscular mycorrhizal roots is not well-known. In this study, a symbiotic relationship between Funneliformis mosseae and Medicago sativa L. Read More

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http://dx.doi.org/10.1007/s00572-018-0848-6DOI Listing

Mycorrhizal associations of the exotic hickory trees, Carya laciniosa and Carya cordiformis, grown in Kórnik Arboretum in Poland.

Mycorrhiza 2018 Jun 22. Epub 2018 Jun 22.

Laboratory of Symbiotic Associations, Institute of Dendrology Polish Academy of Sciences, Parkowa 5, 62-035, Kórnik, Poland.

We studied mycorrhizal associations of North American Carya laciniosa and Carya cordiformis trees, successfully acclimated to local habitat conditions of the historic Kórnik Arboretum in Poland, in order to better understand mycorrhizal host range extensions in new environments. The root systems of Carya seedlings (1-3 years old), regenerated under a canopy of mature hickory trees, were analyzed using microscopic, morphological, and molecular techniques. Our results, for the first time, indicate that C. Read More

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http://dx.doi.org/10.1007/s00572-018-0846-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182374PMC

Seasonal variation in winter wheat field soil arbuscular mycorrhizal fungus communities after non-mycorrhizal crop cultivation.

Mycorrhiza 2018 Jun 21. Epub 2018 Jun 21.

Institute for Sustainable Plant Protection -Turin unit, National Research Council, Viale Mattioli 25, 10125, Torino, Italy.

Intensive farming practices that implement deep and frequent tillage, high input inorganic fertilization, cultivation with non-host species, and pesticide use are widely reported to be detrimental for arbuscular mycorrhizal fungi (AMF), which are one of the most important plant biofertilizers. The effect of the reduction of agricultural input on AMF community dynamics following conversion from conventional non-mycorrhizal to lower input mycorrhizal crop cultivation has not yet been fully elucidated. We investigated the effect of the reduction of agricultural input, rotation, and season on AMF communities in winter wheat field soil after conversion from long-term (more than 20 years) non-mycorrhizal (sugar beet) crop cultivation. Read More

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http://dx.doi.org/10.1007/s00572-018-0845-9DOI Listing

Appropriate nonmycorrhizal controls in arbuscular mycorrhiza research: a microbiome perspective.

Mycorrhiza 2018 Jun 21. Epub 2018 Jun 21.

Institute of Microbiology, v.v.i., Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague 4, Czech Republic.

Establishment of nonmycorrhizal controls is a "classic and recurrent theme" in mycorrhizal research. For decades, authors reported mycorrhizal plant growth/nutrition as compared to various nonmycorrhizal controls. In such studies, uncertainties remain about which nonmycorrhizal controls are most appropriate and, in particular, what effects the control inoculations have on substrate and root microbiomes. Read More

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http://dx.doi.org/10.1007/s00572-018-0844-xDOI Listing
June 2018
2 Reads

Expression of putative circadian clock components in the arbuscular mycorrhizal fungus Rhizoglomus irregulare.

Mycorrhiza 2018 Jun 21. Epub 2018 Jun 21.

Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Rue Sherbrooke Est, Montréal, Québec, H1X 2B2, Canada.

Arbuscular mycorrhizal fungi (AMF) are obligatory plant symbionts that live underground, so few studies have examined their response to light. Responses to blue light by other fungi can be mediated by White Collar-1 (WC-1) and WC-2 proteins. These wc genes, together with the frequency gene (frq), also form part of the endogenous circadian clock. Read More

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http://dx.doi.org/10.1007/s00572-018-0843-yDOI Listing
June 2018
1 Read

Professor José Miguel Barea (1942-2018): a tribute to an inspiring scientist.

Authors:
Peter Jeffries

Mycorrhiza 2018 Jun 7. Epub 2018 Jun 7.

School of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, UK.

The mycorrhiza and, more generally, soil microbiology research communities recently have lost one of their most ardent scientists. José Miguel Barea was a world leader of arbuscular mycorrhiza research and pioneered the establishment of such studies in Spain and Latin American. He was a prolific publisher, enthusiastic teacher of many graduate students and a genial host to visitors of his beloved Granada. Read More

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http://dx.doi.org/10.1007/s00572-018-0837-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182362PMC

Wetland plant species improve performance when inoculated with arbuscular mycorrhizal fungi: a meta-analysis of experimental pot studies.

Mycorrhiza 2018 Aug 4;28(5-6):477-493. Epub 2018 Jun 4.

Departamento de Ecología Tropical, Universidad Autónoma de Yucatán, Carretera Mérida-Xmatkuil Km 15.5, 97100, Mérida, Yucatán, Mexico.

The presence of arbuscular mycorrhizal fungi (AMF) in wetlands is widespread. Wetlands are transition ecosystems between aquatic and terrestrial systems, where shallow water stands or moves over the land surface. The presence of AMF in wetlands suggests that they are ecologically significant; however, their function is not yet clearly understood. Read More

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http://dx.doi.org/10.1007/s00572-018-0839-7DOI Listing

Crested porcupines (Hystrix cristata): mycophagist spore dispersers of the ectomycorrhizal truffle Tuber aestivum.

Mycorrhiza 2018 Aug 4;28(5-6):561-565. Epub 2018 Jun 4.

Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy.

Truffles, as hypogeous, ectomycorrhizal fungi, have no means to actively discharge spores into the environment and thus depend on mycophagists for spore dispersal. After consumption of fruiting bodies by animals and passage through the digestive tract, the spores are released in faecal pellets. Recently, in the Abruzzo region (Italy), Hystrix cristata has been spotted inside private truffières, but its role in spore dispersal has never been investigated. Read More

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http://link.springer.com/10.1007/s00572-018-0840-1
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http://dx.doi.org/10.1007/s00572-018-0840-1DOI Listing
August 2018
3 Reads

Metabolome changes are induced in the arbuscular mycorrhizal fungus Gigaspora margarita by germination and by its bacterial endosymbiont.

Mycorrhiza 2018 Aug 2;28(5-6):421-433. Epub 2018 Jun 2.

Department of Chemistry, University of Tennessee, 1420 Circle Drive, Knoxville, TN, 37996, USA.

Metabolomic profiling is becoming an increasingly important technique in the larger field of systems biology by allowing the simultaneous measurement of thousands of small molecules participating in and resulting from cellular reactions. In this way, metabolomics presents an opportunity to observe the physiological state of a system, which may provide the ability to monitor the whole of cellular metabolism as the technology progresses. The arbuscular mycorrhizal fungus Gigaspora margarita has not previously been explored with regard to metabolite composition. Read More

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http://dx.doi.org/10.1007/s00572-018-0838-8DOI Listing
August 2018
11 Reads

Current and potential distribution of the ectomycorrhizal fungus Suillus lakei ((Murrill) A.H. Sm. & Thiers) in its invasion range.

Mycorrhiza 2018 May 15. Epub 2018 May 15.

Department of Plant Taxonomy and Nature Conservation, University of Gdańsk, Wita Stwosza 59, 80-308, Gdańsk, Poland.

Suillus lakei is an ectomycorrhizal fungus native to North America and known in Europe, South America, and New Zealand. This contribution aims to illustrate the worldwide biogeography of S. lakei based on sporocarp records. Read More

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http://dx.doi.org/10.1007/s00572-018-0836-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182358PMC

Gamarada debralockiae gen. nov. sp. nov.-the genome of the most widespread Australian ericoid mycorrhizal fungus.

Mycorrhiza 2018 May 27;28(4):379-389. Epub 2018 Apr 27.

CSIRO, North Ryde, Sydney, NSW, 2113, Australia.

This study describes a novel ericoid mycorrhizal fungus (ErMF), Gamarada debralockiae Midgley and Tran-Dinh gen. nov. sp. Read More

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http://dx.doi.org/10.1007/s00572-018-0835-yDOI Listing
May 2018
1 Read

Variation in allele frequencies at the bg112 locus reveals unequal inheritance of nuclei in a dikaryotic isolate of the fungus Rhizophagus irregularis.

Mycorrhiza 2018 May 19;28(4):369-377. Epub 2018 Apr 19.

Department of Ecology and Evolution, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland.

The genetic state of the arbuscular mycorrhizal fungus species Rhizophagus irregularis differs among isolates, including both homokaryotic and dikaryotic isolates. Via the production of multi-nucleate axexual spores, siblings of dikaryotic isolates may inherit unequal frequencies of nucleotypes. Using bg112, a microsatellite marker, previous studies revealed that lines deriving from single spores of the dikaryotic R. Read More

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http://dx.doi.org/10.1007/s00572-018-0834-zDOI Listing
May 2018
2 Reads

Ectomycorrhizal fungal diversity and community structure associated with cork oak in different landscapes.

Mycorrhiza 2018 May 13;28(4):357-368. Epub 2018 Apr 13.

BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.

Cork oak (Quercus suber L.) forests play an important ecological and economic role. Ectomycorrhizal fungi (ECMF) are key components for the sustainability and functioning of these ecosystems. Read More

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http://dx.doi.org/10.1007/s00572-018-0832-1DOI Listing
May 2018
21 Reads

N-Acetylglucosaminidase activity, a functional trait of chitin degradation, is regulated differentially within two orders of ectomycorrhizal fungi: Boletales and Agaricales.

Mycorrhiza 2018 May 13;28(4):391-397. Epub 2018 Apr 13.

Université de Lorraine, Inra, IAM, F-54000, Nancy, France.

Chitin is one of the most abundant nitrogen-containing polymers in forest soil. Ability of ectomycorrhizal (EM) fungi to utilize chitin may play a key role in the EM symbiosis nutrition and soil carbon cycle. In forest, EM fungi exhibit high diversity, which could be based on function partitioning and trait complementarity. Read More

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http://dx.doi.org/10.1007/s00572-018-0833-0DOI Listing
May 2018
5 Reads

Dr. Edward Hacskaylo: a memoir and tribute.

Authors:
C P Patrick Reid

Mycorrhiza 2018 May 10;28(4):399-402. Epub 2018 Apr 10.

Professor Emeritus, University of Arizona, 5326 Highcastle Ct, Fort Collins, CO, 80525-6716, USA.

Edward Hacskaylo was a pioneer in many aspects of mycorrhiza research and significantly influenced our understanding of the physiology and ecology of mycorrhizas. This memoir highlights Dr. Hacskaylo's many contributions and his impact on mycorrhiza research, especially through his encouragement and mentoring of young scientists. Read More

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http://dx.doi.org/10.1007/s00572-018-0831-2DOI Listing
May 2018
4 Reads