301 results match your criteria fungus gigaspora

Soil legacy of arbuscular mycorrhizal fungus Gigaspora margarita: The potassium-sequestering glomalin improves peanut (Arachis hypogaea) drought resistance and pod yield.

Microbiol Res 2021 Aug 29;249:126774. Epub 2021 Apr 29.

Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, China. Electronic address:

In agroecosystems, drought stress severely threatens crops development. Although potassium (K) is required in amounts by crops under drought stress, the mobilization and availablity of K are limited by the soil water status. Arbuscular mycorrhizal (AM) fungi can form mutualistic associations with most crops and play direct or indirect roles in the host drought resistance. Read More

View Article and Full-Text PDF

Fungicides With Contrasting Mode of Action Differentially Affect Hyphal Healing Mechanism in sp. and .

Front Plant Sci 2021 10;12:642094. Epub 2021 Mar 10.

Laboratory of Mycology, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium.

Fungicides are widely used in conventional agriculture to control fungal diseases, but may also affect non-target microorganisms such as arbuscular mycorrhizal (AM) fungi. These root symbionts develop extended mycelial networks within the soil via mechanisms such as anastomosis that indistinctly concerns intact and damaged hyphae, the latter being named hyphal healing mechanism (HHM). The HHM differs between and . Read More

View Article and Full-Text PDF

Diesel fuel differentially affects hyphal healing in Gigaspora sp. and Rhizophagus irregularis.

Mycorrhiza 2021 May 4;31(3):413-421. Epub 2021 Mar 4.

Laboratory of Mycology, Earth and Life Institute, Université catholique de Louvain, Croix du Sud 3, 1348 Louvain-la-Neuve, Belgium.

Hydrocarbon pollution is an increasing problem affecting soil ecosystems. However, some microorganisms can cope with these pollutants and even facilitate plant establishment and thus phytoremediation. Within soil, arbuscular mycorrhizal fungi (AMF) have developed several strategies to survive and flourish under adverse conditions. Read More

View Article and Full-Text PDF

Colonization by arbuscular mycorrhizal fungi improves salinity tolerance of eucalyptus (Eucalyptus camaldulensis) seedlings.

Sci Rep 2021 Feb 23;11(1):4362. Epub 2021 Feb 23.

Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.

Soil salinity affects soil quality and reduces plant performance. Arbuscular mycorrhizal fungi (AMF) can enhance the tolerance of plants under salinity stress. Cultivation of eucalyptus (Eucalyptus camaldulensis), which exhibits high water use efficiency, is possible in saline areas to produce raw materials for the pulp industry. Read More

View Article and Full-Text PDF
February 2021

The Mosaic Architecture of NRPS-PKS in the Arbuscular Mycorrhizal Fungus Shows a Domain With Bacterial Signature.

Front Microbiol 2020 26;11:581313. Epub 2020 Nov 26.

Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.

As obligate biotrophic symbionts, arbuscular mycorrhizal fungi (AMF) live in association with most land plants. Among them, has been deeply investigated because of its peculiar features, i.e. Read More

View Article and Full-Text PDF
November 2020

Different Arbuscular Mycorrhizal Fungi Cocolonizing on a Single Plant Root System Recruit Distinct Microbiomes.

mSystems 2020 Dec 15;5(6). Epub 2020 Dec 15.

College of Resources and Environmental Sciences, China Agricultural University, Beijing, China

Plant roots are usually colonized by various arbuscular mycorrhizal (AM) fungal species, which vary in morphological, physiological, and genetic traits. This colonization constitutes the mycorrhizal nutrient uptake pathway (MP) and supplements the pathway through roots. Simultaneously, the extraradical hyphae of each AM fungus is associated with a community of bacteria. Read More

View Article and Full-Text PDF
December 2020

Yield Performance and Leaf Nutrient Composition of Bambara Groundnut Under Arbuscular Mycorrhizal Inoculation in a Poultry Manure Amended Ultisol.

Pak J Biol Sci 2020 Jan;23(11):1397-1407

Background And Objective: Researchers are now targeting the possibility of sustainably producing crops without polluting the soil and groundwater through the integrated use of Poultry Manure (PM) and Arbuscular Mycorrhizal Fungi (AMF). The present study was undertaken to investigate the yield response and leaf nutrient composition of Bambara groundnut under arbuscular mycorrhizal inoculation in poultry manure amended ultisol during the 2016 and 2017 cropping seasons.

Materials And Methods: The study was a 4×5 factorial experiment consisting of four levels of poultry manure and four inoculums of arbuscular mycorrhizal fungi plus the un-inoculated control and was laid out in a Randomized Complete Block design (RCBD) with three replications to give 20 treatment combinations. Read More

View Article and Full-Text PDF
January 2020

Ecotoxicological test to assess effects of herbicides on spore germination of Rhizophagus clarus and Gigaspora albida.

Ecotoxicol Environ Saf 2021 Jan 9;207:111599. Epub 2020 Nov 9.

Department of Soil Science, Universidade do Estado de Santa Catarina (UDESC Lages), Lages, SC, Brazil. Electronic address:

Given the essential role of arbuscular mycorrhizal fungi (AMF) in soil systems and agriculture, their use as biological indicators has risen in all fields of microbiology research. However, AMF sensitivity to chemical pesticides is poorly understood in field conditions, and not explored in ecotoxicology protocols. Hence, the goal of this study was to evaluate the effects of different concentrations of glyphosate (Roundup®) and diuron+paraquat (Gramocil®) on the germination of spores of Gigaspora albida and Rhizophagus clarus in a tropical artificial soil. Read More

View Article and Full-Text PDF
January 2021

Myristate can be used as a carbon and energy source for the asymbiotic growth of arbuscular mycorrhizal fungi.

Proc Natl Acad Sci U S A 2020 10 30;117(41):25779-25788. Epub 2020 Sep 30.

Faculty of Agriculture, Shinshu University, Minamiminowa, 399-4598 Nagano, Japan

Arbuscular mycorrhizal (AM) fungi, forming symbiotic associations with land plants, are obligate symbionts that cannot complete their natural life cycle without a host. The fatty acid auxotrophy of AM fungi is supported by recent studies showing that lipids synthesized by the host plants are transferred to the fungi, and that the latter lack genes encoding cytosolic fatty acid synthases. Therefore, to establish an asymbiotic cultivation system for AM fungi, we tried to identify the fatty acids that could promote biomass production. Read More

View Article and Full-Text PDF
October 2020

and Its Endobacterium Modulate Symbiotic Marker Genes in Tomato Roots under Combined Water and Nutrient Stress.

Plants (Basel) 2020 Jul 14;9(7). Epub 2020 Jul 14.

Department of Life Sciences and Systems Biology, University of Torino, Viale P.A. Mattioli 25, I-10125 Torino, Italy.

As members of the plant microbiota, arbuscular mycorrhizal fungi (AMF) may be effective in enhancing plant resilience to drought, one of the major limiting factors threatening crop productivity. AMF host their own microbiota and previous data demonstrated that endobacteria thriving in modulate fungal antioxidant responses. Here, we used the - Glomeribacter gigasporarum system to test whether the tripartite interaction between tomato, and its endobacteria may improve plant resilience to combined water/nutrient stress. Read More

View Article and Full-Text PDF

Response of the arbuscular mycorrhizal fungi diversity and community in maize and soybean rhizosphere soil and roots to intercropping systems with different nitrogen application rates.

Sci Total Environ 2020 Oct 1;740:139810. Epub 2020 Jun 1.

Resource and Environmental College, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.

Maize (Zea mays L.)/soybean (Glycine max L.) intercropping has been widely practiced in China, because of its effectiveness in improving crop yield and nitrogen utilization efficiency. Read More

View Article and Full-Text PDF
October 2020

Initiation of arbuscular mycorrhizal symbiosis involves a novel pathway independent from hyphal branching.

Mycorrhiza 2020 Jul 6;30(4):491-501. Epub 2020 Jun 6.

Laboratoire de Recherche en Sciences Végétales, CNRS, Université de Toulouse, UPS, 24 chemin de Borde Rouge, Auzeville, 31320, Castanet-Tolosan, France.

The arbuscular mycorrhizal symbiosis is a very common association between plant roots and soil fungi, which greatly contributes to plant nutrition. Root-exuded compounds known as strigolactones act as symbiotic signals stimulating the fungus prior to root colonization. Strigolactones also play an endogenous role in planta as phytohormones and contribute to the regulation of various developmental traits. Read More

View Article and Full-Text PDF

Effects of single and multiple species inocula of arbuscular mycorrhizal fungi on the salinity tolerance of a Bangladeshi rice (Oryza sativa L.) cultivar.

Mycorrhiza 2020 Jul 4;30(4):431-444. Epub 2020 May 4.

Department of Biology, Plant Conservation and Population Biology, KU Leuven, Kasteelpark Arenberg 31, 2435, 3001, Heverlee, Belgium.

Soil salinization due to sea level rise and groundwater irrigation has become an important agronomic problem in many parts of the world. Symbiosis between crop species and arbuscular mycorrhizal fungi (AMF) may alleviate salt stress-induced detrimental effects on crop growth and yield, for example, through helping the host plant to selectively absorb potassium while avoiding uptake of excessive sodium. Here, we performed a greenhouse experiment to evaluate growth, grain yield, and salt tolerance of a Bangladeshi rice cultivar under three levels of salt stress (0, 75, and 120 mM) after inoculation with three different AMF species from three different genera (Funnelliformis mosseae (BEG12), Acaulospora laevis (BEG13), and Gigaspora margarita (BEG34)), singly and in combination. Read More

View Article and Full-Text PDF

Siderophores in plant root tissue: Tagetes patula nana colonized by the arbuscular mycorrhizal fungus Gigaspora margarita.

Biometals 2020 06 3;33(2-3):137-146. Epub 2020 May 3.

Department of Microbiology & Biotechnology, University of Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany.

More than 70% of vascular plant species live in symbiosis with arbuscular mycorrhizal (AM) fungi. In addition to other effects this symbiosis is known for its significance for plant nutrition including iron. Fungal iron mobilization from soil is commonly dependent on siderophores. Read More

View Article and Full-Text PDF

Evaluation of secondary ions related to plant tissue using least absolute shrinkage and selection operator.

Biointerphases 2020 04 9;15(2):021010. Epub 2020 Apr 9.

Faculty of Science and Technology, Seikei University, 3-3-1 Kichijoji-Kitamachi, Musashino-shi, Tokyo 180-8633, Japan.

With regard to life sciences, it is important to understand biological functions such as metabolic reactions at the cellular level. Time-of-flight secondary ion mass spectrometry (TOF-SIMS) that can provide chemical mappings at 100 nm lateral resolutions is useful for obtaining three-dimensional maps of biological molecules in cells and tissues. TOF-SIMS spectra generally contain several hundred to several thousand secondary ion peaks that provide detailed chemical information. Read More

View Article and Full-Text PDF

Different Genetic Sources Contribute to the Small RNA Population in the Arbuscular Mycorrhizal Fungus .

Front Microbiol 2020 13;11:395. Epub 2020 Mar 13.

Department of Life Sciences and Systems Biology, School of Nature Sciences, University of Turin, Turin, Italy.

RNA interference (RNAi) is a key regulatory pathway of gene expression in almost all eukaryotes. This mechanism relies on short non-coding RNA molecules (sRNAs) to recognize in a sequence-specific manner DNA or RNA targets leading to transcriptional or post-transcriptional gene silencing. To date, the fundamental role of sRNAs in the regulation of development, stress responses, defense against viruses and mobile elements, and cross-kingdom interactions has been extensively studied in a number of biological systems. Read More

View Article and Full-Text PDF

Diversity of arbuscular mycorrhizal fungi associated with acacia trees in southwestern Saudi Arabia.

J Basic Microbiol 2020 Apr 16;60(4):322-330. Epub 2019 Dec 16.

Centre for Environmental Research and Studies, Jazan University, Jazan, Saudi Arabia.

Acacia species produce extensive, deep root systems with a capacity to develop mycorrhizal symbioses that facilitate plant nutrition via enhanced soil nutrient absorption. This study aimed to evaluate the mycorrhizal status and the diversity of arbuscular mycorrhizal fungi (AMF) associated with acacia trees in southwestern Saudi Arabia. The mycorrhizal status varied greatly between species. Read More

View Article and Full-Text PDF

Succession in arbuscular mycorrhizal fungi can be attributed to a chronosequence of Cunninghamia lanceolata.

Sci Rep 2019 12 2;9(1):18057. Epub 2019 Dec 2.

College of Forestry, Beijing Forestry University, Beijing, 100083, China.

Arbuscular mycorrhizal (AM) fungi play an important role in plant-fungi communities. It remains a central question of how the AM fungal community changes as plants grow. To establish an understanding of AM fungal community dynamics associated with Chinese fir, Chinese fir with five different growth stages were studied and 60 root samples were collected at the Jiangle National Forestry Farm, Fujian Province. Read More

View Article and Full-Text PDF
December 2019

Eco-restoration approach for mine spoil overburden dump through biotechnological route.

Environ Monit Assess 2019 Nov 26;191(12):772. Epub 2019 Nov 26.

Environmental Impact and Sustainability Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, India.

The overburden dumps which are created during the process of mining are devoid of supportive and nutritive capacity for biomass development. Restoration of these overburden dumps requires the establishment of a self-sustaining soil-plant system, for which a restoration strategy is needed to accelerate the natural processes of ecosystem development. For eco-restoration of a coal mine spoil dump, National Environmental Engineering Research Institute developed an ecofriendly multidisciplinary approach to restore the fertility of the mine spoil overburden dump. Read More

View Article and Full-Text PDF
November 2019

Is arbuscular mycorrhizal fungal species community affected by cotton growth management systems in the Brazilian Cerrado?

An Acad Bras Cienc 2019 11;91(4):e20180695. Epub 2019 Nov 11.

Universidade Federal do Recôncavo da Bahia, Centro de Ciências Agrárias, Ambientais e Biológicas, Programa de Pós-Graduação em Microbiologia Agrícola, 44380-000 Cruz das Almas, BA, Brazil.

Conventional cotton production in western Bahia, Brazil, involves intensive use of agricultural inputs and mechanization, which may affect arbuscular mycorrhizal fungi (AMF). This work aimed at studying the impact of conventional and organic cotton production in the AMF of western Bahia. Soil samples were obtained from conventional white cotton and colored cotton organic production systems as well as from native Cerrado areas, close to the white cotton fields, and from the subcaducifolia vegetation, close to the organic colored cotton farms. Read More

View Article and Full-Text PDF
December 2019

At the nexus of three kingdoms: the genome of the mycorrhizal fungus Gigaspora margarita provides insights into plant, endobacterial and fungal interactions.

Environ Microbiol 2020 01 31;22(1):122-141. Epub 2019 Oct 31.

Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.

As members of the plant microbiota, arbuscular mycorrhizal fungi (AMF, Glomeromycotina) symbiotically colonize plant roots. AMF also possess their own microbiota, hosting some uncultivable endobacteria. Ongoing research has revealed the genetics underlying plant responses to colonization by AMF, but the fungal side of the relationship remains in the dark. Read More

View Article and Full-Text PDF
January 2020

A low cost alternative, using mycorrhiza and organic fertilizer, to optimize the production of foliar bioactive compounds in pomegranates.

J Appl Microbiol 2020 Feb 25;128(2):513-517. Epub 2019 Oct 25.

Laboratório de Tecnologia Micorrízica, Universidade de Pernambuco, Petrolina, Brasil.

Aim: To select the best combination of arbuscular mycorrhizal fungi and efficient vermicompost dose in maximizing the production of leaf metabolites in Punica granatum seedlings.

Methods And Results: The experimental design was in a 3 × 3 factorial arrangement: three inoculation treatments (inoculated with Gigaspora albida, inoculated with Acaulospora longula and control not inoculated) × 3 doses of vermicompost (0, 5 and 7·5%). After 120 days of inoculation, biomolecules, plant growth parameters and mycorrhizal colonization were evaluated. Read More

View Article and Full-Text PDF
February 2020

Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis.

BMC Plant Biol 2019 May 4;19(1):180. Epub 2019 May 4.

Department of Life Sciences and Systems Biology, University of Turin, 10125, Torino, Italy.

Background: The intracellular accommodation of arbuscular mycorrhizal (AM) fungi involves a profound molecular reprogramming of the host cell architecture and metabolism, based on the activation of a symbiotic signaling pathway. In analogy with other plant biotrophs, AM fungi are reported to trigger cell cycle reactivation in their host tissues, possibly in support of the enhanced metabolic demand required for the symbiosis.

Results: We here compare the efficiency of three Fiji/ImageJ image analysis plugins in localizing and quantifying the increase in nuclear size - a hallmark of recursive events of endoreduplication - in M. Read More

View Article and Full-Text PDF

Maize varieties can strengthen positive plant-soil feedback through beneficial arbuscular mycorrhizal fungal mutualists.

Mycorrhiza 2019 May 27;29(3):251-261. Epub 2019 Mar 27.

Soil Biology Group, Wageningen University & Research, P.O. Box 47, 6700 AA, Wageningen, The Netherlands.

Plant-soil feedback (PSF) describes the process whereby plant species modify the soil environment, which subsequently impacts the growth of the same or another plant species. Our aim was to explore PSF by two maize varieties (a landrace and a hybrid variety) and three arbuscular mycorrhizal fungi (AMF) species (Funneliformis mosseae, Claroideoglomus etunicatum, Gigaspora margarita, and the mixture). We carried out a pot experiment with a conditioning and a feedback phase to determine PSF with different species of AMF and with a non-mycorrhizal control. Read More

View Article and Full-Text PDF

Local endoreduplication as a feature of intracellular fungal accommodation in arbuscular mycorrhizas.

New Phytol 2019 07 1;223(1):430-446. Epub 2019 Apr 1.

Department of Life Sciences and Systems Biology, University of Turin, 10125, Torino, Italy.

The intracellular accommodation of arbuscular mycorrhizal (AM) fungi is a paradigmatic feature of this plant symbiosis that depends on the activation of a dedicated signaling pathway and the extensive reprogramming of host cells, including striking changes in nuclear size and transcriptional activity. By combining targeted sampling of early root colonization sites, detailed confocal imaging, flow cytometry and gene expression analyses, we demonstrate that local, recursive events of endoreduplication are triggered in the Medicago truncatula root cortex during AM colonization. AM colonization induces an increase in ploidy levels and the activation of endocycle specific markers. Read More

View Article and Full-Text PDF

Landrace maize varieties differ from conventional and genetically modified hybrid maize in response to inoculation with arbuscular mycorrhizal fungi.

Mycorrhiza 2019 May 20;29(3):237-249. Epub 2019 Feb 20.

Rural Engineering Department, Federal University of Santa Catarina, Florianopolis, Brazil.

Land area planted with genetically modified (GM) crops has grown rapidly, and Brazil has the second largest area with those plants. There is, however, limited information on the possible effects of that technology on non-target organisms, especially root symbionts, such as arbuscular mycorrhizal fungi (AMF). We evaluated AMF symbiosis development in five maize genotypes: one landrace, two conventional hybrids (DKB 240 and Formula), and two GM hybrids (DKB 240-VT Pro and Formula TL). Read More

View Article and Full-Text PDF

Arbuscular cell invasion coincides with extracellular vesicles and membrane tubules.

Nat Plants 2019 02 8;5(2):204-211. Epub 2019 Feb 8.

Department of Plant Sciences, University of Cambridge, Cambridge, UK.

During establishment of arbuscular mycorrhizal symbioses, fungal hyphae invade root cells producing transient tree-like structures, the arbuscules, where exchange of photosynthates for soil minerals occurs. Arbuscule formation and collapse lead to rapid production and degradation of plant and fungal membranes, their spatiotemporal dynamics directly influencing nutrient exchange. We determined the ultra-structural details of both membrane surfaces and the interstitial apoplastic matrix by transmission electron microscopy tomography during growth and senescence of Rhizophagus irregularis arbuscules in rice. Read More

View Article and Full-Text PDF
February 2019

Production of biomolecules of interest to the anxiolytic herbal medicine industry in yellow passionfruit leaves (Passiflora edulis f. flavicarpa) promoted by mycorrhizal inoculation.

J Sci Food Agric 2019 May 20;99(7):3716-3720. Epub 2019 Feb 20.

Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada, Instituto de Ciências Biológicas, Universidade de Pernambuco, Recife, Brazil.

Background: Our contemporary way of life has led us to consume high amounts of chemically-synthesized allopathic medicinal products and anxiolytics to which a viable alternative is the use of Passiflora-based herbal medicines with composition containing vitexin, a flavonoid with anxiolytic and antidepressant properties. Arbuscular mycorrhizal fungi (AMF) are known for enhancing the production of biomolecules, however, increase production of phytochemistry in Passiflora edulis f. flavicarpa has not been reported in the literature. Read More

View Article and Full-Text PDF

Comparative genomics of Rhizophagus irregularis, R. cerebriforme, R. diaphanus and Gigaspora rosea highlights specific genetic features in Glomeromycotina.

New Phytol 2019 05 25;222(3):1584-1598. Epub 2019 Feb 25.

Institut National de la Recherche Agronomique, Université de Lorraine, Unité Mixte de Recherche Interactions Arbres/Microorganismes, Centre INRA-Grand Est-Nancy, 54280, Champenoux, France.

Glomeromycotina is a lineage of early diverging fungi that establish arbuscular mycorrhizal (AM) symbiosis with land plants. Despite their major ecological role, the genetic basis of their obligate mutualism remains largely unknown, hindering our understanding of their evolution and biology. We compared the genomes of Glomerales (Rhizophagus irregularis, Rhizophagus diaphanus, Rhizophagus cerebriforme) and Diversisporales (Gigaspora rosea) species, together with those of saprotrophic Mucoromycota, to identify gene families and processes associated with these lineages and to understand the molecular underpinning of their symbiotic lifestyle. Read More

View Article and Full-Text PDF

Arbuscular mycorrhizal fungi possess a CLAVATA3/embryo surrounding region-related gene that positively regulates symbiosis.

New Phytol 2019 04 12;222(2):1030-1042. Epub 2019 Jan 12.

Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24 chemin de Borde Rouge, Auzeville, BP42617, 31326, Castanet Tolosan, France.

The arbuscular mycorrhizal (AM) symbiosis is a beneficial association established between land plants and the members of a subphylum of fungi, the Glomeromycotina. How the two symbiotic partners regulate their association is still enigmatic. Secreted fungal peptides are candidates for regulating this interaction. Read More

View Article and Full-Text PDF