2,265 results match your criteria perennial grasses

Histological Methods to Detect Early-stage Plant Defense Responses during Artificial Inoculation of with .

Bio Protoc 2021 May 5;11(9):e4013. Epub 2021 May 5.

AgResearch, Grasslands Research Centre, Palmerston North, New Zealand.

species form agriculturally important symbioses with many cool season grasses. To study these symbioses, such as the interaction of with perennial ryegrass (, host plants can be infected by artificial inoculation of etiolated seedlings. This inoculation is performed by placing mycelium into an incision in the meristem, as previously described by Latch and Christensen (1985). Read More

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Efficiencies of selected biotreatments for the remediation of PAH in diluted bitumen contaminated soil microcosms.

Biodegradation 2021 Jun 4. Epub 2021 Jun 4.

Department of Chemistry, Faculty of Sciences, Sherbrooke University, Sherbrooke, Canada.

Unconventional oils such as diluted bitumen from oil sands differs from most of conventional oils in terms of physiochemical properties and PAHs composition. This raises concerns regarding the effectiveness of current remediation strategies and protocols originally developed for conventional oil. Here we evaluated the efficiency of different biotreatment approaches, such as fungi inoculation (bioaugmentation), sludge addition (bioaugmentation/biostimulation), perennial grasses plantation (phytoremediation) and their combinations as well as natural attenuation (as control condition), for the remediation of soil contaminated by synthetic crude oil (a product of diluted bitumen) in laboratory microcosms. Read More

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Fructan Structure and Metabolism in Overwintering Plants.

Midori Yoshida

Plants (Basel) 2021 May 7;10(5). Epub 2021 May 7.

NARO Hokkaido National Agricultural Research Center, Sapporo 062-8555, Japan.

In northern regions, annual and perennial overwintering plants such as wheat and temperate grasses accumulate fructan in vegetative tissues as an energy source. This is necessary for the survival of wintering tissues and degrading fructan for regeneration in spring. Other types of wintering plants, including chicory and asparagus, store fructan as a reserve carbohydrate in their roots during winter for shoot- and spear-sprouting in spring. Read More

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Functional diversity and coexistence of herbaceous plants in wet, species-rich savannas.

Ecol Evol 2021 May 22;11(10):5111-5120. Epub 2021 Mar 22.

Department of Biology University of Mississippi University MS USA.

Trait differences among plant species can favor species coexistence. The role that such differences play in the assembly of diverse plant communities maintained by frequent fires remains unresolved. This lack of resolution results in part from the possibility that species with similar traits may coexist because none has a significant fitness advantage and in part from the difficulty of experimental manipulation of highly diverse assemblages dominated by perennial species. Read More

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Assessment of Molecular Diversity in Biofuel Crops.

Methods Mol Biol 2021 ;2290:157-169

Phytopharma, Viridis BioPharma Pvt Ltd, Chembur, Mumbai, India.

Sustainable biofuel sources require the new sources of biofuel crops that can be developed into scalable plantation to meet the growing energy demands. Diverse supply sources of bioenergy plantations (edible, nonedible, and perennial grasses) will enable de-risking impact on geography and climate change that humans are likely to face in future. Use of phenotypic descriptors alone does not provide a deep insight into plantation population dynamics and molecular diversity of a biofuel crop. Read More

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January 2021

Ethanol-Soluble Carbohydrates of Cool-Season Grasses: Prediction of Concentration by Near-Infrared Reflectance Spectroscopy (NIRS) and Evaluation of Effects of Cultivar and Management.

J Equine Vet Sci 2021 Jun 19;101:103421. Epub 2021 Feb 19.

Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY.

Ethanol-soluble carbohydrates (ESCs) of cool-season grasses include mono- and disaccharides and sometimes short-chain fructans, which may exacerbate the risk of pasture-associated laminitis. A calibration for prediction of ESC concentrations by near-infrared reflectance spectroscopy (NIRS) was developed from 323 samples of four cool-season grass species (orchardgrass, Kentucky bluegrass, tall fescue, and perennial ryegrass) across 10 cultivars collected in central Kentucky in the morning and afternoon over two growing seasons. The calibration, which had accuracy above 95%, was used to predict ESC concentrations of 1,532 samples from the second growing season. Read More

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Plant phenological responses to experimental warming - A synthesis.

Glob Chang Biol 2021 May 16. Epub 2021 May 16.

Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA.

Although there is abundant evidence that plant phenology is shifting with climatic warming, the magnitude and direction of these shifts can depend on the environmental context, plant species, and even the specific phenophase of study. These disparities have resulted in difficulties predicting future phenological shifts, detecting phenological mismatches, and identifying other ecological consequences. Experimental warming studies are uniquely poised to help us understand how climate warming will impact plant phenology, and meta-analyses allow us to expose broader trends from individual studies. Read More

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is associated with roots of the perennial grass in Pacific Northwest prairies.

Mycologia 2021 May 6:1-10. Epub 2021 May 6.

Institute of Ecology and Evolution, University of Oregon, Eugene, 5289, Oregon 97403.

Prairies in the Pacific Northwest are dominated by perennial bunchgrasses. A in the complex was observed to tightly co-occur with bunchgrasses at several prairie study sites. Mapping and spatial statistics showed that it was strongly and significantly associated with tussocks. Read More

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The effects of organic grass and grass-birdsfoot trefoil pastures on Jersey heifer development: Herbage characteristics affecting intake.

J Dairy Sci 2021 Apr 29. Epub 2021 Apr 29.

Plants, Soils, and Climate Department, Utah State University, Logan 84322-4820.

Low dietary energy and decreased intake of herbage have been attributed to the reduced performance of grazing dairy cattle. We hypothesized that grasses with inherently greater energy would interact in a complementary way with condensed tannins (CT) in birdsfoot trefoil to increase herbage intake by grazing dairy heifers. Eight pasture treatments comprising high-sugar perennial ryegrass (Lolium perenne L. Read More

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Where trees cannot grow - Particulate matter accumulation by urban meadows.

Sci Total Environ 2021 Sep 24;785:147310. Epub 2021 Apr 24.

Section of Basic Research in Horticulture, Department of Plant Protection, Institute of Horticultural Sciences, Warsaw University of Life Sciences - SGGW (WULS-SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland.

It has already been proven that trees and shrubs, can efficiently remove particulate matter (PM) from air. However, almost nothing is known about PM accumulation by herbaceous plants (grasses and forbs) found in urban meadows. Meadows, unlike trees and shrubs, can be located close to roads, one of the main sources of PM in cites. Read More

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September 2021

Native Amazonian Grasses Show Distinct Nitrogen Growth Responses in Iron Mining Substrates.

Plants (Basel) 2021 Apr 22;10(5). Epub 2021 Apr 22.

Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Belém CEP 66055-090, Pará, Brazil.

Native species may have adaptive traits that are advantageous for overcoming the adverse environmental conditions faced during the early stages of mine land rehabilitation. Here, we examined the nitrogen (N) growth responses of two native perennial grasses ( and ) from in nutrient-poor iron mining substrates. We carried out vegetative propagation and recovered substantial healthy tillers from field-collected tussocks of both species. Read More

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Integrated Analysis of the Transcriptome and Metabolome Revealed Candidate Genes Involved in GA-Induced Dormancy Release in Seeds.

Int J Mol Sci 2021 Apr 17;22(8). Epub 2021 Apr 17.

College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China.

is a perennial forage grass that has good palatability, high yield and high feed value, but seed dormancy is a major problem limiting the widespread cultivation of . Here, we performed transcriptomic and metabolomic analysis of hulled and de-hulled seeds of treated with or without GA to investigate the changes in gene and metabolites associated with dormancy release induced by GA. The germination test revealed that the optimum concentration of GA for disruption of seed dormancy was 577 μM. Read More

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Simultaneous gene editing of three homoeoalleles in self-incompatible allohexaploid grasses.

J Integr Plant Biol 2021 Apr 29. Epub 2021 Apr 29.

CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan, 430074, China.

CRISPR/Cas system has been widely used for precise gene editing in plants. However, simultaneous gene editing of multiple homoeoalleles remains challenging, especially in self-incompatible polyploid plants. Here, we simultaneously introduced targeted mutations in all three homoeoalleles of two genes in the self-incompatible allohexaploid tall fescue, using both CRISPR/Cas9 and LbCas12a (LbCpf1) systems. Read More

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Chromosome-scale assembly and analysis of biomass crop Miscanthus lutarioriparius genome.

Nat Commun 2021 04 28;12(1):2458. Epub 2021 Apr 28.

National Center for Gene Research, State Key Laboratory of Plant Molecular Genetics, CAS Center of Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200233, China.

Miscanthus, a rhizomatous perennial plant, has great potential for bioenergy production for its high biomass and stress tolerance. We report a chromosome-scale assembly of Miscanthus lutarioriparius genome by combining Oxford Nanopore sequencing and Hi-C technologies. The 2. Read More

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Evaluation of rangeland condition in miombo woodlands in eastern Tanzania in relation to season and distance from settlements.

J Environ Manage 2021 Jul 19;290:112635. Epub 2021 Apr 19.

Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Box 7024, SE, 750 07, Uppsala, Sweden.

Miombo woodlands sustainability in east and south-central Africa is threatened by human activities, including overgrazing. This study investigated seasonal variations in rangeland condition in three grazed areas in miombo woodlands in eastern Tanzania. Transect lines were established across the grazing areas, sampling points were identified and marked at every 10% of the length of transect line. Read More

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First record of the ectoparasitic nematode (Nematoda: Tylenchida) on the perennial grass  ×  (Angiosperms: Poaceae) in Ukraine.

J Nematol 2021 6;53. Epub 2021 Mar 6.

Department of Plant Protection, Czech University of Life Sciences, Prague, Czech Republic.

The growing interest in biomass production of  ×  () (Poaceae) on agricultural and marginal lands has prompted researches to identify plant pathogens and diseases affecting this crop which has a great potential for production of biofuels and different bioproducts. A soil survey of nematodes in the rhizosphere and a report on the collection of the plant-parasitic nematode (Belonolaimidae) were accomplished in two locations in Ukraine. It is known that this family of nematodes can reduce the root system and biomass of Poaceae family plants. Read More

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A Systematic Review on the Effects of Fungal Endophytes on Drought Tolerance in Cool-Season Grasses.

Front Plant Sci 2021 24;12:644731. Epub 2021 Mar 24.

Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, Buenos Aires, Argentina.

Symptomless fungal endophytes in the genus are repeatedly mentioned to increase tolerance of cool-season grasses to a wide range of environmental stress factors, mainly drought. However, the generality of this idea is challenged because (i) most studies have been conducted on two economically important forage grasses {tall fescue [ (Schreb.) Dumort] and perennial ryegrass ( L. Read More

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A comparison of shared patterns of differential gene expression and gene ontologies in response to water-stress in roots and leaves of four diverse genotypes of Lolium and Festuca spp. temperate pasture grasses.

PLoS One 2021 8;16(4):e0249636. Epub 2021 Apr 8.

Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, Ceredigion, United Kingdom.

Ryegrasses (Lolium spp.) and fescues (Festuca spp.) are closely related and widely cultivated perennial forage grasses. Read More

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Non-Native Impacts Diversity of Pastures in South-Eastern Australia Even When Native Remains Co-Dominant.

Plants (Basel) 2021 Mar 22;10(3). Epub 2021 Mar 22.

Faculty of Science and the Centre for the Environment, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4001, Australia.

Lowland grassy woodlands in Australia's south-east face reductions in native plant diversity because of invasion by non-native plants. We compared the relative abundance and diversity of plant species among sites dominated by the native Kangaroo grass (KG) with sites co-dominated by the non-native African lovegrass (ALG) and KG. We found significant differences in plant species composition depending on the dominant species. Read More

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Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues.

J Vis Exp 2021 03 9(169). Epub 2021 Mar 9.

Laboratory of Biomass and Green Technologies, University of Liege (Gembloux Agro-Bio Tech Campus).

Pretreatment is still the most expensive step in lignocellulosic biorefinery processes. It must be made cost-effective by minimizing chemical requirements as well as power and heat consumption and by using environment-friendly solvents. Deep eutectic solvents (DESs) are key, green, and low-cost solvents in sustainable biorefineries. Read More

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Living with exotic annual grasses in the sagebrush ecosystem.

J Environ Manage 2021 Jun 23;288:112417. Epub 2021 Mar 23.

Department of Biology and Environmental Studies Program, University of Oregon, 12010 University of Oregon, Eugene, OR, 97405, USA.

Exotic annual grasses dominate millions of hectares and increase fire frequency in the sagebrush ecosystem of North America. This devastating invasion is so costly and challenging to revegetate with perennial vegetation that restoration efforts need to be prioritized and strategically implemented. Management needs to break the annual grass-fire cycle and prevent invasion of new areas, while research is needed to improve restoration success. Read More

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Linking Protein Quality in Biorefinery Output to Forage Crop Crude Protein Input via the Cornell Net Carbohydrate and Protein System.

Appl Biochem Biotechnol 2021 Mar 25. Epub 2021 Mar 25.

Department of Agroecology, Aarhus University, Blichers alle 20, 8830, Tjele, Denmark.

The biorefinery technology aiming at protein extraction is rising and identification of suitable plant biomass input with valuable protein compounds for extraction is needed. Forage crops have been evaluated by the Cornell Net Carbohydrate and Protein System (CNCPS), and the result used as proxy of extractable protein in a biorefinery process. This serves as a helpful link between crop production and refinery output; however, the method has never been validated. Read More

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Identification and Characterization of Perennial Ryegrass () Vernalization Genes.

Front Plant Sci 2021 5;12:640324. Epub 2021 Mar 5.

Department of Biochemistry, University of Otago, Dunedin, New Zealand.

Perennial ryegrass () is a temperate grass species commonly used as pasture for livestock. Flowering (heading) of ryegrass impacts metabolizable energy content and seed yield, therefore this trait is important for both farmers and seed producers. In related grass species, the genes (-) have been largely implicated in the determination of vernalization response and are responsible for much of the intra-species variation in this trait. Read More

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Draft genome assembly of the biofuel grass crop .

F1000Res 2021 18;10:29. Epub 2021 Jan 18.

Institute of Biological, Environmental & Rural Sciences (IBERS) - Aberystwyth University, Aberystwyth, SY23 3EE, UK.

(Maxim.) Hack. is a highly productive C4 perennial rhizomatous biofuel grass crop. Read More

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Proposal of an index of stability for evaluating plant drought memory: A case study in sugarcane.

J Plant Physiol 2021 May 3;260:153397. Epub 2021 Mar 3.

Laboratory of Plant Physiology 'Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), Campinas, SP, Brazil.

Stability is a key trait for plant growth and development in a changing environment, involving homeostasis and resilience. While homeostasis refers to the maintenance of the internal structural and functional plant integrity, resilience is associated with the plant ability in returning to the initial conditions after a given disturbance. Such concepts are especially relevant for perennial and semi-perennial plants facing seasonal and frequent stress conditions. Read More

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[The association between aeroallergenic structures and allergic rhinitis: a study on northern Vietnam].

Vestn Otorinolaringol 2021 ;86(1):51-57

Thainguyen Central Hospital, Thainguyen, Vietnam.

Recently, there has been an increase in the number of patients with allergic rhinitis (AR) and the number of publications devoted to this problem is increasing. The main etiological factors of AR are pollen of trees, meadow and weeds, as well as mold spores, household allergens and epidermis of animals. Epidemiological studies have found that the prevalence and structure of AR are influenced by regional characteristics, such as the climatic and geographical and social characteristics of the region, and successively therapeutic and preventive algorithms in AR are also different. Read More

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Chemical Differentiation of Sugarcane Cultivars Based on Volatile Profile and Chemometric Analysis.

J Agric Food Chem 2021 Mar 15;69(11):3548-3558. Epub 2021 Mar 15.

CQM, Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9020-105 Funchal, Portugal.

Sugarcane (SC) is a perennial grass widely cultivated in tropical and subtropical regions. However, its cultivation in Europe is residual, where Madeira Island, Portugal, is the only region where SC continues to be extensively cultivated. For the first time, the volatile profiles of regional cultivars were established by solid-phase microextraction combined with gas chromatography-mass spectrometry. Read More

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Genome-wide identification, characterization, and expression analysis of the NAC transcription factor family in orchardgrass (Dactylis glomerata L.).

BMC Genomics 2021 Mar 12;22(1):178. Epub 2021 Mar 12.

College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan Province, China.

Background: Orchardgrass (Dactylis glomerata L.) is one of the most important cool-season perennial forage grasses that is widely cultivated in the world and is highly tolerant to stressful conditions. However, little is known about the mechanisms underlying this tolerance. Read More

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Phytoremediation of potentially toxic elements using constructed wetlands in coastal areas with a mining influence.

Environ Geochem Health 2021 Apr 9;43(4):1385-1400. Epub 2021 Mar 9.

Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, University of Murcia, Campus Mare Nostrum, 30100, Murcia, Spain.

This paper proposes the use of wetlands as a phytoremediation strategy for areas of mining and maritime influence in the southeast of Spain. Potentially toxic elements (PTEs) tolerant and salinity-resistant macrophytes (Phragmites australis, Juncus effusus and Iris pseudacorus) have been used. The experiment is carried out in an aerobic artificial wetland using representative sediments affected by mining activities in the study area. Read More

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