Biomass Production, Arbuscular Mycorrhizae and Soil Plant-available P under Water Stress in Native Perennial Grasses

2010 ◽  
Author(s):  
C Busso ◽  
A Bolletta
Keyword(s):  
Water Stress ◽  
Biomass Production ◽  
Arbuscular Mycorrhizae ◽  
Perennial Grasses ◽  
Available P ◽  
Plant Available P

scholarly journals Influence of Arbuscular Mycorrhizae on Biomass Production and Nitrogen Fixation of Berseem Clover Plants Subjected to Water Stress

PLoS ONE ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. e90738 ◽  
Author(s):  
Sergio Saia ◽  
Gaetano Amato ◽  
Alfonso Salvatore Frenda ◽  
Dario Giambalvo ◽  
Paolo Ruisi
Keyword(s):  
Nitrogen Fixation ◽  
Water Stress ◽  
Biomass Production ◽  
Arbuscular Mycorrhizae ◽  
Berseem Clover

scholarly journals Menage a trois - are two fungi too much for ryegrass?

2007 ◽  
Vol 13 ◽  
pp. 181-183
Author(s):  
Q. Liu ◽  
A.J. Parsons ◽  
H. Xue ◽  
H. Harzer ◽  
S. Rasmussen
Keyword(s):  
Lolium Perenne ◽  
Glomus Mosseae ◽  
Arbuscular Mycorrhizae ◽  
Growth Parameters ◽  
Arbuscular Mycorrhizal ◽  
Available P ◽  
Higher Plant ◽  
Neotyphodium Lolii ◽  
Mycorrhizal Inoculation ◽  
Plant Available P

A pot experiment investigated interactions between foliar endophytic (EP, Neotyphodium lolii) and root arbuscular mycorrhizal (AM, Glomus mosseae) fungi in Lolium perenne. The effects of three phosphorus (P) forms (KH2PO4-P, phosphate rock-P (PR) and phytate-P) on EP and AM colonisation and plant growth parameters were also assessed. AM arbuscular and vesicular structures were estimated by microscopic counting and fungal concentrations were quantified by qPCR of G. mosseae and N. lolii specific genes. Significantly more AM structures were formed in roots of EP-free compared to EP-infected plants, indicating that AM development is suppressed by the presence of foliar EPs. Total AM concentrations were also generally higher in EP-free plant roots, but not significantly. EP concentrations were significantly reduced by higher plant-available P in the growth medium, but mycorrhizal infection did not significant affect EP concentrations. Mycorrhizal inoculation increased shoot dry matter (DM) at low plant-available P in the PR treatment. Infection with the endophytic strain AR37 also significantly increased shoot DM and fungal concentrations were higher compared to CS (common or wild-type strain)- and AR1-infected plants. Insoluble phytate-P produced the same amount of biomass as soluble-P (K-Pi) did, suggesting that L. perenne has the ability to use organic P. Keywords: Neotyphodium lolii, Glomus mosseae, foliar endophyte, arbuscular mycorrhizae, Lolium perenne, qPCR, phosphate, AR1, AR37

Short-term warming and water stress affect Panicum maximum Jacq. stoichiometric homeostasis and biomass production

2019 ◽  
Vol 681 ◽  
pp. 267-274 ◽  
Author(s):  
Dilier Olivera Viciedo ◽  
Renato de Mello Prado ◽  
Carlos Alberto Martínez ◽  
Eduardo Habermann ◽  
Marisa de Cássia Piccolo
Keyword(s):  
Water Stress ◽  
Biomass Production ◽  
Panicum Maximum ◽  
Short Term

Physiological and morphological responses to water stress in Aegilops biuncialis and Triticum aestivum genotypes with differing tolerance to drought

2004 ◽  
Vol 31 (12) ◽  
pp. 1149 ◽  
Author(s):  
István Molnár ◽  
László Gáspár ◽  
Éva Sárvári ◽  
Sándor Dulai ◽  
Borbála Hoffmann ◽  
...  
Keyword(s):  
Growth Rate ◽  
Triticum Aestivum ◽  
Water Stress ◽  
Drought Tolerance ◽  
Osmotic Stress ◽  
Biomass Production ◽  
Water Loss ◽  
Stomatal Closure ◽  
Co2 Assimilation ◽  
Wheat Genotypes

The physiological and morphological responses to water stress induced by polyethylene glycol (PEG) or by withholding water were investigated in Aegilops biuncialis Vis. genotypes differing in the annual rainfall of their habitat (1050, 550 and 225 mm year–1) and in Triticum aestivum L. wheat genotypes differing in drought tolerance. A decrease in the osmotic pressure of the nutrient solution from –0.027 to –1.8 MPa resulted in significant water loss, a low degree of stomatal closure and a decrease in the intercellular CO2 concentration (Ci) in Aegilops genotypes originating from dry habitats, while in wheat genotypes high osmotic stress increased stomatal closure, resulting in a low level of water loss and high Ci. Nevertheless, under saturating light at normal atmospheric CO2 levels, the rate of CO2 assimilation was higher for the Aegilops accessions, under high osmotic stress, than for the wheat genotypes. Moreover, in the wheat genotypes CO2 assimilation exhibited less or no O2 sensitivity. These physiological responses were manifested in changes in the growth rate and biomass production, since Aegilops (Ae550, Ae225) genotypes retained a higher growth rate (especially in the roots), biomass production and yield formation after drought stress than wheat. These results indicate that Aegilops genotypes, originating from a dry habitat have better drought tolerance than wheat, making them good candidates for improving the drought tolerance of wheat through intergeneric crossing.

Biomass production from neglected and underutilized tall perennial grasses on marginal lands in India: a brief review

2018 ◽  
Vol 3 (4) ◽  
pp. 207-215 ◽  
Author(s):  
Kripal Singh ◽  
Ashutosh Awasthi ◽  
Suresh Kumar Sharma ◽  
Shweta Singh ◽  
Shri Krishna Tewari
Keyword(s):  
Biomass Production ◽  
Perennial Grasses ◽  
Marginal Lands

scholarly journals Bud viability in perennial grasses: water stress and defoliation effects.

2006 ◽  
Vol 55 (2) ◽  
Author(s):  
A.C. Flemmer ◽  
C.A. Busso ◽  
O.A. Fernandez
Keyword(s):  
Water Stress ◽  
Perennial Grasses

scholarly journals Assimilation of Sentinel-2 Estimated LAI into a Crop Model: Influence of Timing and Frequency of Acquisitions on Simulation of Water Stress and Biomass Production of Winter Wheat

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1813
Author(s):  
Andreas Tewes ◽  
Carsten Montzka ◽  
Manuel Nolte ◽  
Gunther Krauss ◽  
Holger Hoffmann ◽  
...  
Keyword(s):  
Water Stress ◽  
Winter Wheat ◽  
Biomass Production ◽  
Aboveground Biomass ◽  
Stem Elongation ◽  
Simulation Models ◽  
Development Stage ◽  
Crop Model ◽  
Area Index ◽  
Sentinel 2

The Sentinel-2 (S2) Toolbox permits for the automated retrieval of leaf area index (LAI). LAI assimilation into crop simulation models could aid to improve the prediction accuracy for biomass at field level. We investigated if the combined effects of assimilation date and corresponding growth stage plus observational frequency have an impact on the crop model-based simulation of water stress and biomass production. We simulated winter wheat growth in nine fields in Germany over two years. S2 LAI estimations for each field were categorized into three phases, depending on the development stage of the crop at acquisition date (tillering, stem elongation, booting to flowering). LAI was assimilated in every possible combinational setup using the ensemble Kalman filter (EnKF). We evaluated the performance of the simulations based on the comparison of measured and simulated aboveground biomass at harvest. The results showed that the effects on water stress remained largely limited, because it mostly occurred after we stopped LAI assimilation. With regard to aboveground biomass, we found that the assimilation of only one LAI estimate from either the tillering or the booting to flowering stage resulted in simulated biomass values similar or closer to measured values than in those where more than one LAI estimate from the stem elongation phase were assimilated. LAI assimilation after the tillering phase might therefore be not necessarily required, as it may not lead to the desired improvement effect.

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