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Influence of Soil Water Status on Arbuscular Mycorrhizas in Three Perennial Grasses in Central Argentina
(Finnish Zoological and Botanical Publishing Board, 2008-12)
In this field study, we determined the effects of water stress, rainfed or irrigated conditions on the arbuscular mycorrhizal fungal (AMF) root colonization in the late-seral Stipa clarazii, the earlier-seral S. tenuis and ...
A differential capacity of arbuscular mycorrhizal fungal colonization under well-watered conditions and its relationship with drought stress mitigation in unimproved vs improved soybean genotypes
(Canadian Science Publishing, 2018-11)
Modern breeding programs may cause a reduction in plant responsiveness to arbuscular mycorrhizal (AM) fungi. In this study, we tested the hypothesis that responses such as higher arbuscule formation and mycorrhizal dependency ...
Soil Phosphorus Concentration under the Canopy of Perennial Grasses of Different Successional Stages Exposed to Water Stress
(Taylor and Francis, 2008-10)
In this field study, the effects of water‐stress, rainfed, or irrigated conditions on soil phosphorus (P) concentration under the canopy of the native grasses of semi‐arid Argentina (late seral Stipa clarazii Ball., early ...
Biomass production, arbuscular mycorrhizae and soil plant-available P under water stress in native perennial grasses
(CRC Press-Taylor & Francis, 2010-10)
Precipitation determines vegetation type and species relative composition in plant communities [1]; in addition, it is a primary variable affecting soil water storage and availability. This availability is the most important ...
Genes modulating the increase in sexuality in the facultative diplosporous grass eragrostis curvula under water stress conditions
(Multidisciplinary Digital Publishing Institute, 2020-09-21)
Eragrostis curvula presents mainly facultative genotypes that reproduce by diplosporous apomixis, retaining a percentage of sexual pistils that increase under drought and other stressful situations, indicating that some ...
Do species' strategies and type of stress predict net positive effects in an arid ecosystem?
(Ecological Society of America, 2017-03)
A proposed refinement to the stress-gradient hypothesis requires consideration of the strategies of the interacting species and the characteristics of the stress factors. While the strength and direction of these interactions ...
Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
(Czech Academy of Agricultural Sciences, 2009-12)
Net photosynthetic rate (A) and stomatal conductance (gs) of seedlings of Nothofagus. pumilio and N. antarctica leaves were measured at different light intensity (20, 150, 250, 500, 750, 1000, 1500 and 2200 µmol m-2 s-1 ...
Interaction of light and water stress on the ecophysiological response of Nothofagus antarctica (G. Forster) Oerst.
(Instituto de Ciências Agrárias e Ambientais Mediterrânicas da Universidade de Évora, 2014-09-30)
Nothofagus antarctica (G. Forster) Oerst. (ñire) occupies a latitudinal gradient ranged from 36° 30´ to 56° 00’ S, and extends from sea level to 2,000 m a.s.l. It is the species with widest ecological amplitude in Nothofagus ...
Validation of housekeeping genes for qPCR in maize during water deficit stress conditions at flowering time
(2017)
Plant stress studies are increasingly being based on gene expression. The analysis of gene expression requires sensitive, precise, and replicable measurements for specific mRNA sequences. Real-time RT-PCR is nowadays the ...
Arsenic stress effects on root water absorption in soybean plants: Physiological and morphological aspects
(Elsevier France-editions Scientifiques Medicales Elsevier, 2018-02)
Soybean (Glycine max L.) is often cultivated in areas contaminated with arsenic (As), which negatively affects plant growth and reduces crop yield. The deleterious effects may be due, at least in part, to disturbances in ...