Drought tolerance of selected Eragrostis species correlates with leaf tensile properties.

Annals of Botany
R A BalsamoJ Farrant

Abstract

Previous studies on grass leaf tensile properties (behaviour during mechanical stress) have focused on agricultural applications such as resistance to trampling and palatability; no investigations have directly addressed mechanical properties during water stress, and hence these are the subject of this study. Critical (lethal) relative water contents were determined for three species of grass in the genus Eragrostis varying in their tolerance to drought. Measurements were taken for leaf tensile strength, elastic modulus, toughness and failure load under different conditions of hydration, and light microscopy and histochemical analyses were undertaken. Leaf tensile strength of fully hydrated leaves for the drought-intolerant E. capensis, the moderately drought-tolerant E. tef and the drought-tolerant E. curvula correlated well with drought tolerance (critical relative water content). Eragrostis curvula had higher tensile strength values than E. tef, which in turn had higher values than E. capensis. Measurements on the drought-tolerant grass E. curvula when fully hydrated and when dried to below its turgor loss point showed that tensile strength, toughness and the elastic modulus all increased under conditions of turgor loss, whi...Continue Reading

References

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Sep 6, 2000·Proceedings of the National Academy of Sciences of the United States of America·J A Orkwiszewski, R S Poethig

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Citations

Jun 1, 2016·Frontiers in Plant Science·Sonia Plaza-WüthrichZerihun Tadele
Aug 15, 2013·American Journal of Botany·Guillermo AngelesFernando Ortega-Escalona
May 23, 2008·Physiologia Plantarum·John P MooreAzeddine Driouich
Sep 13, 2008·The Plant Journal : for Cell and Molecular Biology·Jill M FarrantStefan Wiswedel
Sep 8, 2010·Functional & Integrative Genomics·Swatismita RayAkhilesh K Tyagi
Jan 23, 2020·Animals : an Open Access Journal From MDPI·Abiodun Mayowa AkanmuFestus Adeyemi Adejoro
Aug 5, 2017·Frontiers in Plant Science·Tirthankar BandyopadhyayManoj Prasad
Sep 13, 2014·Physiologia Plantarum·Agata RascioMassimiliano Valentini
Nov 16, 2017·Proteomes·Rizqah KamiesMohammed Suhail Rafudeen
Oct 13, 2020·Journal of Raman Spectroscopy : JRS·A RakymzhanZ N Utegulov
Oct 11, 2020·The New Phytologist·Kyle W DemesChristopher D G Harley
Aug 14, 2021·The Plant Cell·Jeremy Pardo, Robert VanBuren
May 1, 2017··Zhandos N. UtegulovAdiya Rakymzhan

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