Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae

ABSTRACT The quick adjustments of leaf traits are critical for keeping the survival of plants under dehydration. In this study, we examined the hypotheses that plants would adapt to dehydration by shrinking its mesophyll cells to offset the water loss, or triggering water regulation mechanism caused...

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Autores principales:	Xing,Deke, Chen,Xiaole, Wu,Yanyou, Li,Zhenyi, Khan,Shanjida
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2021
Materias:	Anatomical structure Broussonetia papyrifera cell volume leaf tensity mechanical strength Morus alba water translocation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300434
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spelling	oai:scielo:S0718-583920210003004342021-08-16Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of MoraceaeXing,DekeChen,XiaoleWu,YanyouLi,ZhenyiKhan,Shanjida Anatomical structure Broussonetia papyrifera cell volume leaf tensity mechanical strength Morus alba water translocation ABSTRACT The quick adjustments of leaf traits are critical for keeping the survival of plants under dehydration. In this study, we examined the hypotheses that plants would adapt to dehydration by shrinking its mesophyll cells to offset the water loss, or triggering water regulation mechanism caused by enzymes. Leaf structure, elastic modulus (Em), leaf tensity (LT) and leaf density (LD) were determined with detached leaves of Broussonetia papyrifera (L.) Vent. and Morus alba L. at each water loss moment (0, 1, 2, 3, 4 and 5 h). The coupling model between gripping force and LT was established using the Gibbs free energy equation, and the initial LT was determined. The intracellular water availability of M. alba decreased at 4 h, which was earlier than that of B. papyrifera. The intracellular water availability of M. alba was more sensitive than B. papyrifera. Broussonetia papyrifera adapted to dehydration by shrinking its mesophyll cells to offset the water loss, or triggering water regulation mechanism caused by enzymes, i.e., carbonic anhydrase. The sponge parenchyma of B. papyrifera at 3 h decreased by 25.73% of that at control. Morus alba maintained intracellular water availability just by changing the leaf structure. The offset effects through shrinking cells differed between B. papyrifera and M. alba, because the elastic-plastic behavior of their leaves and cells were different. The Em of M. alba was over five-fold higher than that of B. papyrifera. The investigations of water status were more accurate in terms of leaf physical traits instead of water content.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.81 n.3 20212021-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300434en10.4067/S0718-58392021000300434
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Anatomical structure Broussonetia papyrifera cell volume leaf tensity mechanical strength Morus alba water translocation
spellingShingle	Anatomical structure Broussonetia papyrifera cell volume leaf tensity mechanical strength Morus alba water translocation Xing,Deke Chen,Xiaole Wu,Yanyou Li,Zhenyi Khan,Shanjida Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae
description	ABSTRACT The quick adjustments of leaf traits are critical for keeping the survival of plants under dehydration. In this study, we examined the hypotheses that plants would adapt to dehydration by shrinking its mesophyll cells to offset the water loss, or triggering water regulation mechanism caused by enzymes. Leaf structure, elastic modulus (Em), leaf tensity (LT) and leaf density (LD) were determined with detached leaves of Broussonetia papyrifera (L.) Vent. and Morus alba L. at each water loss moment (0, 1, 2, 3, 4 and 5 h). The coupling model between gripping force and LT was established using the Gibbs free energy equation, and the initial LT was determined. The intracellular water availability of M. alba decreased at 4 h, which was earlier than that of B. papyrifera. The intracellular water availability of M. alba was more sensitive than B. papyrifera. Broussonetia papyrifera adapted to dehydration by shrinking its mesophyll cells to offset the water loss, or triggering water regulation mechanism caused by enzymes, i.e., carbonic anhydrase. The sponge parenchyma of B. papyrifera at 3 h decreased by 25.73% of that at control. Morus alba maintained intracellular water availability just by changing the leaf structure. The offset effects through shrinking cells differed between B. papyrifera and M. alba, because the elastic-plastic behavior of their leaves and cells were different. The Em of M. alba was over five-fold higher than that of B. papyrifera. The investigations of water status were more accurate in terms of leaf physical traits instead of water content.
author	Xing,Deke Chen,Xiaole Wu,Yanyou Li,Zhenyi Khan,Shanjida
author_facet	Xing,Deke Chen,Xiaole Wu,Yanyou Li,Zhenyi Khan,Shanjida
author_sort	Xing,Deke
title	Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae
title_short	Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae
title_full	Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae
title_fullStr	Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae
title_full_unstemmed	Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae
title_sort	changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of moraceae
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300434
work_keys_str_mv	AT xingdeke changesinelasticmodulusleaftensityandleafdensityduringdehydrationofdetachedleavesintwoplantspeciesofmoraceae AT chenxiaole changesinelasticmodulusleaftensityandleafdensityduringdehydrationofdetachedleavesintwoplantspeciesofmoraceae AT wuyanyou changesinelasticmodulusleaftensityandleafdensityduringdehydrationofdetachedleavesintwoplantspeciesofmoraceae AT lizhenyi changesinelasticmodulusleaftensityandleafdensityduringdehydrationofdetachedleavesintwoplantspeciesofmoraceae AT khanshanjida changesinelasticmodulusleaftensityandleafdensityduringdehydrationofdetachedleavesintwoplantspeciesofmoraceae
_version_	1714205413739593728

Changes in elastic modulus, leaf tensity and leaf density during dehydration of detached leaves in two plant species of Moraceae

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