Cargando…
Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies
Water-saver and water-spender strategies are successful adaptations allowing plants to cope with the limitations of hot desert habitats. We investigated whether the efficacy of the cuticular transpiration barrier and its susceptibility to high temperatures are ecophysiological traits differentially...
Autores principales: | , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416792/ https://www.ncbi.nlm.nih.gov/pubmed/30715440 http://dx.doi.org/10.1093/jxb/erz018 |
_version_ | 1783403429248368640 |
---|---|
author | Bueno, Amauri Alfarhan, Ahmed Arand, Katja Burghardt, Markus Deininger, Ann-Christin Hedrich, Rainer Leide, Jana Seufert, Pascal Staiger, Simona Riederer, Markus |
author_facet | Bueno, Amauri Alfarhan, Ahmed Arand, Katja Burghardt, Markus Deininger, Ann-Christin Hedrich, Rainer Leide, Jana Seufert, Pascal Staiger, Simona Riederer, Markus |
author_sort | Bueno, Amauri |
collection | PubMed |
description | Water-saver and water-spender strategies are successful adaptations allowing plants to cope with the limitations of hot desert habitats. We investigated whether the efficacy of the cuticular transpiration barrier and its susceptibility to high temperatures are ecophysiological traits differentially developed in the water-spender Citrullus colocynthis and the water-saver Phoenix dactylifera. Minimum leaf conductance (g(min)) at 25 °C was six times lower in P. dactylifera (1.1×10(–5) m s(–1)) than in C. colocynthis (6.9×10(–5) m s(–1)). Additionally, g(min) in the range 25–50 °C did not change in P. dactylifera but increased by a factor of 3.2 in C. colocynthis. Arrhenius formalism applied to the C. colocynthis g(min) led to a biphasic graph with a steep increase at temperatures ≥35 °C, whereas for P. dactylifera the graph was linear over all temperatures. Leaf cuticular wax coverage amounted to 4.2±0.4 µg cm(–2) for C. colocynthis and 29.4±4.2 µg cm(–2) for P. dactylifera. In both species, waxes were mainly composed of very-long-chain aliphatics. Midpoints of the wax melting ranges of P. dactylifera and C. colocynthis were 80 °C and 73 °C, respectively. We conclude that in P. dactylifera a particular wax and cutin chemistry prevents the rise of g(min) at elevated temperatures. |
format | Online Article Text |
id | pubmed-6416792 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-64167922019-03-19 Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies Bueno, Amauri Alfarhan, Ahmed Arand, Katja Burghardt, Markus Deininger, Ann-Christin Hedrich, Rainer Leide, Jana Seufert, Pascal Staiger, Simona Riederer, Markus J Exp Bot Research Papers Water-saver and water-spender strategies are successful adaptations allowing plants to cope with the limitations of hot desert habitats. We investigated whether the efficacy of the cuticular transpiration barrier and its susceptibility to high temperatures are ecophysiological traits differentially developed in the water-spender Citrullus colocynthis and the water-saver Phoenix dactylifera. Minimum leaf conductance (g(min)) at 25 °C was six times lower in P. dactylifera (1.1×10(–5) m s(–1)) than in C. colocynthis (6.9×10(–5) m s(–1)). Additionally, g(min) in the range 25–50 °C did not change in P. dactylifera but increased by a factor of 3.2 in C. colocynthis. Arrhenius formalism applied to the C. colocynthis g(min) led to a biphasic graph with a steep increase at temperatures ≥35 °C, whereas for P. dactylifera the graph was linear over all temperatures. Leaf cuticular wax coverage amounted to 4.2±0.4 µg cm(–2) for C. colocynthis and 29.4±4.2 µg cm(–2) for P. dactylifera. In both species, waxes were mainly composed of very-long-chain aliphatics. Midpoints of the wax melting ranges of P. dactylifera and C. colocynthis were 80 °C and 73 °C, respectively. We conclude that in P. dactylifera a particular wax and cutin chemistry prevents the rise of g(min) at elevated temperatures. Oxford University Press 2019-02-15 2019-01-30 /pmc/articles/PMC6416792/ /pubmed/30715440 http://dx.doi.org/10.1093/jxb/erz018 Text en © The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Papers Bueno, Amauri Alfarhan, Ahmed Arand, Katja Burghardt, Markus Deininger, Ann-Christin Hedrich, Rainer Leide, Jana Seufert, Pascal Staiger, Simona Riederer, Markus Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies |
title | Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies |
title_full | Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies |
title_fullStr | Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies |
title_full_unstemmed | Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies |
title_short | Effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies |
title_sort | effects of temperature on the cuticular transpiration barrier of two desert plants with water-spender and water-saver strategies |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416792/ https://www.ncbi.nlm.nih.gov/pubmed/30715440 http://dx.doi.org/10.1093/jxb/erz018 |
work_keys_str_mv | AT buenoamauri effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT alfarhanahmed effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT arandkatja effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT burghardtmarkus effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT deiningerannchristin effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT hedrichrainer effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT leidejana effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT seufertpascal effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT staigersimona effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies AT riederermarkus effectsoftemperatureonthecuticulartranspirationbarrieroftwodesertplantswithwaterspenderandwatersaverstrategies |