Cited by 28Plant Surface Properties and TreatmentsPlant Water Relations and Carbon DynamicsPlant Stress Responses and Tolerance

Epicuticular-wax removal influences gas exchange and water relations in the leaves of an exotic and native species from a Brazilian semiarid region under induced drought stress

Figueiredo, Karla V., Oliveira, Marciel T., Oliveira, Antônio Fernando M., Silva, Gabriela C., Santos, Mauro G.·2012·Australian Journal of Botany

Abstract

The primary physiological function of the leaf cuticle is to limit water loss. Thus, in the present study, we examined the hypothesis that variation in the quality and content of the epicuticular wax between different species influences leaf gas exchange. Plants of Jatropha mollissima (Pohl) Bailon, a Brazilian semiarid native, and Jatropha curcas L. (Euphorbiaceae), an exotic species, were subjected to a water deficit in the presence or absence of epicuticular wax. Plants were grown in 10-L pots under greenhouse conditions. The relative water content, gas-exchange parameters and primary carbon metabolism were measured at 21 days after the irrigation was reduced to induce a water deficit. The well-watered plants of both species showed recovery of gas exchange days after the removal of epicuticular wax. Furthermore, under drought, a gradual increase in transpiration rates was observed only in the leaves of native species without wax, although the stomatal conductance did not differ between the species. High relative water content was maintained, except in the leaves under drought and without wax from Day 13 onward, when compared with all other treatments. The wax production was induced in both species under water shortage. Nevertheless, the native species showed a higher content of long-chain n-alkanes. In fact, the barrier to water vapour under reduced stomatal conductance was highest in the native species.

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Crossref · 10.1071/bt12168

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  • Waxes, cuticular plates, microdomains, and other physiological characteristics present in mango peel acted in a synergistic manner, causing low to acute toxicity of all treatments against the test pathogen.

    “The waxes (epicuticular wax layer), cuticular plates, microdomains (crystal and amorphous layer) and other physiological characteristic presents in mango peel was acted in synergistic manner; causing a low to acute toxicity of all the treatments (ALE and Mancozeb) used against the test pathogen25–28.”

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Authors
Figueiredo, K. V., Oliveira, M. T., Oliveira, A. F. M., Silva, G. C., & Santos, M. G.
Affiliations
Universidade Federal de Pernambuco (BR)
Corresponding author
Santos, Mauro G.
Venue
Australian Journal of Botany
Published
2012-11-30
Volume
60
Issue
8
Pages
685-692
ISSN
  • 0067-1924 (ISSN-L)
  • 1444-9862
OpenAlex
W2151167903
Cited by
27
References
36
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 5 · 2022: 1 · 2021: 3 · 2020: 3 · 2018: 4 · 2017: 2 · 2016: 1 · 2015: 3 · 2014: 1
FWCI
1.46
Type
journal article
Language
en
Open access
closed
Locations
Australian Journal of Botany (publishedVersion)
Funders
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Surface Properties and Treatments
  • Physical Sciences › Environmental Science › Global and Planetary Change › Plant Water Relations and Carbon Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
Keywords
epicuticular wax, wax removal, leaf cuticle, drought stress, gas exchange, transpiration, stomatal conductance, relative water content, Jatropha curcas, Jatropha mollissima, n-alkanes, water vapor barrier, carbon metabolism

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