Cited by 3,845Plant Stress Responses and TolerancePlant Water Relations and Carbon DynamicsTurfgrass Adaptation and Management

Understanding plant responses to drought—from genes to the whole plant.

Chaves, Manuela M., Maroco, João P., Pereira, João S.·2003·Functional Plant Biology

Abstract

In the last decade, our understanding of the processes underlying plant response to drought, at the molecular and whole-plant levels, has rapidly progressed. Here, we review that progress. We draw attention to the perception and signalling processes (chemical and hydraulic) of water deficits. Knowledge of these processes is essential for a holistic understanding of plant resistance to stress, which is needed to improve crop management and breeding techniques. Hundreds of genes that are induced under drought have been identified. A range of tools, from gene expression patterns to the use of transgenic plants, is being used to study the specific function of these genes and their role in plant acclimation or adaptation to water deficit. However, because plant responses to stress are complex, the functions of many of the genes are still unknown. Many of the traits that explain plant adaptation to drought — such as phenology, root size and depth, hydraulic conductivity and the storage of reserves — are those associated with plant development and structure, and are constitutive rather than stress induced. But a large part of plant resistance to drought is the ability to get rid of excess radiation, a concomitant stress under natural conditions. The nature of the mechanisms responsible for leaf photoprotection, especially those related to thermal dissipation, and oxidative stress are being actively researched. The new tools that operate at molecular, plant and ecosystem levels are revolutionising our understanding of plant response to drought, and our ability to monitor it. Techniques such as genome-wide tools, proteomics, stable isotopes and thermal or fluorescence imaging may allow the genotype–phenotype gap to be bridged, which is essential for faster progress in stress biology research.

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Crossref · 10.1071/fp02076

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241 of 241 references verified0 citation errors · 0 not checkable

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Authors
Chaves, M. M., Maroco, J. P., & Pereira, J. S.
Affiliations
Universidade Técnica de Lisboa (PT)
Venue
Functional Plant Biology
Published
2003-03-14
Volume
30
Issue
3
Pages
239-264
ISSN
  • 1445-4408 (ISSN-L)
  • 1445-4416
OpenAlex
W2099524720
Cited by
3,845
References
242
Citations by year
2026: 177 · 2025: 189 · 2024: 186 · 2023: 221 · 2022: 237 · 2021: 263 · 2020: 236 · 2019: 262 · 2018: 210 · 2017: 185 · 2016: 249 · 2015: 188 · 2014: 240 · 2013: 199 · 2012: 176
FWCI
47.34
Type
journal article
Language
en
Open access
closed
Locations
  • Functional Plant Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Physical Sciences › Environmental Science › Global and Planetary Change › Plant Water Relations and Carbon Dynamics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Turfgrass Adaptation and Management
Keywords
drought stress, plant responses to drought, drought-inducible genes, plant acclimation, photoprotection, non-photochemical quenching, oxidative stress, root architecture, hydraulic conductivity, reserve storage, phenology, transgenic plants, drought tolerance breeding

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