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Open AccessJournal ArticleDOI

The physiology of plant responses to drought

Aditi Gupta, +2 more
- 17 Apr 2020 - 
- Vol. 368, Iss: 6488, pp 266-269
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TLDR
How engineering hormone signaling in specific cells and cellular domains can facilitate improved plant responses to drought is discussed and current knowledge and future questions central to the quest to produce high-yield, drought-resistant crops are explored.
Abstract
Drought alone causes more annual loss in crop yield than all pathogens combined. To adapt to moisture gradients in soil, plants alter their physiology, modify root growth and architecture, and close stomata on their aboveground segments. These tissue-specific responses modify the flux of cellular signals, resulting in early flowering or stunted growth and, often, reduced yield. Physiological and molecular analyses of the model plant Arabidopsis thaliana have identified phytohormone signaling as key for regulating the response to drought or water insufficiency. Here we discuss how engineering hormone signaling in specific cells and cellular domains can facilitate improved plant responses to drought. We explore current knowledge and future questions central to the quest to produce high-yield, drought-resistant crops.

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Abiotic stress responses in plants.

TL;DR: In this paper, the molecular mechanisms underlying the responses of plants to abiotic stresses emphasizes their multilevel nature; multiple processes are involved, including sensing, signalling, transcription, transcript processing, translation and post-translational protein modifications.
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Integration of reactive oxygen species and hormone signaling during abiotic stress.

TL;DR: The integration of ROS and hormone signaling during early and late phases of the plant response to abiotic stress, the key role of respiratory burst oxidase homologs (RBOHs) in the integration of Roses, and the involvement of hormone and ROS in systemic signaling events that lead to systemic acquired acclimation are highlighted.
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Drought Tolerance in Rice: Focus on Recent Mechanisms and Approaches

TL;DR: In this review, a great progress has been made during last two decades in understanding of the mechanisms involved in adaptation and tolerance to drought stress in rice, and the recent progresses in physiological, biochemical and molecular adaptation of rice to drought tolerance are highlighted.
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Root plasticity under abiotic stress

TL;DR: Insight is provided into recent discoveries showing the importance of root system architecture and plasticity for the survival and development of plants under heat, cold, drought, salt, and flooding stress and the cellular mechanisms behind these different root tropisms.
References
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Journal ArticleDOI

The genetic basis of flowering responses to seasonal cues

TL;DR: Progress is reported in defining the diverse genetic mechanisms that enable plants to recognize winter, spring and autumn to initiate flower development.
Journal ArticleDOI

Genetic strategies for improving crop yields

TL;DR: The potential of plant sciences to address post-Green Revolution challenges in agriculture is considered and emerging strategies for enhancing sustainable crop production and resilience in a changing climate are explored.
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Q1. What are the contributions in this paper?

Here, the authors discuss how engineering hormone signaling in specific cells and cellular domains 20 promises to improve plant responses to drought.