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A Telemetric, Gravimetric Platform for Real-Time Physiological Phenotyping of Plant–Environment Interactions
Published on: August 5, 2020
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Drought's physiological footprint: implications for crop improvement in rice.
Sreevathsa Sagar1, Pushpam Ramamoorthy2, Suresh Ramalingam1
1Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, India.
Molecular Biology Reports
|March 10, 2025
Summary
Drought significantly impacts rice physiology and yield, threatening food security. Enhancing rice drought tolerance requires integrating genetics, physiology, and agronomy for resilient crop development.
Area of Science:
- Agricultural Science
- Plant Physiology
- Genetics
Background:
- Rice is a global staple food critically threatened by increasing drought stress.
- Drought negatively affects rice physiology across all growth stages, impacting yield, quality, and nutrition.
- Understanding drought's physiological effects is vital for ensuring global food security.
Purpose of the Study:
- To review and synthesize current knowledge on the physiological impacts of drought stress on rice.
- To highlight key mechanisms, responses, and adaptations contributing to drought tolerance in rice.
- To identify challenges and propose future research directions for improving rice drought resilience.
Main Methods:
- Literature review synthesizing existing research on rice drought physiology.
- Analysis of physiological traits influencing drought tolerance (e.g., root architecture, stomatal regulation, osmo-protectants).
- Examination of genetic approaches, including marker-assisted selection and genetic engineering for drought resilience.
Main Results:
- Drought stress disrupts rice physiology from germination to grain filling, affecting yield and nutritional value.
- Key physiological traits and genetic factors conferring drought tolerance have been identified.
- Significant challenges remain in understanding field-level impacts and improving screening methods.
Conclusions:
- Improving rice drought tolerance necessitates an integrated approach combining physiology, genetics, and agronomy.
- Developing advanced phenotyping tools and focusing on grain quality/nutrition under drought are critical research priorities.
- This review provides a framework for advancing rice resilience against drought stress.
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