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Plant responses to water stress
Research Guide
What is Plant responses to water stress?
Plant responses to water stress encompass the physiological, molecular, and genetic mechanisms by which plants adapt to flooding stress, including submergence tolerance, aerenchyma formation, ethylene response factors, hypoxia adaptation, oxygen sensing, anaerobic metabolism, root aeration, and waterlogging tolerance.
This field includes 42,034 works focused on how plants cope with low-oxygen environments during complete submergence and waterlogging. Key processes involve antioxidants mitigating oxidative damage from oxygen deprivation, as detailed in 'Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review' (2002). Reactive oxygen species (ROS) homeostasis plays a dual role in signaling and damage during drought and salinity stresses, per 'Reactive oxygen species homeostasis and signalling during drought and salinity stresses' (2009).
Topic Hierarchy
Research Sub-Topics
Submergence Tolerance Mechanisms in Rice
This sub-topic investigates genetic regulation of quiescence and escape strategies enabling rice survival during complete flooding. Researchers characterize SUB1A QTL, ethylene signaling, and hormonal interactions controlling internode elongation.
Aerenchyma Formation under Hypoxic Conditions
This sub-topic studies developmental programs forming cortical air channels for oxygen transport to roots in flooded soils. Researchers elucidate cell death regulation, radial O2 loss barriers, and genetic controls of lysigenous aerenchyma.
Ethylene Response Factors in Flooding Stress
This sub-topic examines group VII ERF transcription factors sensing oxygen deprivation via N-end rule pathway. Researchers analyze ERF-VII targets regulating anaerobic gene expression and submergence escape.
Plant Anaerobic Metabolism Regulation
This sub-topic explores metabolic reprogramming sustaining energy production without oxygen, including fermentation pathways and metabolite toxicity avoidance. Researchers study regulatory networks integrating hypoxia signaling with carbon-nitrogen balance.
Root Aeration Strategies in Waterlogged Soils
This sub-topic investigates adventitious root architecture, porosity development, and barrier formation preventing radial oxygen loss. Researchers quantify oxygen transport efficiency across wetland species and genotypes.
Why It Matters
Plant responses to water stress directly impact crop management under flooding and drought conditions, enabling development of tolerant varieties for sustainable agriculture. Blokhina (2002) in 'Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review' explains how oxygen deprivation induces oxidative stress across transient hypoxia, anoxia, and post-anoxia, affecting root and shoot functions in species like maize and rice. Miller et al. (2009) in 'Reactive oxygen species homeostasis and signalling during drought and salinity stresses' show ROS production increases under water deficit, disrupting photosynthesis and requiring balanced signaling for survival, with applications in salinity-tolerant crops. Farooq et al. (2008) in 'Plant drought stress: effects, mechanisms and management' outline strategies like osmolyte accumulation and hormone regulation, improving yields in water-scarce regions such as South Asia, where drought reduces production by up to 50% in wheat and rice.
Reading Guide
Where to Start
'Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review' (2002) by Blokhina, as it provides a foundational review of oxidative stress states under oxygen shortage, accessible for understanding core physiological responses.
Key Papers Explained
'Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review' (2002) by Blokhina establishes oxidative stress from oxygen deprivation, which 'Reactive oxygen species homeostasis and signalling during drought and salinity stresses' (2009) by Miller et al. extends to ROS dual roles in drought signaling. 'Plant drought stress: effects, mechanisms and management' (2008) by Farooq et al. builds on these by detailing management strategies like osmolyte use, connecting physiological insights to agronomic applications.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Research continues on hypoxia adaptation and anaerobic metabolism, with the 42,034 works emphasizing ethylene response factors and oxygen sensing, though no recent preprints or news specify new frontiers.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Guidelines for the use and interpretation of assays for monito... | 2016 | Autophagy | 5.9K | ✓ |
| 2 | Guidelines for the use and interpretation of assays for monito... | 2012 | Autophagy | 4.0K | ✓ |
| 3 | Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: ... | 2002 | Annals of Botany | 3.9K | ✓ |
| 4 | Plant drought stress: effects, mechanisms and management | 2008 | Agronomy for Sustainab... | 3.9K | ✕ |
| 5 | Reactive oxygen species homeostasis and signalling during drou... | 2009 | Plant Cell & Environment | 3.9K | ✕ |
| 6 | Bcl-2 Antiapoptotic Proteins Inhibit Beclin 1-Dependent Autophagy | 2005 | Cell | 3.4K | ✓ |
| 7 | Autophagy and the Integrated Stress Response | 2010 | Molecular Cell | 3.4K | ✓ |
| 8 | Induction of autophagy and inhibition of tumorigenesis by becl... | 1999 | Nature | 3.3K | ✕ |
| 9 | ROS Are Good | 2016 | Trends in Plant Science | 3.2K | ✓ |
| 10 | On The Instability Of Jets | 1878 | Proceedings of the Lon... | 2.9K | ✓ |
Frequently Asked Questions
What role do antioxidants play in oxygen deprivation stress?
Antioxidants mitigate oxidative damage induced by oxygen deprivation in plants, distinguishing transient hypoxia, anoxia, and post-anoxia states. Blokhina (2002) in 'Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review' notes this stress affects roots more severely, with ROS accumulation leading to lipid peroxidation unless countered by enzymatic defenses like superoxide dismutase.
How do reactive oxygen species function during drought stress?
Reactive oxygen species (ROS) act dually in plants as damaging agents and signaling molecules during drought and salinity stresses. Miller et al. (2009) in 'Reactive oxygen species homeostasis and signalling during drought and salinity stresses' describe how water deficit disrupts photosynthesis, elevating ROS that trigger adaptive gene expression for homeostasis. High light intensifies this, necessitating antioxidants for balance.
What are the main effects of plant drought stress?
Drought stress impairs plant growth through reduced water availability, affecting physiological processes like stomatal closure and photosynthesis. Farooq et al. (2008) in 'Plant drought stress: effects, mechanisms and management' identify mechanisms including oxidative stress and osmotic adjustment, with management via genetic selection for deeper roots enhancing tolerance.
Why is ROS homeostasis critical under water stress?
ROS homeostasis maintains cellular integrity and enables stress signaling in plants facing drought and salinity. Miller et al. (2009) in 'Reactive oxygen species homeostasis and signalling during drought and salinity stresses' highlight how imbalances from photorespiration lead to damage, while controlled ROS levels activate defenses like antioxidant enzymes.
How does oxygen deprivation cause oxidative stress in plants?
Oxygen deprivation triggers oxidative stress via ROS bursts during reoxygenation after anoxia. Blokhina (2002) in 'Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review' details how this occurs in low-oxygen roots, with antioxidants preventing membrane damage and supporting recovery.
Open Research Questions
- ? How do plants precisely regulate ROS signaling without triggering cellular damage during prolonged submergence?
- ? What genetic factors control aerenchyma formation for root aeration under waterlogging?
- ? How do ethylene response factors integrate hypoxia adaptation across diverse plant species?
- ? What mechanisms link oxygen sensing to anaerobic metabolism shifts in flooded roots?
- ? How can submergence tolerance be enhanced through targeted breeding for waterlogged crops?
Recent Trends
The field encompasses 42,034 works on plant responses to water stress, focusing on flooding and submergence without specified 5-year growth data.
Highly cited reviews like 'Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review' (2002, 3942 citations) by Blokhina and 'Reactive oxygen species homeostasis and signalling during drought and salinity stresses' (2009, 3861 citations) by Miller et al. indicate sustained interest in oxidative mechanisms, with no recent preprints or news reported.
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