How crops secretly cope with too much water
Praveen A, Singh S
Climate Adaptation
If your garden beds turned to mud puddles after last week's storm, the same survival tricks this review covers, like plants growing snorkel-like air channels and sprouting new roots near the surface, are what determine whether your vegetables bounce back or rot.
When soil floods, plant roots get cut off from oxygen and can suffocate, so plants have evolved clever workarounds: some grow spongy air-filled tissue that acts like an internal snorkel, others sprout new roots higher up on the stem to reach oxygen, and many rely on a hormone called ethylene to sense they're underwater and trigger these changes. This review rounds up decades of research on these survival tricks and the genes behind them, hoping to help scientists breed crops like rice and wheat that can better handle the flash floods and waterlogging becoming more common with climate change.
Key Findings
Plants use distinct survival strategies depending on oxygen levels (normoxia, hypoxia, anoxia), including anaerobic germination, adventitious root formation, and aerenchyma (spongy air-channel tissue) development.
The ERF-VII family of ethylene-responsive transcription factors plays a central regulatory role in flooding tolerance across major crop species.
Radial oxygen loss (ROL) fences, fermentative metabolism, nitric oxide signaling, and hyponastic leaf movement all contribute to how plants cope with waterlogging and submergence.
chevron_right Technical Summary
This review pulls together everything scientists know about how crops survive flooding, from root and stem changes to the genes and hormones that control them, aiming to help breeders create flood-resistant crop varieties as climate change brings more extreme rain and flooding events.
Abstract Preview
Original paper
Flooding stress resilience and crop improvement.
Promoting the long-term viability of agriculture in the face of climate change has spurred a rise in alternative approaches to enhance crop resilience. Universally, the significant risk of crop yie...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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