Plant response to and recovery from drought.
Wang J, Xu Z
Climate Adaptation
The tomatoes wilting in your garden and the trees lining your street are entering an era of more frequent, harsher droughts, and whether they bounce back after rain—or slowly decline—depends on biological processes we are only beginning to understand.
When plants are starved of water, they kick off a chain reaction of chemical signals that close their tiny pores, slow their growth, and rewire their internal chemistry just to survive. Scientists have gotten pretty good at understanding the 'battening down the hatches' part, but this review points out that we know surprisingly little about how plants actually recover once the rain comes back. The researchers pulled together findings from microscopic gene switches all the way up to forest-wide productivity to build a fuller picture of plant resilience—and flagged that underground soil microbes play a much bigger role in that recovery than we've given them credit for.
Key Findings
Abscisic acid (ABA) acts as the master coordinator of plant drought responses, simultaneously triggering stomatal closure to cut water loss, driving osmotic adjustments inside cells, and switching on stress-response genes.
Post-drought recovery is critically understudied relative to drought stress itself, yet recovery dynamics are essential for long-term plant performance and ecosystem resilience under increasing climate variability.
Soil microbial communities act as key mediators of plant-soil feedbacks, helping sustain ecosystem function during and after drought, while precipitation variability shapes vegetation productivity partly through its effects on biodiversity.
chevron_right Technical Summary
A comprehensive review synthesizes how plants respond to drought across every scale—from hormonal signals in individual cells to productivity across entire ecosystems—and reveals that the recovery phase after rainfall returns is critically understudied, even as climate change makes droughts more frequent and severe worldwide.
Abstract Preview
Drought is a pervasive stress limiting plant growth and survival across ecosystems, and its frequency and severity are rising with climate change, threatening global food and ecological security. W...
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