Plants remember heat stress and pass the memory to seeds
Ren H, Liu H, Tang W
Climate Adaptation
The tomatoes that stall out during a heat wave and the seedlings that seem to 'toughen up' after a rough summer are both responding to the same molecular switches this research maps out, which could soon show up as more heat-tolerant varieties at your local nursery.
Plants can't move to the shade when it gets too hot, so they've evolved internal alarm systems that sense rising temperatures and trigger protective responses, like a molecular version of sweating or seeking shelter. This review explains how key proteins act as thermostats and how plants can even chemically mark their genes after a heat event, creating a kind of stress memory that can influence how their offspring handle future hot spells. The hope is that scientists can use this knowledge to breed crops that shrug off heat waves instead of wilting under them.
Key Findings
PIF4 and HSFA1 transcription factors act as central regulators, driving heat-adaptive growth changes and heat shock responses respectively, through crosstalk with light, circadian, and hormone signaling pathways
Epigenetic mechanisms, including dynamic changes to the histone variant H2A.Z and HSFA2-mediated chromatin remodeling, control how plants adjust and 'remember' thermal stress
Small interfering RNAs (siRNAs) enable transgenerational thermomemory, allowing heat stress information to be passed to subsequent generations, though core questions about temperature sensing and HSFA1 activation remain unresolved
chevron_right Technical Summary
Scientists are piecing together how plants sense and survive heat, from quick chemical alarm signals to lasting changes in how genes are packaged that can even be passed to offspring. Understanding this could help breed crops that hold up better as the climate warms.
Abstract Preview
Original paper
Molecular mechanisms of plant thermal response: from signal transduction and epigenetic regulation to signaling integration.
Global warming intensification elevates heat stress to one of the major threats to crop productivity. This review synthesizes recent advances in understanding the mechanisms governing plant respons...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Gene editing removes 97% of celiac-triggering proteins from bread wheat
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...
Plant signaling encompasses the molecular and cellular mechanisms by which plants perceive and respond to environmental changes, hormonal signals, and stress conditions. These signaling pathways regulate fundamental biological processes including growth, development, nutrient acquisition, and
arrow_forward Explore topic