FERONIA Limits Jasmonic Acid Overaccumulation and Oxidative Stress to Enable Plant Survival Under Sustained Elevated Temperature.

FERONIA is indispensable for Arabidopsis thaliana growth and survival at warm temperatures, where fer loss-of-function mutants show impaired thermomorphogenic growth and hypersensitivity to mild heat stress.

• Why it matters: Plants need mechanisms to withstand sustained elevated temperatures, but FERONIA’s role in heat adaptation and the pathways linking it to stress damage were unclear.
• What they did: The study used fer loss-of-function mutants with genetic and molecular analyses to link temperature-sensitive defects to jasmonic acid overaccumulation and subsequent reactive oxygen species production.
• The result: FER-mediated regulation of turgor-dependent cell wall tensile stress prevents aberrant jasmonic acid accumulation and oxidative stress, enabling survival under sustained elevated temperatures.

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