A bacterial partner helps plants keep making pollen in heat waves
Fatima A, Shekhawat K, Alidrissi L, Alzayed W, Farooq HU
Climate Adaptation
The tomato or pepper plants that stall out and drop flowers during a summer heat wave may just be missing the right microbial partner in their soil.
When it gets really hot, plants struggle to make healthy pollen, which means fewer fruits and seeds. Researchers discovered that a natural plant hormone called ethylene works together with a specific protein to help plants cope with heat stress, and that a helpful bacterium living in plant roots can turn up this same protective system. It's an early clue that adding the right microbe to soil might help crops keep producing food as summers get hotter.
Key Findings
Plant growth and male reproduction under elevated temperature depend on ethylene-activated REF6, a histone-modifying enzyme
ref6 mutant plants failed to respond to ACC (an ethylene precursor) treatment that normally rescues heat-stressed wild-type plants
The root-associated bacterium Enterobacter sp. SA187 protects plant growth and reproduction under heat stress by activating the same ethylene-REF6 pathway
chevron_right Technical Summary
Scientists found that a friendly soil bacterium can help plants survive extreme heat by boosting a natural gas hormone that protects growth and pollen production, offering a possible microbial fix for climate-stressed crops.
Abstract Preview
Original paper
Ethylene-REF6 regulatory module enables endophyte-mediated thermotolerance of plant growth and reproduction.
Global warming affects plant growth and yield, posing a major threat to global food security. Male sexual reproduction is the most sensitive stage for plant yield under elevated temperature (eT). W...
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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
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