PBS1 in heat-immunity crosstalk.
Yang Y, Hou J, Wang Y, Zhang L, He J
Climate Adaptation
Crops bred with this molecular switch tuned up could hold their disease defenses on a scorching July day — instead of dropping them the way most plants do when heat and infection hit at once.
Plants normally struggle to fight off diseases when it gets very hot, because heat and immune responses can interfere with each other. Researchers found a protein sitting on the outer membrane of plant cells that acts like a control switch, turning on protective chemical signals in response to both heat and invading pathogens. Understanding this switch gives plant breeders a concrete target to engineer crops that keep their defenses up even during heat waves.
Key Findings
The PBS1 protein sits at the plasma membrane and serves as an early-response switch linking heat stress and immune signaling in plants.
PBS1 activates reactive oxygen species (chemical signals) that coordinate both heat tolerance and pathogen defense responses simultaneously.
The PBS1 module is identified as a breeding target for developing climate-resilient crops that maintain immunity under high-temperature conditions.
chevron_right Technical Summary
Scientists discovered that a protein called PBS1 acts as a molecular switch at the outer surface of plant cells, helping plants respond to both heat stress and pathogen attack at the same time. This finding could help breeders develop crops that stay healthy as temperatures rise.
Abstract Preview
The BARELY ANY MERISTEM 1-AVRPPHB SUSCEPTIBLE 1 (PBS1) module is an early plasma membrane switch activating reactive oxygen species-dependent heat responses. PBS1 may integrate heat and immunity, o...
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