PubMed · 2026-04-17
A large-scale review found that plants use predictable, shared strategies to reshape their cell membranes when temperatures spike or plunge — insights that could help scientists breed crops better equipped to survive climate extremes.
Under heat stress, plants consistently reduce membrane-destabilizing lipids (like MGDG and PE) and store highly unsaturated fatty acids in neutral fat droplets (triglycerides) to prevent membranes from becoming dangerously fluid.
Very long-chain fatty acids emerged as a previously underappreciated heat-stress tool, likely acting as structural reinforcement to maintain membrane integrity at high temperatures.
Under cold stress, plants universally increase polyunsaturated lipids in membranes and shift the balance toward bilayer-forming fats (DGDG up, MGDG down) to keep membranes flexible and functional.