Plant sexual reproduction in a warming world.

Heat stress can trigger a system-level breakdown of male and female gametophyte development, shared metabolic/proteostatic support, and pollen–pistil interaction within a narrow temperature window.

• Why it matters: Sexual reproduction is the most heat-sensitive plant life-cycle phase, yet prior work on reproductive failure has largely examined individual organs rather than integrated system behavior.
• What they did: The authors lay out a conceptual framework linking gametophyte development, shared metabolic and proteostatic support networks, and pollen–pistil interaction, and discuss epigenetic stress memory.
• The result: The combined collapse is not predictable from single organs or gametophytes, and emerging tools like single-cell omics, AI-driven phenotyping, and genome editing could enable mechanistic insights for breeding heat-resilient crops.

AI summary of the abstract · may contain errors · not medical advice · read the paper.