Submergence limits plants’ access to oxygen and light, causing massive changes in metabolism; after submergence, plants experience additional stresses, including reoxygenation, dehydration, photoinhibition, and accelerated senescence. Plant responses to waterlogging and partial or complete submergence, have been well studied, but our understanding of plant responses during post-submergence recovery remains limited. During post-submergence recovery, whether a plant can repair the damage caused by submergence and re-oxygenation and re-activate key processes to continue to grow, determines whether the plant survives. Here, we summarize the challenges plants face when recovering from submergence, primarily focusing on studies of Arabidopsis thaliana and rice (Oryza sativa). We also highlight recent progress in elucidating the interplay among various regulatory pathways, compare post-hypoxia reoxygenation between plants and animals, and provide new perspectives for future studies.

水淹限制了植物对于氧气和光照的获取，导致代谢上的剧烈改变；水淹过后，植物还会经历额外的胁迫，包括再氧合、脱水、光抑制和衰老加速。有关于植物响应于涝害和部分或者全部淹害已经有了充分的研究，但是目前对于植物在水淹过后的恢复研究还比较少。在水淹后的恢复阶段，植物能否修复水淹和再氧合造成的损伤，并重新激活关键生物学进程得以继续生长，这直接决定了植物能否继续存活。本文中，作者总结了植物在水淹后恢复阶段所面临的一系列挑战，主要聚焦于拟南芥和水稻中的相关研究进展。作者重点突出了不同调节途径之间的相互作用，并比较了植物和动物在缺氧后再氧合的最新研究进展，为将来进一步的探索提供了新的视野。

** 肖 仕 **