拟南芥
木质素
生物
继电器
伤口愈合
细胞生物学
植物
基因
生物化学
遗传学
量子力学
物理
突变体
功率(物理)
作者
Huimin Xu,Chaoqun Dong,Wei Xing Zheng,Shasha Fu,Arfa Tauqeer,Xinyun Gu,Qianfang Li,Xufang Niu,Peng Liu,Xiaoyue Zhang,Xiaopeng Yu,Meng Li,Shuang Wu
出处
期刊:PubMed
日期:2024-09-10
标识
DOI:10.1016/j.molp.2024.09.003
摘要
Plants are frequently exposed to herbivory and mechanical damage that results in wounding. Two fundamental strategies, regeneration and healing, are employed by plants upon wounding. It is not fully understood how plants make different decisions, and how wound healing is sustained until the damaged tissues recover. In this study, we find that the local auxin accumulation patterns, determined by wounding modes, may activate different recovery programs in wounded tissues. Wounding triggers a transient jasmonic acid (JA) signaling that promotes lignin deposition in the first few hours after wounding occurs. This early response is subsequently relayed to ABA signaling via MYC2. The induced JA signaling promotes ABA biosynthesis to maintain the expression of RAP2.6, a key factor for sustained lignin biosynthesis and the later wound healing process. Our findings provide mechanistic insights into how plants heal from wounding and elucidate the molecular mechanisms underlying the prolonged healing process following wounding.
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