Zhang Guifang, Liu Wu, Gu Zewei, Wu Shasha, E Yilan, Zhou Wenkun, Lin Jinxing, Xu Lin
National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China.
Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China.
J Exp Bot. 2023 Feb 13;74(4):1198-1206. doi: 10.1093/jxb/erab508.
Plants have remarkable abilities to regenerate in response to wounding. How wounding triggers rapid signal transduction to induce a cellular response is a key topic for understanding the molecular mechanism of plant regeneration. An increasing body of evidence indicates that jasmonate, a hormone that is produced rapidly in response to wounding, plays multiple roles in different plant regeneration processes. In this review, we summarize recent advances on the roles of jasmonate in tissue repair, the formation of wound-induced callus, de novo organ regeneration, and somatic embryogenesis. Physiological and molecular analyses indicate that jasmonate can regulate stem cell activities, cell proliferation, cell fate transition, and auxin production, thereby contributing to plant regeneration. In addition, jasmonate is strictly controlled in plant cells via restriction of the jasmonate concentration and its signalling pathway in a spatial and temporal manner during regeneration. Overall, jasmonate acts as the hormone linking wounding to distinct types of regeneration in plants.
植物具有因受伤而再生的显著能力。伤口如何触发快速信号转导以诱导细胞反应是理解植物再生分子机制的关键课题。越来越多的证据表明，茉莉酸（一种受伤后迅速产生的激素）在不同的植物再生过程中发挥多种作用。在本综述中，我们总结了茉莉酸在组织修复、伤口诱导愈伤组织形成、从头器官再生和体细胞胚胎发生中的作用的最新进展。生理和分子分析表明，茉莉酸可以调节干细胞活性、细胞增殖、细胞命运转变和生长素产生，从而促进植物再生。此外，在再生过程中，植物细胞通过在空间和时间上限制茉莉酸浓度及其信号通路，对茉莉酸进行严格调控。总体而言，茉莉酸作为一种激素，将受伤与植物不同类型的再生联系起来。
