Eljebbawi Ali, Guerrero Yossmayer Del Carmen Rondón, Dunand Christophe, Estevez José Manuel
Laboratoire de Recherche en Sciences Végétales, CNRS, UPS, Université de Toulouse, 31326 Castanet Tolosan, France.
Fundación Instituto Leloir and IIBBA-CONICET, Av. Patricias Argentinas 435, Buenos Aires, CP C1405BWE, Argentina.
iScience. 2020 Dec 29;24(1):101978. doi: 10.1016/j.isci.2020.101978. eCollection 2021 Jan 22.
Reactive oxygen species (ROS) are naturally produced by several redox reactions during plant regular metabolism such as photosynthesis and respiration. Due to their chemical properties and high reactivity, ROS were initially described as detrimental for cells during oxidative stress. However, they have been further recognized as key players in numerous developmental and physiological processes throughout the plant life cycle. Recent studies report the important role of ROS as growth regulators during plant root developmental processes such as in meristem maintenance, in root elongation, and in lateral root, root hair, endodermis, and vascular tissue differentiation. All involve multifaceted interplays between steady-state levels of ROS with transcriptional regulators, phytohormones, and nutrients. In this review, we attempt to summarize recent findings about how ROS are involved in multiple stages of plant root development during cell proliferation, elongation, and differentiation.
活性氧（ROS）是植物在正常新陈代谢（如光合作用和呼吸作用）过程中通过多种氧化还原反应自然产生的。由于其化学性质和高反应活性，ROS最初被描述为在氧化应激期间对细胞有害。然而，它们已被进一步确认为植物整个生命周期中众多发育和生理过程的关键参与者。最近的研究报道了ROS作为生长调节因子在植物根系发育过程中的重要作用，例如在分生组织维持、根伸长以及侧根、根毛、内皮层和维管组织分化中。所有这些过程都涉及ROS稳态水平与转录调节因子、植物激素和营养物质之间的多方面相互作用。在本综述中，我们试图总结关于ROS如何参与植物根系发育在细胞增殖、伸长和分化的多个阶段的最新发现。
