Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark.
Plant Commun. 2020 Aug 21;1(5):100104. doi: 10.1016/j.xplc.2020.100104. eCollection 2020 Sep 14.
The establishment of symbiotic nitrogen fixation requires the coordination of both nodule development and infection events. Despite the evolution of a variety of anatomical structures, nodule organs serve a common purpose in establishing a localized area that facilitates efficient nitrogen fixation. As in all plant developmental processes, the establishment of a new nodule organ is regulated by plant hormones. During nodule initiation, regulation of plant hormone signaling is one of the major targets of symbiotic signaling. We review the role of major developmental hormones in the initiation of the nodule organ and argue that the manipulation of plant hormones is a key requirement for engineering nitrogen fixation in non-legumes as the basis for improved food security and sustainability.
共生固氮的建立需要协调根瘤发育和侵染事件。尽管进化出了各种解剖结构，但根瘤器官都具有一个共同的目的，即建立一个有利于高效固氮的局部区域。与所有植物发育过程一样，新根瘤器官的建立受植物激素的调节。在根瘤起始过程中，植物激素信号转导的调控是共生信号的主要目标之一。我们综述了主要发育激素在根瘤器官起始中的作用，并认为植物激素的操纵是在非豆科植物中进行固氮工程的关键要求，这是提高粮食安全和可持续性的基础。
