Oldroyd Giles E D, Downie J Allan
Department of Disease and Stress Biology, John Innes Center, Norwich NR4 7UH, UK.
Annu Rev Plant Biol. 2008;59:519-46. doi: 10.1146/annurev.arplant.59.032607.092839.
The formation of nitrogen-fixing nodules on legumes requires an integration of infection by rhizobia at the root epidermis and the initiation of cell division in the cortex, several cell layers away from the sites of infection. Several recent developments have added to our understanding of the signaling events in the epidermis associated with the perception of rhizobial nodulation factors and the role of plant hormones in the activation of cell division leading to nodule morphogenesis. This review focuses on the tissue-specific nature of the developmental processes associated with nodulation and the mechanisms by which these processes are coordinated during the formation of a nodule.
豆科植物上固氮根瘤的形成需要根瘤菌在根表皮处的侵染与皮层中细胞分裂的启动相结合，而皮层距离侵染部位有几层细胞之远。最近的几项进展增进了我们对表皮中与根瘤菌结瘤因子感知相关的信号事件以及植物激素在激活细胞分裂导致根瘤形态发生中所起作用的理解。本综述聚焦于与结瘤相关的发育过程的组织特异性本质，以及在根瘤形成过程中这些过程是如何协调的机制。
