State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen (Zhongshan) University (East Campus), Guangzhou, China.
Plant Signal Behav. 2011 Mar;6(3):372-7. doi: 10.4161/psb.6.3.13881. Epub 2011 Mar 1.
Legumes enter nodule symbioses with nitrogen-fixing bacteria (rhizobia), whereas most flowering plants establish symbiotic associations with arbuscular mycorrhizal (AM) fungi. Once first steps of symbiosis are initiated, nodule formation and mycorrhization in legumes is negatively controlled by a shoot-derived inhibitor (SDI), a phenomenon termed autoregulation. According to current views, autoregulation of nodulation and mycorrhization in legumes is regulated in a similar way. CLE peptides induced in response to rhizobial nodulation signals (Nod factors) have been proposed to represent the ascending long-distance signals to the shoot. Although not proven yet, these CLE peptides are likely perceived by leucine-rich repeat (LRR) autoregulation receptor kinases in the shoot. Autoregulation of mycorrhization in non-legumes is reminiscent to the phenomenon of "systemic acquired resistance" in plant-pathogen interactions.
豆科植物与固氮细菌（根瘤菌）形成共生结瘤，而大多数开花植物与丛枝菌根（AM）真菌建立共生关系。一旦共生的第一步开始，豆科植物的结瘤和菌根形成就会被来自地上部分的抑制剂（SDI）负调控，这一现象被称为自调控。根据目前的观点，豆科植物的结瘤和菌根自调控以相似的方式进行调节。响应根瘤菌结瘤信号（结瘤因子）而诱导的 CLE 肽被提议代表向地上部分的上升长距离信号。尽管尚未得到证实，但这些 CLE 肽可能被地上部分富含亮氨酸重复（LRR）的自调控受体激酶感知。非豆科植物的菌根自调控类似于植物-病原体相互作用中的“系统获得抗性”现象。
