Department of Plant Biology, University of Torino, and IPP-CNR, Italy.
Curr Opin Plant Biol. 2011 Aug;14(4):451-7. doi: 10.1016/j.pbi.2011.03.014. Epub 2011 Apr 12.
The arbuscular mycorrhizal symbiosis that involves most plants and Glomeromycota fungi is the result of a complex exchange of molecular information, which commences before the partners are in physical contact. On the one hand, plants release soluble factors, including strigolactones that activate both the metabolism and branching of the fungal partners. On the other hand, fungi use compounds that trigger the signaling transduction pathways that are required for the symbiotic modus of plant cells. Here we describe some of the recent discoveries regarding the fungal molecules involved in rhizospheric conversation, and the way in which they are perceived by their hosts. We conclude that similar signaling molecules may have different meanings, depending on the context. However, at the end, specificity must be maintained to ensure appropriate partners enter symbiosis.
丛枝菌根共生，涉及大多数植物和球囊霉真菌，是复杂的分子信息交流的结果，这种交流始于伙伴们尚未物理接触之前。一方面，植物释放可溶性因子，包括激活真菌伙伴代谢和分支的独脚金内酯。另一方面，真菌利用化合物触发信号转导途径，这些途径是植物细胞共生模式所必需的。在这里，我们描述了一些关于参与根际对话的真菌分子的最新发现，以及它们被宿主感知的方式。我们得出的结论是，类似的信号分子可能具有不同的含义，具体取决于上下文。然而，最终，为了确保适当的伙伴进入共生关系，特异性必须得到维持。
