Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (EEZ), CSIC, Granada, Spain.
Plant Signal Behav. 2022 Dec 31;17(1):2031504. doi: 10.1080/15592324.2022.2031504. Epub 2022 Feb 1.
For the establishment of the Arbuscular Mycorrhiza (AM) symbiosis it is essential that epidermis and cortical cells from plant roots suffer a strong reorganization to allow the penetration of intracellular fungal hyphae. In the same manner, the new formation of a periarbuscular membrane and a symbiotic interface with specific compositions are required for a functional symbiosis. It is believed that the cytoskeleton of the plant host plays an essential role in these processes, particularly the microtubule (MT) cytoskeleton, as huge modifications have been observed in the MT array of root cells accompanying the establishment of the AM symbiosis. Recent research has established a link between microtubule rearrangements and arbuscule functioning. However, further research is required to elucidate the specific functions of MT cytoskeleton along the different stages of the arbuscule life cycle and to unravel the signals triggering these changes.
为了建立丛枝菌根（AM）共生关系，植物根表皮和皮层细胞必须经历强烈的重组，以允许细胞内真菌菌丝的穿透。同样地，为了功能性共生关系的形成，需要形成一个新的丛枝内泡膜和一个具有特定组成的共生界面。人们认为植物宿主的细胞骨架在这些过程中起着至关重要的作用，特别是微管（MT）细胞骨架，因为在丛枝菌根共生关系建立的同时，观察到根细胞的 MT 排列发生了巨大的改变。最近的研究已经建立了微管重排与丛枝功能之间的联系。然而，需要进一步的研究来阐明 MT 细胞骨架在丛枝生命周期的不同阶段的具体功能，并揭示触发这些变化的信号。
