Arbuscular mycorrhizal fungi reveal distinct patterns of anastomosis formation and hyphal healing mechanisms between different phylogenic groups
Arbuscular mycorrhizal fungi reveal distinct patterns of anastomosis formation and hyphal healing mechanisms between different phylogenic groups
复制标题
DOI：
10.1111/j.1469-8137.2004.01236.x
复制
发表时间：
2005-01-01
期刊：
影响因子：
9.4
通讯作者：
Declerck, S
中科院分区：
文献类型：
--
作者：
de la Providencia, IE;de Souza, FA;Declerck, S
丛枝菌根（AM）真菌菌丝网络的功能性和完整性的菌丝愈合机制（HHM）和融合形成的重要性仍然缺乏文献记载。使用网格线的方法进行评估，而HHM的时间推移monitored.In完整的菌丝网络，每菌丝长度的吻合数是较高的球囊霉科比巨孢菌科菌株。球囊霉科菌株研究总是形成不同的菌丝之间的吻合，而在巨孢霉科的吻合往往涉及同一菌丝内的菌丝桥。在这两个家庭的HHM对应于一个四步的过程;第一隔膜形成;第二开始生长菌丝尖端（GHTs）;第三GHT伸长，定向和接触;和第四GHT融合和细胞质/原生质流重建。球囊霉科与巨孢霉科在菌丝长度上的吻合类型、数目和HHM值上存在较大差异，这是区别这两个科的一个补充特征，对AM真菌的生态学研究具有重要意义。
The significance of anastomosis formation and the hyphal healing mechanism (HHM) for functionality and integrity of the arbuscular mycorrhizal (AM) fungal mycelial network remains poorly documented.Four Glomeraceae and three Gigasporaceae were cultured monoxenically. Anastomosis formation was assessed using the grid line method, while HHM was time-lapse monitored.In intact mycelial networks, the number of anastomosis per hyphal length was higher for Glomeraceae than for Gigasporaceae strains. Glomeraceae strains studied always formed anastomosis between different hyphae, whereas anastomosis in the Gigasporaceae more often concerned hyphal bridges within the same hyphae. In both families the HHM corresponded to a four-step process; first septum formation; second initiation of growing hyphal tips (GHTs); third GHT elongation, orientation and contact; and fourth GHT fusion and cytoplasmic/protoplasmic flux re-establishment. These four steps differentiated Glomeraceae from Gigasporaceae.The type and number of anastomosis per hyphal length, and the HHM differed considerably between Glomeraceae and Gigasporaceae families representing a supplementary character that distinguishes these two families and may be of significance in ecological studies of AM fungi.