Wang Qiqi, Wang Chong, Wei Yumei, Yao Weiqin, Lei Yonghui, Sun Yanfei
College of Life Sciences/Xinjiang Production and Construction Corps Key Laboratory of Oasis Town and Mountain-Basin System Ecology, Shihezi University, Shihezi, China.
Ürümqi Customs Technique Center, Ürümqi, China.
Front Microbiol. 2022 May 20;13:893370. doi: 10.3389/fmicb.2022.893370. eCollection 2022.
Fairy ring is a natural phenomenon in which fungal fruiting bodies occur as a ring on a spot. This ring is produced due to spore ejection by Basidiomycetous fungi and forms a lush growing plant belt. However, the drivers for such formations and the potential plant growth-promoting rhizobacteria in fairy ring soils remain unknown. Fairy rings formed by were selected in this study. Soil characteristics and microbial (bacteria and fungi) community structures between beneath and outside the fairy rings were compared through high-throughput sequencing. Beneficial bacterial resources were excavated using dependent culturable methods. Soil electrical conductivity and available potassium were higher in the soil beneath the ring than outside it. These parameters were positively correlated with the dominant microbial community, but microbial diversity was lower. In the soil beneath the fairy ring, Bacteroidetes and Basidiomycota were more abundant, whereas Verrucomicrobia was less prevalent. (strain BG-5) was isolated from the soil beneath the ring. Strain BG-5 can solubilize phosphorus and produce indole-3-acetic acid, NH , and siderophores. Furthermore, strain BG-5 enhanced salt tolerance and promoted the growth of , wheat (), and cotton () seedlings. This study indicated the presence of abundant beneficial microbes driving the flourishing growth of plants in the fairy ring soil and provided bio-resources for agricultural growth-promoting agents.
蘑菇圈是一种自然现象，其中真菌子实体在某一地点呈环状出现。这个环是由担子菌真菌弹射孢子形成的，并形成一条生长茂盛的植物带。然而，这种形成的驱动因素以及蘑菇圈土壤中潜在的促进植物生长的根际细菌仍然未知。本研究选择了由[未提及具体真菌名称]形成的蘑菇圈。通过高通量测序比较了蘑菇圈下方和外侧土壤的特性以及微生物（细菌和真菌）群落结构。采用依赖可培养的方法挖掘有益细菌资源。环下土壤的电导率和速效钾含量高于环外。这些参数与优势微生物群落呈正相关，但微生物多样性较低。在蘑菇圈下方的土壤中，拟杆菌门和担子菌门更为丰富，而疣微菌门则不太普遍。[未提及具体细菌名称]（菌株BG - 5）从环下土壤中分离出来。菌株BG - 5能够溶解磷并产生吲哚 - 3 - 乙酸、NH[未提及具体物质]和铁载体。此外，菌株BG - 5增强了耐盐性并促进了[未提及具体植物名称]、小麦（[未提及具体品种]）和棉花（[未提及具体品种]）幼苗的生长。本研究表明蘑菇圈土壤中存在丰富的有益微生物推动植物茁壮成长，并为促进农业生长的制剂提供了生物资源。
