Zhu Meiyan, Ding Yanhua, Li Xuejiao, Xiao Yuqing, Zhao Zhiwei, Li Tao
State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming 650091, China.
School of Life Sciences, Yunnan University, Kunming 650500, China.
Plants (Basel). 2021 Dec 11;10(12):2731. doi: 10.3390/plants10122731.
adopts a tolerant strategy as a metal excluder to survive toxic metal concentrations. Biodiversity and the endophytic fungal community colonizing the roots were assessed from a mining area (MA) and a neighboring non-mining area (nMA) in southwestern China. All roots formed fully developed dark septate endophytes (DSEs) and arbuscular mycorrhizal fungi (AMF). Total DSE colonization was higher for the MA versus nMA, in contrast to the total AMF colonization in the two sites. The DSE colonization was higher than AMF colonization regardless of the site. Pure-culture data showed that the fungi closely related to , and dominantly colonized the roots. A total of 450 operational taxonomic units (OTUs) were identified showing the presence of a distinct fungal community in MA and nMA, which was shaped by soil physiochemical properties, including soil Zn concentrations and organic matter. We found that accumulates and adapts efficiently to local endophytic fungi to achieve the expansion of its community, including the spontaneously reclaimed DSE. This property may be targeted to achieve its colonization with a pioneer plant for phytoremediation in the restoration of a vegetation cover in a metal-contaminated area.
作为一种金属排斥者，采用耐受策略以在有毒金属浓度下生存。对中国西南部一个矿区（MA）和邻近非矿区（nMA）的生物多样性以及定殖于根部的内生真菌群落进行了评估。所有根部均形成了发育完全的暗隔内生菌（DSE）和丛枝菌根真菌（AMF）。与两个地点的总AMF定殖情况相反，MA的总DSE定殖高于nMA。无论哪个地点，DSE定殖均高于AMF定殖。纯培养数据表明，与、和密切相关的真菌主要定殖于根部。共鉴定出450个操作分类单元（OTU），表明MA和nMA中存在独特的真菌群落，其受土壤理化性质影响，包括土壤锌浓度和有机质。我们发现能够有效积累并适应当地内生真菌，以实现其群落的扩展，包括自发恢复的DSE。这一特性可用于在金属污染地区植被恢复的植物修复中，利用先锋植物实现其定殖。
