Diversity and characterization of Cd-tolerant dark septate endophytes (DSEs) associated with the roots of Nepal alder (Alnus nepalensis) in a metal mine tailing of southwest China

doi:10.1016/j.apsoil.2015.03.013

	Diversity and characterization of Cd-tolerant dark septate endophytes (DSEs) associated with the roots of Nepal alder (Alnus nepalensis) in a metal mine tailing of southwest China
	Xu,Runbing; Li,Tao; Cui,Hongliang; Wang,Junling; Yu,Xin; Ding,Yanhua; Wang,Chaojun; Yang,Zhuliang; Zhao,Zhiwei; Zhao,ZW (reprint author),Yunnan Univ,Minist Educ,Lab Conservat & Utilizat Bioresources,Key Lab Microbial Div Southwest China,Kunming 650091,Peoples R China.; zhaozhw@ynu.edu.cn
	2015-09-01
发表期刊	APPLIED SOIL ECOLOGY
卷号	93 页码:11-18
摘要	Nepal alder (Alnus nepalensis), being an ideal and fast-growing pioneer species to accelerate ecological restoration of the degraded habitats in eastern Himalayas, have received extensive attention. In the present study, colonization characteristics, diversity and cadmium tolerance of dark septate endophytes (DSEs) colonizing the roots of Nepal alders were assessed along environmental gradients in a Pb, Zn, and Cd mine tailing, southwestern China. All Nepal alder roots surveyed were conspicuously colonized by DSEs with 23.1-35.8% colonization intensity. In total, 72 culturable strains of melanized root-associated fungi were isolated from the 45 root samples. Most strains were closely related to well-known DSE fungi, such as fungi belonging to the genera Phialophora, Leptodontidium, Cladosporium, and Exophiala. DSEs from heavily metal-polluted sites showed a higher Cd2+ tolerance in vitro than those from the slightly polluted plots. These findings stressed that DSE was an integral component of the root system of Nepal alder growing in metal-contaminated soils, and it is more feasible to obtain heavy metal (HM) tolerant DSEs from mining areas than from no HM-polluted environments for their potential application in phytoremediation. We concluded with a discussion of further research for addressing the unresolved roles of DSEs in A. nepalensis restoration during the early stage of plant establishment in the freshly metal-exposed mining soils. (C) 2015 Elsevier B.V. All rights reserved.
关键词	Dark Septate Endophyte (Dse) Diversity Cd Tolerance Alnus Nepalensis
学科领域	Soil Science
DOI	10.1016/j.apsoil.2015.03.013
收录类别	SCI
语种	英语
WOS记录号	WOS:000354785300002
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/21150
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Zhao,ZW (reprint author),Yunnan Univ,Minist Educ,Lab Conservat & Utilizat Bioresources,Key Lab Microbial Div Southwest China,Kunming 650091,Peoples R China.; zhaozhw@ynu.edu.cn
推荐引用方式 GB/T 7714	Xu,Runbing,Li,Tao,Cui,Hongliang,et al. Diversity and characterization of Cd-tolerant dark septate endophytes (DSEs) associated with the roots of Nepal alder (Alnus nepalensis) in a metal mine tailing of southwest China[J]. APPLIED SOIL ECOLOGY,2015,93:11-18.
APA	Xu,Runbing.,Li,Tao.,Cui,Hongliang.,Wang,Junling.,Yu,Xin.,...&zhaozhw@ynu.edu.cn.(2015).Diversity and characterization of Cd-tolerant dark septate endophytes (DSEs) associated with the roots of Nepal alder (Alnus nepalensis) in a metal mine tailing of southwest China.APPLIED SOIL ECOLOGY,93,11-18.
MLA	Xu,Runbing,et al."Diversity and characterization of Cd-tolerant dark septate endophytes (DSEs) associated with the roots of Nepal alder (Alnus nepalensis) in a metal mine tailing of southwest China".APPLIED SOIL ECOLOGY 93(2015):11-18.

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