应用生态学报2024，Vol.35Issue(6)：1689-1694,6.DOI:10.13287/j.1001-9332.202406.029
长白山苔原植物深色有隔内生真菌物种多样性
Species diversity of dark septate endophytes in tundra plants of Changbai Mountains,Northeast China
摘要
Abstract
We isolated the dark septate endophytic(DSE)fungi from roots of typical plant species in the tundra of Changbai Mountains Nature Reserve,including Rhododendron aureum,R.conferentiatum,Vaccinium uliginosum,and Dryas octopetala,and studied their colonization.We further investigated the DSE community composition and species diversity of the four tundra plant species by using morphological characteristics combined with rDNA ITS se-quence analysis.The results showed that DSE formed a typical structure of"microsclerotia"in roots of the four plant species.A total of 69 strains of DSE fungi were isolated from the root samples,belonging to 10 genera,and 12 species.They were Phialocephala fortinii,Altemaria alternata,A.tenuissima,Epicocum nigrum,Canariomyces mi-crosporus,Colletotrichum spaethianum,C.camelliae,Leptophoria sp.,Cladosporium cladosporioides,Phoma sp.,Cadophora sp.,and Discosia italica,respectively.The DSE fungal species diversity was rich,and all these fungal species were firstly reported as DSE fungi in the alpine tundra belt of China.Among them,Phialocephala fortinii was the common and dominant species of all tundra plants.The Simpson,Pielou,and Shannon diversity indices of DSE fungi of the four plant species of tundra differed significantly.Our results showed that tundra plants have rich diversity of DSE fungi,and they can form a good symbiotic relationship,which enhance the adaptability of tundra plants to the harsh environment.关键词
深色有隔内生真菌/侵染特征/群落组成/物种多样性Key words
dark septate endophytic fungi/infection characteristics/community composition/species diversity引用本文复制引用
苏丹,孙蕊,许榕凡,张文浩,吕国忠..长白山苔原植物深色有隔内生真菌物种多样性[J].应用生态学报,2024,35(6):1689-1694,6.基金项目
本文由国家自然科学基金项目(3177011075)、中国国家留学基金项目(202008210100)、辽宁省教育厅青年育苗计划项目(2020JYT02)、生物技术与资源利用教育部重点实验室开放课题(KF2021002)、2021年辽宁省教育厅青年扶持项目和辽宁省普通本科高等学校校际合作项目资助. （3177011075）
