生于华中五味子上的5种拟盘多毛孢属真菌

Five Pestalotiopsis species associated with Schisandra phenanthera in China

华中五味子Schisandraphenanthera是一种重要的药用植物资源。拟盘多毛孢属Pestalotiopsis真菌种类丰富,分布广泛,是重要的病原菌、内生真菌及腐生菌。本研究采用组织分离法从采集自陕西省安康市宁陕县的华中五味子上分离获得10株拟盘多毛孢属真菌,结合形态学观察与基于ITS、tef1及tub23个位点的多基因序列的分子系统学分析,将这些菌株鉴定为冷杉拟盘多毛孢P.abietis、江西拟盘多毛孢P.jiangxiensis、庐山拟盘多毛孢P.lushanensis、稻拟盘多毛孢P.orzae以及新种五味子拟盘多毛孢P.schisandrae,上述拟盘多毛孢属真菌为华中五味子上首次报道。

Schisandra phenanthera is an important medicinal plant.Numerous species of Pestalotiopsis having wide-ranging distribution are associated with plant hosts as pathogens,endophytes,or saprobes.Ten isolates of Pestalotiopsis were obtained from samples of S.phenanthera collected from Ningshan County,Ankang City,Shaanxi Province through tissue separationmethod.TTaxonomicidi entification wereconducted basedonmorphological characteristics and phylogenetic analyses of multi-gene sequence data from three loci(ITS,tefl,and tub2).These isolates were identified as P.abietis,P.jiangxiensis,P.lushanensis,P.orzae and P.schisandrae sp.nov.The species of Pestalotiopsis are first reported in Schisandra phenanthera.