The genus Diplodia(Botryosphaeriales,Botryosphaeriaceae)comprises many important pathogens or latent pathogens associated with stem canker,shoot blights and die-back of plants across a wide geographic distribution.In this study,a total of 13 Diplodia isolates was obtained from diseased branches of loquat(Eriobotrya j aponica)trees in Yunnan Province.Based on phylogenetic analyses of ITS,tef1 and tub2 loci,combined with morphological characteristics,two species were identified,D.mutila new to China and D.pipa sp.nov.The pathogenicity tests conducted on potted loquat trees demonstrated that both species can infect loquat trees,with D.mutila exhibiting a higher level of virulence as compared with D.pipa.To our knowledge,this is the first report of Diplodia from loquat trees in China.
关键词
葡萄座腔菌科/真菌分类/植物病原菌/致病性/果树/新种
Key words
Botryosphaeriaceae/taxonomy/plant pathogen/pathogenicity/fruit tree/new species
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