新疆不同地区野杏内生真菌群落的多样性OA

The community structure and distribution patterns of endophytic fungi in wild apricot(Prunus armeniaca),an endemic species exclusively distributed in Xinjiang Uygur Autonomous Region,northwestern China was investigated.During 2023-2024,healthy plant tissues(leaves,buds,branches,bark)were collected from Turgun Town of Xinyuan County,Xinyuan County Botanical Garden,Fushou Mountain of Huocheng County,and Liuhuanggou of Changji Hui Autonomous Prefecture.Endophytic fungi were isolated using tissue culture methods and identified through morphological analysis and ITS sequencing.The obtained 2 749 isolates were classified into 6 classes,20 orders,38 families,and 64 genera,with Dothideomycetes dominating at the class level(isolation frequency,IF=88.7%),Pleosporales at the ordinal level(IF=83.41%),Dothideaceae at the family level(69.33%),and Alternaria at the generic level(IF=67.01%).Ten genera were common to all sampling sites,while endemic genera numbered 8 in Turgun,14 in Botanical Garden,12 in Fushou Mountain,and 6 in Liuhuanggou.α-Diversity was the highest in Turgun(Shannon H′=1.206±0.111 9;Simpson D=0.531±0.050)and lowest in Liuhuanggou(H′=0.983±0.128;D=0.468±0.055).β-Diversity analysis revealed the most significant community divergence between Liuhuanggou and Turgun(Bray-Curtis P=0.006 4).These results demonstrate rich taxonomic diversity(64 genera)and distinct regional variations in community composition,relative abundance,and dominant taxa among wild apricot endophytes in Xinjiang.