Ophiostomatales (Ascomycota) associated with Tomicus species in southwestern China with an emphasis on Ophiostoma canum  

作　　者：Yue Pan Jun Lu Peng Chen Zefen Yu Huihong Zhang Hui Ye Tao Zhao 

机构地区：[1]Eco-development Academy,Southwest Forestry University,Kunming 650224,People’s Republic of China [2]Laboratory of Biological Invasion and Ecosecurity,Yunnan University,Kunming 650091,People’s Republic of China [3]Yunnan Academy of Forestry and Grassland,Kunming 650201,People’s Republic of China [4]Laboratory for Conservation and Utilization of Bio-resources,Key Laboratory Resources of the Ministry of Education,Yunnan University,Kunming 650091,People’s Republic of China [5]Department of Science and Technology,Orebro University,70182 Orebro,Sweden

出　　处：《Journal of Forestry Research》2020年第6期2549-2562,共14页林业研究（英文版）

摘　　要：Ophiostomatalean fungi may facilitate bark beetle colonization and reproduction.In the present study of the fungal community associated with bark beetle species belonging to Tomicus in Yunnan,China,six ophiostomatalean fungi(Ophiostoma canum,O.ips,O.tingens,Leptographium yunnanense,Leptographium sp.1 and Leptographium sp.2)were isolated from the beetles or their galleries;O.canum was the most common fungal species.The distribution of O.canum was associated with stands heavily damaged by Tomicus species and a higher percentage of valid galleries of Tomicus yunnanensis and T.minor in Yunnan pine(Pinus yunnanensis).After inoculation of Yunnan pine with the fungus,a phloem reaction zone formed and monoterpenes accumulated in the phloem.These results suggested that O.canum was pathogenic to Yunnan pine and that the wide distribution of the fungus might be benefi cial to reproduction of pine shoot beetles in Yunnan pine.However,because the reaction zone and monoterpene accumulation were mild,fungal damage of Yunnan pine might be limited.A more integrated study considering all the fungal species should be done to better understand the interactions among bark beetles,blue-stain fungi,and the tree hosts in the region.

关 键 词：Ophiostomatalean fungi Fungal isolation and identifi cation Ophiostoma canum Pinus yunnanensis Pathogenicity test 

分 类 号：Q938[生物学—微生物学]