Growth and decline of arboreal fungi that prey on Bursaphelenchus xylophilus and their predation rate  

作　　者：Haixiao Zhang Zhiyan Wei Xuefeng Liu Jie Zhang Guiping Diao 

机构地区：[1]Heilongjiang Province Key Laboratory of Forest Protection,College of Forestry,Northeast Forestry University,Harbin 150040,People’s Republic of China [2]Key Laboratory of Saline-Alkali Vegetation Ecology Restoration,Ministry of Education,College of Life Sciences,Northeast Forestry University,Hexing Road 26,Xiangfang District,Harbin 150040,People’s Republic of China

出　　处：《Journal of Forestry Research》2022年第2期699-709,共11页林业研究（英文版）

基　　金：The work was supported by the Fundamental Research Funds for the Central University(No.2572020DY11).

摘　　要：Pine wilt disease caused by pine wood nema-todes is a deadly disease of the genus Pinus requiring strong quarantine measures.Since its discovery,it has been widely distributed throughout the world.China is one of the coun-tries with a severe rate of infections due to its abundant pine resources.In this study,nematode-trapping fungi were collected from pine trees in Ninghai City,Zhejiang Prov-ince,which is the key area of pine wilt control in Febru-ary,May,September,October and November.The results showed that nematode-trapping fungi of pine are abundant,especially the number and species detected in each month and are quite different;species of fungi in July,Septem-ber and November were more numerous and had higher separation rates.The dominant species in November was Arthrobotrys oligospora followed by Arthrobotrys cladodes;July and September it was A.cladodes.In each part of the tree,A.cladodes was the most widely distributed with a high separation rate.Therefore,it is the dominant fungal species in the area.Arboreal Bursaphelenchus xylophilus-trapping fungi are dependent on pine wood nematodes,and none were isolated from healthy pine trees.More arboreal B.xylophilus-trapping fungi were found under the bark than in the xylem.There is a close relationship between arboreal B.xylophilus-trapping fungi and pine wood nematodes.How to make use of these resources to reduce the damage of pine wood nematode fusarium is the focus of future research.

关 键 词：Arboreal Bursaphelenchus xylophilus-trapping fungi Distribution Dominant species Culture conditions Rate of predation 

分 类 号：S763.18[农业科学—森林保护学]