海南省不同寄主植物炭疽病菌侵染油茶研究  

The initial inoculum source of oil tea anthracnose in Hainan Province

作　　者：李河[1,2] 李杨[1,2] 蒋仕强 万智[1] 李航宇[1] 徐建平[1,2] 周国英[1,2] 

机构地区：[1]中南林业科技大学林学院,经济林培育与保护教育部重点实验室,长沙410004 [2]中南林业科技大学林学院,森林有害生物防控湖南省重点实验室,长沙410004

出　　处：《植物保护》2016年第4期64-70,共7页Plant Protection

基　　金：国家自然科学基金(31570641,31100479)

摘　　要：为了明确海南省不同寄主植物炭疽病菌侵染油茶的潜力,本研究分离、鉴定海南省4个油茶林中不同寄主植物的炭疽病菌种类及其致病性。结果从油茶、葛根、山麻杆、飞机草、蒲葵、鲫鱼胆、桃花心木、黄兰、羊蹄甲、山矾、银柴、降香黄檀和檀香等13种植物上,共获得135株炭疽病菌,其中果生刺盘孢菌(Colletotrichum fructicola)85株、暹罗刺盘孢菌(C.siamense)45株,盘长孢状刺盘孢菌(C.gloeosporioides)3株,君子兰刺盘孢(C.cliviae)和山茶刺盘孢(C.camelliae)各1株;4个采样地的油茶树与葛根等当地其他12种植物具有相同的炭疽病菌C.fructicola和C.siamense,这两种菌占总分离炭疽菌的96%;通过致病性测定,不同寄主来源的这5种炭疽菌均能引起油茶炭疽病。海南省当地多种植物的炭疽病菌是油茶的潜在侵染源。The objective of this study is to clarify the initial inoculum plant source of oil tea anthracnose in Hainan Province. Isolation and identification, artificial infection tests were used for analyzing the pathogens causing oil tea anthracnose in four tea-oil plantations in Hainan. A total of 135 strains of anthracnose pathogen were isolated from the host plants Camellia oleifera, Puerariae radix, Alehornea davidii, Eupatorium odoratum, Livistona chinensis , Maesa perlarius , Khaya senegalensis , Michelia champaca , Bauhinia purpurea , Symplocos sumuntia , Aporosa chinensis, Dalbergia odorifera and Santalum album, including C. fructicola （85 isolates）, C. siamense （45 isolates）, C. gloeosporioides （3 isolates）, C. cliviae （1 isolate） and C. camelliae （1 isolate）. C. fructicola and C. siamense were shared by the oil tea and other 12 plants in the four sampling sites, and the two species accounted for 96% of total isolates. Pathogenicity tests showed that the five Colletotrichum species isolated from different host plants could infect oil tea leaves. The anthracnose pathogens of many other plants were the potential infection sources of the oil tea in Hainan Province.

关 键 词：油茶 炭疽病菌 致病性 

分 类 号：S435.659[农业科学—农业昆虫与害虫防治]