生物技术通报 ›› 2016, Vol. 32 ›› Issue (6): 96-102.doi: 10.13560/j.cnki.biotech.bull.1985.2016.06.014

• 研究报告 • 上一篇    下一篇

油茶新炭疽病原Colletotrichum camelliae鉴定及致病性测定

李杨1,2, 李河1,2, 周国英1,2, 刘君昂1,2   

  1. 1. 中南林业科技大学 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 森林有害生物防控湖南省重点实验室,长沙 410004
  • 收稿日期:2015-07-22 出版日期:2016-06-27 发布日期:2016-06-28
  • 作者简介:李杨,男,硕士研究生,研究方向:植物病原微生物;E-mail:liyangcsuft@163.com
  • 基金资助:
    国家自然科学基金项目(31170598)

Identification of a New Anthracnose Pathogen Colletotrichum camelliae and Its Pathogenicity Test on Camellia oleifera

LI Yang1,2, LI He1,2, ZHOU Guo-ying1,2, LIU Jun-ang1,2   

  1. 1. Key Laboratory for Non-wood Forest of Cultivation and Conservation of Ministry of Education, Central South University of Forestry and Technology,Changsha 410004
    2. Hunan Key Laboratory of Forest Protection,Central South University of Forestry and Technology,Changsha 410004
  • Received:2015-07-22 Published:2016-06-27 Online:2016-06-28

摘要: 油茶炭疽病菌能够侵染油茶叶片、花及果实,造成严重落叶、落果,该病害是我国油茶最重要的病害之一。对采集于湖南、江西及海南的油茶炭疽病的病原菌进行了形态学观察及多基因序列分析,同时对分离到的病原菌进行不同品种油茶致病性测定,结果表明,分离到的5株病原菌为山茶刺盘孢Colletotrichum camelliae,这是国内首次在油茶上发现该病原菌。经C. camelliae对不同油茶品种致病性测定,发现C. camelliae对湘林1号、湘林69号、湘林89号、赣无1、赣无16、广西红花、长林3号、长林4号、长林23号、长林53号、长林148号、长林190号等品种的叶片致病,但是在不同品种叶片上出现症状的时间不同。

关键词: 油茶, 山茶刺盘孢, 炭疽病, 多基因序列, 致病性

Abstract: Anthracnose is one of the most critical diseases of Camellia oleifera in China because it infects the leaves,flowers and fruits of C. oleifera,leading to severe defoliation and pre-mature drop of fruits. Pathogens from anthracnose-diseased C. oleifera leaves collected in Hunan,Jiangxi and Hainan provinces were identified based on morphological observation and multiple-gene sequences,and pathogenicity test was conducted on various cultivars of C. oleifera. The results revealed that isolated pathogens were Colletotrichum camelliae,which is the first report on this pathogen in China. Pathogenicity tests on various cultivars showed that C. camelliae infected the leaves of different C. oleifera cultivars,such as Xianglin-1,Xianglin-69,Xianglin-89,Ganwu-1,Ganwu-16,Guangxi red flower,Changlin-3,Changlin-4,Changlin-23,Changlin-53,Changlin-148,and Changlin-190,however,spot appearances were different on the leaves of different C. oleifera cultivars.

Key words: Camellia oleifera, Colletotrichum camelliae, anthracnose, multiple-gene sequences, pathogenicity