| 油茶暹罗刺盘孢菌群体遗传结构分析 |
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| 引用本文： | 李 杨,李 河,周国英,蒋越西,蒋仕强,刘君昂.油茶暹罗刺盘孢菌群体遗传结构分析[J].植物保护,2017,43(3):49-54. |
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| 作者姓名： | 李 杨 李 河 周国英 蒋越西 蒋仕强 刘君昂 |
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| 作者单位： | 1. 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;中南林业科技大学,经济林培育与保护省部共建教育部重点实验室,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 |
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| 基金项目： | 国家林业公益性行业科研专项（201304403）；国家自然科学基金（31570641） |
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| 摘 要： | 暹罗刺盘孢菌是油茶炭疽病病原之一,在我国多个油茶产区均有分布。研究油茶暹罗刺盘孢菌群体遗传结构可为全面、有效防治油茶炭疽病害提供理论依据。本研究对分离自海南、江西、湖南、广西4省(自治区)6个地区暹罗刺盘孢菌菌株的ITS、CAL和GAPDH 3个基因的序列进行群体遗传结构分析。根据拼接的上述3个基因的序列,57个暹罗刺盘孢菌菌株可定义为13个单倍型,其中单倍型H7为主要单倍型,分布于本研究所涉及的所有地区。病菌不同地理种群间的遗传分化较大,AMOVA分析显示,遗传变异主要发生在种群内,病菌未经历过大规模的种群扩张。研究结果表明油茶炭疽病原暹罗刺盘孢菌种群具有丰富的遗传多样性。
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| 关 键 词： | 暹罗刺盘孢菌 地理种群 多基因序列 群体遗传结构 |
| 收稿时间： | 2016/3/21 0:00:00 |
| 修稿时间： | 2016/8/25 0:00:00 |
Population genetic structure of Colletotrichum siamense on teaoil trees |
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| Institution: | 1. Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha 410004, China; 2. Key Laboratory of Cultivation and Protection for Nonwood Forest Trees of Ministry of Education,Central South University of Forestry and Technology, Changsha 410004, China |
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| Abstract: | Colletotrichum siamense is one of the primary anthracnose pathogen of Camellia oleifera from most producing areas in China. Population genetic structure is the theoretical basis for effective control of anthracnose. The population genetic structures of 57 C. siamense strains isolated from Hainan, Jiangxi, Hunan, Guangxi of China were analyzed in this study. The 57 ITSCALGAPDH gene sequences of C. siamense could be defined as 13 haplotypes, and the major haplotype H7 was found in all sites. There was large genetic differentiation between different geographical populations. AMOVA analysis showed that the genetic variation mainly occurred within the population, and the pathogen did not experience largescale population expansion. The results indicated that the C. siamense natural populations had rich genetic diversity. |
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| Keywords: | Colletotrichum siamense geographical population multiple gene sequences population genetic structure |
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