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棉花学报  2018, Vol. 30 Issue (3): 271-281    DOI: 10.11962/1002-7807.lyczl.20180508
  研究与进展 本期目录 | 过刊浏览 | 高级检索 |
基于rDNA-ITS和组蛋白3基因序列分析鉴定新疆棉花叶斑病病原
李映程1,张国丽2,任毓忠1,李海强3,武刚4,李天义5,李国英1*,张莉1*
1.石河子大学农学院/新疆绿洲农业病虫害治理与植保资源利用自治区高校重点实验室,新疆 石河子 832003;2.新疆农垦科学院生物技术研究所,新疆 石河子 832000;3.新疆农业科学院植物保护研究所,乌鲁木齐 830000;4.新疆生产建设兵团第一师农业科学研究所,新疆 阿拉尔 843300;5.新疆塔里木河种业股份有限公司,新疆 阿拉尔 843300
Identifying the Pathogen of Cotton Leaf Spot Based on the Analysis of rDNA-ITS and Histone 3 Gene Sequence in Xinjiang
Li Yingcheng1, Zhang Guoli2, Ren Yuzhong1, Li Haiqiang3, Wu Gang4, Li Tianyi5, Li Guoying1*, Zhang Li1*
李国英(1941―),男,教授,lgy-agr@shzu.edu.cn;张莉(1970―),女,教授,博士,1602784618@qq.com
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摘要 【目的】明确新疆棉花叶斑病的病原种类。【方法】2016年和2017年在南疆、北疆7个地区30个植棉单位采集典型叶斑病样206份,采用常规组织分离法分离并纯化,依据采样时间、采样地点和菌落特征,在南疆、北疆分苗期和生长后期各选取10个代表性菌株,根据其形态特征,结合rDNA内转录间隔区(Internal transcribed spacer,ITS)和组蛋白3基因序列分析,对病原进行鉴定。【结果】北疆苗期(5―6月)棉花叶斑病病原以Alternaria alternata为主,A. tenuissima次之;生长后期(8―9月)棉花叶斑病病原以A. tenuissima为主,A. alternata次之,也分离到A. macrospora。南疆棉花苗期叶斑病病原为A. tenuissima;生长后期棉花叶斑病病原为A. tenuissimaA. macrospora。其中从陆地棉上分离的以A. tenuissima为主,从海岛棉上分离的以A. macrospora为主。【结论】新疆棉花叶斑病病原主要有3种,即A. alternataA. tenuissimaA. macrospora
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李映程
张国丽
任毓忠
李海强
武刚
李天义
李国英
张莉
关键词 棉花叶斑病病原Alternaria spp.内转录间隔区    
Abstract:[Objective] The objective of this experiment is to identify pathogens causing cotton leaf spot in Xinjiang. [Method] Two hundred and six leaf samples displaying typical leaf spot symptoms were collected from 30 loci in 7 different regions of Xinjiang in 2016 and 2017. The fungal isolates were purified using conventional methods. Ten representative fungal strains were selected for further tests based on different sampling times, locations, and colony characteristics. The strains were identified based on their morphological characteristics and the sequence analysis of both rDNA internal transcribed spacer and histone 3 gene. [Result] In north of Xinjiang, Alternaria alternata and A. tenuissima were the dominant pathogens at the seedling stage (from May to June), whereas in August and September, A. tenuissima was the main pathogen and few were A. alternata and A. macrospora. In south of Xinjiang, A. tenuissima was the main pathogen at the seedling stage, whereas in August and September, A. tenuissima and A. macrospora dominated. Further, Gossypium hirsutum and G. barbadense was mainly infected with A. tenuissima and A. macrospora, respectively. [Conclusion] The main pathogens causing cotton leaf spot in Xinjiang are A. alternata, A. tenuissima and A. macrospora.
Key wordscotton leaf spot    pathogen    Alternaria spp    internal transcribed spacer
收稿日期: 2018-01-22      出版日期: 2018-06-08
中图分类号:  S435.621  
基金资助:科技部中小企业创新项目(14C26216513812)
作者简介: 李映程(1994―),男,硕士,1363731850@qq.com
引用本文:   
李映程,张国丽,任毓忠, 等. 基于rDNA-ITS和组蛋白3基因序列分析鉴定新疆棉花叶斑病病原[J]. 棉花学报, 2018, 30(3): 271-281.
$author.xingMing_EN,$author.xingMing_EN,$author.xingMing_EN, et al. Identifying the Pathogen of Cotton Leaf Spot Based on the Analysis of rDNA-ITS and Histone 3 Gene Sequence in Xinjiang[J]. Cotton Science, 2018, 30(3): 271-281.
链接本文:  
http://journal.cricaas.com.cn/Jweb_mhxb/CN/Y2018/V30/I3/271
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