柑橘黄龙病病原菌的鉴定及16S rDNA序列分析

孙大光; 郑雪芳; 刘波; 阮传清; 夏育陆; 段永平

柑橘黄龙病病原菌的鉴定及16S rDNA序列分析

1.
福建师范大学生命科学学院,福建福州 350108;
2.
福建省农业科学院柑橘黄龙病研究中心,福建福州 350003;
3.
美国北卡州立大学有害生物综合治理研究中心,北卡罗来纳罗利 27606;
4.
美国农业部佛罗里达园艺实验室,弗罗里达皮尔斯堡 34945

基金项目:

国家公益性行业(农业)科研专项 (201003067-05);中美合作项目柑橘木虱及黄龙病野外研究(2010-1652-02)、抗虫柑橘品种研究(6618-22000-037-01S);福建省财政专项福建省农业科学院科技创新团队建设基金(STIF-Y03)

详细信息

作者简介:
刘波(1957-),男,研究员,博士,研究方向:微生物生物技术与农业生物药物(E-mail:fzliubo@163.com)

中图分类号: Q 931
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出版历程
- 收稿日期: 2011-11-01
- 修回日期: 2011-11-26
- 刊出日期: 2011-12-15

Identification and 16S rDNA Sequence Analysis of Citrus Huanglongbing Pathogen

1.
College of Life Science Fujian Normal University,Fuzhou,Fujian 350108,China;
2.
Citrus Huanglongbing Research Center,Fujian Academy of Agricultural Sciences, Fuzhou,Fujian 350003,China;
3.
The Center of Integrated Pest Management, North Carolina State University,North Carolina 27606,USA;
4.
Horticultural Research Laboratory (USDA/ARS),Florida 34945,USA

摘要

摘要: 采用Nested-PCR技术检测顺昌果园红心柚树中柑橘黄龙病病原的携带情况,通过黄龙病病原菌16S rDNA测序和构建系统发育树比较不同类型柑橘黄龙病原菌之间的进化关系,采用特异引物扩增16S rDNA片段鉴别不同黄龙病病原菌,结合限制性内切酶酶切确定该红心柚园黄龙病病原的类型,并分析不同类型柑橘黄龙病病原16S rDNA序列差异性。结果表明:所取的12株红心柚树叶片样品中有7株树的叶片中检测出黄龙病病原,黄龙病病原的阳性检出率为58.33%,其中4个为显性性状,3个为隐性性状。柑橘黄龙病病原菌16S rDNA进化分析及限制性内切酶XbaI酶切结果表明,顺昌柑橘黄龙病病原菌属于亚洲型。不同类型柑橘黄龙病病原菌16S rDNA的序列差异性分析表明,亚洲种与非洲种的差异性为2.75%,非洲种与美洲种的差异性为3.90%,亚洲种与美洲种的差异性为3.44%。
- 柑橘黄龙病 /
- 鉴定 /
- 16S rDNA /
- 系统进化分析
Abstract: Nested-PCR detection of Shunchang citrus Huanglongbing pathogen was carried out in this study.Phylogenetic tree based on rDNA sequencing was built to find out the evolutionary between different parts citrus HLB pathogens.Digesting the target DNA fragment of 16S rDNA with restriction enzyme XbaI was carried out to confirm the species of Shunchang Huanglongbing pathogen.The results showed that there were 7 positive detections in 12 selected samples, and the rate of positive detections was 58.33%,and four were dominant character,three were recessive character.The results showed that Shunchang citrus Huanglongbing pathogen belong to Candidatus Liberibacter asiaticus based on the 16S rDNA phylogenetic analysis and restriction enzyme XbaI digestion analysis.And 16S rDNA sequence gap analysis showed that the difference between Ca. L.asiaticus and Ca. L.africanus, Ca. L.africanus and Ca.L.americanus, Ca.L.americanus and Ca.L.asiaticus were 2.75%,3.90%, 3.44%, respectively.
- Citrus Huanglongbing /
- Identification /
- 16S rDNA /
- Phylogenetic analysis

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参考文献(7)

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