[1]曾丹丹,戎振洋,袁咏天,等.LAMP快速诊断由拟轮枝镰孢引起的水稻恶苗病[J].南京农业大学学报,2018,41(2):286-292.[doi:10.7685/jnau.201705023]
 ZENG Dandan,RONG Zhenyang,YUAN Yongtian,et al.Rapid diagnosis of rice bakanae disease caused by Fusarium verticillioides using a loop-mediated isothermal amplification assay[J].Journal of Nanjing Agricultural University,2018,41(2):286-292.[doi:10.7685/jnau.201705023]
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LAMP快速诊断由拟轮枝镰孢引起的水稻恶苗病()
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《南京农业大学学报》[ISSN:1000-2030/CN:32-1148/S]

卷:
41卷
期数:
2018年2期
页码:
286-292
栏目:
出版日期:
2018-03-27

文章信息/Info

Title:
Rapid diagnosis of rice bakanae disease caused by Fusarium verticillioides using a loop-mediated isothermal amplification assay
作者:
曾丹丹 戎振洋 袁咏天 王晓莉 郑小波
南京农业大学植物保护学院, 江苏 南京 210095
Author(s):
ZENG Dandan RONG Zhenyang YUAN Yongtian WANG Xiaoli ZHENG Xiaobo
College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
关键词:
水稻恶苗病拟轮枝镰孢Pgk基因' target="_blank" rel="external">Pgk基因
Keywords:
rice bakanae diseaseFusarium verticillioidesloop-mediated isothermal amplification (LAMP)Pgk gene
分类号:
S432.4+4
DOI:
10.7685/jnau.201705023
摘要:
[目的]水稻恶苗病是为害水稻生长发育的重要病害,在我国的分布非常广泛,经常会造成严重的损失。拟轮枝镰孢是引起水稻恶苗病的重要病原菌,本研究意在建立由拟轮枝镰孢引起的水稻恶苗病的快速诊断技术。[方法]基于环介导等温扩增(loop-mediated isothermal amplification,LAMP)技术,以拟轮枝镰孢(Fusarium verticillioides)的3-磷酸甘油酸激酶(3-phosphoglyceric phosphokinase)基因Pgk为靶标,设计筛选LAMP特异性引物。[结果]建立了可直接从水稻恶苗病植株中检测拟轮枝镰孢并诊断由该病原菌引起的水稻恶苗病的LAMP检测技术(FvPgk-LAMP)。该检测技术可以从田间发病的水稻植株中直接对病原菌进行检测,反应条件为62℃、70 min。由于反应前在反应管内加入了羟基萘酚蓝(HNB),反应结束后可对结果进行直接判定,阳性反应呈天蓝色,阴性反应则仍然为紫色。该体系的最低检出限为目标菌纯DNA的100 pg·μL-1。应用该技术我们已成功且快速地对来自江苏南京和镇江的水稻恶苗病样本进行了病害诊断。[结论]本研究为拟轮枝镰孢引起的水稻恶苗病的诊断提供了快速且有效的新技术。
Abstract:
[Objectives]Rice bakanae disease is one of the most important diseases,and is appear in all the major rice cultivation areas throughout the world,often causing serious yield losses. Fusarium verticillioides is an important pathogen causing rice bakanae disease,and the purpose of this study is developing the method for the rapid diagnosis of rice bakanae disease caused by F.verticillioides. [Methods]In this study,we used the Pgk(3-phosphoglyceric phosphokinase) gene to design specific primers for F.verticillioides and developed FvPgk-LAMP assay. [Results]This assay can be used to detect F.verticillioides in diseased rice tissues from the field directly. The LAMP assay amplified the target gene efficiently at 62℃ over 70 min. A positive color(sky blue) was only observed at the presence of F.verticillioides,whereas other species showed no color change with the addition of hydroxynaphthol blue(HNB) dye prior to amplification. The sensitivity of the assay was 100 pg·μL-1 of genomic DNA. Suspected diseased rice samples collected from Nanjing and Zhenjiang of Jiangsu Province were diagnosed successfully using the LAMP assay reported here. [Conclusions]This study provides a new and readily available method for the rapid diagnosis of rice bakanae disease caused by F.verticillioides.

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相似文献/References:

[1]陈长军,周明国,叶钟音,等.肥床旱育水稻恶苗病的发生原因初探[J].南京农业大学学报,1997,20(2):42.[doi:10.7685/j.issn.1000-2030.1997.02.009]
 Chen Changjun,Zhou Mingguo,Ye Zhongyin,et al.CAUSES OF RICE BAKANAE ( FUSARIUM MONILIFORME) OCCURRANCE IN FERTILE AND DRY SEEDBED[J].Journal of Nanjing Agricultural University,1997,20(2):42.[doi:10.7685/j.issn.1000-2030.1997.02.009]

备注/Memo

备注/Memo:
收稿日期:2017-05-16。
基金项目:国家863计划项目(2012AA101501)
作者简介:曾丹丹,硕士研究生。
通信作者:郑小波,教授,主要从事卵菌与真菌分子遗传的研究,E-mail:xbzheng@njau.edu.cn。
更新日期/Last Update: 1900-01-01