当前位置: 首页 > 文章 > 利用免疫磁性分离-PCR检测安祖花细菌性枯萎病病原菌 园艺学报 2013,40 (8) 1600-1608
Position: Home > Articles > Detection of Xanthomonas axonopodis pv. dieffenbachiae in Authurium andreanum by Immunomagnetic Separation-PCR Acta Horticulturae Sinica 2013,40 (8) 1600-1608

利用免疫磁性分离-PCR检测安祖花细菌性枯萎病病原菌

作  者:
王钊;储丽红;赵凯;彭佳佳;明军;袁素霞;刘春
单  位:
南京林业大学风景园林学院;中国农业科学院蔬菜花卉研究所;宁夏大学农学院
关键词:
安祖花;地毯草黄单胞菌花叶万年青致病变种;免疫磁性分离-PCR;最大吸附值;捕获率
摘  要:
根据地毯草黄单胞菌花叶万年青致病变种(Xanthomonas axonopodis pv.dieffenbachiae)的RAPD序列设计特异性引物,并对羧基化磁珠的结合性能进行检验,从而建立和优化了免疫磁性分离–PCR体系,对安祖花细菌性枯萎病进行早期检测。结果表明:1mg磁珠对多克隆抗体最大吸附值为0.268mg,进行免疫磁性捕获时免疫磁珠的最佳浓度是0.566~0.741mg·mL-1。免疫磁性分离–PCR可以减少PCR反应中的抑制物质,对X.axonopodispv.dieffenbachiae的检测灵敏度可以达到10~100cfu·mL-1,比常规PCR检测灵敏至少100倍。
译  名:
Detection of Xanthomonas axonopodis pv. dieffenbachiae in Authurium andreanum by Immunomagnetic Separation-PCR
作  者:
WANG Zhao 1 ,CHU Li-hong 2 ,ZHAO Kai 1 ,PENG Jia-jia 3 ,MING Jun 1 ,YUAN Su-xia 1 ,and LIU Chun 1,* ( 1 Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China; 2 College of Landscape Architecture,Nanjing Forestry University,Nanjing 210037,China; 3 College of Agriculture,Ningxia University, Yinchuan 750021,China)
关键词:
Authurium andreanum;Xanthomonas axonopodis pv. dieffenbachiae;IMS-PCR; sensitivity;saturation absorption;capture rate
摘  要:
According to the RAPD of Xanthomonas axonopodis pv. dieffenbachiae,specific primers were designed,and binding ability of carboxyl magnetic beads were tested. The system of optimization of immunomagnetic separation-PCR(IMS-PCR)protocol for detecting the Bacterial Blight of Anthurium were establisted. The results showed that the saturate absorption of 1 mg carboxyl magnetic beads to the polyclonal antibodys is 0.268 mg. The optimal concentration of immunomagnetic beads(IMB)is 0.566– 0.741 mg · mL -1 when X. axonopodis pv. dieffenbachiae is captured. The detection sensitivity for X. axonopodis pv. dieffenbachiae,by IMS-PCR which can reduce the inhibitory substances in reaction,is 10–100 cfu · mL -1 . It is 100 times more sensitive than ordinary PCR at least.

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