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高灵敏假单胞菌铁载体的平板检测方法
引用本文:陈绍兴,赵翔,沈萍,谢志雄.高灵敏假单胞菌铁载体的平板检测方法[J].微生物学通报,2006,33(3):122-127.
作者姓名:陈绍兴  赵翔  沈萍  谢志雄
作者单位:武汉大学生命科学学院,武汉,430072
基金项目:武汉市科学与技术晨光计划资助项目(No.20015005051)
摘    要:CAS蓝色检测平板是一种筛选、检测各类细菌铁载体的常用方法,而蔗糖-天冬酰氨培养基被用于假单胞菌产铁载体规律的研究。用天冬氨酸替代天冬酰氨,将CAS蓝色检测液与蔗糖-天冬氨酸培养基(MSA培养基)相结合,得到一种改进的MSA-CAS检测平板。通过对假单胞菌属7个种8个株进行荧光与非荧光铁载体检测方面的比较研究,结果表明MSA-CAS检测平板假单胞菌铁载体的检测灵敏度比通用CAS检测平板高,而且在检测荧光铁载体方面具有荧光背景低、荧光铁载体晕圈明显和晕圈与背景的对比度大的优点。

关 键 词:铁载体  CAS检测平板  假单胞菌  MSA培养基
文章编号:0253-2654(2006)03-0122-06
收稿时间:2005-08-19
修稿时间:2005-10-23

High-sensitive Detection Method for Siderophores from Pseudomonas
CHEN Shao-Xing,ZHAO Xiang,SHEN Ping,XIE Zhi-Xiong.High-sensitive Detection Method for Siderophores from Pseudomonas[J].Microbiology,2006,33(3):122-127.
Authors:CHEN Shao-Xing  ZHAO Xiang  SHEN Ping  XIE Zhi-Xiong
Institution:College of Life Sciences, Wuhan University, Wuhan 430072
Abstract:CAS (Chrome azurol S) assay was a universal method for detecting the bacterial siderophores, and Sugar-Asn liquid medium has been applied to the studies on siderophores from Pieudomonas. In this paper, Asp has been substituted for Asn, and MSA-CAS agar plate was developed by integrating the MSA (sugar-Asp) medium and CAS bright blue dye, which has been used in the universal CAS assay. On the aspect of siderophores detection , 8 strains of 7 species from Pseudomonas had been screened on MSA-CAS agar plates and universal CAS assay respectively. The results showed that MSA-CAS agar was higher-sensitive and lower basic fluorescent than universal CAS assay.
Keywords:Siderophore  CAS assay  Pseudomonas  MSA medium
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