辽宁师范大学学报(自然科学版)
遼寧師範大學學報(自然科學版)
료녕사범대학학보(자연과학판)
JOURNAL OF LIAONING NORMAL UNIVERSITY(NATURAL SCIENCE)
2014年
2期
252-257
,共6页
刘冉%赵玉琢%孙铭英%曹际娟
劉冉%趙玉琢%孫銘英%曹際娟
류염%조옥탁%손명영%조제연
实时荧光PC R%鸡伤寒沙门氏菌%快速鉴定
實時熒光PC R%鷄傷寒沙門氏菌%快速鑒定
실시형광PC R%계상한사문씨균%쾌속감정
real-time fluorescent PCR%Salmonella gallinarum%rapid identification
建立基于Taqman探针实时荧光PCR检测鸡伤寒沙门氏菌(Salmonella galli-narum)的方法.根据GenBank公布的鸡伤寒沙门氏菌基因序列,设计引物和Taqman探针,采用实时荧光PC R进行特异性、灵敏性及模拟样品的检测实验.结果表明:特异性引物和探针可从34株鸡伤寒沙门氏菌菌株、26株其他血清型沙门氏菌和7株非沙门氏菌菌株中检测出全部的34株鸡伤寒沙门氏菌.以鸡伤寒沙门氏菌梯度稀释菌液DNA为模板进行实时荧光PCR实验,菌株模板浓度与Ct值呈良好线性关系,线性系数(R2)为0.999,扩增效率为88.2%,最低检测浓度为5cfu/mL.对已接种鸡伤寒沙门氏菌的模拟样品同时进行实时荧光PCR检测和传统方法鉴定,两者结果一致.该方法特异性好、灵敏度高,是快速鉴定鸡伤寒沙门氏菌的有效方法.
建立基于Taqman探針實時熒光PCR檢測鷄傷寒沙門氏菌(Salmonella galli-narum)的方法.根據GenBank公佈的鷄傷寒沙門氏菌基因序列,設計引物和Taqman探針,採用實時熒光PC R進行特異性、靈敏性及模擬樣品的檢測實驗.結果錶明:特異性引物和探針可從34株鷄傷寒沙門氏菌菌株、26株其他血清型沙門氏菌和7株非沙門氏菌菌株中檢測齣全部的34株鷄傷寒沙門氏菌.以鷄傷寒沙門氏菌梯度稀釋菌液DNA為模闆進行實時熒光PCR實驗,菌株模闆濃度與Ct值呈良好線性關繫,線性繫數(R2)為0.999,擴增效率為88.2%,最低檢測濃度為5cfu/mL.對已接種鷄傷寒沙門氏菌的模擬樣品同時進行實時熒光PCR檢測和傳統方法鑒定,兩者結果一緻.該方法特異性好、靈敏度高,是快速鑒定鷄傷寒沙門氏菌的有效方法.
건립기우Taqman탐침실시형광PCR검측계상한사문씨균(Salmonella galli-narum)적방법.근거GenBank공포적계상한사문씨균기인서렬,설계인물화Taqman탐침,채용실시형광PC R진행특이성、령민성급모의양품적검측실험.결과표명:특이성인물화탐침가종34주계상한사문씨균균주、26주기타혈청형사문씨균화7주비사문씨균균주중검측출전부적34주계상한사문씨균.이계상한사문씨균제도희석균액DNA위모판진행실시형광PCR실험,균주모판농도여Ct치정량호선성관계,선성계수(R2)위0.999,확증효솔위88.2%,최저검측농도위5cfu/mL.대이접충계상한사문씨균적모의양품동시진행실시형광PCR검측화전통방법감정,량자결과일치.해방법특이성호、령민도고,시쾌속감정계상한사문씨균적유효방법.
A method was developed for rapid identification of detecting Salmonella gallinarum by real-time fluorescent PCR .According to the gene of Genbank ,a set of primers and Taqman probe was de-signed to perform specific ,sensitive and simulation sample tests by real-time PCR .The results were confirmed that the specificity probe correctly distinguished 34 Salmonella gallinarum strains from 24 other Salmonella serotypes strains and 7 non-Salmonella strains .Gradient dilutions of Salmonella gallinarum were used as template to perform real-time PCR assay which presented linear relationship between the concentration of template and Ct value .Linear coefficient (R2 ) ,efficiency and detection limit were 0 .999 ,88 .2% and 5 cfu/mL correspondingly ,simulation samples inoculated with Salmo-nella gallinarum were detected by real-time PCR assay .The PCR method yielded a 100% correlation with results obtained by conventional culture method .The newly method showed that a high specific-ity ,sensibility and accuracy could be applied for rapid identification of Salmonella gallinarum .