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1、现代食品科技ModernFoodScienceandTechnology2014,Vol.30,No.12利用高通量测序分析云南两个地区豆豉微生物群落的多样性李晓然,刘晓峰,张海燕,罗义勇,柳陈坚(昆明理工大学生命科学与技术学院,云南昆明650500)摘要:豆豉是一种具有独特风味的传统发酵食品。研究豆豉的微生物群落多样性,对于提高豆豉质量和食用安全性具有重要意义。本研究分别采取云南西双版纳州的景洪市和勐海县的两个豆豉样品,提取DNA,PCR扩增细菌16SrDNA和真菌ITS区域并进行焦磷酸测序,通过分析测序所得结果比较两个豆豉样品中的细菌和真菌群落多样性。
2、结果表明:景洪样品的最优势细菌是Leuconostocmesenteroides,其次是Leuconostocfallax。勐海样品中丰度最高的细菌是Staphylococcusgallinarum,其次是Tetragenococcushalophilus。两个样品中都含有少数序列与能够产细菌素的Weissellaconfusa和Weissellacibaria具有较高相似性。两个样品的优势真菌都是耐盐的Candidaetchellsii和Candidaversatilis。总之,西双版纳的豆豉具有较高的微生物群落多样性,以嗜盐菌居多。关键词:豆豉;微生物
3、群落;多样性文章篇号:1673-9078(2014)12-61-67DOI:10.13982/j.mfst.1673-9078.2014.12.011MicrobialCommunityDiversityinDouchifromYunnanProvinceUsingHigh-throughputSequencingTechnologyLIXiao-ran,LIUXiao-feng,ZHANGHai-yan,LUOYi-yong,LIUChen-jian(FacultyofLifeScienceandTechnology,KunmingUniversityo
4、fScienceandTechnology,Kunming650500,China)Abstract:Douchiisatraditionalfermentedfoodwithauniqueflavor.Studyingmicrobialdiversitywithindouchiisimportanttoimprovethequalityandfoodsafetyrelatedtoconsumptionofdouchi.Inthisstudy,twokindsofdouchisampleswerecollectedfromJinghong(JH)andMe
5、nghai(MH)regionsofXishuangbannaDaiautonomousprefectureintheYunnanProvince.AfterDNAextraction,thebacterial16SribosomalDNA(rDNA)andfungalinternaltranscribedspacer(ITS)regionwereamplifiedandbar-codedpyrosequencingwascarriedout.Thediversityofbacterialandfungalcommunitiesinthetwosample
6、swasanalyzedandcomparedbasedonthesequencingdata.TheresultsindicatedthatthepredominantbacteriumintheJHsamplewasLeuconostocmesenteroides,followedbyL.fallax.ThemostabundantbacteriumintheMHsamplewasStaphylococcusgallinarum,followedbyTetragenococcushalophilus.Theresultsforbothsamplessh
7、owedasmallnumberofsequences,whichshowedhighsimilaritywiththoseofsalt-tolerantCandidaetchellsiiandbacteriocin-producingC.versatilis,bothofwhichwerethedominantfungiinbothsamples.Inconclusion,thedouchifromXishuangbannashowedhighmicrobialdiversityandthepredominantmicroorganismsweresal
8、ttolerant.Keywords:douchi;microbi