摘要
为研究本土酿酒酵母的种内多态性，以及本土野生酵母与商业酵母之间的差异性，本实验采用4个微卫星标记（ScAATl、YOR267C、C11、YPL009C）分析18株商业酵母,128株陕西泾阳分离的野生酿酒酵母的遗传多样性，利用PopGen32进行遗传参数的分析。结果表明：4个位点共检测出66个等位基因，每个位点等位基因数为16～18个；平均多态信息含量0．8623，均为高多态位点；46株菌表现出39种基因型，分辨率为98．94％；观测杂合度0．4783～0．6585。野生酵母和商业酵母均具有丰富的遗传多样性，两个群体各具有自己独特的等位基因，且两者在聚类图中有较清晰的界线。
In order to analyze the genetic diversity of indigenous wine yeasts and the differences between indigenous isolates and commercial wine yeast strains, genetic variability of 28 isolates from Jingyang, Shaanxi Province and 18 commercial strains was analyzed using four microsatellite markers （ScAAT1, YOR267C, Cll and YPL009C）. Meanwhile, genetic parameters were also analyzed by PopGen32. Forty-six strains were amplified by four microsatellite prime pairs, and generated a total of 66 polymorphic bands with 16-18 alleles for each locus. The average polymorphism information content （PIC） of all strains at four loci was 0.862 3, suggesting that all the four SSR loci were hypervariable. Forty-six strains gave 39 different pattems with a discriminatory power of 98.94%. The heterozygosity was observed as 0.478 3-0.658 5. These results indicate that indigenous wine yeasts and commercial yeasts have high levels of genetic diversity, and both have unique alleles. Both kinds of strains have clear clustering boundary in the phylogentic tree.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2014年第1期130-133,共4页
Food Science
基金
国家自然科学基金项目(31271917)
西北农林科技大学基本科研业务费项目(22050205)
国家现代农业(葡萄)产业技术体系建设专项(CARS-30-jg-3)
关键词
微卫星
商业酵母
本土酿酒酵母
遗传多样性
microsatellite
commercial yeasts
indigenous wine yeast
genetic diversity
作者简介
张留燕（1988-），女，硕士研究生，研究方向为酿酒微生物。E—mail：forever7365@163．com。
通信作者：刘延琳（1966-），女，教授，博士，研究方向为葡萄、葡萄酒及酿酒微生物。E-mail：yanlinliu@nwsuaf．edu．cn
