暗纹东方鲀生长性状相关微卫星标记筛选  

Screening growth-related microsatellite markers in Takifugu obscurus

作　　者：马爱军[1,2] 邹杰[1,3] 孙建华[1,3] 王婷[1] 王广宁[1] 崔文晓[1,3] 王新安[1,2] 刘大勇[4] 郭正龙[4] 

机构地区：[1]中国水产科学研究院黄海水产研究所农业部海洋渔业可持续发展重点实验室青岛市海水鱼类种子工程与生物技术重点实验室,山东青岛266071 [2]青岛海洋科学与技术国家实验室海洋生物学与生物技术功能实验室,山东青岛266071 [3]上海海洋大学水产与生命学院,上海201306 [4]江苏中洋集团股份有限公司,江苏南通226600

出　　处：《海洋科学》2016年第10期16-24,共9页Marine Sciences

基　　金：江苏省科技支撑计划资助项目(BE2013345);江苏省水产三新工程资助项目(Y2013-12)~~

摘　　要：为了筛选与暗纹东方鲀(Takifugu obscurus)生长相关的分子标记,作者采用SSR结合BSA技术对同龄孵化群体的同池养殖暗纹东方鲀生长差异性状标记进行筛选。利用85对微卫星引物对暗纹东方鲀生长快、慢各30尾个体构建的两个基因池进行分析,共筛选到14个差异位点。然后分析这14个差异微卫星位点在这60个暗纹东方鲀个体中的基因型差异,结果表明:位点TOP03、TOG01、fms15、fms75与生长性状呈现极显著负相关关系(P<0.01),fms89与生长性状呈现极显著正相关关系(P<0.01)。用另外30个个体(生长快慢各15个)进行验证实验后,结果只有位点fms15、fms75与生长性状显著相关,相关系数分别为–0.411和–0.384。这两个微卫星位点对于暗纹东方鲀生长性状有显著效应,为开展暗纹东方鲀的分子标记辅助育种提供了有价值的参考标记。A population of Takifugu obscurus with significant growth differences was investigated for screening molecular markers linked to growth traits, using SSR combined with bulked segregation analysis（BSA）. Two gene pools were respectively constructed using 30 DNA templates isolated from T. obscurus samples with significantly different growth rates and then amplified by 85 pairs of microsatellite primers. The unique alleles were found in 14 loci. These 60 T. obscurus individuals were genotyped by SSRs. The results showed that loci TOP〈03, TOG01, fms15, and fms75 had a highly significant negative correlation with growth trait（P〈0.01）, while fms89 showed extremely significant positive correlation with growth trait（P〈0.01）. The verification test using another population of 30 randomly selected T. obscurus with significantly different growth rates indicated that only loci fms15 and fms75 were significantly correlated with growth trait, with correlation coefficients of –0.384 and –0.411, respectively. Therefore, these two microsatellite loci with a significant linkage with growth traits could be used as reference markers for marker-assisted breeding of T. obscurus.

关 键 词：暗纹东方鲀(Takifugu obscurus) 生长性状 微卫星 相关性分析 

分 类 号：S917.4[农业科学—水产科学]