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摘要
下丘脑和垂体调节母鸡的生殖生理和产蛋性能。为了解其产卵调控机制,利用 RNA⁃seq 技术对高
产和低产庄河大骨鸡的下丘脑和垂体组织进行测序和分析,获得 SNP/InDel 位点,并进行数据统
计及 生 物 信 息学 分 析 , 以鸡 基 因 组 作为 参 考 , 对 SNP 所在 基 因进 行 GO 富集 分 析 。结果 显 示 :
SNP/InDel 纯合子变异体数量高于杂合子变异体数量,垂体组织中的 SNP/InDel 数量高于下丘脑
组织;SNP 类型转换种类少于颠换,但转换类型的数量却远远高于颠换;垂体组织中的 SNP 所在
基因的 GO 富集程度与生产性能呈负相关关系(P<0.05),下丘脑组织中的 SNP 所在基因的 GO
富集程度与生产性能呈正相关关系(P<0.05)。研究结果为大骨鸡的选育以及改善其生产性能的
研究提供了理论依据。
Abstract
The reproductive physiology and laying performance of laying hens are regulated by
the hypothalamus and pituitary. To understand the mechanism of egg laying
regulation, we sequenced and analysed the hypothalamus and pituitary tissues in
high⁃ and low⁃yielding laying Chinese Dagu chickens (CDC) using RNA⁃seq, and
got the SNP/InDel sites, then conducted data statistics and bioinformatics analysis
using the chicken genome as a reference to analyze the genes of SNP. The result
showed that the number of SNP/InDel homozygous variants was higher than that of
heterozygous variants, and the number of SNP/InDel in pituitary tissues was
higher than that in hypothalamus tissues; the SNP conversion type was less than
transversion, but the number was inverse; the GO enrichment degree of SNP
gene in pituitary tissues was negatively correlated with its production performance
(P<0.05), but the GO enrichment degree of SNP gene in hypothalamus was
positively correlated with the production performance(P<0.05). The results
provide a theoretical basis for breeding Dagu chickens, and improve their
production performance.
译
关键词
大骨鸡; 转录组测序技术; 单核苷酸多态性; 插入缺失标记; 基因本体富集
Keywords
Dagu chicken; RNA sequencing(RNA⁃seq); single nucleotide polymorphism
(SNP); insertion⁃deletion(InDel); gene ontology enrichment
译
0 引 言
家禽 饲养业 在中国 养殖业 中占据着 不可或 缺的位 置,与 牛羊等 家畜相比 ,鸡饲 养的自 动化程 度高、
饲料转化率也非常高
[ 1]
,因此,鸡渐渐成为世界各地消费者普遍接受的优质动物。庄河大骨鸡属