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	Identification of a Serum amyloid A gene and the association of SNPs with Vibrio-resistance and growth traits in the clam Meretrix meretrix
	Zou, Linhu1,2; Liu, Baozhong1
	2015-04-01
发表期刊	FISH & SHELLFISH IMMUNOLOGY
卷号	43期号:2页码:301-309
文章类型	Article
摘要	Serum amyloid A (SAA), an acute response protein as well as an apolipoprotein, is considered to play crucial roles in both innate immunity and lipid metabolism. In this study, a SAA gene (MmSAA) was identified in the clam Meretrix meretrix. The full length DNA of MmSAA was 1407 bp, consisting of three exons and two introns. The distribution of MmSAA in clam tissues was examined with the highest expression in hepatopancreas. In response to the Vibrio parahaemolyticus challenge, MmSAA mRNA showed significantly higher expression at 24 h post-challenge in experimental clams (P < 0.05). Forty-eight single nucleotide polymorphisms (SNPs) in the DNA partial sequence of MmSAA were discovered and examined for their association with Vibrio-resistance and growth traits, respectively. The single SNP association analysis indicated that five single SNPs (g.42, g.72, g.82, g.147 and g.165) were significantly associated with Vibrio-resistance (P < 0.05). Haplotype analysis produced additional support for association with the Chi-square values 6393 (P = 0.012). Among the five selected SNPs, the effect of a missense mutation (g.82, A -> G) was detected by site-directed mutagenesis with fusion expression of protein assay, and the result showed that the recombinant plasmids containing wild-type pET30a-MmSAA had more inhibition effect than the mutant ones on the growth rate of the host bacteria. In addition, four growth traits of the clams in 09G3SPSB population were recorded and the SNP g.176 was found to be significantly associated with the growth traits with the Global score value 0.790 (P = 0.015). Our findings suggested that common genetic variation in MmSAA might contribute to the risk of susceptibility to Vibrio infection and might be associated with the growth traits in the clams M. meretrix, and more works are still needed to validate these SNPs as potential markers for actual selective breeding. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Meretrix Meretrix Serum Amyloid a Single Nucleotide Polymorphism Vibrio-resistance Growth Trait
DOI	10.1016/j.fsi.2015.01.007
收录类别	SCI
语种	英语
WOS记录号	WOS:000352923700002
引用统计	被引频次：15[WOS]   [WOS记录]     [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/25480
专题	实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	实验海洋生物学重点实验室
推荐引用方式 GB/T 7714	Zou, Linhu,Liu, Baozhong. Identification of a Serum amyloid A gene and the association of SNPs with Vibrio-resistance and growth traits in the clam Meretrix meretrix[J]. FISH & SHELLFISH IMMUNOLOGY,2015,43(2):301-309.
APA	Zou, Linhu,&Liu, Baozhong.(2015).Identification of a Serum amyloid A gene and the association of SNPs with Vibrio-resistance and growth traits in the clam Meretrix meretrix.FISH & SHELLFISH IMMUNOLOGY,43(2),301-309.
MLA	Zou, Linhu,et al."Identification of a Serum amyloid A gene and the association of SNPs with Vibrio-resistance and growth traits in the clam Meretrix meretrix".FISH & SHELLFISH IMMUNOLOGY 43.2(2015):301-309.

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