Authors: Xuewen Xu Haifang Qiu ZhiQiang Du Bin Fan Max F Rothschild Fan Yuan Bang Liu
Publish Date: 2009/07/26
Volume: 37, Issue: 1, Pages: 451-459
Abstract
CRP3 is the musclespecific form of the cysteine and glycinerich protein family and plays an important role in myofiber differentiation Here we isolated and characterized its coding gene CSRP3 from porcine muscle Phylogenic analyses demonstrated that CSRP3 diverged first and is distinguished from two other members CSRP1 and CSRP2 CSRP3 mRNA was upregulated during the development of porcine embryonic skeletal muscle indicating its potential importance in muscle growth Genetic variant analyses detected multiple variations in an approximately 400 bp region covering exon 4 and its downstream intron and two haplotypes were identified by sequencing One of synonymous substitutions C1924T was used for linkage and association analyses It was revealed that the substitution of C1924T had significant associations with firmness P 001 Lab Loin pH Off Flavor Score and Water Holding Capacity P 005 and a suggestive effect P 01 on Flavor Score and Average Glycolytic Potential in a Berkshire × Yorkshire F2 population The association analyses results agreed with the gene’s localization to a QTL region for meat quality traits on porcine chromosome 2p1417 demonstrated by both linkage mapping and RH mapping These results provide fundamental evidence for CSRP3 as a functional candidate gene affecting pig meat qualityWe are grateful to Dr Martine Yerle for providing the RH panel This research was supported by National Natural Science Foundation of China 30771536 National High Science and Technology Foundation of China 2007AA10Z168 and The College of Agriculture and Life Sciences Iowa State University and State of Iowa and Hatch Funding
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