Publication date: 20 March 2017
Source:Gene, Volume 605
Author(s): Haiqi Zhang, Xiaojun Xu, Zhongyang He, Tianlun Zheng, Jianzhong Shao
The Chinese soft-shelled turtle (Pelodiscus sinensis) is a highly important freshwater aquaculture species in China. The molecular mechanisms underlying changes in immunity and growth in hybrid vigor are not well understood. In the present study, the transcriptomes from significantly different P. sinensis strains (Qingxi black turtle, B and Japanese strain, J) and the resulting hybrid (Zajiao-1, F) were sequenced using an Illumina sequencing platform. Differentially expressed genes (DEGs) between Zajiao-1 and the Qingxi black turtle were enriched mainly in the HTLV-I infection and Hippo signaling pathways, while DEGs between the Zajiao-1 and Japanese strain were enriched mainly in tryptophan metabolism, caner-associated pathways, transcriptional dysregulation in cancer, amebiasis, Fcγ-mediated phagocytosis and the peroxisome pathway. Highly expressed genes involved in the regulation of disorders of the fatty acid biosynthesis, immune and cardiovascular systems in P. sinensis were found among the DEGs. Enrichment categories for gene ontology included cellular processes, metabolic pathways, and the actin cytoskeleton pathway. The reliability of the sequencing data was verified through quantitative real-time polymerase chain reaction analysis of 20 immunity or growth-related genes. These findings offer new insights into heterosis of growth traits and resistance to stresses and potential strategies for selective breeding.
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