Construction of Two BAC Libraries from Half-Smooth Tongue Sole Cynoglossus semilaevis and Identification of Clones Containing Candidate Sex-Determination Genes |
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Authors: | Chang-Wei Shao Song-Lin Chen Chantel F. Scheuring Jian-Yong Xu Zhen-Xia Sha Xiao-Li Dong Hong-Bin Zhang |
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Affiliation: | (1) Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 106 Nanjing Road, Qingdao, Shandong, 266071, China;(2) Department of Soil and Crop Sciences and Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX 77843, USA; |
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Abstract: | Half-smooth tongue sole (Cynoglossus semilaevis) is an increasingly important aquaculture species in China. It is also a tractable model to study sex chromosome evolution and to further elucidate the mechanism of sex determination in teleosts. Two bacterial artificial chromosome (BAC) libraries for C. semilaevis, with large, high-quality inserts and deep coverage, were constructed in the BamHI and HindIII sites of the vector pECBAC1. The two libraries contain a total of 55,296 BAC clones arrayed in 144 384-well microtiter plates and correspond to 13.36 haploid genome equivalents. The combined libraries have a greater than 99% probability of containing any single-copy sequence. Screening high-density arrays of the libraries with probes for female-specific markers and sex-related genes generated between 4–46 primary positive clones per probe. Thus, the two BAC libraries of C. semilaevis provided a readily useable platform for genomics research, illustrated by the isolation of sex determination gene(s). |
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