Molecular and transcriptional characterization of GTHs and mPR during ovarian maturation in rock bream Oplegnathus fasciatus

文献类型： 外文期刊

第一作者： Shi, Bao

作者： Shi, Bao;Liu, Xuezhou;Xu, Yongjiang;Sun, Zhongzhi;Chen, Shengyi;Zang, Kun;Chen, Shengyi;Zang, Kun

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期刊名称：JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL GENETICS AND PHYSIOLOGY （ 影响因子：1.28； 五年影响因子：1.302 ）

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收录情况： SCI

摘要： The membrane progestin receptor (mPR) plays an important role in the regulation of oocyte meiotic maturation in fish. However, the endocrine regulation of multiple spawning in fish with asynchronous ovarian development remains to be determined. We identified four genes (FSH, LH, CG and mPR) that are widely expressed in both the reproductive and non-reproductive tissues of rock bream Oplegnathus fasciatus and examined their expression during ovarian maturation. The level of FSH transcripts in the pituitary remained high during vitellogenic stages, when the plasma levels of estradiol-17 reached maximum levels and oocyte development was stimulated. LH expression in the pituitary and ovary reached maximum levels during oocyte maturation when the plasma levels of testosterone also reached a maximum. A significant correlation between mPR transcript levels and the gonadosomatic index was observed during vitellogenesis and final maturation. Brain gonadotropin (FSH and LH) and mPR were continuously expressed at different stages of ovarian development. The dynamic and diverse nature of gonadotropins and mPR gene expression patterns suggests that these genes might jointly regulate ovarian development and maturation through the brain-pituitary-ovary axis in the rock bream endocrine system. J. Exp. Zool. 323A: 430-444, 2015. (c) 2015 Wiley Periodicals, Inc.

分类号： Q

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