Transcriptome analysis of gonads and brain of giant freshwater prawn (Macrobrachium rosenbergii): screening and validation of genes related to germ cell development
文献类型： 外文期刊
作者： Wei, Jie 1 ; Hong, Kunhao 1 ; Zhou, Qiaoyan 1 ; Wang, Yakun 1 ; Li, Wei 1 ; Liu, Xiaoli 1 ; Hong, Xiaoyou 1 ; Chen, Chen 1 ; Yu, Lingyun 1 ; Zhu, Xinping 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resource Applicat &, Minist Agr & Rural Affairs, Guangzhou, Peoples R China
2.Shanghai Ocean Univ, Natl Demonstrat Ctr Expt Fisheries Sci Educ, Shanghai, Peoples R China
关键词： macrobrachium rosenbergii; transcriptome; germ cell; RAD51; Fem-1C; SPDS; vasa
期刊名称：FRONTIERS IN MARINE SCIENCE （ 影响因子：5.247； 五年影响因子：5.72 ）
ISSN：
年卷期： 2022 年 9 卷
页码：
收录情况： SCI
摘要： Macrobrachium rosenbergii is an important cultured shrimp worldwide, and its precocious puberty has led to serious economic losses. Although reproductive sterilization can avoid this problem, little is known about the molecular mechanisms underlying gonadal development and gametogenesis in M. rosenbergii. Here, we conducted transcriptome analysis of the ovaries, testes, and male/female brain tissues of M. rosenbergii to discover germ cell development-related genes. A total of 60,607 unigenes were identified, of which 20,963 unigenes could be functionally annotated. Eighteen candidate genes were identified by Venn diagram analysis, keyword, and known marker search, followed by elimination of low-expression and repetitive genes. Subsequent real-time quantitative reverse transcription polymerase chain reaction and in situ hybridization identified five genes (RAD51, vasa, SPDS, MRR, and Fem-1C) associated with germ cell development-RAD51, vasa, and SPDS were expressed in both male and female gonads, whereas Fem-1C was specifically expressed in the ovary and MRR in the testis. In the ovary, vasa, SPDS, and Fem-1C were mainly expressed in stage 1-3 oocytes, while RAD51 was expressed in stage 2-3 oocytes. In testis, vasa were significantly expressed in spermatogonia and primary spermatocytes, whereas RAD51 and SPDS were only enriched in spermatogonia and MRR in vas deferens. Our research indicates that these five genes are important germ cell development-related genes, of which RAD51, SPDS, and Fem-1C were proven to function in germ cells of this species for the first time. The discovery of these genes could help develop molecular breeding techniques to overcome precocious puberty in M. rosenbergii.
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