生物
性腺
扇贝
转录组
性腺发育
性别分化
WNT4型
基因
遗传学
Wnt信号通路
解剖
基因表达
渔业
作者
Min Chen,Yin Chen,Weian Cao,Caihui Wang,Jing Ning,Bo Liu,Xia Lu,Chunde Wang
摘要
Argopecten scallops are hermaphroditic bivalves and commercially important in aquaculture. Up to now, the molecular mechanism of sex differentiation and gonad growth/maturation in hermaphroditic animals is still largely unknown. In this study, we analyzed the transcriptome of the gonads at different stages of the QN Orange scallop, a new scallop strain selected from the hybrids between the bay scallop and the Peruvian scallop. Among sex differentiation-related genes, 5 transcription factors (TFs) (1 SOX, 2 FOXL and 2 GATA) and 2 TGF-βs (2 BMP) were mainly expressed in the male part and 2 TFs (1 FOXL and 1GATA) and 2 TGF-βs (2 BMP) were mainly expressed in the female part of the gonads. Among gonad growth/maturation related genes, 1 TF (GATA) might be only involved in male gonad growth/maturation, 8 TFs (1 SOX, 1 WNT, 2 FOXL and 4 GATA) and 3 TGF-βs (1 GDF and 2 BMP) only participated in ovarian growth/maturation, 3TFs (1 SOX, 1 DMRT and 1 FOXL) and 2 TGF-βs (1 GDF and 1 BMP) might be involved in both male and female gonad growth/maturation. Based on the results of transcriptome and qRT-PCR, 11 genes were screened to be involved in sex differentiation and 16 genes might be involved in gonad growth/maturation. The results of this study may provide new insights into the understanding of the mechanisms of sex differentiation and gonad growth/maturation in hermaphroditic scallops.
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