Identification of potential sex-related genes in <i>Siniperca</i> <i>chuatsi</i> -- Journal of Oceanology and Limnology,2021,39(4):1500-1512

	Cite this paper:
	Qiaoying ZHU, Chong HAN, Cheng PENG, Xingni ZHOU, Chongwei WANG, Linqiang HAN, Shuisheng LI, Guifeng LI, Haoran LIN, Yong ZHANG. Identification of potential sex-related genes in Siniperca chuatsi[J]. Journal of Oceanology and Limnology, 2021, 39(4): 1500-1512

Identification of potential sex-related genes in Siniperca chuatsi

Qiaoying ZHU^1,2, Chong HAN^1,2, Cheng PENG³, Xingni ZHOU^1,2, Chongwei WANG^1,2, Linqiang HAN⁴, Shuisheng LI^1,2, Guifeng LI¹, Haoran LIN^1,2, Yong ZHANG^1,2

1 State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China;
2 Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266373, China;
3 Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou 510260, China;
4 Guangdong Liangshi Aquatic Seed Industry Co., Ltd., Foshan 528100, China

Abstract:

Mandarin fish (Siniperca chuatsi) is an economically important freshwater fish cultured in China. In this species, females grow faster than males. However, due to the lack of available genomic and transcriptome information, the mechanisms of sex differentiation remain poorly understood. In this study, Illumina high-throughput sequencing technology was used to sequence four cDNA libraries; the tissues examined included hypothalamus, pituitary gland, ovary, and testis. A total of 134 124 high-quality unigenes were obtained on average length of 1 361 bp and N50 of 3 312 bp. A search of all-unigene sequences against NR, NT, SwissProt, KOG, KEGG, GO, and InterPro databases resulted in 59 688 (44.50%), 76 329 (56.91%), 50 432 (37.60%), 45 741 (34.10%), 48 760 (36.35%), 5 241 (3.91%), and 46 099 (34.37%) annotations, respectively. In a comparison of ovarian and testicular libraries, 15 289 ovary-biased genes and 10 035 testis-biased genes were identified, including a series of genes related to sex determination and differentiation, such as cyp19a1a, foxl2, sox9, dmrt1, amh, and others. In addition, 49 495 SSRs and 85 899 SNPs were detected in transcriptome data. Quantitative real-time PCR results of 15 sex-related functional genes indicated that RNA-seq data was reliable. This study will contribute to a better understanding of the molecular mechanisms of sex differentiation and development in Mandarin fish.

Key words: transcriptome|Mandarin fish|HPG axis|female and male

Received: 2020-07-17 Revised: 2020-08-31

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Articles by Qiaoying ZHU

Articles by Chong HAN

Articles by Cheng PENG

Articles by Xingni ZHOU

Articles by Chongwei WANG

Articles by Linqiang HAN

Articles by Shuisheng LI

Articles by Guifeng LI

Articles by Haoran LIN

Articles by Yong ZHANG

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