In Silico Chromosome Mapping of the Male-Specific/Linked Loci in the Jade Perch (<i>Scortum barcoo</i>) Suggests Chromosome 19 as the Putative Y Sex Chromosome
2023
Thitipong Panthum | Pish Wattanadilokchatkun | Kitipong Jaisamut | Worapong Singchat | Syed Farhan Ahmad | Narongrit Muangmai | Prateep Duengkae | Agostinho Antunes | Kornsorn Srikulnath
Jade perch (<i>Scortum barcoo</i>) has an XX/XY sex-determination system (SDS); however, its sex chromosomes and sex-determining region remain unknown. The recent availability of the jade perch chromosome-level genomic data provides a valuable resource for pinpointing the location of functional genes and the whole genomic structure. In this study, we conducted. In silico chromosome mapping of male-specific/linked loci of jade perch and identified a potential 11.18 Mb male-linked region localized on chromosome 19 (SBA19). Repeat annotations of the male-linked region revealed an abundance of transposable elements, particularly Ty3/Gypsy and novel repeats. Sequence analysis of this region identified a remnant of <i>amh</i> gene, which is considered a potential candidate for SDS in many teleosts. A duplicate copy of <i>amh</i> remnant was located at SBA6. These duplicated <i>amh</i> copies were highly similar to those of XX/XY SDS in teleosts, in which one copy of <i>amh</i> was identified on the Y sex chromosome. Taken all together, we hypothesize SBA19 as the putative sex chromosome and the 11.18 Mb male-linked region to be a potential male-determining region.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Directory of Open Access Journals
