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A novel male-specific SET domain-containing gene setdm identified from extra microchromosomes of gibel carp males

Science Bulletin 2017年第8期62卷 528-536页

作者： Xi-Yin Li Xiao-Li Liu Miao Ding Zhi Li Li Zhou Xiao-Juan Zhang Jian-Fang Gui Stare Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences University of Chinese Academy of Sciences Wuhan 4.30072 China

Various genes have been screened on extra chromosomes, but their molecular characterization, expression pattern and biological function are still unclear. Here, we utilized a male-specific sequence of polyploid gibel carp （Carassius gibelio） to identify a novel male-specific SET （Su（var）3-9, Enhancer- of-zeste, Trithorax） domain-containing gene setdm on extra microchromosomes of gibel carp males. And setdm was characterized in molecule and expression aspects, in which its expression was specific to testis, and had relative high transcription during middle/late stages of testis development. Moreover, prominent expression of Setdm in spermatogenic cells was observed in testis through immunofluorescence co-localization analysis. These results suggest that biological function of setdrn might be related to testis development and spermatogenesis of gibel carp. Additionally, the homeologous gene setdmf of setdm, was also characterized, and its expression was gonad-specific, in which its expressed product was detected to mainly distribute in gametogenic cells of testis and ovary, and to have dynamic expression pattern similar to that of setdm. Based on the current results, we propose that the novel male-specific setdm on extra microchromosomes might be functional divergence gene of the gonad-specific setdmf. Therefore, these findings will help us to further understand evolutionary fate and functional role of genes on extra microchromosomes.

关键词： microchromosomes Snpernumerary chromosomes Sex determination Spermatogenesis Polyploid

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Discovery of microchromosomes in wheat and their special behavior in meiosis

引用

Chinese Science Bulletin 1997年第24期42卷 2084-2087页

作者： XU Qi, YU Ling, TIAN Zengrong, ZHU Jianfeng, LI Bin and LI Zhensheng Laboratory of Plant Genetic Engineering and Breeding of Shaanxi Province, Northwestern Institute of Botany, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China 2. State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics, Chinese Academy of Sciences, Beijing 100101, China Laboratory of Plant Genetic Engineering and Breeding of Shaanxi Province Northwestern Institute of Botany Chinese Academy of Sciences Yangling Shaanxi China State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics Chinese Academy of Sciences Beijing China

THERE are 42 chromosomes in common wheat (Triticum aestivum L). The extra microchro-mosomes were discovered in alloplasmic lines of common wheat with cytoplasms of Ae. muti-ca, Secale cereale, Elytrigia elongatum and Agropyron glaucum. The microchromo-somes were discovered in amphiploid of Triticum aestivum-Secale cereale (DDRR) too.

关键词： wheat microchromosomes behavior in meiosis.

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