Chromosomal rearrangement in Pectinidae revealed by rRNA loci and implications for bivalve evolution
文献类型：期刊论文
| 作者 | Wang, YP; Guo, XM |
| 刊名 | BIOLOGICAL BULLETIN
 |
| 出版日期 | 2004-12-01 |
| 卷号 | 207期号:3页码:247-256 |
| 关键词 | Crassostrea-gigas Thunberg In-situ Hybridization Pacific Oyster Molecular Phylogeny Cytochalasin-b 5s Rdna Genes Dna Mollusks Sequence |
| ISSN号 | 0006-3185 |
| 文献子类 | Article |
| 英文摘要 | Karyotype and chromosomal localization of major (18-5.8-28S) and minor (5S) ribosomal RNA genes were studied in two species of Pectinidae, zhikong (Chlamys farreri) and bay (Argopecten irradians irradians) scallops. using fluorescence in situ hybridization (FISH). C. farreri had a haploid number of 19 with a karyotype of 3m + 4sm + 7sm-st + 4st + 1st-t, and A. i. irradians had a haploid number of 16 with a karyotype of 5st + 11t. In C. farreri, the major and minor rRNA genes had one locus each and were mapped to the same chromosome-Chromosome 5. In A. i. irradians, the major rRNA genes had two loci, located on Chromosomes 4 and 8, and the 5S rRNA gene was found at a third chromosome-Chromosome 10. Results of this and other studies indicate that karyotype of A. i. irradians (n = 16, 21 arms) is secondary and derived from an ancestral karyotype similar to that of C. farreri (n = 19, 38 arms) through considerable chromosomal loss and rearrangements. The ability to tolerate significant chromosomal loss suggests that the modal karyotype of Pectinidae and possibly other bivalves with a haploid number of 19 is likely tetraploid; i.e., at least one genome duplication has occurred during the evolution of Bivalvia.; Karyotype and chromosomal localization of major (18-5.8-28S) and minor (5S) ribosomal RNA genes were studied in two species of Pectinidae, zhikong (Chlamys farreri) and bay (Argopecten irradians irradians) scallops. using fluorescence in situ hybridization (FISH). C. farreri had a haploid number of 19 with a karyotype of 3m + 4sm + 7sm-st + 4st + 1st-t, and A. i. irradians had a haploid number of 16 with a karyotype of 5st + 11t. In C. farreri, the major and minor rRNA genes had one locus each and were mapped to the same chromosome-Chromosome 5. In A. i. irradians, the major rRNA genes had two loci, located on Chromosomes 4 and 8, and the 5S rRNA gene was found at a third chromosome-Chromosome 10. Results of this and other studies indicate that karyotype of A. i. irradians (n = 16, 21 arms) is secondary and derived from an ancestral karyotype similar to that of C. farreri (n = 19, 38 arms) through considerable chromosomal loss and rearrangements. The ability to tolerate significant chromosomal loss suggests that the modal karyotype of Pectinidae and possibly other bivalves with a haploid number of 19 is likely tetraploid; i.e., at least one genome duplication has occurred during the evolution of Bivalvia. |
| 学科主题 | Biology ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000226248400010 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/3571]  |
| 专题 | 海洋研究所_海洋生物技术研发中心 |
| 作者单位 | 1.Rutgers State Univ, Haskin Shellfish Res Lab, Inst Marine & Coastal Sci, Port Norris, NJ 08349 USA 2.Chinese Acad Sci, Expt Marine Biol Lab, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, YP,Guo, XM. Chromosomal rearrangement in Pectinidae revealed by rRNA loci and implications for bivalve evolution[J]. BIOLOGICAL BULLETIN,2004,207(3):247-256. |
| APA | Wang, YP,&Guo, XM.(2004).Chromosomal rearrangement in Pectinidae revealed by rRNA loci and implications for bivalve evolution.BIOLOGICAL BULLETIN,207(3),247-256. |
| MLA | Wang, YP,et al."Chromosomal rearrangement in Pectinidae revealed by rRNA loci and implications for bivalve evolution".BIOLOGICAL BULLETIN 207.3(2004):247-256. |
入库方式： OAI收割
来源：海洋研究所
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