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学科主题: Fisheries; Marine & Freshwater Biology
题名: Molecular analysis of silver crucian carp (Carassius auratus gibelio Bloch) clones by SCAR markers
作者: Li Zhou ; Yang Wang ; Jian-Fang Gui
通讯作者: Gui, JF, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: gynogenesis ; clones ; Carassius auratus gibelio ; RAPD ; SCAR marker
刊名: AQUACULTURE
发表日期: 2001
卷: 201, 期:3-4, 页:219-228
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
摘要: Random amplified polymorphic DNA (RAPD) molecular markers specific for one, two or three clones have been identified from five gynogenetic clones of silver crucian carp (Carassius auratus gibelio Bloch) using RAPD markers developed earlier. In this study, three RAPD markers (RA1-PA, RA2-EF and RA4-D) produced by Opj-1, and two RAPD DNA fragments (RA3-PAD and RA5-D) produced by Opj-7, were selected for molecular cloning and sequencing. Sequence data indicated that there were identical 801-bp nucleotide sequences in the shared marker RA1-PA cloned respectively from clones P and A, and the shared marker RA2-EF (which was cloned from clones E and F), were also of identical 958-by nucleotide sequences. The nucleotide sequences of the shared marker RA3-PAD fragments were also similar for 1181 by among clones P, A and D. The specific fragment RA4-D was composed of 628 bp, and the fragment RA5-D from clone D contained 385 nucleotides. According to the nucleotide sequences, we designed and synthesized five pairs of sequence characterized amplified regions (SCAR) primers to identify the specific fragments in these gynogenetic clones of silver crucian carp. Only individuals from clones P and A amplified a specific band using a pair of SCI-PA primers synthesized according to the marker RA1-PA sequences, whereas no products were detected in individuals from clones D, E and F. The PCR products amplified using SC2-EF and SC3-PAD primers were as expected. Furthermore, the pair of SC4-D primers amplified specific bands only in individuals from clone D, although weak bands could be produced in all individuals of the five clones when lower annealing temperatures were used. However, an additional pair of SC5-D primers designed from the RA5-D marker sequences could amplify a DNA band in individuals from clones P, A and D, and the same weak band was produced in clone E, whereas no products were detected in individuals from clone F. Searches in GenBank revealed that the 385-bp DNA fragment from RA5-D was homologous to the 5' end of gonadotropin I beta subunit 2 gene and growth hormone gene. No homologous sequences were found for other markers in GenBank. The SCAR markers identified in this study will offer a powerful, easy, and rapid method for discrimination of different clones and for genetic analyses that examine their origins and unique reproductive modes in crucian carp. Furthermore, they will likely benefit future selective breeding programs as reliable and reproducible molecular markers. (C) 2001 Elsevier Science B.V. All rights reserved.
WOS记录号: WOS:000171380100005
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9930
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Li Zhou; Yang Wang; Jian-Fang Gui.Molecular analysis of silver crucian carp (Carassius auratus gibelio Bloch) clones by SCAR markers,AQUACULTURE,2001,201(3-4):219-228
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