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A cyto-evolutional study of Campanumoea Blume (Campanulaceae) and a possible pathway for secondary karyotype formation
Zhang, Yun-Feng1; Zhang, Chun-Yong1; Zhang, Ting2; Guan, Hui-Ling3; Yan, Sheng-Qi1
2010-03-01
发表期刊PLANT SYSTEMATICS AND EVOLUTION
卷号285期号:3-4页码:245-257
摘要Campanumoea is a small genus in the family Campanulaceae, with species divided into sections Campanumoea and Cyclocodon. Sixteen accessions from Campanumoea and related genera native to China were used to study their karyotype. The results showed that chromosome characteristics were different between the two sections. For Campanumoea, the karyotypic formula was 2n = 2X = 2m + 12sm + 2st = 16,3A and for Cyclocodon it was 2n = 2X = 6m + 12sm = 18,3B. These data, combined with chromosomal length characteristics, support the restoration of section Cyclocodon as a genus. However, the incorporation of section Campanumoea into Codonopsis requires more evidence. Comparison of chromosomal length and haploid set length revealed that chromosomal segment rearrangements occurred within sections of Campanumoea and between genera, with the difference within sections being greater than that between genera. Therefore, chromosomal segment rearrangements are present in Campanulaceae, implying that chromosomal segment rearrangement plays an important role in the evolution of diversity in Campanulaceae. By comparing the chromosomal characteristic in section Campanumoea and the genus Adenophora, we concluded that the secondary chromosome type such as n = 17, 18 would be derived by autopolyploidization of n = 9, and by chromosome fusion.
关键词Campanumoea Blume (Campanulaceae) Karyotypic Formula Chromosomal Segment Rearrangement Autopolyploidization
资助信息National Natural Science Foundation of China [30660075, 40861019]
学科领域Plant Sciences ; Evolutionary Biology
DOI10.1007/s00606-009-0265-6
收录类别SCI
语种英语
WOS研究方向Plant Sciences ; Evolutionary Biology
WOS类目Plant Sciences ; Evolutionary Biology
WOS记录号WOS:000277344600011
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/11261
专题中国西南野生生物种质资源库
作者单位1.Yunnan Normal Univ, Sch Biol Sci, Kunming 650092, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
3.Yunnan Normal Univ, Coll Energy Sources & Environm, Kunming 650092, Peoples R China
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Zhang, Yun-Feng,Zhang, Chun-Yong,Zhang, Ting,et al. A cyto-evolutional study of Campanumoea Blume (Campanulaceae) and a possible pathway for secondary karyotype formation[J]. PLANT SYSTEMATICS AND EVOLUTION,2010,285(3-4):245-257.
APA Zhang, Yun-Feng,Zhang, Chun-Yong,Zhang, Ting,Guan, Hui-Ling,&Yan, Sheng-Qi.(2010).A cyto-evolutional study of Campanumoea Blume (Campanulaceae) and a possible pathway for secondary karyotype formation.PLANT SYSTEMATICS AND EVOLUTION,285(3-4),245-257.
MLA Zhang, Yun-Feng,et al."A cyto-evolutional study of Campanumoea Blume (Campanulaceae) and a possible pathway for secondary karyotype formation".PLANT SYSTEMATICS AND EVOLUTION 285.3-4(2010):245-257.
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