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题名: Genomic in situ hybridization identifies genome donors of Camellia reticulata (Theaceae)
作者: Liu, Li-Qin1, 2; Gu, Zhi-Jian1
刊名: PLANT SCIENCE
关键词: Camellia reticulata ; C. pitardii ; C. saluenensis ; Genomic in situ hybridization (GISH) ; Genome donors
英文摘要: Camellia reticulata (Theaceae genus Camellia) is a world-famous, ornamental flowering plant. More interestingly, it has a polyploid series varying from 2n = 2x = 30, 2n = 4x = 60 to 2n = 6x = 90, with a basic chromosome number of x = 15. The hypothetic allopolyploid origin and parental genomes of these polyploid types remains unknown. Genomic in situ hybridization (GISH) was used to study the genome organization and evolution of C. reticulata. Total genomic DNA from closely-related diploid species (C pitardii and C saluenensis), with the chromosome number 2n = 2x = 30, were labeled and hybridized in the presence of blocking DNA onto metaphase spreads of C reticulata. The C pitartii probe painted part of the tetraploid and hexaploid C reticulata genomes, whereas the C saluenensis probe delineated part of the hexaploid C reticulata genome. The results provide compelling evidence for the allopolyploid origin of C. reticultata genomes and demonstrate that 1) the diploid C. reticultata, C. pitardii and C. saluenensis are the progenitors of polyploid C reticultata, 2) hybridization between diploid C reticultata and diploid C pitardii gave birth to allotetraploid C. reticulata, and 3) subsequent hybridization between allotetraploid C. reticulata and diploid C. saluenensis formed the allohexaploid C. reticulata. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
出版日期: 2011-03-01
卷号: 180, 期号:3, 页码:554-559
DOI标识: 10.1016/j.plantsci.2010.12.006
语种: 英语
ISSN号: 0168-9452
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/5307
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Liu, LQ; Gu, ZJ.Genomic in situ hybridization identifies genome donors of Camellia reticulata (Theaceae),PLANT SCIENCE,2011,180(3):554-559
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