Arid
DOI10.1080/00087114.2018.1469815
Report of chromosome number and karyotype asymmetry in Schizopetalon Sims. and related genera from the South American tribe Schizopetalae (Brassicaceae)
Toro-Nunez, Oscar; Leiva-Salcedo, Alan; Fernandez-Alarcon, Naomi; Ruiz-Lozano, Andrea; Baeza, Carlos M.; Ruiz-Ponce, Eduardo
通讯作者Toro-Nunez, Oscar
来源期刊CARYOLOGIA
ISSN0008-7114
EISSN2165-5391
出版年2018
卷号71期号:4页码:315-321
英文摘要

Schizopetalae is one of the representative South American tribes of Brassicaceae, which has remained poorly studied for cytological data. With a single report existing, no additional cytological information is known for the rest of the species and genera of this tribe (Atacama, Mathewsia and Schizopetalon). The present study reports the chromosome number and karyotype asymmetry for five species of Schizopetalon, two for Mathewsia and the only species of the monotypic genus Atacama. While a constant 2n = 18 is confirmed in all analysed samples, larger interchromosomal asymmetry levels were found in Schizopetalon than Atacama and Mathewsia. Both results suggest different processes of fixation and recombination in chromosome architecture among genera, probably associated to life history strategies maintaining genetic diversity under extreme and unpredicted environmental conditions. The present study represents the first report of chromosome number in any South American Brassicaceae in the last 30 years, revealing the need of more cytological studies to contextualize the diversification of Schizopetalae and other closely related tribes.


英文关键词Schizopetalae Brassicaceae Atacama Desert chromosome number interchromosomal asymmetry
类型Article
语种英语
国家Chile
收录类别SCI-E
WOS记录号WOS:000451826900005
WOS关键词ATACAMA DESERT ; GENOME SIZE ; EVOLUTION ; HYBRIDIZATION ; DIVERSITY
WOS类目Plant Sciences ; Genetics & Heredity
WOS研究方向Plant Sciences ; Genetics & Heredity
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208311
作者单位Univ Concepcion, Dept Bot, Fac Ciencias Nat & Oceanog, Concepcion, Chile
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Toro-Nunez, Oscar,Leiva-Salcedo, Alan,Fernandez-Alarcon, Naomi,et al. Report of chromosome number and karyotype asymmetry in Schizopetalon Sims. and related genera from the South American tribe Schizopetalae (Brassicaceae)[J],2018,71(4):315-321.
APA Toro-Nunez, Oscar,Leiva-Salcedo, Alan,Fernandez-Alarcon, Naomi,Ruiz-Lozano, Andrea,Baeza, Carlos M.,&Ruiz-Ponce, Eduardo.(2018).Report of chromosome number and karyotype asymmetry in Schizopetalon Sims. and related genera from the South American tribe Schizopetalae (Brassicaceae).CARYOLOGIA,71(4),315-321.
MLA Toro-Nunez, Oscar,et al."Report of chromosome number and karyotype asymmetry in Schizopetalon Sims. and related genera from the South American tribe Schizopetalae (Brassicaceae)".CARYOLOGIA 71.4(2018):315-321.
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