NDLI: Identification and diversity of functional centromere satellites in the wild rice species Oryza brachyantha

Content Provider	Springer Nature Link
Author	Yi, Chuandeng Zhang, Wenli Dai, Xibin Li, Xing Gong, Zhiyun Zhou, Yong Liang, Guohua Gu, Minghong
Copyright Year	2013
Abstract	The centromere is a key chromosomal component for sister chromatid cohesion and is the site for kinetochore assembly and spindle fiber attachment, allowing each sister chromatid to faithfully segregate to each daughter cell during cell division. It is not clear what types of sequences act as functional centromeres and how centromere sequences are organized in Oryza brachyantha, an FF genome species. In this study, we found that the three classes of centromere-specific CentO-F satellites (CentO-F1, CentO-F2, and CentO-F3) in O. brachyantha share no homology with the CentO satellites in Oryza sativa. The three classes of CentO-F satellites are all located within the chromosomal regions to which the spindle fibers attach and are characterized by megabase tandem arrays that are flanked by centromere-specific retrotransposons, CRR-F, in the O. brachyantha centromeres. Although these CentO-F satellites are quantitatively variable among 12 O. brachyantha centromeres, immunostaining with an antibody specific to CENH3 indicates that they are colocated with CENH3 in functional centromere regions. Our results demonstrate that the three classes of CentO-F satellites may be the major components of functional centromeres in O. brachyantha.
Starting Page	725
Ending Page	737
Page Count	13
File Format	PDF
ISSN	09673849
Journal	Chromosome Research
Volume Number	21
Issue Number	8
e-ISSN	15736849
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-09-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	centromere Oryza brachyantha satellite DNA repetitive DNA Cell Biology Human Genetics Animal Genetics and Genomics Plant Genetics & Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics

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