Amplification and adaptation of centromeric repeats in polyploid switchgrass species
- Department of Horticulture, University of Wisconsin-Madison, Madison WI 53706 USA; Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014 China
- Department of Horticulture, University of Wisconsin-Madison, Madison WI 53706 USA; Department of Plant Biology, Department of Horticulture, Michigan State University, East Lansing MI 48824 USA
- Department of Horticulture, University of Wisconsin-Madison, Madison WI 53706 USA; Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Key Laboratory of Plant Functional Genomics of Ministry of Education, Yangzhou University, Yangzhou 225009 China
- Department of Horticulture, University of Wisconsin-Madison, Madison WI 53706 USA; College of Bioscience and Biotechnology, Beijing Forestry University, Beijing 100083 China
- Department of Horticulture, University of Wisconsin-Madison, Madison WI 53706 USA
- Department of Horticulture, University of Wisconsin-Madison, Madison WI 53706 USA; School of Life Sciences, Jiangsu Normal University, Xuzhou 221116 China
- Department of Horticulture, University of Wisconsin-Madison, Madison WI 53706 USA; Departmento de Biologia, Universidade Federal de Lavras, Lavras MG 37200 Brazil
- Dairy Forage Research Center, Agricultural Research Service, USDA, Madison WI 53706 USA
- Joint Genome Institute, Walnut Creek CA 94598 USA; HudsonAlpha Institute for Biotechnology, Huntsville AL 35806 USA
Centromeres in most higher eukaryotes are composed of long arrays of satellite repeats (Henikoff et al., 2001; Jiang et al., 2003). In addition, centromeres in the same plant or animal species are often dominated by a single satellite repeat family. For example, human centromeres are composed exclusively of the c. 171-bp alpha satellite repeats (Willard & Waye, 1987; Miga et al., 2014). Similarly, each of the five centromeres of the model plant Arabidopsis thaliana (2n = 2x = 10) contains several megabases (Mb) of a 178-bp satellite repeat (Maluszynska & Heslop-Harrison, 1991; Murata et al., 1994; Jackson et al., 1998; Nagaki et al., 2003). Nucleosomes in centromeres are defined by the presence of cenH3 (CENP-A in mammalian species), a centromere-specific H3 variant. The satellite repeats in a single centromere often expand to several megabases and are associated with both cenH3 nucleosomes and pericentromeric H3 nucleosomes (Schueler et al., 2001; Jin et al., 2004; Shibata & Murata, 2004; Zhang et al., 2008). Nevertheless, such satellite repeats are intriguingly restricted to the centromeric regions and do not spread to interstitial or telomeric regions of the chromosomes.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1543997
- Journal Information:
- New Phytologist, Vol. 218, Issue 4; ISSN 0028-646X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
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