PMID- 23795942 OWN - NLM STAT- MEDLINE DCOM- 20140506 LR - 20130930 IS - 1365-313X (Electronic) IS - 0960-7412 (Linking) VI - 76 IP - 1 DP - 2013 Oct TI - Identification and characterization of functional centromeres of the common bean. PG - 47-60 LID - 10.1111/tpj.12269 [doi] AB - In higher eukaryotes, centromeres are typically composed of megabase-sized arrays of satellite repeats that evolve rapidly and homogenize within a species' genome. Despite the importance of centromeres, our knowledge is limited to a few model species. We conducted a comprehensive analysis of common bean (Phaseolus vulgaris) centromeric satellite DNA using genomic data, fluorescence in situ hybridization (FISH), immunofluorescence and chromatin immunoprecipitation (ChIP). Two unrelated centromere-specific satellite repeats, CentPv1 and CentPv2, and the common bean centromere-specific histone H3 (PvCENH3) were identified. FISH showed that CentPv1 and CentPv2 are predominantly located at subsets of eight and three centromeres, respectively. Immunofluorescence- and ChIP-based assays demonstrated the functional significance of CentPv1 and CentPv2 at centromeres. Genomic analysis revealed several interesting features of CentPv1 and CentPv2: (i) CentPv1 is organized into an higher-order repeat structure, named Nazca, of 528 bp, whereas CentPv2 is composed of tandemly organized monomers; (ii) CentPv1 and CentPv2 have undergone chromosome-specific homogenization; and (iii) CentPv1 and CentPv2 are not likely to be commingled in the genome. These findings suggest that two distinct sets of centromere sequences have evolved independently within the common bean genome, and provide insight into centromere satellite evolution. CI - (c) 2013 The Authors The Plant Journal (c) 2013 John Wiley & Sons Ltd. FAU - Iwata, Aiko AU - Iwata A AD - Center for Applied Genetic Technologies and Institute for Plant Breeding Genetics, and Genomics, University of Georgia, Athens, GA, 30602, USA. FAU - Tek, Ahmet L AU - Tek AL FAU - Richard, Manon M S AU - Richard MM FAU - Abernathy, Brian AU - Abernathy B FAU - Fonseca, Artur AU - Fonseca A FAU - Schmutz, Jeremy AU - Schmutz J FAU - Chen, Nicolas W G AU - Chen NW FAU - Thareau, Vincent AU - Thareau V FAU - Magdelenat, Ghislaine AU - Magdelenat G FAU - Li, Yupeng AU - Li Y FAU - Murata, Minoru AU - Murata M FAU - Pedrosa-Harand, Andrea AU - Pedrosa-Harand A FAU - Geffroy, Valerie AU - Geffroy V FAU - Nagaki, Kiyotaka AU - Nagaki K FAU - Jackson, Scott A AU - Jackson SA LA - eng SI - GENBANK/KC491791 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130805 PL - England TA - Plant J JT - The Plant journal : for cell and molecular biology JID - 9207397 RN - 0 (DNA, Complementary) RN - 0 (DNA, Plant) RN - 0 (Histones) RN - 0 (Plant Proteins) SB - IM MH - Base Sequence MH - *Centromere/genetics/metabolism MH - DNA, Complementary/chemistry/genetics MH - DNA, Plant/chemistry/genetics MH - *Evolution, Molecular MH - *Fabaceae/genetics/metabolism MH - Histones/genetics MH - In Situ Hybridization, Fluorescence MH - Microsatellite Repeats MH - Molecular Sequence Data MH - Plant Proteins/genetics/metabolism MH - Species Specificity OTO - NOTNLM OT - Phaseolus vulgaris OT - centromere OT - centromere evolution OT - centromere-specific histone H3 OT - chromosome-specific homogenization OT - higher-order repeat structure OT - satellite repeats EDAT- 2013/06/26 06:00 MHDA- 2014/05/07 06:00 CRDT- 2013/06/26 06:00 PHST- 2013/03/02 00:00 [received] PHST- 2013/06/15 00:00 [revised] PHST- 2013/06/20 00:00 [accepted] PHST- 2013/06/26 06:00 [entrez] PHST- 2013/06/26 06:00 [pubmed] PHST- 2014/05/07 06:00 [medline] AID - 10.1111/tpj.12269 [doi] PST - ppublish SO - Plant J. 2013 Oct;76(1):47-60. doi: 10.1111/tpj.12269. Epub 2013 Aug 5.