PMID- 26865698 OWN - NLM STAT- MEDLINE DCOM- 20171116 LR - 20220408 IS - 2160-1836 (Electronic) IS - 2160-1836 (Linking) VI - 6 IP - 4 DP - 2016 Apr 7 TI - Fluorescence In Situ Hybridization (FISH)-Based Karyotyping Reveals Rapid Evolution of Centromeric and Subtelomeric Repeats in Common Bean (Phaseolus vulgaris) and Relatives. PG - 1013-22 LID - 10.1534/g3.115.024984 [doi] AB - Fluorescence in situ hybridization (FISH)-based karyotyping is a powerful cytogenetics tool to study chromosome organization, behavior, and chromosome evolution. Here, we developed a FISH-based karyotyping system using a probe mixture comprised of centromeric and subtelomeric satellite repeats, 5S rDNA, and chromosome-specific BAC clones in common bean, which enables one to unambiguously distinguish all 11 chromosome pairs. Furthermore, we applied the karyotyping system to several wild relatives and landraces of common bean from two distinct gene pools, as well as other related Phaseolus species, to investigate repeat evolution in the genus Phaseolus Comparison of karyotype maps within common bean indicates that chromosomal distribution of the centromeric and subtelomeric satellite repeats is stable, whereas the copy number of the repeats was variable, indicating rapid amplification/reduction of the repeats in specific genomic regions. In Phaseolus species that diverged approximately 2-4 million yr ago, copy numbers of centromeric repeats were largely reduced or diverged, and chromosomal distributions have changed, suggesting rapid evolution of centromeric repeats. We also detected variation in the distribution pattern of subtelomeric repeats in Phaseolus species. The FISH-based karyotyping system revealed that satellite repeats are actively and rapidly evolving, forming genomic features unique to individual common bean accessions and Phaseolus species. CI - Copyright (c) 2016 Iwata-Otsubo et al. FAU - Iwata-Otsubo, Aiko AU - Iwata-Otsubo A AUID- ORCID: 0000-0001-9378-3961 AD - Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia 30602. FAU - Radke, Brittany AU - Radke B AD - Department of Agronomy, Purdue University, West Lafayette, Indiana 47907. FAU - Findley, Seth AU - Findley S AD - Division of Plant Sciences, National Center for Soybean Biotechnology, University of Missouri, Columbia, Missouri 65211. FAU - Abernathy, Brian AU - Abernathy B AD - Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia 30602. FAU - Vallejos, C Eduardo AU - Vallejos CE AD - Department of Horticultural Sciences, University of Florida, Gainesville, Florida 32611. FAU - Jackson, Scott A AU - Jackson SA AD - Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia 30602 sjackson@uga.edu. LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20160407 PL - England TA - G3 (Bethesda) JT - G3 (Bethesda, Md.) JID - 101566598 RN - 0 (DNA, Ribosomal) SB - IM MH - Base Sequence MH - Centromere/*genetics MH - DNA, Ribosomal/genetics MH - Evolution, Molecular MH - Genes, Plant MH - Genetic Variation MH - *In Situ Hybridization, Fluorescence MH - Karyotype MH - *Karyotyping MH - Phaseolus/classification/*genetics MH - Phylogeny MH - *Repetitive Sequences, Nucleic Acid MH - Species Specificity PMC - PMC4825637 OTO - NOTNLM OT - chromosome evolution OT - common bean OT - fluorescence in situ hybridization OT - karyotyping OT - satellite repeats EDAT- 2016/02/13 06:00 MHDA- 2017/11/29 06:00 PMCR- 2016/02/09 CRDT- 2016/02/12 06:00 PHST- 2016/02/12 06:00 [entrez] PHST- 2016/02/13 06:00 [pubmed] PHST- 2017/11/29 06:00 [medline] PHST- 2016/02/09 00:00 [pmc-release] AID - g3.115.024984 [pii] AID - GGG_024984 [pii] AID - 10.1534/g3.115.024984 [doi] PST - epublish SO - G3 (Bethesda). 2016 Apr 7;6(4):1013-22. doi: 10.1534/g3.115.024984.