PMID- 34475879 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210904 IS - 1664-462X (Print) IS - 1664-462X (Electronic) IS - 1664-462X (Linking) VI - 12 DP - 2021 TI - The Evolutionary Dynamics of Repetitive DNA and Its Impact on the Genome Diversification in the Genus Sorghum. PG - 729734 LID - 10.3389/fpls.2021.729734 [doi] LID - 729734 AB - Polyploidization is an evolutionary event leading to structural changes of the genome(s), particularly allopolyploidization, which combines different genomes of distinct species. The tetraploid species, Sorghum halepense, is assumed an allopolyploid species formed by hybridization between diploid S. bicolor and S. propinquum. The repeat profiles of S. bicolor, S. halepense, and their relatives were compared to elucidate the repeats' role in shaping their genomes. The repeat frequencies and profiles of the three diploid accessions (S. bicolor, S. bicolor ssp. verticilliflorum, and S. bicolor var. technicum) and two tetraploid accessions (S. halepense) are similar. However, the polymorphic distribution of the subtelomeric satellites preferentially enriched in the tetraploid S. halepense indicates drastic genome rearrangements after the allopolyploidization event. Verified by CENH3 chromatin immunoprecipitation (ChIP)-sequencing and fluorescence in situ hybridization (FISH) analysis the centromeres of S. bicolor are mainly composed of the abundant satellite SorSat137 (CEN38) and diverse CRMs, Athila of Ty3_gypsy and Ty1_copia-SIRE long terminal repeat (LTR) retroelements. A similar centromere composition was found in S. halepense. The potential contribution of S. bicolor in the formation of tetraploid S. halepense is discussed. CI - Copyright (c) 2021 Kuo, Ishii, Fuchs, Hsieh, Houben and Lin. FAU - Kuo, Yi-Tzu AU - Kuo YT AD - Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany. AD - Department of Agronomy, National Taiwan University, Taipei, Taiwan. FAU - Ishii, Takayoshi AU - Ishii T AD - Arid Land Research Center, Tottori University, Tottori, Japan. FAU - Fuchs, Jorg AU - Fuchs J AD - Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany. FAU - Hsieh, Wei-Hsun AU - Hsieh WH AD - Department of Agronomy, National Taiwan University, Taipei, Taiwan. FAU - Houben, Andreas AU - Houben A AD - Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany. FAU - Lin, Yann-Rong AU - Lin YR AD - Department of Agronomy, National Taiwan University, Taipei, Taiwan. AD - World Vegetable Center, Tainan, Taiwan. LA - eng PT - Journal Article DEP - 20210812 PL - Switzerland TA - Front Plant Sci JT - Frontiers in plant science JID - 101568200 PMC - PMC8407070 OTO - NOTNLM OT - CENH3 OT - Sorghum OT - centromere OT - dryland crop OT - genome evolution OT - long terminal repeat (LTR) OT - satellite DNA COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/09/04 06:00 MHDA- 2021/09/04 06:01 PMCR- 2021/01/01 CRDT- 2021/09/03 06:49 PHST- 2021/06/23 00:00 [received] PHST- 2021/07/23 00:00 [accepted] PHST- 2021/09/03 06:49 [entrez] PHST- 2021/09/04 06:00 [pubmed] PHST- 2021/09/04 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fpls.2021.729734 [doi] PST - epublish SO - Front Plant Sci. 2021 Aug 12;12:729734. doi: 10.3389/fpls.2021.729734. eCollection 2021.