PMID- 27391447 OWN - NLM STAT- MEDLINE DCOM- 20170720 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 11 IP - 7 DP - 2016 TI - Intraspecific Polymorphisms of Cytogenetic Markers Mapped on Chromosomes of Triticum polonicum L. PG - e0158883 LID - 10.1371/journal.pone.0158883 [doi] LID - e0158883 AB - Triticum genus encloses several tetraploid species that are used as genetic stocks for expanding the genetic variability of wheat (Triticum aestivum L.). Although the T. aestivum (2n = 6x = 42, AABBDD) and T. durum (2n = 4x = 28, AABB) karyotypes were well examined by chromosome staining, Giemsa C-banding and FISH markers, other tetraploids are still poorly characterized. Here, we established and compared the fluorescence in situ hybridization (FISH) patterns on chromosomes of 20 accessions of T. polonicum species using different repetitive sequences from BAC library of wheat 'Chinese Spring'. The chromosome patterns of Polish wheat were compared to tetraploid (2n = 4x = 28, AABB) Triticum species: T. durum, T. diccocon and T. turanicum, as well. A combination of pTa-86, pTa-535 and pTa-713 probes was the most informative among 6 DNA probes tested. Probe pTa-k374, which is similar to 28S rDNA sequence enabled to distinguish signal size and location differences, as well as rDNA loci elimination. Furthermore, pTa-465 and pTa-k566 probes are helpful for the detection of similar organized chromosomes. The polymorphisms of signals distribution were observed in 2A, 2B, 3B, 5B, 6A and 7B chromosomes. Telomeric region of the short arm of 6B chromosome was the most polymorphic. Our work is novel and contributes to the understanding of T. polonicum genome organization which is essential to develop successful advanced breeding strategies for wheat. Collection and characterization of this germplasm can contribute to the wheat biodiversity safeguard. FAU - Kwiatek, Michal AU - Kwiatek M AUID- ORCID: 0000-0001-9442-3124 AD - Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland. FAU - Majka, Maciej AU - Majka M AD - Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland. FAU - Majka, Joanna AU - Majka J AD - Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland. FAU - Belter, Jolanta AU - Belter J AD - Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland. FAU - Suchowilska, Elzbieta AU - Suchowilska E AD - Department of Plant Breeding and Seed Production, University of Warmia and Mazury in Olsztyn, Pl. Lodzki 3, 10-727 Olsztyn, Poland. FAU - Wachowska, Urszula AU - Wachowska U AD - Department of Entomology, Phytopathology and Molecular Diagnostics, University of Warmia and Mazury in Olsztyn, Pl. Lodzki 3, 10-727 Olsztyn, Poland. FAU - Wiwart, Marian AU - Wiwart M AD - Department of Plant Breeding and Seed Production, University of Warmia and Mazury in Olsztyn, Pl. Lodzki 3, 10-727 Olsztyn, Poland. FAU - Wisniewska, Halina AU - Wisniewska H AD - Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland. LA - eng PT - Journal Article DEP - 20160708 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (DNA, Plant) RN - 0 (DNA, Ribosomal) RN - 0 (Genetic Markers) RN - 0 (RNA, Plant) RN - 0 (RNA, Ribosomal, 28S) SB - IM MH - Chromosomes, Plant/*genetics MH - Cytogenetics MH - DNA, Plant/*genetics MH - DNA, Ribosomal/*genetics MH - Genetic Markers MH - *Polymorphism, Genetic MH - RNA, Plant/genetics MH - RNA, Ribosomal, 28S/genetics MH - Triticum/*genetics PMC - PMC4938433 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2016/07/09 06:00 MHDA- 2017/07/21 06:00 PMCR- 2016/07/08 CRDT- 2016/07/09 06:00 PHST- 2016/04/22 00:00 [received] PHST- 2016/06/23 00:00 [accepted] PHST- 2016/07/09 06:00 [entrez] PHST- 2016/07/09 06:00 [pubmed] PHST- 2017/07/21 06:00 [medline] PHST- 2016/07/08 00:00 [pmc-release] AID - PONE-D-16-16286 [pii] AID - 10.1371/journal.pone.0158883 [doi] PST - epublish SO - PLoS One. 2016 Jul 8;11(7):e0158883. doi: 10.1371/journal.pone.0158883. eCollection 2016.