PMID- 18791231 OWN - NLM STAT- MEDLINE DCOM- 20090206 LR - 20221207 IS - 0016-6731 (Print) IS - 0016-6731 (Linking) VI - 180 IP - 3 DP - 2008 Nov TI - Cross-species bacterial artificial chromosome-fluorescence in situ hybridization painting of the tomato and potato chromosome 6 reveals undescribed chromosomal rearrangements. PG - 1319-28 LID - 10.1534/genetics.108.093211 [doi] AB - Ongoing genomics projects of tomato (Solanum lycopersicum) and potato (S. tuberosum) are providing unique tools for comparative mapping studies in Solanaceae. At the chromosomal level, bacterial artificial chromosomes (BACs) can be positioned on pachytene complements by fluorescence in situ hybridization (FISH) on homeologous chromosomes of related species. Here we present results of such a cross-species multicolor cytogenetic mapping of tomato BACs on potato chromosomes 6 and vice versa. The experiments were performed under low hybridization stringency, while blocking with Cot-100 was essential in suppressing excessive hybridization of repeat signals in both within-species FISH and cross-species FISH of tomato BACs. In the short arm we detected a large paracentric inversion that covers the whole euchromatin part with breakpoints close to the telomeric heterochromatin and at the border of the short arm pericentromere. The long arm BACs revealed no deviation in the colinearity between tomato and potato. Further comparison between tomato cultivars Cherry VFNT and Heinz 1706 revealed colinearity of the tested tomato BACs, whereas one of the six potato clones (RH98-856-18) showed minor putative rearrangements within the inversion. Our results present cross-species multicolor BAC-FISH as a unique tool for comparative genetic studies across Solanum species. FAU - Tang, Xiaomin AU - Tang X AD - Wageningen-UR Plant Breeding, PB Wageningen, The Netherlands. FAU - Szinay, Dora AU - Szinay D FAU - Lang, Chunting AU - Lang C FAU - Ramanna, Munikote S AU - Ramanna MS FAU - van der Vossen, Edwin A G AU - van der Vossen EA FAU - Datema, Erwin AU - Datema E FAU - Lankhorst, Rene Klein AU - Lankhorst RK FAU - de Boer, Jan AU - de Boer J FAU - Peters, Sander A AU - Peters SA FAU - Bachem, Christian AU - Bachem C FAU - Stiekema, Willem AU - Stiekema W FAU - Visser, Richard G F AU - Visser RG FAU - de Jong, Hans AU - de Jong H FAU - Bai, Yuling AU - Bai Y LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080914 PL - United States TA - Genetics JT - Genetics JID - 0374636 RN - 0 (DNA, Plant) RN - 0 (Genetic Markers) SB - IM MH - *Chromosome Aberrations MH - *Chromosomes, Artificial, Bacterial MH - Chromosomes, Plant/*genetics MH - DNA, Plant/genetics MH - Genetic Markers MH - Genome, Plant MH - In Situ Hybridization, Fluorescence/*methods MH - Solanum lycopersicum/*genetics MH - Physical Chromosome Mapping/*methods MH - Solanum tuberosum/*genetics MH - Species Specificity PMC - PMC2581937 EDAT- 2008/09/16 09:00 MHDA- 2009/02/07 09:00 PMCR- 2009/02/01 CRDT- 2008/09/16 09:00 PHST- 2008/09/16 09:00 [pubmed] PHST- 2009/02/07 09:00 [medline] PHST- 2008/09/16 09:00 [entrez] PHST- 2009/02/01 00:00 [pmc-release] AID - genetics.108.093211 [pii] AID - gen18031319 [pii] AID - 10.1534/genetics.108.093211 [doi] PST - ppublish SO - Genetics. 2008 Nov;180(3):1319-28. doi: 10.1534/genetics.108.093211. Epub 2008 Sep 14.