PMID- 8654909 OWN - NLM STAT- MEDLINE DCOM- 19960731 LR - 20220309 IS - 0831-2796 (Print) IS - 0831-2796 (Linking) VI - 38 IP - 6 DP - 1995 Dec TI - Repeated DNA sequences isolated by microdissection. I. Karyotyping of barley (Hordeum vulgare L.). PG - 1082-90 AB - We report on microdissection, cloning and sequence, and Southern and fluorescence in situ hybridization (FISH) analysis of one moderately and one highly amplified repetitive DNA element, pHvMWG2314 and pHvMWG2315, respectively, isolated from barley (Hordeum vulgare L.) chromosome arm 3HL. The pHvMWG2315 sequence hybridizes to all 14 telomeric or subtelomeric regions of the barley chromosomes as determined by FISH. The 50 different hybridization sites that include intercalary signals allow the discrimination of all 14 chromosome arms and the construction of a kariotype of barley. The tandemly repeated subtelomeric element of 331 bp exists in all Triticeae species tested (H. vulgare, Agropyron elongatum, Secale cereale, Triticum tauschii, T. turgidum, and T. aestivum). It is AT rich (66%), exibits 84% sequence homology to subfragments of the D genome inverted question markspecific inverted question mark 1-kb element pAs1 of T. tauscii and 75% homology to interspersed genome-specific DNA sequence pHcKB6 from H. chilence. The repetitive sequence pHvMWG2314 is moderately amplified in barley and highly amplified in hexaploid wheat. The in situ experiments revealed no distinct signals on barley chromosomes, indicating a dispersed character for the sequence. The significance of the results for the identification of chromosomes and chromosome aberrations in FISH experiments are discussed. FAU - Busch, W AU - Busch W AD - Botanisches Institut, Ludwig-Maximilians-Universitat Munchen, Germany. FAU - Martin, R AU - Martin R FAU - Herrmann, R G AU - Herrmann RG FAU - Hohmann, U AU - Hohmann U LA - eng SI - GENBANK/D30736 SI - GENBANK/X85383 SI - GENBANK/X85384 PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Canada TA - Genome JT - Genome JID - 8704544 RN - 0 (DNA, Plant) SB - IM MH - Base Composition MH - Base Sequence MH - Cloning, Molecular MH - DNA, Plant/*genetics/isolation & purification MH - *Genetic Techniques MH - Hordeum/*genetics MH - In Situ Hybridization, Fluorescence MH - Karyotyping/*methods MH - Molecular Sequence Data MH - Repetitive Sequences, Nucleic Acid/*genetics MH - Sequence Analysis, DNA MH - Sequence Homology, Nucleic Acid MH - Triticum/genetics EDAT- 1995/12/01 00:00 MHDA- 1995/12/01 00:01 CRDT- 1995/12/01 00:00 PHST- 1995/12/01 00:00 [pubmed] PHST- 1995/12/01 00:01 [medline] PHST- 1995/12/01 00:00 [entrez] AID - 10.1139/g95-144 [doi] PST - ppublish SO - Genome. 1995 Dec;38(6):1082-90. doi: 10.1139/g95-144.