PMID- 7859561 OWN - NLM STAT- MEDLINE DCOM- 19950323 LR - 20190830 IS - 0009-5915 (Print) IS - 0009-5915 (Linking) VI - 103 IP - 6 DP - 1994 Oct TI - Visualization of mitotic chromosomes in filamentous fungi by fluorescence staining and fluorescence in situ hybridization. PG - 408-13 AB - Mitotic chromosomes of the plant pathogenic filamentous fungi Botrytis cinerea and Alternaria alternata were observed. Chromosomes prepared by the germ tube burst method were stained with the fluorescent dye 4',6-diamidino-2-phenylindole (DAPI) to yield figures with good resolution. Using this method, component chromosomes were clearly distinguished and the chromosome number could be determined. Fluorescence in situ hybridization (FISH) was also successfully applied to the specimens, revealing one ribosomal RNA gene cluster, or nucleolus organizer region (NOR) in the genome of each fungus. A long attenuated chromatid thread expanding from a condensed metaphase chromosome, which had been called a thread-like structure in B. cinerea, was proved to be an NOR. This is the first report of the successful application of FISH to the chromosomes of filamentous fungi. FAU - Taga, M AU - Taga M AD - College of General Education, Okayama University, Japan. FAU - Murata, M AU - Murata M LA - eng PT - Journal Article PL - Austria TA - Chromosoma JT - Chromosoma JID - 2985138R RN - 0 (DNA, Fungal) RN - 0 (DNA, Ribosomal) RN - 0 (Fluorescent Dyes) RN - 0 (Indoles) RN - 47165-04-8 (DAPI) SB - IM MH - Alternaria/*ultrastructure MH - *Chromosomes, Fungal MH - DNA, Fungal/analysis MH - DNA, Ribosomal/analysis MH - Fluorescent Dyes MH - In Situ Hybridization, Fluorescence/*methods MH - Indoles MH - Karyotyping/methods MH - Mitosis MH - Mitosporic Fungi/*ultrastructure MH - Nucleolus Organizer Region/ultrastructure EDAT- 1994/10/01 00:00 MHDA- 1994/10/01 00:01 CRDT- 1994/10/01 00:00 PHST- 1994/10/01 00:00 [pubmed] PHST- 1994/10/01 00:01 [medline] PHST- 1994/10/01 00:00 [entrez] AID - 10.1007/BF00362285 [doi] PST - ppublish SO - Chromosoma. 1994 Oct;103(6):408-13. doi: 10.1007/BF00362285.