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Comparison of the structural characteristics of chromosome VI in Saccharomyces sensu stricto: The divergence, species‐dependent features and uniqueness of saké yeasts
Author(s) -
Nakazato Atsumi,
Kadokura Toshimori,
Amano Makoto,
Harayama Tadashi,
Murakami Yasufumi,
Takeda Masahisa,
Ohkuma Moriya,
Kudo Toshiaki,
Kaneko Takichi
Publication year - 1998
Publication title -
yeast
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.923
H-Index - 102
eISSN - 1097-0061
pISSN - 0749-503X
DOI - 10.1002/(sici)1097-0061(19980615)14:8<723::aid-yea266>3.0.co;2-t
Subject(s) - biology , chromosome , genetics , saccharomyces , saccharomyces cerevisiae , yeast , gene
Previous studies have revealed that chromosome VI of saké yeasts is much larger than that of the other strains of Saccharomyces cerevisiae . Southern analysis using segments of chromosome VI of a laboratory strain as probes suggested that the nucleotide sequence of a major portion of this chromosome is conserved, but considerable diversity was found in the distal parts in the other strains. Physical maps also indicated that differences in length of chromosome VI were mainly due to differences in its ends. Not I was found to generate 9 kb and/or 16 kb fragments from the left telomere of chromosome VI in most saké yeasts, but no fragment in the case of AB972. Sfi I produced one or two 30–50 kb fragments from the right end of this chromosome in all saké yeasts tested, but produced a 20 kb fragment in the case of AB972. All S. cerevisiae strains not employed in saké brewing were the same as AB972 in these respects. S. paradoxus had one Not I site in chromosome VI, while S. bayanus had two, one of which is possibly common to both species. The Sfi I site mentioned above was present in chromosome VI of all species, while that of S. bayanus and S. paradoxus each had a second site distinct from the other. Chromosome VI of S. pastorianus was not distinguishable from that of S. bayanus . © 1998 John Wiley & Sons, Ltd.