Investigation of mitochondrial transmission in selected matings between homokaryons from commercial and wild-collected isolates of Agaricus bisporus (=Agaricus brunnescens)
Article Abstract:
The pattern of mitochondrial (mt) DNA transmission in Agaricus bisporus was investigated using 15 homokaryons of commercial and wild-collected strains carrying four different mt genotypes in laboratory matings. Analysis of the mt restriction fragment length polymorphism patterns showed that for most of the individual pairings, all heterokaryons had the same mt genotype. Genetic recombination was a rare event, and in cases where biparental transmission was observed, there was a preference for one mt genotype. The results indicate thata nonrandom mechanism is involved in the biased mt transmission.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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The Agaricus bisporus pruA gene encodes a cytosolic delta(super 1)-pyrroline-5-carboxylate dehydrogenase which is expressed in fruit bodies but not in gill tissue
Article Abstract:
The Agaricus bisporus proline utilization (pruA) gene encodes a cytosolic polypeptide, delta(super 1)-pyrroline-5-carboxylate dehydrogenase, which contains 546 amino acids. The dehydrogenase is evenly distributed in the mushroom, but is absent in the gills and mycelium grown on sterilized compost. Cells using ammonia or proline as the nitrogen source contain a higher amount of pruA mRNA than those using glutamate. The degradation of proteins and ammonium secretion by A. bisporus is unaffected by ammonia and glucose.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1997
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Mitochondrial haplotype influences mycelial growth of Agaricus bisporus heterokaryons
Article Abstract:
Microbiological research shows that mitochondrial haplotype affects the growth of fungus Agaricus bisporus, otherwise known as the common button mushroom. Agaricus bisporus heterokaryons from desert and coastal land in California were used in control experiments with different nuclear genome constituents. Mycelial growth rates according to genetic variation are shown for the temperatures 18, 22 and 26 degrees centigrade.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1997
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