A Case of "Maternal" Inheritance in Neurospora Crassa.

Biotransformation of Hydrocortisone by Neurospora crassa

The ability of Neurospora crassa FGSC 4335 in the biotransformation of hydrocortisone was investigated. The microorganism produced two major metabolites after incubation with the substrate for seven days. Each microbial product was purified chromatographically and identified on the basis of spectral data. The products were identified as 11?,17?,20?,21-tetrahydroxypregn-4-en-3-one (II) and 11?-h...

Transmission of mitochondrial deoxyribonucleic acid in Neurospora crassa sexual crosses.

Neurospora crassa mitochondrial deoxyribonucleic acid shows strict uniparental inheritance in sexual crosses, with a notable absence of mixtures and recombinant types that appear frequently in heteroplasmons.

Beyond Animals and Plants: Dynamic Maternal Effects in the 1 Fungus Neurospora crassa

Characterization of two new plasmid DNAs found in mitochondria of wild-type Neurospora intermedia strains.

Mitochondria from two Neurospora intermedia strains (P4O5-Labelle and Fiji N6-6) were found to contain plasmid DNAs in addition to the standard mitochondrial DNA species. The plasmid DNAs consist of monomeric circles (4.1-4.3 kbp and 5.2-5.3 kbp for Labelle and Fiji, respectively) and oligomers in which monomers are organized as head-to-tail repeats. DNA-DNA hybridization experiments showed tha...

Beyond animals and plants: dynamic maternal effects in the fungus Neurospora crassa.

Maternal effects are widely documented in animals and plants, but not in fungi or other eukaryotes. A principal cause of maternal effects is asymmetrical parental investment in a zygote, creating greater maternal vs. paternal influence on offspring phenotypes. Asymmetrical investments are not limited to animals and plants, but are also prevalent in fungi and groups including apicomplexans, dino...

Defective production of mitochondrial ribosomes in the poky mutant of Neurospora crassa.

A strain of Neurospora crassa containing a cytoplasmic mutation (poky) affecting mitochondrial function is shown to be deficient in small ribosomal subunits in the mitochondrion during the exponential growth phase. In the stationary growth phase, small subunits are more abundant and are present in mitochondrial ribosomal monomers. This change can be correlated with the return of mitochondrial c...