In this study, white jelly mushrooms that were collected in Tottori Prefecture, Japan, were identified as by phylogenetic analysis of the rDNA-ITS region. Fluorescent microscopic analysis using 4',6-diamidino-2-phenylindole staining to visualize the nuclei in each cell revealed that basidiospores isolated from the fruiting body were monokaryotic. Furthermore, monokaryotic yeasts were germinated from these basidiospores and the resulting crossed mycelium was dikaryotic and bore clamp cells, suggesting a heterothallic lifecycle for this species. Crossing between compatible yeast strains, such as TUFC 101924 and TUFC 101925, that were isolated from the same fruiting body, successfully induced development of the filamentous stage bearing clamp connections after 7 d of incubation on Kagome vegetable juice agar medium. Mating compatibility tests employing 15 basidiospore isolates revealed that this fungus possess a bipolar mating system. The results indicated that is a heterothallic and bipolar mushroom.
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http://dx.doi.org/10.47371/mycosci.2024.05.003 | DOI Listing |
J Fungi (Basel)
December 2024
Mushroom Science Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong 27709, Republic of Korea.
Gene editing using CRISPR/Cas9 is an innovative tool for developing new mushroom strains, offering a promising alternative to traditional breeding methods that are time-consuming and labor-intensive. However, plasmid-based gene editing presents several challenges, including the need for selecting appropriate promoters for Cas9 expression, optimizing codons for the Cas9 gene, the unintended insertion of fragmented plasmid DNA into genomic DNA (gDNA), and regulatory concerns related to genetically modified organisms (GMOs). To address these issues, we utilized a Ribonucleoprotein (RNP) complex consisting of Cas9 and gRNA for gene editing to modify the A mating-type gene of .
View Article and Find Full Text PDFPLoS Biol
December 2024
Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland.
Starvation, which is associated with inactivation of the growth-promoting TOR complex 1 (TORC1), is a strong environmental signal for cell differentiation. In the fission yeast Schizosaccharomyces pombe, nitrogen starvation has distinct physiological consequences depending on the presence of mating partners. In their absence, cells enter quiescence, and TORC1 inactivation prolongs their life.
View Article and Find Full Text PDFACS Synth Biol
December 2024
Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan.
The domesticated silkworm , an essential industrial animal for silk production, has attracted attention as a host for protein production due to its remarkable protein synthesis capability. Here, we applied genetic code expansion (GCE) using a versatile pyrrolysyl-tRNA synthetase (PylRS)/tRNA pair from to ; GCE enables synthetic amino acid incorporation into proteins to give them non-natural functions. Transgenic lines expressing PylRS and its cognate tRNA were generated and cross-mated to obtain their F hybrid.
View Article and Find Full Text PDFJ Dairy Sci
December 2024
Irish Cattle Breeding Federation, Carrigrohane, Ballincollig, Co. Cork, P31 D452, Ireland.
A decision support tool or system is a computerized information system used to support decision-making in a business; one central component to profitable dairy cattle production systems is the appropriate mating of bulls and females. While tools have been described to aid mating decisions between dairy bulls and dairy females, or between beef bulls and beef females, there is a void of such tools that recommend which beef bull to mate to individual dairy females. The objective of the present study was to develop and validate a framework, founded on linear programming, to aid herd-level mating decisions where the bull-female mating is tailored based on complementarity and compatibility of both mates; consideration in the process was given to the genetic merit of both mates for a series of traits as well as the life history of the female herself.
View Article and Find Full Text PDFMycologia
December 2024
Department of Ecology, Environment and Plant Sciences, Stockholm University, Svante Arrhenius v. 20 A, Stockholm SE-114 18, Sweden.
Sexual compatibility in the Basidiomycota is governed by genetic identity at one or two loci, resulting in compatibility systems called bipolar and tetrapolar. The loci are known as and , encoding homeodomain transcription factors and pheromone precursors and receptors, respectively. Bipolarity is known to evolve either by linkage of the two loci or by loss of mating-type determination of either the or the locus.
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