Trichophyton rubrum is an anthropophilic species that is the most frequent etiologic agent of human dermatophytosis throughout the world. No teleomorph has been identified for T. rubrum strains. This study used PCR analysis to confirm the presence of a mating type locus in the genome of Japanese isolates of T. rubrum. To clarify the epidemiological and ecological characteristics of this fungus, mating type sequences were tested for correlation of MAT genotype to mating type. This study examined clinical isolates of T. rubrum that had been obtained from 206 human cases of tinea pedis and tinea unguium in Japan, including those from Fukuoka (29 strains), Gifu (23 strains), Kanazawa (63 strains), and Tokyo (91 strains), along with 10 isolates derived from 10 cases of canine dermatophytosis. PCR detected the presence of MAT1-1 in all of the human and animal isolates. Therefore, all isolates examined were expected to react as (-) type on the mating test and not as (+) type.
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http://dx.doi.org/10.1007/s11046-012-9603-2 | DOI Listing |
Proc Biol Sci
January 2025
Faculty of Applied Information Technology, Nagasaki Institute of Applied Science, Nagasaki, Japan.
External female genital mutilation (EFGM) is a type of traumatic mating in which males damage female genitalia, resulting in the loss of female re-mating ability. This study examined whether sexual conflict underlies EFGM by examining the possible female reproductive costs from the decreased number of matings in spider, . The female typically receives sperm from a male twice during a mating bout.
View Article and Find Full Text PDFSocial vocalizations contain cues that reflect the motivational state of a vocalizing animal. Once perceived, these cues may in turn affect the internal state and behavioral responses of listening animals. Using the CBA/CAJ mouse model of acoustic communication, this study examined acoustic cues that signal intensity in male-female interactions, then compared behavioral responses to intense mating vocal sequences with those from another intense behavioral context, restraint.
View Article and Find Full Text PDFBiomolecules
January 2025
National Research Center "Kurchatov Institute", 123182 Moscow, Russia.
The methylotrophic yeast belongs to the group of homothallic fungi that are able to spontaneously change their mating type by inversion of chromosomal DNA in the MAT locus region. As a result, natural and genetically engineered cultures of these yeasts typically contain a mixture of sexually dimorphic cells that are prone to self-diploidisation and spore formation accompanied by genetic rearrangements. These characteristics pose a significant challenge to the development of genetically stable producers for industrial use.
View Article and Find Full Text PDFSheng Wu Gong Cheng Xue Bao
January 2025
School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China.
(.), an unconventional heterothallic yeast species, is renowned for its high production of tetraacetyl phytosphingosine (TAPS). Due to its excellent performance in TAPS production, this study aimed to construct a genetic operating system of .
View Article and Find Full Text PDFJ Fungi (Basel)
December 2024
The Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
is a species whose sclerotia have been extensively employed in traditional Chinese medicine, which has diuretic, antitumor, anticancer, and immune system enhancement properties. However, prolonged asexual reproduction has resulted in significant homogenization and degeneration of seed sclerotia. In contrast, sexual reproduction has emerged as an effective strategy to address these challenges, with a distinct mating system serving as the foundation for the implementation of sexual breeding.
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