نتایج جستجو برای: homothallic
تعداد نتایج: 256 فیلتر نتایج به سال:
The HO gene promotes interconversion between a and a mating types. As a consequence, homothallic diploid cells are formed by mating between siblings descended from a single crH0 or a HO spore. In order to determine the frequency and pattern of the mating-type switch, we have used a simple technique by which the mating phenotype can be assayed without losing the cell to the mating process itself...
Degenerate PCR and chromosome-walking approaches were used to identify mating-type (MAT) genes and flanking regions from the homothallic (sexually self-fertile) euascomycete fungus Neosartorya fischeri, a close relative of the opportunistic human pathogen Aspergillus fumigatus. Both putative alpha- and high-mobility-group-domain MAT genes were found within the same genome, providing a functiona...
Volvariella volvacea is an important crop in Southeast Asia, but erratic fruiting presents a serious challenge for its production and breeding. Efforts to explain inconsistent fruiting have been complicated by the multinucleate nature, typical lack of clamp connections, and an incompletely identified sexual reproductive system. In this study, we addressed the life cycle of V. volvacea using who...
Cellular slime molds have been classified on the basis of a small number of descriptive criteria such as fruiting body color and morphology, and, in heterothallic species, by assignment to compatible mating groups. However, some isolates which are morphologically classified as conspecific do not fall into a simple mating-type classification; for example some are asexual or homothallic. An incre...
Mutations affecting donor preference during mating type interconversion in Saccharomyces cerevisiae.
Homothallic strains of Saccharomyces cerevisiae can convert mating type from a to alpha or alpha to a as often as every generation, by replacing genetic information specifying one mating type at the expressor locus, MAT, with information specifying the opposite mating type. The cryptic mating type information that is copied and inserted at MAT is contained in either of two loci, HML or HMR. The...
N general, fertile yeasts are classified as being either heterothallic or homo’ thallic. Heterothallic strains exhibit one of two alternate mating types (usually designated as a and a! or + and -) with diploidization occurring between cells of opposite mating type only (e.g. a with a! and + with -) . In homothallic yeasts, on the other hand, restrictive mating systems are not observed and siste...
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