Specific b alleles matter in phytopathogenic Ustilago maydis
نویسندگان
چکیده
SPECIFIC b ALLELES MATTER IN PHYTOPATHOGENIC USTILAGO MAYDIS Kavita Burman Aulakh
منابع مشابه
Conservation of the b mating-type gene complex among bipolar and tetrapolar smut fungi.
In the phytopathogenic fungus Ustilago hordei, one locus with two alternate alleles, MAT-1 and MAT-2, controls mating and the establishment of the infectious dikaryon (bipolar mating). In contrast, for U. maydis, these functions are associated with two different gene complexes, called a and b (tetrapolar mating); the a complex has two alternate specificities, and the b gene complex is multialle...
متن کاملThe Gbeta-subunit-encoding gene bpp1 controls cyclic-AMP signaling in Ustilago maydis.
In the phytopathogenic fungus Ustilago maydis, fusion of haploid cells is a prerequisite for infection. This process is controlled by a pheromone-receptor system. The receptors belong to the seven-transmembrane class that are coupled to heterotrimeric G proteins. Of four Galpha subunits in U. maydis, only gpa3 has a function during mating and cyclic AMP (cAMP) signaling. Activation of the cAMP ...
متن کاملIdentification of genes governing filamentous growth and tumor induction by the plant pathogen Ustilago maydis.
Two master regulatory loci, a and b, govern life-cycle transitions of the phytopathogenic fungus Ustilago maydis. Fusion of haploids that differ at both a and b results in production of a filamentous dikaryon, which induces tumors in its host, maize. Here I describe identification of genes distinct from a and b that play roles in these life-cycle transitions. These studies identify three genes,...
متن کاملThe Clp1 protein is required for clamp formation and pathogenic development of Ustilago maydis.
In the phytopathogenic fungus Ustilago maydis, pathogenic development is controlled by a heterodimer of the two homeodomain proteins bE and bW, encoded by the b-mating-type locus. We have identified a b-dependently induced gene, clampless1 (clp1), that is required for the proliferation of dikaryotic filaments in planta. We show that U. maydis hyphae develop structures functionally equivalent to...
متن کاملProteomic analysis of dimorphic transition in the phytopathogenic fungus Ustilago maydis.
In the corn smut fungus Ustilago maydis, the dimorphic transition from budding to filamentous growth is intrinsically associated with the switch from a saprophytic to a pathogenic lifestyle. Both pathogenicity and filament formation are triggered by a heterodimeric homeodomain transcription factor encoded by the b mating type locus. Here, we present a reference map of the proteome of this dimor...
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