Global ETD Search
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Showing 1 to 12 of 12 for “"Ustilago maydis"”.
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Recombinant b alleles of Ustilago maydis
The fungal plant pathogen Ustilago maydis has a multiallelic sexual incompatibility system governed by an estimated 25 alleles at the b locus. Haploid strains must have different b alleles in order to be sexually compatible and pathogenic. Existing sequence data from several b alleles show a …
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Die frühe Infektionsphase von Ustilago maydis
The fungus Ustilago maydis is the causative agent of corn smut disease. Prerequisite for successful infection is the fusion of two compatible haploid sporidia and formation of a dikaryon. This process is controlled by the two mating type loci a and b. The a-locus encodes a biallelic …
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Zelluläre Rolle und molekulare Grundlagen des Endosomentransports in Ustilago maydis
… Wachstums im phytopathogenen Basidiomycet Ustilago maydis. Zunächst wurde die zelluläre Rolle des t-SNAREs Yup1 analysiert. Ein temperatursensitiver Defekt im yup1-Gen hatte zu Störungen in der Zelltrennung und im polaren Wachstum von Sporidien geführt. Mutante Zellen bildeten dabei lange …
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Isolierung und Analyse haploider Ustilago maydis Stämme, die ein b-abhängiges Expressionsmuster zeigen
Ustilago maydis ist der Erreger des Maisbeulenbrands. Vorraussetzung für eine erfolgreiche Infektion sind Fusion zweier kompatibler, haploider Zellen und die folgende Ausbildung eines dikaryotischen Filaments. Diese Prozesse werden durch die beiden Paarungstyploci a und b kontrolliert. Der a-Locus …
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The effects of endophytic Fusarium verticillioides on the interactions of maize and its fungal pathogen Ustilago maydis.
… (Sacc.) Nirenberg, the corn smut pathogen, Ustilago maydis DC (Corda) and maize, our studies suggest that endophytes could play important ecological roles for host defense and their impact needs to be appreciated when studying plant interactions with other organisms occurring in the same …
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Isolation and analysis of a corprinus cinereus DNA fragment showing homology to a fimbrial cDNA from ustilago violacea
… and 830/0 homology to the 188 rRNA sequence of Ustilago maydis. This sequence was found adjacent to a region of adenine-thymine base pairs presumed to represent the polyadenylation sequence of the fimbrial transcript. The size and extent of homology is sufficient to account for the hybridization …
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Characterisation of phytoalexin accumulation in maize inoculated with Cercospora zeina, the causal organism of grey leaf spot disease
… nematodes, insect pests and abiotic stresses; Ustilago maydis, Phytophthora cinnamomi, Fusarium moniliforme, Colletotrichum graminicola, Sporisorium reilianum, Meloidogyne incognita, Ostrinia nubilalis, waterlogging and drought stress. Finally promoter region analysis showed similar cis-acting …
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Mechanisms underlying genome maintenance and tumour suppression by BRCA2
… organisms such as Caenorhabditis elegans or Ustilago maydis contain only one BRC repeat. By contrast, all known vertebrate BRCA2 orthologues contain 8 BRC repeats whose sequence as well as spacing is conserved. The functional significance of the conserved sequence and spacing of vertebrate …
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Molekularsystematische Untersuchungen an Vertretern der pflanzenparasitischen Gattung Exobasidium (Basidiomycota)
… Entyloma spp.) bzw. Ustilaginales (Ustilago maydis). Analysen der 18S rDNA und ITS-Region ausgewählter Stämme bestätigten dies. Für phylogenetische Analysen der Gattung Exobasidium wurden Sequenzen der Domäne I der 26S rDNA ausgewählter Stämme untereinander und mit GENBANK-Einträgen …
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The Evolution of Symbiosis in Communities
All organisms host a menagerie of symbionts. While harmful pathogens have historically held the attention of researchers, recent technological advances have revealed a cornucopia of benign, and even beneficial, symbionts. Observations that most organisms are party to a wide variety of harmless …