A Petalless Flower Caused by a Microbotryum violaceum Mutant

2012 ◽  
Vol 173 (5) ◽  
pp. 464-473 ◽  
Author(s):  
Naoko Fujita ◽  
Wataru Aonuma ◽  
Yuji Shimizu ◽  
Kahori Yamanaka ◽  
Aiko Hirata ◽  
...  
Keyword(s):  
Microbotryum Violaceum

scholarly journals Correlation of Haplotypes of a Fungal Plant Pathogen with their Respective Host Species of Origin

Plant Disease ◽  
1997 ◽  
Vol 81 (8) ◽  
pp. 936-941 ◽  
Author(s):  
Stephanie S. Garr ◽  
Carolyn Hughes ◽  
Jacqueline Welch ◽  
Scott A. Brown ◽  
Michael H. Perlin
Keyword(s):  
Host Species ◽  
Host Preference ◽  
Small Sample Size ◽  
Small Sample ◽  
Microbotryum Violaceum ◽  
Coding Regions ◽  
Tubulin Genes ◽  
Wobble Position ◽  
Conserved Gene ◽  
Respective Host

The anther smut fungus, Microbotryum violaceum, infects over 200 species of Caryophyllaceae (Pinks). However, limited published studies, as well as anecdotal evidence, suggest that each isolate of the fungus is restricted to one or a few species that it can productively infect. In the absence of physical differences, it would be useful to have molecular markers to identify individuals with specific host ranges prior to genetic analyses of host preference. With this purpose in mind, 17 isolates from eight different host species were characterized for differences in their respective γ-tubulin genes. The region of the gene including the sixth and seventh introns and some surrounding coding regions was amplified and sequenced and the results were analyzed phylogenetically. Despite the small sample size and the geographical distribution of their respective host plants, isolates from the same host species showed no differences in the DNA regions examined; isolates of closely related pathovars also grouped together. In contrast, relative to the corresponding regions from other pathovars, isolates from host species that were genetically or taxonomically more distant showed a marked number of differences in both introns and in the third (wobble) position of codons in the seventh exon. Thus, DNA sequence differences in this highly conserved gene may be used to distinguish isolates from different host species. Such information may prove useful as markers for the different formae speciales in future analyses of host preference.

Maintenance of Sex‐Linked Deleterious Alleles by Selfing and Group Selection in Metapopulations of the Phytopathogenic Fungus Microbotryum violaceum

2005 ◽  
Vol 165 (5) ◽  
pp. 577-589 ◽  
Author(s):  
Aurélien Tellier ◽  
Lorys M. M. A. Villaréal ◽  
Tatiana Giraud
Keyword(s):  
Group Selection ◽  
Phytopathogenic Fungus ◽  
Microbotryum Violaceum ◽  
Maintenance Of Sex ◽  
Deleterious Alleles

Variation in Breeding System Traits within and among Populations of Microbotryum violaceum on Silene dioica

2008 ◽  
Vol 169 (2) ◽  
pp. 293-303 ◽  
Author(s):  
Åsa Granberg ◽  
Ulla Carlsson‐Granér ◽  
Per Arnqvist ◽  
Barbara E. Giles
Keyword(s):  
Breeding System ◽  
Silene Dioica ◽  
Microbotryum Violaceum

Immunolocalization of fimbrial epitopes in thin sections of Microbotryum violaceum

1997 ◽  
Vol 43 (2) ◽  
pp. 136-142 ◽  
Author(s):  
Martina Celerin ◽  
Alan W. Day ◽  
Ronald J. Smith ◽  
David E. Laudenbach
Keyword(s):  
Extracellular Matrix ◽  
Cell Wall ◽  
Plasma Membranes ◽  
Microbotryum Violaceum ◽  
Thin Sections ◽  
Present Evidence ◽  
Biochemical Analyses ◽  
Protein Moiety ◽  
Peripheral Cytoplasm

Fungal fimbriae are long (0.5–20 μm), narrow (7 nm) surface appendages that have been observed on most members of the Mycota. Biochemical analyses have determined that fimbriae from Microbotryum violaceum are composed of 74-kDa glycoproteinaceous subunits in which the protein moiety is fungal collagen. We present evidence for the localization of fimbrial subunits prior to their exportation from the cell. We term these internal, likely nonpolymerized fimbriae "pro-fimbriae" and demonstrate the location of the reserves within the peripheral cytoplasm. Also, we show that fimbriae may not traverse the cell wall as previously believed, but may instead originate from within the outer lamella of the cell wall, possibly being anchored to the cell wall via other molecules. This model is analogous to the animal extracellular matrix arrangement in which collagens are anchored to plasma membranes via other proteins such as fibronectin.Key words: fungus, immunolocalization, fimbriae, Microbotryum, Ustilago.

Local Maladaptation in the Anther-Smut Fungus Microbotryum violaceum to Its Host Plant Silene latifolia: Evidence from a Cross-Inoculation Experiment

Evolution ◽  
1999 ◽  
Vol 53 (2) ◽  
pp. 395 ◽  
Author(s):  
Oliver Kaltz ◽  
Sylvain Gandon ◽  
Yannis Michalakis ◽  
Jacqui A. Shykoff
Keyword(s):  
Host Plant ◽  
Silene Latifolia ◽  
Smut Fungus ◽  
Inoculation Experiment ◽  
Microbotryum Violaceum ◽  
Anther Smut

scholarly journals Evidence that fimbriae of the smut fungus Microbotryum violaceum contain RNA

Microbiology ◽  
1994 ◽  
Vol 140 (10) ◽  
pp. 2699-2704 ◽  
Author(s):  
M. Celerin ◽  
D. E. Laudenbach ◽  
J. B. Bancroft ◽  
A. W. Day
Keyword(s):  
Smut Fungus ◽  
Microbotryum Violaceum
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