Affiliation:
1. Max-Planck-Institut für Terrestrische Mikrobiologie, Karl-von-Frisch-Strasse, 35043 Marburg, Germany
Abstract
ABSTRACT
Sporisorium reilianum
and
Ustilago maydis
are two closely related smut fungi, which both infect maize but differ fundamentally in their mode of plant invasion and site of symptom development. As a prelude to studying the molecular basis of these differences, we have characterized the mating type loci of
S. reilianum. S. reilianum
has two unlinked mating type loci,
a
and
b
. Genes in both loci and adjacent regions show a high degree of synteny to the corresponding genes of
U. maydis
. The
b
locus occurs in at least five alleles and encodes two subunits of a heterodimeric homeodomain transcription factor, while the
a
locus encodes a pheromone/receptor system. However, in contrast to that of
U. maydis
, the
a
locus of
S. reilianum
exists in three alleles containing two active pheromone genes each. The alleles of the
a
locus appear to have arisen through recent recombination events within the locus itself. This has created a situation where each pheromone is specific for recognition by only one mating partner.
Publisher
American Society for Microbiology
Subject
Molecular Biology,General Medicine,Microbiology
Reference62 articles.
1. Multiple genes coding for precursors of rhodotorucine A, a farnesyl peptide mating pheromone of the basidiomycetous yeast Rhodosporidium toruloides
2. Albert, H. H., and S. Schenck. 1996. PCR amplification from a homolog of the bE mating-type gene as a sensitive assay for the presence of Ustilago scitaminea DNA. Plant Dis.80:1189-1192.
3. Gapped BLAST and PSI-BLAST: a new generation of protein database search programs
4. Anderson, C. M., D. A. Willits, P. J. Kosted, E. J. Ford, A. D. Martinez-Espinoza, and J. E. Sherwood. 1999. Molecular analysis of the pheromone and pheromone receptor genes of Ustilago hordei. Gene240:89-97.
5. Bakkeren, G., and J. W. Kronstad. 1993. Conservation of the b mating-type gene complex among bipolar and tetrapolar smut fungi. Plant Cell5:123-136.
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