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Population genetic analysis of Fusarium moniliforme isolates from corn in Korea.
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 Authours
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Sook-Young Park[0], Jeong-Ah Seo[1], Yin-Won Lee[0] and Yong-Hwan Lee[0][*] |
| Title |
Population genetic analysis of Fusarium moniliforme isolates from corn in Korea. |
| Journal |
The Plant Pathology Journal, 2001 (17) ~ |
Abstract
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We analyzed 88 strains of Gibberella fujikuroi (Anamorph:
Fusarium section Liseola) from maize in Korea
for mating population, mating type, fumonisin production,
vegetative compatibility, and random amplified
polymorphic DNA (RAPD) patterns. We found 50
strains that were MATA-2, 22 that were MATA-1, 1 that
was MATD-1, and 15 that were not reproducibly fertile
with any of the mating type testers. Of the 50 MATA-2,
15 were female fertile, while 10 of the 22 MATA-1
strains were female fertile. A total of 1,138 nitrate nonutilizing
(nit) mutants were recovered from a total of 88
strains. These strains were grouped into 39 vegetative
compatibility groups (VCGs) by demonstrating heterokaryosis
between nit mutants. A single maize ear could
be infected by more than one VCG of F. moniliforme.
RAPD analysis measured genetic diversity among 63
strains of F. moniliforme. Several VCGs were distinguished
by RAPD fingerprinting patterns. Most strains
produced significant levels of fumonisins. However, 6
MATA-2 strains from a single VCG produced higher
levels of fumonisin B3 than that of fumonisin B1 or B2.
From these data, we concluded that most Korean
strains of F. moniliforme associated with maize belonged
to mating population A and produced significant levels
of fumonisins. Furthermore, RAPD analysis could differentiate
strains associated with different VCGs. |
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