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Assessing host specialization of B otrytis cinerea on lettuce and tomato by genotypic and phenotypic characterization
This study tested the hypothesis that B otyrtis cinerea shows host specialization on tomato and lettuce, using phenotypic and genotypic tools. Strains were isolated from tomato and lettuce grown together in the same greenhouse. Forty‐four lettuce strains and 42 tomato strains were investigated for t...
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Published in: | Plant pathology 2015-02, Vol.64 (1), p.119-127 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | This study tested the hypothesis that
B
otyrtis cinerea
shows host specialization on tomato and lettuce, using phenotypic and genotypic tools. Strains were isolated from tomato and lettuce grown together in the same greenhouse. Forty‐four lettuce strains and 42 tomato strains were investigated for their genetic diversity and their aggressiveness. Both gene diversity and allelic richness were significantly higher in lettuce strains than in tomato strains (
P
=
0·01). Cluster analysis revealed a clear division of the strains under study into two clusters. However, this structure did not separate the strains according to their host of origin. Tomato strains were significantly more aggressive than lettuce strains when inoculated on tomatoes (
P
=
0·001), but no significant differences in aggressiveness were observed when the strains were inoculated on lettuce (
P
=
0·17) or on apple (
P
=
0·87). The results suggest an absence of clear host specialization of
B
. cinerea
on tomato and lettuce. |
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ISSN: | 0032-0862 1365-3059 |
DOI: | 10.1111/ppa.12234 |