INVESTIGADORES
TEN HAVE Arjen
artículos
Título:
Partial stem and leaf resistance against the fungal pathogen Botrytis cinerea in wild relatives of tomato.
Autor/es:
TEN HAVE A, VAN BERLOO, R, LINDHOUT P, AND VAN KAN JAL
Revista:
EUROPEAN JOURNAL OF PLANT PATHOLOGY
Referencias:
Año: 2007 vol. 117 p. 153 - 166
ISSN:
0929-1873
Resumen:
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Tomato (Solanum lycopersicum) is one of
many greenhouse crops that can be infected by the necrotrophic
ascomycete Botrytis cinerea. Commercial cultivation of tomato is
hampered by the lack of resistance. Quantitative
resistance has been
reported in wild tomato
relatives, mostly based on leaf assays. We
aimed
to identify wild tomato relatives with resistance
to B.
cinerea based on quantitative assays
both on leaves and stem
segments, monitoring
infection frequency and disease expansion rate
as parameters. A quantitative tomato stem
segment assay was
developed. This stem assay
and a previously described leaf assay
were used
to screen a collection of 22 Solanum accessions.
Significant differences in disease parameters
were observed among
accessions. Resistance to
B. cinerea was observed in a number of
wild
Solanum species, including accessions of
S. chilense, S.
habrochaites and S. neorickii,
both in the leaf assay and the stem
segment assay. A number of resistant and
susceptible
accessions were evaluated as adult plants under
greenhouse conditions. The data obtained in
greenhouse assays
confirmed the leaf and
stem disease data. The expression of
several
defence-related genes was studied in a subset of
accessions. There was no apparent correlation
between the expression
levels of the genes
tested and the quantitative resistance level to
B. cinerea.