Conyza bonariensisas an alternative host for Colletotrichum species in Argentina
Author
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Bonacci, M.
Author
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Formento, A. N.
Author
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Morales, M. C.
Author
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Orlando, Julieta
Author
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Ibáñez, F.
Author
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Sartori, M.
Author
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Etcheverry, M.
Author
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Nesci, A.
Author
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Barros, G.
Admission date
dc.date.accessioned
2021-03-15T21:31:11Z
Available date
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2021-03-15T21:31:11Z
Publication date
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2020
Cita de ítem
dc.identifier.citation
Journal of Applied Microbiology Oct 2020
es_ES
Identifier
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10.1111/jam.14879
Identifier
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https://repositorio.uchile.cl/handle/2250/178700
Abstract
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Aims: This study investigated the diversity of Colletotrichum isolates recovered
from Conyza bonariensis leaves through the use of morphological
characteristics, growth rate, carbon sources utilization and phylogenetic
analysis.
Methods and Results: In all, 30 Colletotrichum isolates recovered from C.
bonariensis leaves showing symptoms of disease were included in the present
study. Based on the analysis of morphology and sequences, the isolates were
distributed into six Colletotrichum species complexes. The concatenated
alignment of GAPDH and ITS sequences showed that 20 out of 30 isolates
were included in four species complexes which comprise the most important
pathogens causing anthracnose in soybean or anthracnose and stalk rot in
maize: C. truncatum, C. orchidearum, C. gloeosporioides and C. graminicola. The
remaining 10 isolates were included in the C. boninense and C. destructivum
species complexes or could not be assigned to any complex with the available
information.
Conclusion: Weeds belonging to genus Conyza are host to soybean and maize
potential pathogenic species of Colletotrichum and could have a role as
inoculum reservoir for cross contamination in the agroecosystem.
Significance and Impact of the Study: The combined use of morphological,
kinetics and physiological parameters of growth and phylogenetic analysis in
Colletotrichum isolates from Conyza leaves allowed the detection of species
complexes previously not identified in Argentina.
es_ES
Patrocinador
dc.description.sponsorship
Secretaria de Ciencia y Tecnica, Universidad Nacional de Rio Cuarto (SECyT-UNRC PPI 2020-2022)
ANPCyT
PICT 2102/16