Conyza bonariensis as an alternative host for Colletotrichum species in Argentina
Autor: | Fernando Ibáñez, Andrea Nesci, Melina Victoria Sartori, Ángela Norma Formento, M. C. Morales, Miriam Etcheverry, Germán Gustavo Barros, Julieta Orlando, Martín Bonacci |
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Rok vydání: | 2020 |
Předmět: |
0303 health sciences
biology 030306 microbiology Host (biology) Argentina Glyceraldehyde-3-Phosphate Dehydrogenases Sequence Analysis DNA General Medicine biology.organism_classification Zea mays Applied Microbiology and Biotechnology Carbon Fungal Proteins 03 medical and health sciences Colletotrichum Botany Soybeans Colletotrichum species Conyza DNA Fungal Phylogeny Plant Diseases 030304 developmental biology Biotechnology |
Zdroj: | Journal of Applied Microbiology. 130:1656-1670 |
ISSN: | 1365-2672 1364-5072 |
Popis: | 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.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.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.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. |
Databáze: | OpenAIRE |
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