| Autor: |
Fernández FD; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Unidad de Fitopatología y Modelización Agrícola (UFYMA), Córdoba.; Instituto de Patología Vegetal (IPAVE), CIAP-INTA, Camino 60 cuadras Kmt 5.5. X5020ICA, Córdoba, Argentina., Galdeano E; Instituto de Botánica del Nordeste, (CONICET-UNNE), Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste, Sargento Cabral 2131 (3400). Corrientes, Argentina., Conci LR; Instituto de Patología Vegetal (IPAVE), CIAP-INTA, Camino 60 cuadras Kmt 5.5. X5020ICA, Córdoba, Argentina.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Unidad de Fitopatología y Modelización Agrícola (UFYMA), Córdoba. |
| Jazyk: |
angličtina |
| Zdroj: |
International journal of systematic and evolutionary microbiology [Int J Syst Evol Microbiol] 2020 Jan; Vol. 70 (1), pp. 35-43. |
| DOI: |
10.1099/ijsem.0.003704 |
| Abstrakt: |
Symptoms of phytoplasma infection were observed in different weed species, Bidens subalternans , Conyza bonariensis , Heterosperma ovatifolium and Conium maculatum , collected from diverse geographical regions in Argentina. To confirm the association of phytoplasma infection with symptomatic plants, PCR, RFLP and phylogenetic analyses based on 16S rRNA-encoding sequences were performed. In this work, we report the presence of phytoplasmas from group 16SrVII (subgroup 16VII-B) infecting C. bonariensis and B. subalternans and from group 16SrIII (subgroup 16SrIII-X) B. subalternans , H. ovatifolium , and C. maculatum . Phytoplasmas from the aster yellows group were detected infecting C. bonariensis and B. subalternans . Analysis of 16S rRNA-encoding genes revealed the presence of two distinct operons, rrnB (16SrI-B) and newly described rrnA , which is different from the reference RFLP patterns of all previously established 16SrI-subgroups. A single rp operon sequence analysis reveals the presence of simple infection and confirms a description of a novel subgroup. On the basis of these results we propose a designation of new subgroup 16SrI-(B/AJ) AJ ( rp -AJ). To our knowledge, this is the first report of phytoplasmas infecting Bidens subalternans ¸ Heterosperma ovatifolium and Conium maculatum . |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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