| Texto completo | |
| Autor(es): |
dos Santos, Ricardo Feliciano
[1]
;
Sposito, Marcel Bellato
[1]
;
Ayres, Matthew
[2]
;
Sosnowski, Mark
[2]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Dept Fitopatol & Nematol, Escola Super Agr Luiz de Queiroz, BR-13418900 Piracicaba, SP - Brazil
[2] South Australian Res & Dev Inst, GPO Box 397, Adelaide, SA 5001 - Australia
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | European Journal of Plant Pathology; v. 152, n. 3, p. 815-821, NOV 2018. |
| Citações Web of Science: | 3 |
| Resumo | |
Anthracnose, caused by Elsinoe ampelina, is an important disease of grapevines in humid and warm production regions of the world. Colonies of E. ampelina grow slowly and rarely produce conidia on artificial media. To facilitate studies involving E. ampelina, our objective was to develop a method to induce significant conidial production of this fungus. In the present study, we induced the in vitro production of conidia of 10 Australian isolates by shake-incubation of mycelial fragments in rainwater under continuous light and darkness. Furthermore, seven Brazilian isolates were shake-incubated in rainwater and distilled water under continuous darkness. In both experiments cultures were shaken at 200-rpm and kept at room temperature (22-25 degrees C) for 7days. Conidial production, germination, and severity of symptoms were quantified. Australian and Brazilian isolates produced different amounts of conidia. All Australian isolates sporulated in rainwater ranging from 4.20x10(3) to 5.91x10(6) conidia mL(-1), with more than 90% conidial germination on water agar medium. All but one Brazilian isolate produced conidia in rainwater and distilled water, ranging from 7.50x10(3) to 8.22x10(6) conidia mL(-1), with high germination percentages. Conidial suspensions from both Australian and Brazilian E. ampelina isolates caused typical anthracnose symptoms on grapevine leaves. This study describes an efficient method, using rainwater or distilled water associated with shaking, to induce the conidia production of E. ampelina. (AU) | |
| Processo FAPESP: | 14/24472-1 - Etiologia e epidemiologia da antracnose da videira |
| Beneficiário: | Ricardo Feliciano dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/01508-6 - Caracterização de Elsinoe ampelina associado com antracnose da videira no Brasil e Austrália |
| Beneficiário: | Ricardo Feliciano dos Santos |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 13/24003-9 - Epidemiologia, avaliação de danos e controle de doenças da videira |
| Beneficiário: | Lilian Amorim |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |