Undetected Infection by Maize Bushy Stunt Phytoplasma Enhances Host-Plant Preference to Dalbulus maidis (Hemiptera: Cicadellidae)
| Autor: | João Roberto Spotti Lopes, Javier García Gonzalez, Marisol Giraldo Jaramillo |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Male Veterinary medicine Phytoplasma MILHO 01 natural sciences Asymptomatic Choice Behavior Zea mays Crop Hemiptera 03 medical and health sciences medicine Animals Herbivory Pathogen Ecology Evolution Behavior and Systematics Plant Diseases Ecology biology Transmission (medicine) fungi food and beverages biology.organism_classification Insect Vectors Leafhopper 010602 entomology 030104 developmental biology Insect Science Vector (epidemiology) Female medicine.symptom |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1938-2936 |
| Popis: | Vector-borne plant pathogenic bacteria can induce changes in infected plants favoring the insect vector behavior and biology. The study aimed to determine the effect of maize bushy stunt phytoplasma (MBSP) postinoculation period on the host plant preference and transmission efficiency by the corn leafhopper, Dalbulus maidis DeLong & Wolcott, 1923 (Hemiptera: Cicadellidae). In a series of choice tests, D. maidis preference was measured as settling and oviposition on healthy maize plants versus infected maize plants showing early disease symptoms, advanced symptoms, or no symptoms. Finally, transmission efficiency of D. maidis was measured when the vector previously acquired the phytoplasma from asymptomatic source plants at different postinoculation periods. D. maidis adults preferred to settle and to oviposit on healthy than on symptomatic infected plants with advanced disease symptoms, and preferred asymptomatic plants over symptomatic ones. MBSP transmission by D. maidis was positively correlated with the postinoculation period of the source plant. Results suggest an MBSP modulation for D. maidis preference on asymptomatic infected maize plants in the early stages of the crop, allowing the pathogen an undetected transmission. |
| Databáze: | OpenAIRE |
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