Bioactivity of Pelargonium graveolens essential oil and related monoterpenoids against sweet potato whitefly, Bemisia tabaci biotype B

Autor(es)

Baldin, Edson L. L. ^[1] ; Aguiar, Gabriela P. ^[2] ; Fanela, Thiago L. M. ^[1] ; Soares, Muriel C. E. ^[1] ; Groppo, Milton ^[3] ; Crotti, Antonio E. M. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fac Ciencias Agron, Dept Protecao Vegetal, Botucatu, SP - Brazil

^[2] Univ Franca, Nucleo Pesquisas Ciencias Exatas & Tecnol, Franca, SP - Brazil

^[3] Univ Sao Paulo, Dept Biol, Fac Filosofia Ciencias & Letras Ribeirao Preto, Ribeirao Preto, SP - Brazil

^[4] Univ Sao Paulo, Dept Quim, Fac Filosofia Ciencias & Letras Ribeirao Preto, BR-14040901 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PEST SCIENCE; v. 88, n. 1, p. 191-199, MAR 2015.
• Citações Web of Science: 12

Resumo

The sweet potato whitefly, Bemisia tabaci Gennadius biotype B (Hemiptera: Aleyrodidae), causes high economic losses in vegetables, beans, soybeans, peanuts, cotton, and several ornamental plants. Repeated spray applications of synthetic pesticides has led B. tabaci to develop resistance to numerous conventional insecticides, besides polluting the environment. In this work, we investigated the bioactivity of the essential oil of Pelargonium graveolens L'Her (Geraniaceae) (PG-EO) and some related monoterpenes against the sweet potato whitefly Bemisia tabaci Gennadius biotype B (Homoptera: Aleyrodidae) in tomato. This oil significantly reduced the number of B. tabaci adults on tomato leaflets. The deterrence experiments showed similar results for PG-EO, geraniol, and citronellol; however, citronellol was more effective than PG-EO. In fumigation tests, the essential oil of P. graveolens caused 100 % mortality of adults of B. tabaci biotype B at concentrations from 0.5 mu L L-1 in air. The vapor toxicity of geraniol, linalool, and citronellol, the main chemical constituents of the essential oil of P. graveolens (PG-EO), was similar to that of PG-EO. These results suggest that PG-EO and its related monoterpenes are potentially applicable to develop effective natural product-based pest-management compounds. (AU)

• Processo FAPESP: 07/50688-8 - Avaliacao da bioatividade de extratos vegetais sobre bermisia tabaci (genn.) biotipo b em tomateiro.
• Beneficiário: Edson Luiz Lopes Baldin
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 07/54241-8 - Prospecção de óleos essenciais de espécies brasileiras cultiváveis com atividade contra patógenos da cavidade bucal
• Beneficiário: Antônio Eduardo Miller Crotti
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores