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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
18/03/2016 |
Data da última atualização: |
18/04/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
TIAN, J.; DIAO, H.; LIANG, L.; ARTHURS, S.; HAO, C.; MASCARIN, G. M.; MA, R. |
Afiliação: |
JING TIAN, SHANXI AGRICULTURAL UNIVERSITY, China; HONGLIANG DIAO, SHANXI AGRICULTURAL UNIVERSITY, China; LI LIANG, SHANXI AGRICULTURAL UNIVERSITY, China; STEVEN ARTHURS, UNIVERSITY OF FLORIDA, USA; CHI HAO, SHANXI AGRICULTURAL UNIVERSITY, China; GABRIEL MOURA MASCARIN, CNPAF; RUIYAN MA, SHANXI AGRICULTURAL UNIVERSITY, China. |
Título: |
Host plants influence susceptibility of whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) to the entomopathogenic fungus Isaria fumosorosea (Hypocreales: Cordycipitaceae). |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Biocontrol Science and Technology, v. 26, n. 4, p. 528-538, 2016. |
DOI: |
10.1080/09583157.2015.1129393 |
Idioma: |
Inglês |
Conteúdo: |
We quantified the tritrophic effect of host plant on the susceptibility of the sweetpotato whitefly Bemisia tabaci (Genn.) to a fungal pathogen in the laboratory. Second-instar whiteflies reared on cucumber, eggplant, tomato and bean plants for six generations were exposed to conidial suspensions of Isaria fumosorosea isolate IF-1106. Our results did not detect differences in response (proportional survival or median lethal time, LT50 days) among insect populations derived from different plants that were treated with 107 conidia/ml. However, at concentrations <- 5×106 conidia/ml, whiteflies reared on bean and tomato died significantly more quickly (i.e. LT50 of 4?5 days) compared with cucumber and eggplant reared populations (5?7 days). Bean and tomato-reared populations were also more susceptible to mycosis (LC50 = 6 × 105 conidia/ml) compared with those reared on cucumber (1.9 × 106 conidia/ml) and eggplant (1.5 × 106 conidia/ml). A separate study confirmed that this differential response of whitefly populations to I. fumosorosea was not explained by differences in deposition rate of conidia on leaf surfaces (i.e. a dosage effect). Our findings show that host plants affect the pathogenicity and virulence of a herbivore pathogen, but depend on the rate of exposure (inoculum) applied. |
Thesagro: |
Bemisia tabaci; Fungo entomogeno; Mosca branca. |
Thesaurus Nal: |
Isaria fumosorosea. |
Categoria do assunto: |
O Insetos e Entomologia |
Marc: |
LEADER 02125naa a2200253 a 4500 001 2041326 005 2016-04-18 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1080/09583157.2015.1129393$2DOI 100 1 $aTIAN, J. 245 $aHost plants influence susceptibility of whitefly Bemisia tabaci (Hemiptera$bAleyrodidae) to the entomopathogenic fungus Isaria fumosorosea (Hypocreales: Cordycipitaceae).$h[electronic resource] 260 $c2016 520 $aWe quantified the tritrophic effect of host plant on the susceptibility of the sweetpotato whitefly Bemisia tabaci (Genn.) to a fungal pathogen in the laboratory. Second-instar whiteflies reared on cucumber, eggplant, tomato and bean plants for six generations were exposed to conidial suspensions of Isaria fumosorosea isolate IF-1106. Our results did not detect differences in response (proportional survival or median lethal time, LT50 days) among insect populations derived from different plants that were treated with 107 conidia/ml. However, at concentrations <- 5×106 conidia/ml, whiteflies reared on bean and tomato died significantly more quickly (i.e. LT50 of 4?5 days) compared with cucumber and eggplant reared populations (5?7 days). Bean and tomato-reared populations were also more susceptible to mycosis (LC50 = 6 × 105 conidia/ml) compared with those reared on cucumber (1.9 × 106 conidia/ml) and eggplant (1.5 × 106 conidia/ml). A separate study confirmed that this differential response of whitefly populations to I. fumosorosea was not explained by differences in deposition rate of conidia on leaf surfaces (i.e. a dosage effect). Our findings show that host plants affect the pathogenicity and virulence of a herbivore pathogen, but depend on the rate of exposure (inoculum) applied. 650 $aIsaria fumosorosea 650 $aBemisia tabaci 650 $aFungo entomogeno 650 $aMosca branca 700 1 $aDIAO, H. 700 1 $aLIANG, L. 700 1 $aARTHURS, S. 700 1 $aHAO, C. 700 1 $aMASCARIN, G. M. 700 1 $aMA, R. 773 $tBiocontrol Science and Technology$gv. 26, n. 4, p. 528-538, 2016.
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