Data/hora: 25/06/2024 18:20:20

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Data corrente: 	18/03/2016	
Data da última atualização: 	18/04/2016	
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	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (34099-1) - UPC - AP - DD - 2016 -  - 2016 - DIS