Fecha/hora: 06/06/2024 13:34:40

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	09/09/2014	
Fecha de la última actualización: 	11/10/2019	
Autoria: 	RIVAS, F.; NUÑEZ, P.; JACKSON, T.; ALTIER, N.	
Afiliación: 	FEDERICO RIVAS FRANCO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; PABLO FEDERICO NUÑEZ LOPEZ, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; NORA ADRIANA ALTIER MANZINI, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.	
Título: 	Effect of temperature and water activity on mycelia radial growth, conidial production and germination of Lecanicillium spp. isolates and their virulence against Trialeurodes vaporariorum on tomato plants.	
Año de publicación: 	2014	
Fuente/Imprenta: 	BioControl, 2014, v.59, no.1, p.99-109.	
Volumen: 	59 (1)	
Páginas: 	99-109	
ISSN: 	1386-6141	
DOI: 	10.1007/s10526-013-9542-y	
Idioma: 	Inglés	
Notas: 	Article history: Received: 11 October 2012 / Accepted: 2 September 2013 / Published online: 20 September 2013.	
Contenido: 	ABSTRACT.

Biocontrol of the whitefly Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) using entomopathogenic fungi has been a difficult challenge under greenhouse conditions. In order to select fungal isolates adapted to high temperature and extremely low moisture nine isolates of Lecanicillium lecanii (Zimmerman) Zare & W. Gams, L. attenuatum Zare & W. Gams and L. longisporum (Petch) Zare & W. Gams (Hypocreales: Clavicipitaceae) were evaluated. In vitro assays were performed to determine colony radial growth, conidial production and conidial germination in three water activity media (aw = 0.97, 0.98 and 1.00) at 28 and 32 °C. Virulence of Lecanicillium spp. isolates was evaluated against third instar T. vaporariorum on tomato plants at 23 °C. Colony radial growth, conidial production and germination decreased with the reduction in water activity, while 32 °C was extremely detrimental for all fungal isolates. However, some isolates were able to grow and produce conidia at low water activity and high temperature. Additionally, mortality above 60 % was recorded for one of these isolates. Practical implementation of biocontrol of T. vaporariorum under greenhouse production systems should consider the selection of those Lecanicillium isolates that show tolerance to the adverse environmental conditions in greenhouses.
© 2013 International Organization for Biological Control (IOBC).	
Palabras-Clave: 	ENTOMOPATHOGENIC FUNGI; GREENHOUSE; WHITEFLY.	
Thesagro: 	BIOCONTROL; HONGOS ENTOMOPATÓGENOS; INVERNADERO; MOSCA BLANCA.	
Categoría del tema: 	A50 Investigación agraria	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (100024-1) - PXI - AP - DD - PP/BIOCONTROL/2014 -  -  - DIS