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Agricultura Técnica
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0365-2807
EISSN: 0365-2807
Vol. 63, No. 4, 2003, pp. 339-346
Bioline Code: at03038
Full paper language: Spanish
Document type: Research Article
Document available free of charge

Agricultura Técnica, Vol. 63, No. 4, 2003, pp. 339-346

 es Respuesta de dos Aislamientos Chilenos de Metarhizium Anisopliae(Metschnikoff) Sorokin a la Adición de un Protector Solar
Devotto, Luis M. & Gerding, Marcos P.

Resumen

Dos aislamientos chilenos de Metarhizium anisopliae (Metchsnikoff) Sorokin fueron expuestos a dosis crecientes de luz ultravioleta (UV), en condiciones de laboratorio. Conidias en suspensión acuosa fueron esparcidas en placas Petri con agar y éstas fueron puestas bajo una lámpara de luz UV-C ( λ = 254 nm). Sin el protector solar, la exposición de las conidias durante 40 s redujo su germinación de 80-95% a sólo 5-2%, para QU-M221b y QU-M363, respectivamente. Usando el protector solar Blankophor P167® â al 1% p/v, la germinación de las conidias, tras 40 s de exposición, se redujo desde 68-82% a 50-33% para QU-M221b y QU-M363, respectivamente. Los resultados indican que este protector solar es un potencial adjuvante para ser usado en biopesticidas basados en M. anisopliae .

Palabras-clave
radiación solar, hongos entomopatógenos, protector solar, biopesticida, luz ultravioleta

 
 en Response of two Chilean Metarhizium Anisopliae(Metschnikoff) Sorokin Isolates to the Addition of a Solar Sunscreen
Devotto, Luis M. & Gerding, Marcos P.

Abstract

Two Chilean isolates of Metarhizium anisopliae (Metschnikoff) Sorokin (QU-M363 and QU-M221b) were exposed to increasing doses of ultraviolet light (UV) under laboratory conditions. Conidia suspended in aqueous solution were spread on Petri dishes containing agar-agar and were placed under a UV lamp ( λ = 254 nm). Without sunscreen, exposure of conidia to UV-C light reduced germination after 40 s from 80-95% to 5-2%, for QU-M221b and QU-M363, respectively. Using the solar screen Blankophor P167® â at 1% w/v, conidia germination decreased after 40 s from 68-82% to 50-33% for QU-M221b and QU-M363, respectively. Results indicate that the sunscreen Blankophor P167 is a potential adjuvant to be used in biopesticides based on M. anisopliae .

Keywords
solar radiation, entomopathogenic fungi, sunscreen, biopesticides, UV light

 
© Copyright 2003 - Instituto de Investigaciones Agropecuarias, INIA (Chile). Free, full-text also available from http://www.inia.cl/at/agritec.htm
Alternative site location: http://www.inia.cl/at/agritec.htm

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