Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana

Improvements in the formulation of biological insecticides are crucial to increase their stability and competitiveness in the market. The aim of this work was to evaluate the use of volcanic materials with different hydric retention capacities to increase the thermotolerance of B. bassiana conidia....

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Autores principales:	Sy,Victoria E, Schalamuk,Santiago, Scorsetti,Ana C, Botto,Irma L
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2016
Materias:	Biological insecticide entomopathogenic fungus thermotolerance volcanic ash
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200010
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spelling	oai:scielo:S0718-162020160002000102016-10-07Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassianaSy,Victoria ESchalamuk,SantiagoScorsetti,Ana CBotto,Irma L Biological insecticide entomopathogenic fungus thermotolerance volcanic ash Improvements in the formulation of biological insecticides are crucial to increase their stability and competitiveness in the market. The aim of this work was to evaluate the use of volcanic materials with different hydric retention capacities to increase the thermotolerance of B. bassiana conidia. Two pyroclastic rocks and a zeolite clinoptilolite were selected for this study. In addition, a commercial silica gel was used due to its reported capacity to increase conidial thermotolerance. Dry conidia were mixed with the materials to obtain a 2% w/w granular formulation, while conidial powder alone served as the control. Mixtures were stored at room temperature for 30 days and then exposed to 50 °C for two hours, and the viability was measured before and after the thermal exposure. No significant decrease in viability was observed for conidia stored with any of the pyroclastic materials, while the germination was reduced by 10, 17 and 23% for unformulated conidia, conidia stored with silica gel and conidia stored with zeolite, respectively. From these results, a pyroclastic rock was selected to test its capacity to maintain high viability under different temperatures (4, 25 and 35 °C) and humidities (~0 and 20%). A decrease in viability was observed with an increase of temperature, and lower viability was also recorded in humid treatments, but only at 25 and 35 °C.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.43 n.2 20162016-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200010en10.4067/S0718-16202016000200010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Biological insecticide entomopathogenic fungus thermotolerance volcanic ash
spellingShingle	Biological insecticide entomopathogenic fungus thermotolerance volcanic ash Sy,Victoria E Schalamuk,Santiago Scorsetti,Ana C Botto,Irma L Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana
description	Improvements in the formulation of biological insecticides are crucial to increase their stability and competitiveness in the market. The aim of this work was to evaluate the use of volcanic materials with different hydric retention capacities to increase the thermotolerance of B. bassiana conidia. Two pyroclastic rocks and a zeolite clinoptilolite were selected for this study. In addition, a commercial silica gel was used due to its reported capacity to increase conidial thermotolerance. Dry conidia were mixed with the materials to obtain a 2% w/w granular formulation, while conidial powder alone served as the control. Mixtures were stored at room temperature for 30 days and then exposed to 50 °C for two hours, and the viability was measured before and after the thermal exposure. No significant decrease in viability was observed for conidia stored with any of the pyroclastic materials, while the germination was reduced by 10, 17 and 23% for unformulated conidia, conidia stored with silica gel and conidia stored with zeolite, respectively. From these results, a pyroclastic rock was selected to test its capacity to maintain high viability under different temperatures (4, 25 and 35 °C) and humidities (~0 and 20%). A decrease in viability was observed with an increase of temperature, and lower viability was also recorded in humid treatments, but only at 25 and 35 °C.
author	Sy,Victoria E Schalamuk,Santiago Scorsetti,Ana C Botto,Irma L
author_facet	Sy,Victoria E Schalamuk,Santiago Scorsetti,Ana C Botto,Irma L
author_sort	Sy,Victoria E
title	Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana
title_short	Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana
title_full	Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana
title_fullStr	Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana
title_full_unstemmed	Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana
title_sort	volcanic materials as carriers for the formulation of mycoinsecticides using the fungus beauveria bassiana
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200010
work_keys_str_mv	AT syvictoriae volcanicmaterialsascarriersfortheformulationofmycoinsecticidesusingthefungusbeauveriabassiana AT schalamuksantiago volcanicmaterialsascarriersfortheformulationofmycoinsecticidesusingthefungusbeauveriabassiana AT scorsettianac volcanicmaterialsascarriersfortheformulationofmycoinsecticidesusingthefungusbeauveriabassiana AT bottoirmal volcanicmaterialsascarriersfortheformulationofmycoinsecticidesusingthefungusbeauveriabassiana
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Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana

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