2014
DOI: 10.1007/s00253-014-6225-2
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Production and quality of conidia by Metarhizium anisopliae var. lepidiotum: critical oxygen level and period of mycelium competence

Abstract: Mycoinsecticides application within Integral Pest Management requires high quantities of conidia, with the proper quality and resistance against environmental conditions. Metarhizium anisopliae var. lepidiotum conidia were produced in normal atmospheric conditions (21 % O2) and different concentrations of oxygen pulses (16, 26, 30, and 40 %); conidia obtained under hypoxic conditions showed significantly lower viability, hydrophobicity, and virulence against Tenebrio molitor larvae or mealworm, compared with t… Show more

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Cited by 25 publications
(23 citation statements)
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“…Furthermore, the conidial yield at 256 h was up to one order of magnitude higher with the 26% treatment (2Á1 9 10 9 conidia per gds), relative to the normal atmosphere (2Á1 9 10 8 conidia per gds). This conidiation increase is the highest reported, previous works showed two to five-fold increase in conidia production with similar oxygen-enriched pulses (Tlecuitl-Beristain et al 2010;Miranda-Hern andez et al 2014;Garcia-Ortiz et al 2015).…”
Section: Resultssupporting
confidence: 51%
“…Furthermore, the conidial yield at 256 h was up to one order of magnitude higher with the 26% treatment (2Á1 9 10 9 conidia per gds), relative to the normal atmosphere (2Á1 9 10 8 conidia per gds). This conidiation increase is the highest reported, previous works showed two to five-fold increase in conidia production with similar oxygen-enriched pulses (Tlecuitl-Beristain et al 2010;Miranda-Hern andez et al 2014;Garcia-Ortiz et al 2015).…”
Section: Resultssupporting
confidence: 51%
“…Additionally, García‐Ortiz et al . () observed different trends of infectivity parameters of M. anisopliae due to increasing O 2 concentration. Similarly, Montesinos‐Matías et al .…”
Section: Discussionmentioning
confidence: 95%
“…Se estandarizaron suspensiones a 1×10 4 conidios mL -1 provenientes de cultivos de cajas Petri, viales de vidrio y arroz que fueron incubados durante 10 días o productos formulados, a partir de los cuales se inocularon 30 µL de la suspensión (aproximadamente 300 conidios) en medio SDA en caja Petri, se incubaron a 28°C, después de 56 h se contabilizaron UFC y se reportó como porcentaje de viabilidad (Aceves-Michel et al, 2000;García-Ortiz et al, 2015).…”
Section: Viabilidadunclassified
“…Utilizando este modelo se realizó una estimación del parámetro TS´5 0 , que indica el tiempo (h) al que el 50% de los conidios eran todavía viables a la temperatura de exposición (42°) y el tiempo de incubación (Miranda-Hernández et al, 2014;García-Ortiz et al, 2015).…”
Section: Termotoleranciaunclassified
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