Producción y calidad de conidios de cepas de entomopatógenos del género Metarhizium anisopliae, aislados en zonas agrícolas del Estado de México

Alcantara-Vargas, Erik; Espitia-López, Josefa; Garza-López, Paul Misael; Angel-Cuapio, Alejandro

doi:10.22201/ib.20078706e.2020.91.2912

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…is lower than that reported by Alcantara-Vargas et al [30], who reported a conidia production of 9 × 10 8 conidia mL −1 of the substrate by M. anisopliae. According to Fargues et al [31] and Alcantara-Vargas et al [30], conidia production by Metarhizium strains can be infuenced by the nutrient content of the culture medium and the production method. Currently, no evaluations of conidia production of other strains of B. peruviensis have been made.…”

Section: Resultscontrasting

confidence: 67%

In Vitro Biological Activity of Beauveria bassiana, Beauveria peruviensis, and Metarhizium sp. against Hypothenemus hampei (Coleoptera: Curculionidae)

Chuquibala-Checan,

Torres-de la Cruz,

Leiva

et al. 2023

International Journal of Agronomy

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Coffee (Coffea arabica) is the main commodity in Peru and is the economic support for thousands of small farmers. However, coffee production is affected by the coffee berry borer (Hypothenemus hampei). Currently, H. hampei is the most important pest in whole coffee-growing regions in Peru. This study aimed to evaluate in vitro biological activity of Beauveria bassiana, Beauveria peruviensis, and Metarhizium sp. against Hypothenemus hampei in two trials at different times. Conidia production, Conidia viability, and pathogenicity against H. hampei were evaluated at three concentrations (1 × 105, 1 × 107, and 1 × 109 conidia/mL−1). In addition, lethal times (LT50 and LT90) and lethal concentrations (LC50 and LC90) were calculated. There were significant differences in conidia production ( P < 0.001) and conidia viability ( P < 0.041). The highest conidia production and conidia viability were reached by B. bassiana and B. peruviensis, respectively. Likewise, there were differences in the pathogenicity of the strains in the two tests carried out (test 1: P < 0.0009 and test 2: P < 0.0001). The highest mortality occurred in the treatments of B. bassiana 1 × 109 conidia/mL−1, B. bassiana 1 × 107 conidia/mL−1, and B. peruviensis 1 × 109 conidia/mL−1. The treatments with lower LT50 and LT90 were B. bassiana 1 × 109 conidia/mL−1 and B. peruviensis 1 × 109 conidia/mL−1, and the strains with the lowest LC50 and LC90 were B. peruviensis and B. bassiana. The in vitro characteristics shown by B. bassiana and B. peruviensis conditions suggest they should be evaluated in the field to determine the capability of these strains to reduce populations of H. hampei.

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Section: Resultscontrasting

confidence: 67%

In Vitro Biological Activity of Beauveria bassiana, Beauveria peruviensis, and Metarhizium sp. against Hypothenemus hampei (Coleoptera: Curculionidae)

Chuquibala-Checan,

Torres-de la Cruz,

Leiva

et al. 2023

International Journal of Agronomy

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“…Advances in Enzyme Research, 12, 1-15. https://doi.org/10.4236/aer.2024.121001 logical control agents, since they are responsible for causing diseases in insects [1]. Until now, more than 90 genders and 700 species of EF have been described and the isolation of new strains continues, among the most used are: Metarhizum anisopliae with 33.9%, Beauveria bassiana with 33.9%, Cordyceps (=Isaria) fumosorosea with 5.8% and Beauveria brongniartii with 4.1% [2] [3]. EF present a life cycle marked by a stage at which conidia are formed as a form of asexual reproduction, in which fungi remain until adhere to the insect's cuticle [4].…”

Section: Introductionmentioning

confidence: 99%

Secondary Metabolites of Entomopathogenic Fungi, Biological Alternative for the Control of Agricultural Pests and Disease: Present and Perspectives

Juan-Maldonado,

Rodríguez-Navarro,

Angel-Cuapio

et al. 2024

AER

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The use of entomopathogenic fungi (EF) in recent years has been highly effective against the different orders of insects considered pests of agricultural importance and their conidia have been commonly applied, but it has been reported that these are sensitive to the environmental conditions. For this reason, biopesticides products have been formulated based on secondary metabolites, recently. These biomolecules participate as biological control agent, such as: cyclic depsipeptides, amino acids, polyketides, polyphenols and terpenoids, affecting their morphology, life cycle and insect behavior. The use of secondary metabolites of entomopathogenic fungi opens the possibility of application in a more efficient way for the control of agricultural pests in a compatible with the environment and human health; therefore, it is important to know, analyzing the type of molecules, their effects, and their different methods of application.

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Addition of spherical‐style packing improves the production of conidia by Metarhizium robertsii in packed column bioreactors

Méndez-González

Figueroa-Montero

Saucedo‐Castañeda

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Conidia from Metarhizium are part of the commercial formulations used worldwide for insect pest control. Among the alternatives proposed to improve conidia production, the use of packed column bioreactors allows controlled processes with higher levels of production and productivity than those obtained with the traditional process in plastic bags. However, problems associated with overheating, low CO2 removal, and inadequate oxygen supply in packed columns limit the scale‐up and operation at an industrial scale. RESULTS Packed densities, up to 1.5 times higher than those obtained in lab‐scale column bioreactors, negatively affected growth and conidia production by Metarhizium robertsii (ENCB‐MG‐81). Therefore, a spherical‐style packing was added to decrease packed density and improve the culture conditions in packed column bioreactors. The addition of spherical‐style packing reduced the axial temperature gradient (up to 50%), increased the maximum CO2 production rate and the total CO2 production (up to 2.5 times), and enhanced the volumetric conidia productivity in packed column bioreactors from 5.28 ± 1.36 to 6.77 ± 0.89 × 108 conidia cm−3. CONCLUSION The use of spherical‐style packing within the culture bed in column bioreactors improves the production of conidia by Metarhizium robertsii, as well as the gas exchange and heat removal from the bed. © 2021 Society of Chemical Industry (SCI).

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Producción y calidad de conidios de cepas de entomopatógenos del género Metarhizium anisopliae, aislados en zonas agrícolas del Estado de México

Cited by 4 publications

References 25 publications

In Vitro Biological Activity of Beauveria bassiana, Beauveria peruviensis, and Metarhizium sp. against Hypothenemus hampei (Coleoptera: Curculionidae)

In Vitro Biological Activity of Beauveria bassiana, Beauveria peruviensis, and Metarhizium sp. against Hypothenemus hampei (Coleoptera: Curculionidae)

Secondary Metabolites of Entomopathogenic Fungi, Biological Alternative for the Control of Agricultural Pests and Disease: Present and Perspectives

Addition of spherical‐style packing improves the production of conidia by Metarhizium robertsii in packed column bioreactors

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