Pathogencity induced by the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae in Agrotis ipsilon (Hufn.)

Gabarty, A.; Salem, H.M.; Fouda, Mohamed A.; Abas, A.A.; Ibrahim, A. A.

doi:10.1016/j.jrras.2013.12.004

Cited by 72 publications

(45 citation statements)

References 13 publications

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“…A similar SEM study showed variation in efficiency and extent of infection among fungal isolates of B. bassiana than M. anisoplae while little variation was recorded in timing and duration of the phases in the infection process for these two isolates (Moino Jr. et al, 2002). Similar to our observations, Gabarty et al (2014) reported adhesion and penetration by B. bassiana and M. anisopliae on Agrotis ipsilon larvae by SEM. The SE micrographs showed presence of dense hyphal network as well as spores on insect cuticle and also in the body cavity of infected larvae.…”

Section: Resultssupporting

confidence: 87%

Scanning electron microscopic studies of Beauveria bassiana against Lipaphis erysimi Kalt

Sharma

Joshi

Kalia

2017

JANS

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This work was aimed to identify the LC 50 of the indigenous fungal isolates for controlling L. erysimi infestation in mustard aphid besides to probe the mechanism of action of the local isolates and comparison of the efficacy with the reference culture and commercial formulation 'Mycojaal'. Three isolates of entomopathogenic fungi Beauveria bassiana were tested for infection on nymph of Lipaphis erysimi Kalt. using scanning electron microscopy (SEM) to record any variation. The SEM revealed adhesion of spores of B.bassiana followed by penetration of L.erysimi nymph surface. It was observed that all Beauveria isolates showed little variation with respect to penetration and adhesion at different time intervals. Further, lethal concentration (LC 50 ) values of B.bassiana isolates against L. erysimi was recorded and was lowest (0.05x10 7 spores/ml) in B. bassiana MTCC 4495 and highest (0.11.X10 7 spores/ml) was recorded in native isolate F10 after 120 hours of treatment. The study has established the need for the isolation and evaluation of the indigenous Beauveria isolate. Moreover, it also exhibited the efficacy of the reference and commercially available biocontrol agents.

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Section: Resultssupporting

confidence: 87%

Scanning electron microscopic studies of Beauveria bassiana against Lipaphis erysimi Kalt

Sharma

Joshi

Kalia

2017

JANS

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“…Many histological changes in most insects due to the infection with different entomopathogenic fungi were revealed using light and electron microscopy by many investigators (Scheneider et al, 2013;Gabarty et al, 2014;Khaleil et al, 2016;Ragavendran et al, 2017). The insects cuticle, with its underlying epidermis, forms the integument.…”

Section: Results Of Histological Studymentioning

confidence: 99%

Histological changes in the larvae of the domestic mosquito Culex pipiens treated with the entomopathogenic fungus Beauveria bassiana

Farida¹,

Sonia²,

Hakima³

et al. 2018

Sci. Res. Essays

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The Culicidae are biting insects that are most harmful to people. They are almost all blood-suckers, and are responsible for the spread of many important diseases such as malaria, yellow fever and elephantiasis. Entomopathogenic microorganisms occupy an important place among the alternative methods of fighting against pests insect. The fungus, Beauveria bassiana is an entomopathogenic agent naturally present in the ecosystems and offers a very interesting potential for controlling populations of mosquitoes. Our study aims at showing the 4 th stage larvae histological changes of the domestic mosquito Culex pipiens, treated with the entomopathogenic fungus B. bassiana in suspension which corresponds to a dose of 10 7 spore/mL. In fact, after developing the individuals in the fungal solution, histological study was carried out on the following parts; cuticle, intestine, adipose tissue and hemolymph. The histological studies showed many alterations and malformation in the treated 4 th instar larvae body and tissues. The infection affected the different parts of the body, especially the cuticle, the adipose cells, and midgut, in addition to the development and the colonization of B. bassiana inside tissues. The application of B. bassiana on the cuticle of the larvae was dependent on an apparent disturbance in the structure of the cuticle or the degeneration of its different parts. The fungus infection does not stop at the level of the body walls, so it even goes to adipose tissue, epidermal cells and intestine. Based on these results, B. bassiana could be suggested as suitable biocontrol agent against C. pipiens.

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“…On the other hand, the rest of the incubated insects still clean even after prolonged incubation period to 14 days. Gabartya et al (2014) described that B. bassiana and M. anisopliae are entomopathogenic and their infection begins when conidia (asexual spores, the seeds of a fungus) attach to insect's cuticle, the spores germinate and penetrate the insect's skin and enter the host. Once the fungus penetrates the host it produces toxins that overcome the insect immune system and the hyphae penetrate through the cuticle to the outside and cause white (B. bassiana) or green (M. anisopliae) sporulation on the insect's body.…”

Section: Discussionmentioning

confidence: 99%

Isolation and identification of fungal growth on Tribolium castaneum in stored wheat flour

Bosly¹,

El-Banna²

2015

J. Entomol. Nematol.

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Stored wheat flour samples purchased from Jazan local markets in Saudi Arabia were checked for the presence of pests, insect and fungal species. The insects existing in the flour were separated and identified as red flour beetle Tribolium castaneum and from 60 individuals (dead bodies) inspected, 17 individuals exhibited abnormal deformation, decomposition and or superficial fungal growths. Incubation of the dead insects' bodies resulted in emergence of fungal growth on the surface of these bodies. Nine fungal species that belonged to eight fungal genera were isolated. Results indicate that Beauveria bassiana and Verticillium lecanii were the most dominant fungi among those isolated from T. castaneum growing in flour followed by Sporothrix sp., Hirsutella versicolor, Granulomanus sp., modern Rhizoctonia solani, Moelleriella sp., Aspergillus fumigatus and A. flavus.

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Pathogencity induced by the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae in Agrotis ipsilon (Hufn.)

Cited by 72 publications

References 13 publications

Scanning electron microscopic studies of Beauveria bassiana against Lipaphis erysimi Kalt

Scanning electron microscopic studies of Beauveria bassiana against Lipaphis erysimi Kalt

Histological changes in the larvae of the domestic mosquito Culex pipiens treated with the entomopathogenic fungus Beauveria bassiana

Isolation and identification of fungal growth on Tribolium castaneum in stored wheat flour

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