Biocontrol of Bean and Wheat Aphids by Fungi Isolated from Indigenous and Invasive Insects Collected from Different Locations in Minia Governorate, Egypt

Galil, F. A. Abdel; Moharram, A. M.; Mahmoud, Mervat; Hafez, W. M.M.

doi:10.21608/eajbsf.2019.58771

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…Scopulariopsis has already been isolated from insect larvae (Sandoval-Denis et al 2016 ) or adults (Yoder et al 2003 ), apparently being an entomopathogenic agent. Scopulariopsis brevicaulis isolated from aphids demonstrated potential for the biocontrol of these hosts (Abdel Galil et al 2019 ). Fungal phytopathogens can also be affected by Scopulariopsis .…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Entomopathogenic Potential of Fungal and Bacterial Isolates from Fall Armyworm Cadavers Against Spodoptera frugiperda Caterpillars and the Adult Boll Weevil, Anthonomus grandis

Dos Santos Moreira,

Marinho,

Neves

et al. 2024

Neotrop Entomol

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Increased attention is being focused on the biological control of agricultural pests using microorganisms, owing to their potential as a viable substitute for chemical control methods. Insect cadavers constitute a potential source of entomopathogenic microorganisms. We tested whether bacteria and fungi isolated from Spodoptera frugiperda (JE Smith) cadavers could affect its survival, development, egg-laying pattern, and hatchability, as well as induce mortality in Anthonomus grandis Boheman adults. We isolated the bacteria Enterobacter hormaechei and Serratia marcescens and the fungi Scopulariopsis sp. and Aspergillus nomiae from fall armyworm cadavers and the pest insects were subjected to an artificial diet enriched with bacteria cells or fungal spores to be tested, in the case of S. frugiperda, and only fungal spores in the case of A. grandis. Enterobacter hormaechei and A. nomiae were pathogenic to S. frugiperda, affecting the survival of adults and pupae. The fungus Scopulariopsis sp. does not affect the survival of S. frugiperda caterpillars and pupae; however, due to late action, moths and eggs may be affected. Aspergillus nomiae also increased mortality of A. grandis adults, as well as the development of S. frugiperda in the early stages of exposure to the diet, as indicated by the vertical spore transfer to offspring and low hatchability. Enterobacter hormaechei and A. nomiae are potential biocontrol agents for these pests, and warrant further investigation from a toxicological point of view and subsequently in field tests involving formulations that could improve agricultural sustainability practices.

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Section: Discussionmentioning

confidence: 99%

Assessment of the Entomopathogenic Potential of Fungal and Bacterial Isolates from Fall Armyworm Cadavers Against Spodoptera frugiperda Caterpillars and the Adult Boll Weevil, Anthonomus grandis

Dos Santos Moreira,

Marinho,

Neves

et al. 2024

Neotrop Entomol

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On the enzymes’ actions of entomopathogenic fungi against certain indigenous and invasive insect pests

Moharram

Abdel-Galil

Hafez

2021

Egypt J Biol Pest Control

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Background Pathogenicity of entomopathogenic fungi (EPF) depends mainly on their ability to produce efficient enzymes, which degrade insect’s integument and other cellular components. Lipases are the first enzymes secreted by these fungi, then proteases, phospholipases, and chitinases. Results Twenty-six fungal strains, isolated from the aphids, Aphis sp., Linnaeus (Homoptera, Aphididae), the tomato leaf minor, Liriomyza trifolii, Burgess (Diptera, Agromyzidae) (indigenous insects), the red palm weevil, Rhynchophorus ferrugineus, Olivier (Coleoptera, Curculionidae), and the peach fruit fly, Bactrocera zonata, Saunders (Diptera, Tephritidae) (invasive insects) were tested for their enzymatic activities. Results showed that the majority of these strains were able to produce lipolytic enzymes with the most active being Aspergillus niger, Botryotrichum atrogriseum, Cochliobolus spicifer, Fusarium chlamydosporum, and F. proliferatum. Phospholipase was successfully produced by 73.1% of the tested strains among which Aspergillus flavus, A. niger, Mucor racemosus, Pochonia chlamydosporia var. catenulata, and Scopulariopsis brevicaulis were the highest producers. Proteolytic enzymes were detected in cultures of all the fungal strains except Aspergillus chevalieri and M. racemosus. The best proteolytic strain was S. brevicaulis followed by A. flavus, A. sydowii, and F. semitectum. The chitinolytic ability of the fungal strains was generally weak and the relatively active species belonged to A. flavus, A. niger, B. atrogriseum, F. chlamydosporum, F. solani, S. brevicaulis, and Nigrospora oryzae. Quantitative determination of chitinase revealed that the enzyme concentration ranged from 3.478 to 6.44 IU/ml. Conclusion Most of the isolated fungi had enzymatic activities, but A. niger, F. semitectum, F. solani, F. chlamydosporum, P. chlamydosporia var. catenulata, and S. brevicaulis, were the most active ones.

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Identification of entomopathogenic fungi from insect pests of mango and their efficacy against mango hoppers

KALE,

HALDAVNEKAR,

MUNJ

et al. 2024

JBC

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Surveys were made in the Sindhudurg and Ratnagiri districts of the Konkan region of Maharashtra, India during 2017-2018 for the collection of mummified insect samples from different mango orchards in order to isolate entomopathogenic fungi. The collected mummified insect samples were brought to the laboratory and incubated on PDA plates. Those samples showing growth on PDA plates were sub-cultured until pure fungus growth was obtained. They were tested for their pathogenicity in the laboratory and 14 samples were found pathogenic to mango hoppers. They were sent to NFCCI, Agarkar Research Institute, Pune for identification. Out of the 14 entomopathogenic samples identified, 7 were from Genus Fusarium, 4 were mixed cultures of Fusarium and Aspergillus, and one sample each from Genus Trichoderma, Mucor and Nigrospora. Studies showed that Fusarium species were the most common entomopathogenic fungi associated with mango pests, especially mango hoppers. Laboratory evaluation of these samples showed that amongst different isolated entomogenus fungi, <i>Fusarium semitectum</i> sample 16(1) was more pathogenic to mango hoppers than other fungal samples. Field evaluation of this sample also proved its efficacy.

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Biocontrol of Bean and Wheat Aphids by Fungi Isolated from Indigenous and Invasive Insects Collected from Different Locations in Minia Governorate, Egypt

Cited by 4 publications

References 17 publications

Assessment of the Entomopathogenic Potential of Fungal and Bacterial Isolates from Fall Armyworm Cadavers Against Spodoptera frugiperda Caterpillars and the Adult Boll Weevil, Anthonomus grandis

Assessment of the Entomopathogenic Potential of Fungal and Bacterial Isolates from Fall Armyworm Cadavers Against Spodoptera frugiperda Caterpillars and the Adult Boll Weevil, Anthonomus grandis

On the enzymes’ actions of entomopathogenic fungi against certain indigenous and invasive insect pests

Identification of entomopathogenic fungi from insect pests of mango and their efficacy against mango hoppers

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