Effects of a Pathogenic<i>Beauveria bassiana</i>(Hypocreales: Cordycipitaceae) Strain on Detoxifying and Protective Enzyme Activities in<i>Xylotrechus rusticus</i>(Coleoptera: Cerambycidae) larvae

Ding, Junnan; Zhang, Huihui; Chi, Defu

doi:10.1653/024.098.0419

Cited by 22 publications

(28 citation statements)

References 26 publications

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“…The three enzymes work synergistically, keeping the ROS level low and prohibiting oxidative damage. The overall activity trends were consistent with previous research [38,[44][45][46][47][48][49][50][51].…”

Section: Discussionsupporting

confidence: 91%

“…SOD catalyzes the dismutation of superoxide anion to hydrogen peroxide, which is subsequently detoxified to oxygen and water by catalase, ascorbate peroxidase or GST. Previous studies have demonstrated that, after fungal infection, protection systems of insects are activated to ward off infection and to maintain the normal physiological activities [38][39][40][41][42]. In our study, a significant increase in CAT, APOX and SOD activities were noticed in larvae of Spodoptera litura after treatment with ethyl acetate extract of Schizophyllum commune.…”

Section: Discussionsupporting

confidence: 60%

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Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

et al. 2020

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Background: In the last few decades, considerable attention has been paid to fungal endophytes as biocontrol agents, however little is known about their mode of action. This study aimed to investigate the toxic effects of an endophytic fungus Schizophyllum commune by analyzing activities of antioxidant and detoxifying enzymes as well as morphology of haemocytes using Spodoptera litura as a model. Results: Ethyl acetate extract of S. commune was fed to the larvae of S. litura using the artificial diet having 276.54 μg/ml (LC 50 of fungus) concentration for different time durations. Exposed groups revealed significant (p ≤ 0.05) increase in the activities of various enzymes viz. Catalase, Ascorbate peroxidase, Superoxide dismutase, Glutathione-S-Transferase. Furthermore, haemocytes showed various deformities like breakage in the cell membrane, cytoplasmic leakage and appearance of strumae in the treated larvae. A drastic reduction in the percentage of normal haemocytes was recorded in the treated groups with respect to control. Conclusion: The study provides important information regarding the oxidative stress causing and immunosuppressant potential of S. commune against S. litura and its considerable potential for incorporation in pest management programs.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 60%

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

et al. 2020

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“…The activities of GST and CAT were significantly inhibited, indicating that compound 2 could inhibit the activity of these detoxifying and protective enzymes after entering into the larva of H. armigera , making it difficult to be metabolized, and thus, enhancing the toxicity to H. armigera. Some studies had shown that the activities of GST and CAT in the insect were inhibited after treatment by pesticides [ 20 ]. Besides antioxidant enzymes, insects also have other antioxidant mechanisms, such as trehalose and α-tocopherol, which also play an active role in oxidative stress [ 21 , 22 ].…”

Section: Resultsmentioning

confidence: 99%

Insecticidal Activities of Chloramphenicol Derivatives Isolated from a Marine Alga-Derived Endophytic Fungus, Acremonium vitellinum, against the Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

et al. 2018

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A great deal of attention has been focused on the secondary metabolites produced by marine endophytic fungi, which can be better alternatives to chemicals, such as biopesticides, for control of polyphagous pests. On the basis of its novel biocontrol attributes, chemical investigation of a marine alga-derived endophytic fungus, Acremonium vitellinum, resulted in the isolation of three chloramphenicol derivatives (compounds 1–3). Their chemical structures were elucidated by detailed analysis of their nuclear magnetic resonance spectra, high-resolution electrospray ionization mass spectrometry, and by comparison with the data available in the literature. In this paper, compound 2 was firstly reported as the natural origin of these fungal secondary metabolites. The insecticidal activities of compounds 1–3 against the cotton bollworm, Helicoverpa armigera, were evaluated. The natural compound 2 presented considerable activity against H. armigera, with an LC50 value of 0.56 ± 0.03 mg/mL (compared to matrine with an LC50 value of 0.24 ± 0.01 mg/mL). Transcriptome sequencing was used to evaluate the molecular mechanism of the insecticidal activities. The results presented in this study should be useful for developing compound 2 as a novel, ecofriendly and safe biopesticide.

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“…Ding et al [38] and Jia et al [58] observed the similar trend in GST activity after exposure to fungus B.…”

Section: Discussionmentioning

confidence: 63%

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

Kaur

Chadha

Kaur

et al. 2020

Preprint

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Background: In the last few decades, considerable attention has been paid to fungal endophytes as biocontrol agents, however little is known about their mode of action. This study aimed to investigate the toxic effects of an endophytic fungus Schizophyllum commune by analyzing activities of antioxidant and detoxifying enzymes as well as morphology of haemocytes using Spodoptera litura as a model. Results: Ethyl acetate extract of S.commune was fed to the larvae of S.litura using the artificial diet having 276.54µg/ml (LC 50 of fungus) concentration for different time durations. Exposed groups revealed, significant (p≤0.05) increase in the activities of various enzymes viz. Catalase, Ascorbate peroxidase, Superoxide dismutase, Glutathione-S-Transferase. Furthermore, haemocytes showed various deformities like breakage in the cell membrane, cytoplasmic leakage and appearance of strumae in the treated larvae. A drastic reduction in the percentage of normal haemocytes was recorded in the treated groups with respect to control. Conclusion: The study provides important information regarding the oxidative stress causing and immunosuppressant potential of S.commune against S.litura and its considerable potential for incorporation in pest management programmes.

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Effects of a PathogenicBeauveria bassiana(Hypocreales: Cordycipitaceae) Strain on Detoxifying and Protective Enzyme Activities inXylotrechus rusticus(Coleoptera: Cerambycidae) larvae

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 22 publications

References 26 publications

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

Insecticidal Activities of Chloramphenicol Derivatives Isolated from a Marine Alga-Derived Endophytic Fungus, Acremonium vitellinum, against the Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

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