Studies on immunomodulatory effect of endophytic fungus Alternaria alternata on Spodoptera litura

Kaur, Harminder; Singh, Balbir; Thakur, Abhinay; Kaur, Amarjeet; Kaur, Sanehdeep

doi:10.1016/j.aspen.2014.11.004

Cited by 36 publications

(26 citation statements)

References 40 publications

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“…The technique has been used to observe and characterize the haemocytes of different insects in various reports [68,69] and also to observe the spores accumulation in the body of the insect after fungal infection [70][71][72][73]. However, similar types of morphological changes as observed in the present finding were demonstrated by other workers due to entomopathogenic fungi and insecticides under light microscopy [74][75][76][77].…”

Section: Discussionsupporting

confidence: 78%

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: 78%

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

et al. 2020

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“…Few studies have been done on the mechanisms of pathogenesis by C. militaris , but there is evidence that passive avoidance of immune detection is less important for successful infection compared to generalist EPF species ( Kryukov et al, 2020 ). Our finding that cordycepin was able to suppress the expression of different antimicrobial effectors is likely to be of benefit to C. militaris as an immune interference strategy, as insect defence compounds are known to operate synergistically against pathogen infections ( Kaur et al, 2015 , Butt et al, 2016 ). Therefore, the ability to suppress the activity of a range of defence compounds at once might be a more efficient - and therefore selectively advantageous - strategy than targeting individual compounds with different suppressors.…”

Section: Discussionmentioning

confidence: 89%

Cordycepin, a metabolite of Cordyceps militaris, reduces immune-related gene expression in insects

Woolley

Teakle

Prince

et al. 2020

Journal of Invertebrate Pathology

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“…e Monilia sp.) (Tabela 3), sendo a maioria deles reconhecidos como patógenos oportunistas ou fungos endofíticos (HUANG & JIANG, 2015;KAUR et al, 2015). A incidência natural do fungo entomopatogênico Metarhizium spp.…”

Section: Resultsunclassified

Cigarrinhas-das-pastagens em Santa Catarina: avaliação do complexo de espécies e da incidência natural de fungos entomopatogênicos

Ribeiro

Cazarotto

2019

RAC

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Cigarrinhas-das-pastagens em Santa Catarina: avaliação do complexo de espécies e da incidência natural de fungos entomopatogênicos Leandro do Prado Ribeiro¹ e Angélica Ribolli Cazarotto² Resumo-Levantamentos sistemáticos foram realizados de modo a determinar a proporção de espécies no complexo de cigarrinhas-das-pastagens incidentes em pastagens estabelecidas em diferentes municípios de Santa Catarina e avaliar a incidência natural de fungos entomopatogênicos associados aos espécimens coletados. Para isso, cigarrinhas adultas foram coletadas em pastagens de grama-bermuda, Cynodon dactylon cv. Tifton 85, sem histórico da aplicação de micoinseticidas, em 12 municípios do estado usando rede de varredura. Em laboratório, a proporção de espécies de cigarrinhas foi determinada e a mortalidade natural observada durante dez dias, sendo os exemplares mortos desinfectados e mantidos em placas de Elisa para avaliação da incidência de fungos, com posterior isolamento dos mesmos. Com base nas amostras obtidas, foram identificadas sete espécies de cigarrinhas (Notozulia entreriana, Deois schach, Deois knoblauchii, Mahanarva integra, Deois flavopicta, Deois flexuosa e Deois incompleta), sendo N. entreriana e D. schach classificadas como superfrequentes, constantes, superdominantes e superabundantes de acordo com a análise faunística empregada. Além disso, foram encontradas 15 espécies de fungos em associação às cigarrinhas (Alternaria sp., Aspergillus sp., Aspergillus niger, Bipolaris sp., Cladosporium sp., Curvularia sp., Metarhizium sp., Mucor sp., Nigrospora sp., Penicillium sp., Pestalotia sp., Pithomiices sp. e Monilia sp.), sendo a maioria delas reconhecidas como patógenos oportunistas, saprofitos ou fungos endofíticos. A incidência natural do fungo entomopatogênico Metarhizium spp. foi baixa em todas as áreas amostradas (0,7% do total de cigarrinhas coletadas). Termos para indexação: Cercopidae; amostragem populacional; Notozulia entreriana; Deois schach; controle microbiano. Spittlebugs in Santa Catarina: assessment of species complex and natural incidence of entomopathogenic fungi Abstract-Systematic surveys were conducted to determine the proportion of species of spittlebugs and assess the natural incidence of entomopathogenic fungi species on populations collected in pastures located in different municipalities of the state of Santa Catarina, Brazil. For such, adult specimens were collected in pastures of bermudagrass, Cynodon dactylon cv. Tifton 85, without application of mycoinsecticides from 12 municipalities using a sweeping net device. In the laboratory conditions, the proportion of spittlebugs species and their natural mortality was observed for 10 days. Their cadavers were stored and disinfected, being kept on Elisa plates to assess the incidence of fungi species and their subsequent isolation. Based on obtained samples, seven spittlebug species were identified (Notozulia entreriana, Deois schach, Deois knoblauchii, Mahanarva integra, Deois flavopicta, Deois flexuosa, Deois incompleta), being N. entreriana and...

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Studies on immunomodulatory effect of endophytic fungus Alternaria alternata on Spodoptera litura

Cited by 36 publications

References 40 publications

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

Schizophyllum commune induced oxidative stress and immunosuppressive activity in Spodoptera litura

Cordycepin, a metabolite of Cordyceps militaris, reduces immune-related gene expression in insects

Cigarrinhas-das-pastagens em Santa Catarina: avaliação do complexo de espécies e da incidência natural de fungos entomopatogênicos

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