Entomopathogenic Microbes for Sustainable Crop Protection: Future Perspectives

Soumia, P. S.; Krishna, Ram; Jaiswal, Durgesh Kumar; Verma, Jay Prakash; Yadav, Janardan; Singh, Major

doi:10.1007/978-981-15-6949-4_19

Cited by 6 publications

(3 citation statements)

References 104 publications

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“…Our results corroborate the results of previous studies demonstrating significant toxicity of botanical pesticides including neem (A. indica) and tobacco (N. tabacum) extracts and of non-conventional synthetic insecticides including flubendiamide and spinetoram against different armyworm and other lepidopterous pest species (Nagal and Verma, 2015;Liu et al, 2017;Ayyub et al, 2019;Duarte et al, 2019;Thakur and Srivastava, 2019;Dáder et al, 2020;Phambala et al, 2020;Kong et al, 2021;Hernandez-Trejo et al, 2021;Thakur et al, 2022). Although most of the insect hosts become dead within few days by the bacterial or viral induced spectcima (Lacey, 2017;Soumia et al, 2021) and the observation at 5 th day of bioassay or microbial exposure was enough to see if these are effective against the S. litura larvae. Both microbial formluations (B. thuringiensis kustaki and S. litura-NPV) exhibited minimum toxicity in lab and were also the least effective as well under field conditons.…”

Section: Discussionsupporting

confidence: 90%

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

Ahmad¹,

Afzal²,

Feng³

et al. 2023

PUJZ

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Armyworm species Spodoptera litura Fabricius (Lepidoptera: Noctuidae) is one of the destructive polyphagous insect pests worldwide and has attained field-evolved resistance to most of the conventional synthetic insecticides. In this study, some previously selected most effective biorational synthetic, botanical and microbial insecticidal formulations were evaluated either alone or in binary combinations against 3 rd instar larvae of S. litura under laboratory and then under the field conditions. In both trials, insecticidal treatments affected significantly the mean mortality or reduction of S. litura larvae recorded both at two and five days posttreatment. In laboratory bioassay, combinations of flubendiamide and A. indica, flubendiamide and N. tabacum and of spinetoram and A. indica formulations caused significantly high mortality (100%), followed by B. thuringensis and S. litura-NPV (94.92%) and A. indica and B. thuringensis (93.22%) and exhibited a synergized toxicity against S. litura larvae as compared to other treatments. In two years field trials, binary combination of flubendiamide and spinetoram showed an average larval reduction of 59 -100%, followed by 100% larval reduction exhibited by flubendiamide and spinetoram alone and by the combination of flubendiamide and A. indica formulations at 5 th day of application. While, minimum larval reduction was recorded for both microbial insecticides alone and in combination for both years. Overall results of this in-vitro and in-situ evaluation demonstrate the effectiveness of biorational insecticidal formulations and recommend their incorporation in integrated management of S. litura.Novelty Statement | Laboratory and then field evaluations of some promising botanical, microbial and non-conventional synthetic insecticidal formulations against 3 rd instar larvae of armyworm (Spodoptera litura) comprise the novelty of this study.

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Section: Discussionsupporting

confidence: 90%

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

Ahmad¹,

Afzal²,

Feng³

et al. 2023

PUJZ

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“…These issues have recently grown to be of great concern on a global scale [5,6]. The yearly economic loss from biotic stressors is $40 billion and results in crop losses of 20-40% [4,7,8]. Many serious social issues were reported due to the infestation of pathogens in food crops like Phytophthora infestans pathogen, responsible for potato late blight, which wiped out a million Irish people and forced another 1.5 million to leave their homes in the 1840s; it left an indelible mark on human history [9].…”

Section: Backgroundsmentioning

confidence: 99%

Biocontrol strategies: an eco-smart tool for integrated pest and diseases management

et al. 2022

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For the burgeoning global population, sustainable agriculture practices are crucial for accomplishing the zero-hunger goal. The agriculture sector is very concerned about the rise in insecticide resistance and the Modern Environmental Health Hazards (MEHHs) that are problems for public health due to on pesticide exposure and residues. Currently, farming practices are being developed based on microbial bio-stimulants, which have fewer negative effects and are more efficient than synthetic agro-chemicals. In this context, one of the most important approaches in sustainable agriculture is the use of biocontrol microbes that can suppress phytopathogens and insects. Simultaneously, it is critical to comprehend the role of these microbes in promoting growth and disease control, and their application as biofertilizers and biopesticides, the success of which in the field is currently inconsistent. Therefore, editorial is part of a special issue titled "Biocontrol Strategies: An Eco-smart Tool for Integrated Pest and Disease Management" which focuses on biocontrol approaches that can suppress the biotic stresses, alter plant defense mechanisms, and offer new eco-smart ways for controlling plant pathogens and insect pests under sustainable agriculture.

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“…To determine which Dif isoforms activate the immune system in response to infection, we compared the capacity of the DifA mutant, the DifB mutant, and the J4R control line to survive infection with B. bassiana, an entomopathogenic fungus that causes white muscadine disease in insects (Soumia et al, 2021). Flies were infected by stabbing with a minuten pin dipped in a suspension of B. bassiana spores and scored for mortality daily for at least 10 d. All strains and both sexes showed increased mortality after stabbing inoculation (Fig.…”

Section: Difa But Not Difb Is Critical For Immune Functionmentioning

confidence: 99%

A Non-Nuclear NF-κB Modulates Alcohol Sensitivity But Not Immunity

et al. 2022

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NF-jB proteins are well known as transcription factors important in immune system activation. In this highly conserved role, they contribute to changes in behavior in response to infection and in response to a variety of other insults and experiences. In some mammalian neurons, NF-jBs can be found at the synapse and translocate to the nucleus to alter gene expression when activated by synaptic activity. Here, we demonstrate that, in Drosophila melanogaster, NF-jB action is important both inside and outside the nucleus and that the Dif gene has segregated nuclear and non-nuclear NF-jB action into different protein isoforms. The DifA isoform is a canonical nuclear-acting NF-jB protein that enters the nucleus and is important for combating infection. The DifB variant, but not the DifA variant, is found in the central nervous system (mushroom bodies and antennal lobes). DifB does not enter the nucleus and co-localizes with a synaptic protein. In males and females, a DifB mutant alters alcohol behavioral sensitivity without an obvious effect on combating infection, whereas a DifA mutant does not affect alcohol sensitivity but compromises the immune response. These data are evidence that the non-nuclear DifB variant contributes to alcohol behavioral sensitivity by a nongenomic mechanism that diverges from the NF-jB transcriptional effects used in the peripheral immune system. Enrichment of DifB in brain regions rich in synapses and biochemical enrichment of DifB in the synaptoneurosome fraction indicates that the protein may act locally at the synapse.

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Entomopathogenic Microbes for Sustainable Crop Protection: Future Perspectives

Cited by 6 publications

References 104 publications

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

Biocontrol strategies: an eco-smart tool for integrated pest and diseases management

A Non-Nuclear NF-κB Modulates Alcohol Sensitivity But Not Immunity

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