Virulence of entomopathogenic fungi against fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) under laboratory conditions

Frontiers in Physiology, Journal Year: 2023, Volume and Issue: 14

Published: March 8, 2023

Maize is an essential crop of China. The recent invasion Spodoptera frugiperda, also known as fall armyworm (FAW), poses a danger to the country's ability maintain sustainable level productivity from this core crop. Entomopathogenic fungi (EPF) Metarhizium anisopliae MA, Penicillium citrinum CTD-28 and CTD-2, Cladosporium sp. BM-8, Aspergillus SE-25 SE-5, CA-7, Syncephalastrum racemosum SR-23 were tested determine their effectiveness in causing mortality second instars, eggs, neonate larvae. P. CTD-28, BM-8 caused highest levels egg mortality, with 86.0, 75.3, 70.0%, respectively, followed by CTD-2 (60.0%). Additionally, M. MA neonatal 57.1%, (40.7%). In addition, decreased feeding efficacy instar larvae FAW 77.8, 75.0, 68.1%, (59.7%). It possible that EPF will play important role microbial agents against after further research conducted on these field.

Language: Английский

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Biocontrol potential of native isolates of Beauveria bassiana against cotton leafworm Spodoptera litura (Fabricius)

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: May 23, 2023

The entomopathogenic fungus (EPF), Beauveria bassiana, is reported as the most potent biological control agent against a wide range of insect families. This study aimed to isolate and characterize native B. bassiana from various soil habitats in Bangladesh evaluate bio-efficacy these isolates an important vegetable pest, Spodoptera litura. Seven Bangladeshi soils were characterized using genomic analysis. Among isolates, TGS2.3 showed highest mortality rate (82%) 2nd instar larvae S. litura at 7 days after treatment (DAT). was further bioassayed different stages found that induced 81, 57, 94, 84, 75, 65, 57% overall egg, neonatal 1st, 2nd, 3rd, 4th, 5th larvae, respectively, over DAT. Interestingly, with resulted pupal adult deformities well decreased emergence Taken together, our results suggest potential biocontrol destructive pest However, studies are needed this promising planta field conditions.

Language: Английский

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Dual role of endophytic entomopathogenic fungi: induce plant growth and control tomato leafminer Phthorimaea absoluta

Pest Management Science, Journal Year: 2023, Volume and Issue: 79(11), P. 4557 - 4568

Published: July 11, 2023

Entomopathogenic fungi (EPF) are multifunctional microorganisms acting not only as biopesticides against insect pests but also endophytes which regulate plant growth. The tomato leafminer, Phthorimaea absoluta (Tuta absoluta) is a devastating invasive pest of tomatoes worldwide. However, effective alternatives needed for sustainable management this pest. In study, the functional effects five EPF isolates Metarhizium flavoviride, M. anisopliae, rileyi, Cordyceps fumosorosea and Beauveria bassiana were evaluated on growth promotion protection P. absoluta.When directly sprayed with conidia, larvae showed high cumulative mortality 100% to anisopliae under 1 × 108 conidia/mL, whereas B. bassiana, C. rileyi caused 92.65%, 92.62%, 92.16% 68.95%, respectively. Moreover, all can successfully colonize plants, whilst colonization rate each depends inoculation method used. most efficient flavoviride was root dipping, it coating seed, foliage spraying. highest obtained by flavoviride. Meanwhile, these promoted upon inoculation. Furthermore, endophytic plants negatively affected performance absoluta, among them strong negative absoluta.Our results highlight potential incorporating entomopathogenic in integrated practices protect absoluta. © 2023 Society Chemical Industry.

Language: Английский

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Biotic Potential Induced by Different Host Plants in the Fall Armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae)

Insects, Journal Year: 2022, Volume and Issue: 13(10), P. 921 - 921

Published: Oct. 12, 2022

Fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a polyphagous insect pest of many important crops. To evaluate the influence host plants on biology and survival Pakistani population S. frugiperda, we examined life table parameters raised maize, sorghum, wheat, rice. The development rate was significantly higher maize crop than other three plants. Different larval diets affected time fecundity. attained fastest (16 days) slowest (32.74 Adult females from maize-fed larvae laid 1088 eggs/female, those sorghum-fed 591.6 wheat-fed 435.6 rice-fed 49.6 eggs/female. Age stage-specific also indicated fecundity, expectancy, hosts. Larval had significant varying effect finite intrinsic increase rates, reflecting that most suitable diet. findings present study are useful for predicting dynamics especially in areas cultivating Poaceae crops, except to develop sustainable integrated management strategies this pest.

Language: Английский

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Endophytic Colonization by Beauveria bassiana and Metarhizium anisopliae in Maize Plants Affects the Fitness of Spodoptera frugiperda (Lepidoptera: Noctuidae)

Microorganisms, Journal Year: 2023, Volume and Issue: 11(4), P. 1067 - 1067

Published: April 19, 2023

The fall armyworm, Spodoptera frugiperda (Noctuidae; Lepidoptera), is a serious threat to food security as it has the potential feed on over 353 plant species. To control this insect pest, endophytic colonization of entomopathogenic fungi (EPF) in plants being considered safer and more effective alternative. This study evaluated efficacy two EPFs, Beauveria bassiana Metarhizium anisopliae, for using foliar spray seed treatment methods maize plants, their impact survival, development, fecundity S. frugiperda. Both EPF effectively colonized with methods, resulting 72–80% 50–60% rates, respectively, 14 days after inoculation. negatively impacted development Larvae feeding EPF-inoculated leaves had slower (21.21 d M. anisopliae 20.64 B. bassiana) than (20.27 d). rate was also significantly reduced 260.0–290.1 eggs/female both applications compared (435.6 eggs/female). Age-stage-specific parameters showed lower fecundity, life expectancy, survival when they fed untreated leaves. Furthermore, EPFs significant effect population such intrinsic (r = 0.127 d−1 bassiana, r 0.125 anisopliae) finite (λ 1.135 λ 1.1333 0.133 1.146 d−1). These findings suggest that can be used Therefore, these should integrated into pest management programs pest.

Language: Английский

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Nematophagous Fungi: A Review of Their Phosphorus Solubilization Potential

Microorganisms, Journal Year: 2023, Volume and Issue: 11(1), P. 137 - 137

Published: Jan. 5, 2023

Nematophagous fungi (NF) are a group of diverse fungal genera that benefit plants. The aim this review is to increase comprehension about the importance nematophagous and their role in phosphorus solubilization favor its uptake agricultural ecosystems. They use different mechanisms, such as acidification medium, organic acids production, secretion enzymes metabolites promote bioavailability for This study summarizes processes solubilization, addition mechanisms action NF on crops, evidencing need include innovative alternatives implementation microbial resources management plans. In addition, it provides information help understand effect make available plants, showing how these biological means uptake, thus improving productivity yield.

Language: Английский

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Effectiveness of botanical pesticide combined with Beauveria bassiana on mortality, nutritional index and fecundity of Spodoptera litura L.

Cogent Food & Agriculture, Journal Year: 2024, Volume and Issue: 10(1)

Published: Feb. 29, 2024

This study aimed to evaluate the effect of botanical pesticides mixed with entomopathogenic Beauveria bassiana on growth and development Spodoptera litura. adopted an experimental approach using a completely randomized design consisting three treatments (botanical pesticides, B. bassiana, mixture bassiana) two control. The treatment control had five concentration levels were repeated four times. test used dip feed method. relation between S. litura mortality was analyzed probit analysis. Differences in means ANOVA. results showed that both single decreased relative consumption, inhibited rate reduced fecundity activity at LC50 level has shown synergistic effect. Thus, could be developed as alternative pesticide for sustainable biological

Language: Английский

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The Potential and Green Chemistry Attributes of Biopesticides for Sustainable Agriculture

Sustainability, Journal Year: 2022, Volume and Issue: 14(21), P. 14417 - 14417

Published: Nov. 3, 2022

Chemotherapy has advanced modern agriculture with costly side effects such as the extinction of beneficial species, resistant pest resurgence, environmental pollution, tainted food consumption, and health implications. Attention is now focused on biopesticides a solution to abovementioned disadvantages. Additionally, there growing need understand range relative effectiveness in controlling pests promoting sustainable agriculture. The latter major driver Sustainable Development Goals (SDGs). In comparison synthetic pesticides, offer nearly similar protection against most notorious pests, except Albugo candida (oomycetes), Ustilago maydis (fungi), Phytomonas spp. (protozoa), Nacobbus aberrans (nematode), Cyperus rotundus (weed). This study shows that viruses are more vulnerable essential oils, nematodes weeds natural enemies, herbivorous insects biochemical insecticides, plant pathogens plant-incorporated protectants microbial pesticides. work also demonstrates it preferable use plant-derived field concurrently. Incorporating these findings into large-scale farming via integrated management method would improve outcome (SA), which connects 11 17 SDGs. Despite their proven efficacy attributes, have some deficiencies, slow action short shelf life span, can be improved by omics, RNA interference, nano-based technologies. technologies provides relevant prospects for improving existing discovering developing new bio-controlling agents (BCA).

Language: Английский

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SfMBP: A novel microbial binding protein and pattern recognition receptor in the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae)

Developmental & Comparative Immunology, Journal Year: 2024, Volume and Issue: 154, P. 105142 - 105142

Published: Feb. 2, 2024

Language: Английский

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The fungal protease BbAorsin contributes to growth, conidiation, germination, virulence, and antiphytopathogenic activities in Beauveria bassiana (Hypocreales: Cordycipitaceae)

Pesticide Biochemistry and Physiology, Journal Year: 2024, Volume and Issue: 202, P. 105936 - 105936

Published: April 29, 2024

Language: Английский

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