Pathogenicity of indigenous soil isolate of Bacillus thuringiensis to Helicoverpa armigera Hübner 1809 (Lepidoptera: Noctuidae)

Majeed, Muhammad Zeeshan; Riaz, Muhammad; Khan, Muneeba Arif; Ma, Chun‐Sen; Ahmad, Salman

doi:10.1186/s41938-018-0041-4

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…This is similar to a report by El Husseini (2019) who recorded an increase on the mortality rate of the second instar larvae of S. recurvalis fed on diet mixed with different concentration of B. thuringiensis Kurstaki. Similar to this report also is a report by Majeed et al (2018)…”

Section: Wwwujmrumyuedungsupporting

confidence: 92%

Assessment of the Larvicidal Potency of Bacillus thuringiensis Against the Moth of Spoladea recurvalis on Amaranths Plant

Muhammed¹,

Yahaya²,

Machido³

2022

UJMR

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The control of Spoladeare curvalis, a major pest of amaranth plant, has been through the use of synthetic pesticides which have been reported to have detrimental effects. This study was aimed at assessing the larvicidal potency of B. thuringiensis against the larvae of Spoladea recurvalis on amaranth plant. The assessment of the larvicidal potency of B. thuringiensis isolates from cow range land and refuse dump sites in Zaria metropolis habouringCry1 gene (CR2, CR4, RD1) was carried out by spraying spore crystal mixture of B. thuringiensis isolates on amaranth plants infested with Spoladea recurvalis larvae. The mortality of S. recurvalis larvae, under a screen house were assessed after 24, 48 and 72hours of exposure to the spore crystal mixture of B. thuringiensis isolates. Spore crystal mixtures of B. thuringiensis isolates were effective in causing larvae mortality with more than 60% mean mortality rate of S. recurvalis larvae after 72hours of exposure. The mortality rate of Spoladea rescurvalis increased with increase in exposure period. Spore crystal mixture of Bacillus thuringiensis isolates should be considered as an alternative to synthetic pesticides for the control of Spoladea recurvalis larvae on amaranth plant. Keywords: Bacillus thuringiensis; spore; larvae; amaranth; larvicidal.

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Section: Wwwujmrumyuedungsupporting

confidence: 92%

Assessment of the Larvicidal Potency of Bacillus thuringiensis Against the Moth of Spoladea recurvalis on Amaranths Plant

Muhammed¹,

Yahaya²,

Machido³

2022

UJMR

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“…Al-Azzazy et al (2020) [32] also tested the effectiveness of Bacillus subtilis (2.470 × 10 8 CFU/mL) and Bacillus qassimus (3.320 × 10 8 CFU/mL) against Tetranychus urticae, infesting eggplant, under laboratory conditions and found that seven days post-treatment with B. subtilis and B. qassimus caused 72.22 and 70.74% reductions in mite populations, respectively. Similarly, at 96 h after exposure, a Bacillus thuringiensis strain was reported to have median lethal doses (LC 50 ) against larvae of Helicoverpa armigera ranging from 1.7 to 1.8 × 10 5 CFU/mL [33].…”

Section: Discussionmentioning

confidence: 99%

Rhizospheric Bacillus spp. Exhibit Miticidal Efficacy against Oligonychus coffeae (Acari: Tetranychidae) of Tea

Bora,

Gogoi,

Deshpande

et al. 2023

Microorganisms

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Oligonychus coffeae (Acari: Tetranychidae), popularly known as red spider mite (RSM) is one of the major pests of commercial tea (Camellia sinensis (L.) O. Kuntze) plantation world over. Many attempts have been made in the past to control this devastating pest using a variety of microbial bioagents, however, area-wise field success is very limited. We carried out an in vitro study to explore the potential of rhizospheric Bacillus spp. (B. amyloliquefaciens BAC1, B. subtilis LB22, and B. velezensis AB22) against O. coffeae through adulticidal and ovicidal activity. The 100% adult and egg mortality was observed with bacterial suspension (1 × 109 CFU/mL) by B. velezensis AB22, showing the lowest LC50 values for both adults and eggs of O. coffeae, i.e., 0.28 × 105 and 0.29 × 105, respectively. The study also throws some insights into the underlying mechanism through electron microscopy study and identification of some putative pesticidal metabolites from all the species. The three Bacillus species were observed to have four commonly secreted putative bioactive secondary metabolites, brevianamide A, heptadecanoic acid, thiolutin, and versimide responsible for their bio-efficacy against O. coffeae. The outcome of our study provides a strong possibility of introducing Bacillus spp. as a biological miticide and developing synthetic metabolites mimicking the mechanistic pathway involved in microbial bioefficacy.

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“…Ebrahimi et al [68] studied the effect of the entomopathogenic nematode, Steinernema feltiae Filipjev (Rhabditida: Steinernematidae), on survival and plasma phenoloxidase activity of H. armigera in the lab. Another study conducted by Majeed et al [69] documented the pathogenicity of indigenous soil isolate of Bacillus thuringiensis Berliner (Bacillales: Bacillaceae) on H. armigera. Additionally, Mishra and Sobita [70] demonstrated that B. bassiana recorded significant larval mortality against H. armigera in the field.…”

Section: Discussionmentioning

confidence: 99%

Potential Use of Fusarium Isolates as Biological Control Agents: Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) Case Study

Mantzoukas

Kitsiou

Lagogiannis³

et al. 2022

Applied Sciences

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The cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is a notorious agricultural pest with world-wide distribution, extreme polyphagy, high mobility and fecundity, facultative diapause, and significant resistance to chemical insecticides. Isolates from various Fusarium species were collected from soil, identified, and tested for their entomopathogenicity against H. armigera larvae in field experiments. Fungi of the genus Fusarium are ubiquitous and include phytopathogenic as well as entomopathogenic strains. Seven Fusarium species were identified and tested, including: F. algeriense, F. chlamydosporum var. chlamydosporum, F. fujikuroi, F. longifundum, F. pseudoanthophilum, F.solani, and F. tonkinense. All the collected fungi demonstrated a notable insecticidal effect on H. armigera larvae in field conditions, while some proved to be significantly lethal. The larval mortality of H. armigera ranged from 10 (103 conidia/mL) to 91% (108 conidia/mL) after 9 days (216 h). Larval survival time in treated plants ranged from 95 h (108 conidia/mL) to 208 h (103 conidia/mL). According to our results, F. solani isolate displayed the highest toxicity against H. armigera larvae and could be considered as a promising biocontrol agent of this serious pest.

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Pathogenicity of indigenous soil isolate of Bacillus thuringiensis to Helicoverpa armigera Hübner 1809 (Lepidoptera: Noctuidae)

Cited by 5 publications

References 16 publications

Assessment of the Larvicidal Potency of Bacillus thuringiensis Against the Moth of Spoladea recurvalis on Amaranths Plant

Assessment of the Larvicidal Potency of Bacillus thuringiensis Against the Moth of Spoladea recurvalis on Amaranths Plant

Rhizospheric Bacillus spp. Exhibit Miticidal Efficacy against Oligonychus coffeae (Acari: Tetranychidae) of Tea

Potential Use of Fusarium Isolates as Biological Control Agents: Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) Case Study

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