Entomopathogenic fungi and their relevance in sustainable agriculture: A review

Sharma, Amrit; Sharma, Shaurav; Yadav, Pankaj Kumar

doi:10.1080/23311932.2023.2180857

Cited by 18 publications

(13 citation statements)

References 112 publications

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“…At present, Beauveria , Metarhizium , Cordyceps have been researched deeply [ 7 ]. Among them, Metarhizium , as one of extensively studied and applied entomopathogenic fungi, has been used to control multiple pests in multifarious environments [ 8 , 9 ]. Metarhizium robertsii is a typical entomopathogenic fungus.…”

Section: Introductionmentioning

confidence: 99%

A New Strain of Metarhizium robertsii Isolated from Loess Plateau and Its Virulence and Pathological Characteristics against Monochamus alternatus

Zheng,

Shi,

Wang

2024

Microorganisms

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Monochamus alternatus is a serious trunk-boring pest. The isolation and utilization of entomopathogenic fungi to manage M. alternatus is important. Here, a new strain GQH6 of Metarhizium robertsii, isolated from the Loess Plateau, was identified morphologically and molecularly. The virulence of the strain GQH6 against the third-instar larvae of M. alternatus was studied. Then, the pathological process, including symptom observation and histopathological observation, was also researched. The corrected mortality was 100% at 109 and 108 conidia/mL, and 88.89 ± 5.88% at 107 conidia/mL. The LC50 was 1.93 × 106 conidia/mL and the LC90 was 1.35 × 107 conidia/mL. And the LT50 of the strain GQH6 was 3.96 days at 109 conidia/mL, and 4.99 days at 108 conidia/mL. These virulence indices showed high virulence against M. alternatus larvae. In addition, the symptoms of the infected M. alternatus larvae were obvious. After one day, dark spots appeared and increased in number. By four days, white mycelia appeared. Finally, the larvae body became green. Similarly, the histopathological changes after infection were obvious, mainly manifested in muscle tissue rupture, adipose tissue fracture and midgut disintegration. These results demonstrated that the M. robertsii strain GQH6 isolated from the Loess Plateau was highly virulent against M. alternatus larvae of the third instar.

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Section: Introductionmentioning

confidence: 99%

A New Strain of Metarhizium robertsii Isolated from Loess Plateau and Its Virulence and Pathological Characteristics against Monochamus alternatus

Zheng,

Shi,

Wang

2024

Microorganisms

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“…Numerous studies have investigated entomopathogenic fungi, conidia, and their chemical components for controlling T. absoluta insect pests, demonstrating their high effectiveness ( Zekeya et al, 2019 ; Bali and Singla, 2022 ). The entomopathogenic fungi B. bassiana and Metarhizium anisopliae have shown greater virulence against a wide range of medical and agricultural insect pests ( Contreras et al, 2014 ; Gebremariam et al, 2021 ; Wang et al, 2021 ; Bapfubusa Niyibizi et al, 2023 ; Sharma et al, 2023 ; Swathy et al, 2023 ; Vivekanandhan et al, 2023 ). The cuticle-degrading enzyme chitinase, derived from the entomopathogenic fungi B. bassiana , exhibited remarkable insecticidal activity within 5 days against larvae of B. dorsalis ( Ullah et al, 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Biocontrol effects of chemical molecules derived from Beauveria bassiana against larvae of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Vivekanandhan,

Swathy,

Alahmadi

et al. 2024

Front. Microbiol.

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In this study, we conducted tests on the isolation, identification, characterization, and extraction of chemical molecules from Beauveria bassiana against Tuta absoluta larvae. The enzyme responses of T. absoluta to the crude extract were examined 24 h after treatment, and the number of dead larvae was calculated 24 and 48 h after treatment. Molecular docking studies were conducted to assess the interaction of important molecules with the acetylcholinesterase enzyme. The larvicidal activity of crude chemicals from fungi was high 24 h after treatment, with LC50 and LC90 values of 25.937 and 33.559 μg/mL, respectively. For a period of 48 h, the LC50 and LC90 values were 52.254 and 60.450 μg/mL, respectively. The levels of acetylcholinesterase, α-carboxylesterase, and β-carboxylesterase enzymes were lower in the treatment group after 24 h compared to the control group. The GC-MS test revealed that the crude extract consisted mainly of 9,10-octadecadienoic acid, which was the primary compound. Docking results indicated that 9,10-octadecadienoic acid showed a strong interaction with acetylcholinesterase (AChE). Our findings suggest that the chemical molecule 9,10-octadecadienoic acid derived from the entomopathogenic fungus B. bassiana is more toxic to T. absoluta larvae. We plan to conduct studies to test its effectiveness in semi-field conditions and to evaluate its stability in field conditions. We believe that this 9,10-octadecadienoic acid molecule could be used to control T. absoluta larvae in the near future without causing environmental pollution.

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“…The most commonly used EPF species are Beauveria bassiana and Cheatomium globosum. Extensive researches have shown that the Paecilomyces lilacinus was applied as a bioinsecticides against various agricultural and forest insect pests [15,16,17,18,19] . It has previously been evaluated its efficacy against the tomato leafminer.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of some Entomopathogenic Fungi Against Tomato Leaf Miner Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in Iraq

Issa,

Matrood,

Al-Farttoosy

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The most important tool for biological management of several insect pests is entomopathogenic fungi. The purpose of this study was to compare the effectiveness of Beauveria bassiana and Chaetomium globosum as biological agents against Tuta absoluta. According to the findings, B. bassiana and C. globosium may be able to influence T. absoluta larvae’s eggs and third instar. By extending the duration and concentration, the fungus became more active. B. bassiana has had the greatest death rates after 7 days in the eggs and the third instar of the insect by 83.86% and 68.3% at 2 ×107 conidia mL-1, respectively.. This score was significantly differs to the C. globosium reached 60.09%and 31.7% in the destruction both eggs and the 3rd larvae-instar respectively. The outcomes also confirmed that the fungal colonies of both fungi isolated from leaves after 10 days of the application. The highest colony percentage belongs to the C. globosium 32.29% with a significant difference to the B. bassiana by 23.26%. The presence of both fungal colonies had a significant effect on the eggs, larvae, and pupae period development. Consequently, the weight of the pupal was influenced compared to the control. The B. bassiana has supremacy in comparison to the C. globosium and the control treatment. A gradual decrease has been shown in the proportion of the two fungal colonies tomato leaves after 30th days. The lowest level score was 4.17% and 9.37% for both B. bassiana and C. globosium respectively.

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Entomopathogenic fungi and their relevance in sustainable agriculture: A review

Cited by 18 publications

References 112 publications

A New Strain of Metarhizium robertsii Isolated from Loess Plateau and Its Virulence and Pathological Characteristics against Monochamus alternatus

A New Strain of Metarhizium robertsii Isolated from Loess Plateau and Its Virulence and Pathological Characteristics against Monochamus alternatus

Biocontrol effects of chemical molecules derived from Beauveria bassiana against larvae of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Efficacy of some Entomopathogenic Fungi Against Tomato Leaf Miner Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in Iraq

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