The entomopathogenic fungus Metarhizium anisopliae and its potential as a biocontrol agent

Zimmermann, G.

doi:10.1002/ps.2780370410

Cited by 186 publications

(99 citation statements)

References 17 publications

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“…Ensuring survival and persistence of the fungi is one of the greatest challenges in using fungal insecticides, where optimization strategies are lacking in this arena. It has been recorded that about 500 (Davis, 1996) host species of Lepidoptera and 200 (Zimmermann, 1993) other insect families have been infected by two types of fungi, white muscardine (B. bassiana) and green muscardine (M. anisopliae), respectively. The chitin deacetylase of M. anisopliae was found to contribute to pathogenesis.…”

Section: Fungal Insecticidesmentioning

confidence: 99%

Microbial agents against Helicoverpa armigera: Where are we and where do we need to go?

Vijayabharathi¹,

Kumari²,

Gopalakrishnan³

2014

Afr. J. Biotechnol.

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Plants are prone to various biotic stresses in nature by bacteria, viruses, fungi, parasites, harmful insects and weeds. The biggest percentage loss (70%) in plants is attributed to insects. Lepidoptera is one such diversified phytophagous insect group, which include Helicoverpa armigera, a key pest of many food crops including chickpea, pigeonpea, pea, lentil, chillies, sunflower, tomato, tobacco and cotton. Controlling this insect has been a big task for farmers leading to the manufacture of a plethora of pesticides. However, over reliance on chemical pesticides has resulted in problems including safety risks, environmental contamination, outbreaks of secondary pests, insecticide resistance and decrease in biodiversity. Hence, there is an urgent need for the development of eco-friendly methods such as entomopathogens, antagonist or competitor populations of a third organism and botanicals to suppress H. armigera. Also, many compounds from microorganisms have been found to be effective in crop production, and these have a role in controlling H. armigera. The actinomycetes play an astounding role in controlling the key plant pathogens. They are the representative genera of higher microbial mass in the soil. Numerous studies have shown that these productive actino-bacteria can generate an impressive array of secondary metabolites such as antibiotics, antitumor agents, insecticides etc. This review emphasizes the mechanism behind resistance to insecticides along with actinomycetes and its potential as a biocontrol agent against H. armigera.

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Section: Fungal Insecticidesmentioning

confidence: 99%

Microbial agents against Helicoverpa armigera: Where are we and where do we need to go?

Vijayabharathi¹,

Kumari²,

Gopalakrishnan³

2014

Afr. J. Biotechnol.

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“…The entomopathogenic fungus, M. anisopliae (Metchnikoff) Sorokin has been reported to infect more than 200 species of insects belonging to different orders (Zimmermann, 1993). M. anisopliae produces destruxins both in culture and in vivo in the infected insects and were reported to be the candidates for mortality in insects.…”

Section: Metarhiziummentioning

confidence: 99%

Induced oxidative stress by Metarhizium anisopliae spp. instigates changes in lipid peroxidation and ultra structure in Periplaneta Americana

Mutyala¹,

Padmaja²

2013

Afr. J. Microbiol. Res.

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Consequent to injection of conidia at LC30, LC50 and LC90 doses of the entomopathogenic fungal isolates of Metarhizium anisopliae (Metch.), alterations in lipid peroxidation and ultrastructural changes were observed in cockroaches (Periplaneta americana). A decrease in the level of lipid peroxidation was evident in the treated cockroaches compared to those of control. Present investigation reports the effects of fungal infection on the midgut ultrastructure of the adult cockroaches which was manifested in the form of damage to the microvilli, epithelial cell vacuolization, necrosis and disruption of the epithelial cell membrane which occurred with increase in the time interval post treatment with conidia from high virulent isolate (M20) at LC50 dosage. Our study reveals for the first time that fungal infection instigates oxidative stress in the cockroach and that the villi of the midgut are also the target organs for the oxidative damage.

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“…Since these are particles rather than solutions, such contact may be difficult in some situations. Zimmermann (1993) claims that because of absence of toxicological or pathological symptoms in birds, fish, mice, rats, and guinea pigs after exposure to conidia of the fungus, Metarhizium anisopliae was safe. Also Strasser et al (2000) conclude from a risk-assessment study that the fungus poses no obvious risk to humans, or the environment.…”

Section: Metarhiziummentioning

confidence: 99%

Coelomomyces numularius sp. nov. (Blastocladiales: Coelomomycetaceae), a New Fungal Parasite of Anopheles squamosus (Diptera: Culicidae) from Angola, Africa

Ribeiro

Ramos

2000

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The entomopathogenic fungus Metarhizium anisopliae and its potential as a biocontrol agent

Cited by 186 publications

References 17 publications

Microbial agents against Helicoverpa armigera: Where are we and where do we need to go?

Microbial agents against Helicoverpa armigera: Where are we and where do we need to go?

Induced oxidative stress by Metarhizium anisopliae spp. instigates changes in lipid peroxidation and ultra structure in Periplaneta Americana

<I>Coelomomyces numularius</I> sp. nov. (Blastocladiales: Coelomomycetaceae), a New Fungal Parasite of <I>Anopheles squamosus</I> (Diptera: Culicidae) from Angola, Africa

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