Occurrence and distribution of soil borne entomopathogenic fungi within a single organic agroecosystem

Meyling, Nicolai V.; Eilenberg, Jørgen

doi:10.1016/j.agee.2005.10.011

Cited by 172 publications

(152 citation statements)

References 21 publications

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“…Thus, this indicated that the Beauveria sp. is more tolerant to cooler environment as claimed by various workers Meyling and Eilenberg, 2006;Medo and Cagáň, 2011).…”

Section: Discussionsupporting

confidence: 48%

“…This species has a wide hosts, infecting numerous insect pests and its can be isolated either from infected insect cadavers or soil (Oduor et al, 2000;Meyling and Eilenberg, 2006;Quesada-Moraga et al, 2007;Thakur and Sandhu, 2010). However, unlike Metarhizium sp., none of the samples from both types of soil was found with Beauveria sp.…”

Section: Discussionmentioning

confidence: 99%

“…Most of the EPF can be found naturally in the soil, as soil provides a good environmental shelter, which protected them from solar radiation and against high temperature (Vega et al, 2009). High distribution of soil-borne microorganisms in the agriculture soil indicates that the soil is fertile and healthy, thus give EPF higher chances to grow (Meyling and Eilenberg, 2006). The occurrence of EPF in soil is influenced by soil physico-chemical properties such as pH, organic matter, carbon/nitrogen ratio and cropping systems (Asensio et al, 2003;Quesada-Moraga et al, 2007;Oddsdóttir et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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The Occurrence of Entomopathogenic Fungi on Mineral and Peat Soils in Peninsular Malaysia

Kin¹,

Azmi²,

Kamarudin³

et al. 2017

American Journal of Agricultural and Biological Sciences

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The aims of this study are to isolate and identify Entomopathogenic Fungi (EPF) from mineral and peat soils in relation with the soil physico-chemical parameters. The mineral soil was sampled from the MPOB Research Station Hulu Paka in Terengganu, whereas peat soil was sampled from the MPOB Research Station Teluk Intan in Perak. Isolation of these fungi was carried out using a selective medium. Morphological characteristics of fungi were studied by observing the mycelium and conidia grown on agar plates using a light microscope. Soil physico-chemical parameters such as pH, water content, carbon and nitrogen content were also determined. Two species of EPF isolated from both types of soils were identified as Isaria amoenerosea and Metarhizium anisopliae. On potato dextrose agar, the colony of I. amoenerosea was pink in colour and slow growing with floccose mycelium which producing conidiophores with 3 to 4 phialides. The conidia were subglobose or irregular shapes between 2.0-3.0 µm long × 1.7-2.0 µm wide. The colony of M. anisopliae was whitish yellow and turned to dark green when matured; slow growing with floccose mycelium. The conidia were cylindrical with the dimension ranging from 6.0-7.0 µm long × 2.0-2.8 µm wide. The result shows that the occurrence of I. amoenerosea was more dominant than M. anisopliae. In mineral soil, out of 30 samples, I. amoenerosea was isolated from 25 soil samples (83%), while the M. anisopliae was only found in 15 samples (50%). In peat soil, out of 36 samples collected, 26 samples (72%) were found with I. amoenerosea, while the fungus M. anisopliae was isolated from eight samples (22%). In this study, the occurrence of EPF on mineral soil was higher than from peat soil, which was possibly due to low water content, high soil temperature and low C/N ratio.

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“…Thus, this indicated that the Beauveria sp. is more tolerant to cooler environment as claimed by various workers Meyling and Eilenberg, 2006;Medo and Cagáň, 2011).…”

Section: Discussionsupporting

confidence: 48%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Occurrence of Entomopathogenic Fungi on Mineral and Peat Soils in Peninsular Malaysia

Kin¹,

Azmi²,

Kamarudin³

et al. 2017

American Journal of Agricultural and Biological Sciences

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“…The presence of only three species was reported in the soil from arable fields: B. bassiana, M. anisopliae and I. fumosorosea. Chandler et al (1997), Meyling and Eilenberg (2006) and Tkaczuk (2008) also draw attention to the richer species composition of entomopathogenic fungi in soils from shelterbelts surrounding arable fields, and emphasize the important role of natural habitats as specific refugia for the survival of these fungi in agrocenoses. Mayling (2005) showed, moreover, that shelterbelts around arable fields are also reservoirs for a variety of phylogenetic lines of the fungus B. bassiana.…”

Section: Discussionmentioning

confidence: 99%

The occurrence of entomopathogenic fungi in soils from mid-field woodlots and adjacent small-scale arable fields

2013

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Tkaczuk C., Krzyczkowski T., Wegensteiner R.: The occurrence of entomopathogenic fungi in soils from mid-field woodlots and adjacent small-scale arable fields. Acta Mycol. 47 (2) : 191-202, 2012.The aim of this study was to compare the species composition and the intensity of entomopathogenic fungi occurrence in the soil from mid-field woodlots and adjacent small farmlands. The study material consisted of soil samples taken from a mid-field woodlot and an adjacent small-scale arable field in three different localities in the vicinity of Siedlce. Entomopathogenic fungi were isolated from soil using two methods: the insect bait method and the selective medium. The comparative study showed that the soil from mid-field woodlots was characterized by a richer species composition of entomopathogenic fungi than of adjacent arable fields. A total of six fungal species representing the anamorphs of Hypocreales (Ascomycota) were isolated from the soil collected from mid-field woodlots: B. bassiana, B. brongniartii, M. anisopliae, M. flavoviride, I. farinosa and I. fumosorosea. The presence of only three species was reported in the farmland soil: B. bassiana, M. anisopliae and I. fumosorosea. This fact confirms the important role of semi-natural habitats as a source of biodiversity of entomopathogenic fungi in agricultural landscape. It was found that entomopathogenic fungi together formed more colony-forming units in the soil from arable fields than that of neighbouring mid-field woodlots. B. bassiana was the species of fungus which infected more bait insect larvae and formed significantly more colony-forming units (CFU) in the soil from mid-field woodlots than that of farmland in the localities studied, whereas the trend was the opposite in the case of I. fumosorosea and M. anisopliae. Given the presence of entomopathogenic fungi in the farmland soil in the three test places together, it was found that I. fumosorosea was dominant in the soil from the two arable fields, where this fungus infected more G. mellonella larvae and formed significantly more CFUs than the other species of fungi. M. anisopliae was the second most frequently isolated farmland species.

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“…This susceptibility has resulted in the extensive use of these insects as so called 'bait insects' to isolate hypocrealean fungi from soil (Meyling and Eilenberg, 2006;Sun and Liu, 2008). As was the case for S. gregaria, also T. molitor exhibited lower mortality to introduced Metarhizium anisopliae when grown in crowded conditions, explained by increased investment in the immune system and seen as a higher level of melanisation in T. molitor grown under crowded conditions (Barnes and Siva-Jothy, 2000), while inbreeding of T. molitor increased the susceptibility to B. bassiana (Rantala et al, 2010).…”

Section: Fungimentioning

confidence: 99%

Diseases in insects produced for food and feed

Eilenberg

Vlak

Nielsen-LeRoux

et al. 2015

JIFF

148

117

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Increased production of insects on a large scale for food and feed will likely lead to many novel challenges, including problems with diseases. We provide an overview of important groups of insect pathogens, which can cause disease in insects produced for food and feed. Main characteristics of each pathogen group (viruses, bacteria, fungi, protists and nematodes) are described and illustrated, with a selection of examples from the most commonly produced insect species for food and feed. Honeybee and silkworm are mostly produced for other reasons than as human food, yet we can still use them as examples to learn about emergence of new diseases in production insects. Results from a 2014 survey about insect diseases in current insect production systems are presented for the first time. Finally, we give some recommendations for the prevention and control of insect diseases.

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Occurrence and distribution of soil borne entomopathogenic fungi within a single organic agroecosystem

Cited by 172 publications

References 21 publications

The Occurrence of Entomopathogenic Fungi on Mineral and Peat Soils in Peninsular Malaysia

The Occurrence of Entomopathogenic Fungi on Mineral and Peat Soils in Peninsular Malaysia

The occurrence of entomopathogenic fungi in soils from mid-field woodlots and adjacent small-scale arable fields

Diseases in insects produced for food and feed

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