Mycopathogens of Soil Insects

Keller, Siegfried; Zimmermann, G.

doi:10.1016/b978-0-12-751800-8.50016-1

Cited by 108 publications

(73 citation statements)

References 49 publications

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“…Soil fungi represent one of the essential components of the biotic system in natural forests, pastures, grassland and agriculture fields where they are key players in nutrient turnover (Hackl et al, 2005). Entomopathogenic fungi are a separate group, playing a key role in regulation of insect populations, particularly soildwelling insect pests (Keller, Zimmermann, 1989;Jackson et al, 2000). Many species belonging to Hypocreales (Ascomycota) inhabit the soil for a significant part of their life when they are outside of their insect host.…”

Section: Total Percentage Of Metal-resistant Entomopathogenic Fungimentioning

confidence: 99%

“…Fungi from the genera Beuveria Vuill., Metarhizium Sorokin, Paecilomyces Bainier and Verticillium Nees are the most common (Keller, Zimmermann, 1989; Klingen, Haukeland, 2006). However, other fungal species, including opportunistic pathogens as well as secondary colonizers, can also greatly affect the dynamics of insect population thriving in soil habitat (Gunde-Cimerman et al, 1998; Ali-Shtayeh et al, 2002; Sun, Liu, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Effect of zinc and copper on cultivable populations of soil fungi with special reference to entomopathogenic fungi

Pečiulytė¹,

Dirginčiutė-Volodkienė²

2012

Ekologija

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The effect of copper and zinc on cultivable soil fungi populations was investigated in a laboratory experiment. Samples of four different soils (arable sandy soil and loam clay; forest sandy soil and forest peat) were collected from sites located in Vilnius district, Lithuania. Metals' effect was elaborated by addition of metal salts (CuSO 4 and ZnSO 4 ) at appropriate concentrations into the growth medium (Czapek's agar) and evaluating culmedium (Czapek's agar) and evaluating cultivable fungi abundance and species diversity changes. Zinc or copper salt was added to the medium after its sterilization; zinc concentration varied from 0.05 to 0.20 M (by 0.05 M concentration range) and copper concentration -from 0.5 to 3.0 mM (by 0.15 mM concentration range). At elevated metal salt concentrations, the abundance of cultivable fungi decreased with a marked elimination of some fungi species as compared with a control medium (without metal addition) fungi cultures. Irrespective of a fungi community structure in different type soils, Cu was a stronger inhibitor of soil fungi population abundance than Zn, however, both metals showed a comparable effect on the fungi species diversity. The most resistant fungi belonged to common insect pathogens (Beuveria bassiana, Metarhizium anisopliae, Lecanicillium lecanii and Isaria spp.), which dominated comprising up to 90% of all recovered from the soils isolates, due to the metal salt concentration.

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Section: Total Percentage Of Metal-resistant Entomopathogenic Fungimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of zinc and copper on cultivable populations of soil fungi with special reference to entomopathogenic fungi

Pečiulytė¹,

Dirginčiutė-Volodkienė²

2012

Ekologija

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“…Many fungal species belonging to Hypocreales (Ascomycota) have shown insect pathogenicity and dwell in the soil for a significant part of their life cycle, outside the host. Protection from UV radiation and numerous adverse biotic and abiotic influences have made soil an excellent environmental reservoir for EPF (Keller and Zimmermann 1989). Therefore, studying soils for EPF diversity has been a common practice (Meyling and Eilenberg 2006, Quesada-Moraga et al 2007, Rudeen et al 2013, Muñiz-Reyes et al 2014, Clifton et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Entomopathogenic fungi in Portuguese vineyards soils: suggesting a ‘Galleria-Tenebrio-bait method’ as bait-insects Galleria and Tenebrio significantly underestimate the respective recoveries of Metarhizium (robertsii) and Beauveria (bassiana)

Sharma

Oliveira

Torres

et al. 2018

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Entomopathogenic fungi (EPF) are the natural enemies of insect-pests. However, EPF recoveries can be influenced by the soil habitat-type(s) incorporated and/or the bait-insect(s) used. Galleria mellonella (GM) as bait-insect, i.e. 'Galleria-bait', is arguably the most common methodology, which is sometimes used solely, to isolate EPF from soils. Insect baiting using Tenebrio molitor (TM) has also been employed occasionally. Here 183 soils were used to estimate the functional diversity of EPF in Portuguese Douro vineyards (cultivated habitat) and adjacent hedgerows (semi-natural habitat), using the TM bait method. Moreover, to study the effect of insect baiting on EPF recovery, 81 of these 183 soil samples were also tested for EPF occurrences using the GM bait method. Twelve species were found in 44.26% ± 3.67% of the total of 183 soils. Clonostachys rosea f. rosea was found in maximum soils (30.05% ± 3.38%), followed by Beauveria bassiana (12.57% ± 2.37%), Purpureocillium lilacinum (9.29% ± 2.14%) and Metarhizium robertsii (6.01% ± 1.75%). Beauveria pseudobassiana (P < 0.001), C. rosea f. rosea (P = 0.006) and RESEARCH ARTICLELav Sharma et al. / MycoKeys 38: 1-23 (2018) 2 Cordyceps cicadae (P=0.023) were isolated significantly more from hedgerows, highlighting their sensitivities towards agricultural disturbances. Beauveria bassiana (P = 0.038) and M. robertsii (P = 0.003) were isolated significantly more using GM and TM, respectively. Principal component analysis revealed that M. robertsii was associated both with TM baiting and cultivated habitats, however, B. bassiana was slightly linked with GM baiting only. Ecological profiles of B. bassiana and P. lilacinum were quite similar while M. robertsii and C. rosea f. rosea were relatively distant and distinct. To us, this is the first report on (a) C. cicadae isolation from Mediterranean soils, (b) Purpureocillium lavendulum as an EPF worldwide; and (c) significant recoveries of M. robertsii using TM over GM. Overall, a 'Galleria-Tenebrio-bait method' is advocated to study the functional diversity of EPF in agroecosystems.

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“…Humid tropical forests had a rich and varied insect pathogenic fungal species and the great majority of species belong in the genus Cordyceps (Ascomycota: Hypocreales) (Evans, 1982;Aung et al, 2008). While other species of Hypocreales such as Beauveria, Metarhizium and Isaria were the dominant fungi found on soil insects (Samson et al, 1988;Keller & Zimmerman, 1989).…”

Section: Geographical and Ecological Distribution Of Entomopathogenicmentioning

confidence: 99%

Entomopathogenic Fungi as an Important Natural Regulator of Insect Outbreaks in Forests (Review)

Augustyniuk-Kram¹,

Kram²

2012

Forest Ecosystems - More Than Just Trees

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The common idea for many people is that forests are just a collection of trees. However, they are much more than that. They are a complex, functional system of interacting and often interdependent biological, physical, and chemical components, the biological part of which has evolved to perpetuate itself. This complexity produces combinations of climate, soils, trees and plant species unique to each site, resulting in hundreds of different forest types around the world. Logically, trees are an important component for the research in forest ecosystems, but the wide variety of other life forms and abiotic components in most forests means that other elements, such as wildlife or soil nutrients, should also be the focal point in ecological studies and management plans to be carried out in forest ecosystems. In this book, the readers can find the latest research related to forest ecosystems but with a different twist. The research described here is not just on trees and is focused on the other components, structures and functions that are usually overshadowed by the focus on trees, but are equally important to maintain the diversity, function and services provided by forests. The first section of this book explores the structure and biodiversity of forest ecosystems, whereas the second section reviews the research done on ecosystem structure and functioning. The third and last section explores the issues related to forest management as an ecosystem-level activity, all of them from the perspective of the �other� parts of a forest.

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Mycopathogens of Soil Insects

Cited by 108 publications

References 49 publications

Effect of zinc and copper on cultivable populations of soil fungi with special reference to entomopathogenic fungi

Effect of zinc and copper on cultivable populations of soil fungi with special reference to entomopathogenic fungi

Entomopathogenic fungi in Portuguese vineyards soils: suggesting a ‘Galleria-Tenebrio-bait method’ as bait-insects Galleria and Tenebrio significantly underestimate the respective recoveries of Metarhizium (robertsii) and Beauveria (bassiana)

Entomopathogenic Fungi as an Important Natural Regulator of Insect Outbreaks in Forests (Review)

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