Virulence and fitness of the fungal pathogen Entomophaga maimaiga in its host Lymantria dispar, for pathogen and host strains originating from Asia, Europe, and North America

Nielsen, Charlotte; Keena, Melody A.; Hajek, Ann E.

doi:10.1016/j.jip.2005.05.004

Cited by 18 publications

(15 citation statements)

References 37 publications

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“…Entomophthoralean fungi can cause epidemics in host populations, both in natural habitats and under crop conditions (Hesketh et al, 2010). This has led to the suggestion of using entomophthoralean species as biocontrol agents for pest insects, such as aphids (Hountondji, 2008;Jensen et al, 2008;Nielsen et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Secretome of fungus-infected aphids documents high pathogen activity and weak host response

Grell

Jensen

Olsen

et al. 2011

Fungal Genetics and Biology

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a b s t r a c tThe discovery of novel secretome proteins can add to our understanding of host-pathogen interactions. Here we report a rich diversity of secreted proteins from the interaction between grain aphids (host, insect order Hemiptera) and fungi of the order Entomophthorales (insect pathogens). The proteins were identified using a unique method unbiased by known sequences or functions to screen a cDNA library constructed directly from field-sampled material. We show for the first time that fungi from the genera Pandora and Entomophthora are armed with a battery of hydrolytic enzymes for penetrating the host cuticle. This enables both access to the hemolymph and exit for sporulation. Further, they secrete enzymes, most notably a number of lipases, for digestion of easily accessible high-energy compounds in the hemolymph. In contrast, we identified only few host genes potentially involved in the interaction, indicating that aphids respond only weakly to the pathogens. These results support recent findings that aphids have a reduced immune repertoire.

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Section: Introductionmentioning

confidence: 99%

Secretome of fungus-infected aphids documents high pathogen activity and weak host response

Grell

Jensen

Olsen

et al. 2011

Fungal Genetics and Biology

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“…From other studies it is known that good results in the control of L. dispar were obtained using the entomophthoralen fungus Entomophaga maimaiga that is a major natural enemy in endemic Asian gypsy moth population. Nielsen et al (2005b) assessed virulence and fitness of the six strains of E. maimaiga originating from Japan, Russia, China and North America in different gypsy moth population (originating from Japan, Russia, Greece and USA). They found that all E. maimaiga isolates tested were pathogenic to all populations of L. dispar, regardless of the geographical origin of the fungal isolates, with at least 86% mortality.…”

Section: Field Application Of Entomopathogenic Fungimentioning

confidence: 99%

“…They found that all E. maimaiga isolates tested were pathogenic to all populations of L. dispar, regardless of the geographical origin of the fungal isolates, with at least 86% mortality. However, fungal isolates differed significantly in virulence (measured as time to death) and fitness (measured as fungal reproduction) (Nielsen et al, 2005b).…”

Section: Field Application Of Entomopathogenic Fungimentioning

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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“…To assay L. lineolaris and the other Hemiptera, we used methods similar to those in Nielsen et al (2005). A petri dish containing a culture of the fungus grown on EYSMA was inverted so that the hosts would be exposed to conidia actively ejected (showered) by the culture.…”

Section: Host-range Bioassaysmentioning

confidence: 99%

The natural occurrence of Pandora heteropterae (Zygomycetes: Entomophthorales) infecting Lygus lineolaris (Hemiptera: Miridae)

Hannam

Steinkraus

2010

Journal of Invertebrate Pathology

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Virulence and fitness of the fungal pathogen Entomophaga maimaiga in its host Lymantria dispar, for pathogen and host strains originating from Asia, Europe, and North America

Cited by 18 publications

References 37 publications

Secretome of fungus-infected aphids documents high pathogen activity and weak host response

Secretome of fungus-infected aphids documents high pathogen activity and weak host response

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

The natural occurrence of Pandora heteropterae (Zygomycetes: Entomophthorales) infecting Lygus lineolaris (Hemiptera: Miridae)

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