SelectedWorks - Donald Roberts

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Selected Works of Donald Roberts

Emeritus Professor

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About Donald Roberts

Present	Emeritus Professor, Utah State University ‐ Biology
Institution Organization Position Type Position Title Time Period to Options Current Position Affiliate my profile with this Institution

Biology

1964	Ph.D., University of California
Institution Organization Student Type Student Title Degree Time Period to Options Currently enrolled Affiliate my profile with this Institution

Laboratory bioassays and field-cage trials of Metarhizium spp. isolates with ...

BioControl (2017)

Chad A. Keyser, Éverton K. K. Fernandes, Drauzio E. N. Rangel, R. Nelson Foster, et al.

The Mormon cricket (MC) is an important pest in the western United States. This study evaluated the virulence in the ...

Effect of heat stress and oil formulation on conidial germination ...

Journal of Invertebrate Pathology (2016)

Lucas P. Barreto, Christian Luz, Gabriel M. Mascarin, Donald W. Roberts, et al.

The effect of heat stress (45 °C) versus non-heat stress (27 °C) on germination of Metarhizium anisopliae sensu stricto (s.s.) ...

Molecular and physiological effects of environmental UV radiation on fungal ...

Current Genetics (2015)

Gilberto U. L. Braga, Drauzio E. N. Rangel, Éverton K. K. Fernandes, Stephan D. Flint, et al.

Conidia are specialized structures produced at the end of the asexual life cycle of most filamentous fungi. They are responsible ...

Stress tolerance and virulence of insect-pathogenic fungi are determined by ...

Current Genetics (2015)

Drauzio E. N. Rangel, Gilberto U. L. Braga, Éverton K. K. Fernandes, Chad A. Keyser, et al.

The virulence to insects and tolerance to heat and UV-B radiation of conidia of entomopathogenic fungi are greatly influenced by ...

Tolerance of entomopathogenic fungi to ultraviolet radiation: A review on ...

Current Genetics (2015)

Éverton K. K. Fernandes, Drauzio E. N. Rangel, Gilberto U. L. Braga and Donald W. Roberts

Ultraviolet radiation from sunlight is probably the most detrimental environmental factor affecting the viability of entomopathogenic fungi applied to solar-exposed ...

The influence of conidial pr1 protease on pathogenicity potential of ...

Parasitol Res (2015)

Patrícia S. Gôlo, Huarrisson A. Santos, Wendell M. S. Perinotto, Simone Quinelato, et al.

Pr1 is a subtilisin-like protease produced by Metarhizium spp. entomopathogenic fungi, and it is recognized as heavily involved in the ...

Production of destruxins from Metarhizium spp. fungi in artificial medium ...

PLoS ONE (2014)

Patrícia S. Gôlo, Dale R. Gardner, Michelle M. Grilley, Jon Y. Takemoto, et al.

Destruxins (DTXs) are cyclic depsipeptides produced by many Metarhizium isolates that have long been assumed to contribute to virulence of ...

Heat-induced post-stress growth delay: A biological trait of many Metarhizium ...

Journal of Invertebrate Pathology (2014)

Chad A. Keyser, Éverton K. K. Fernandes, Drauzio E. N. Rangel and Donald W. Roberts

The habitats of many pest insects have fluctuating climatic conditions. To function effectively, the pathogens of these pests must be ...

Culture of Metarhizium robertsii on salicylic-acid supplemented medium induces increased ...

Fungal Biology (2012)

Drauzio E. N. Rangel, Éverton K. K. Fernandes, Anne J. Anderson and Donald W. Roberts

Salicylic acid (SA), a cell-signaling metabolite in plants, is involved in resistance of plants to pathogens and environmental stresses; however, ...

Perspectives on the potential of entomopathogenic fungi in biological control ...

Experimental Parasitology (2012)

Éverton K. K. Fernandes, Vânia R. E. P. Bittencourt and Donald W. Roberts

Ticks are serious health threats for humans, and both domestic and wild animals. Ticks are controlled mostly by application of ...

The relationship between conidial dose, moulting and insect developmental stage ...

Biocontrol Science and Technology (2012)

Jeong Jun Kim and Donald W. Roberts

The cotton aphid is one of the most serious pests of greenhouse vegetable crops worldwide. It is difficult to control ...

An Intensive Search for Promising Fungal Biological Control Agents of ...

Veterinary Parasitology (2011)

Éverton K. K. Fernandes, Isabele C. Angelo, Drauzio E. N. Rangel, Thiago C. Bahiense, et al.

Entomopathogenic fungi have been investigated worldwide as promising biological control agents of the cattle tick Rhipicephalus microplus. The current study ...

Visible Light During Mycelial Growth and Conidiation of Meterhizium Robertsii ...

FEMS Microbiology Letters (2011)

Drauzio E. N. Rangel, Éverton K. K. Fernandes, Gilberto U. L. Braga and Donald W. Roberts

Light conditions during mycelial growth are known to influence fungi in many ways. The effect of visible-light exposure during mycelial ...

Quantification of cyclobutane pyrimidine dimers induced by UVB radiation in ...

Photochemistry and Photobiology (2010)

Érika Nascimento, Sérgio H. da Silva, Everaldo dos Reis Marques, Donald W. Roberts, et al.

Conidia are responsible for reproduction, dispersal, environmental persistence and host infection of many fungal species. One of the main environmental ...

CTC medium: A novel dodine-free selective medium for isolating entomopathogenic ...

Biological Control (2010)

Éverton K. K. Fernandes, Chad A. Keyser, Drauzio E. N. Rangel, R. Nelson Foster, et al.

The selective media most commonly used for isolating hyphomycetous species of entomopathogenic fungi from non-sterile substrates rely on N-dodecylguanidine monoacetate ...

A laccase exclusively expressed by Metarhizium anisopliae during isotropic growth ...

Fungal Genetics and Biology (2010)

Weiguo Fang, Éverton K. K. Fernandes, Donald W. Roberts, Michael J. Bidochka, et al.

Insect pathogenic fungi including Metarhizium anisopliae offer an environmentally friendly alternative to chemical pesticides. However, their use has been limited ...

A proteomic approach to identifying proteins differentially expressed in conidia ...

Fungal Biology (2010)

Bruno H. R. Barros, Sérgio H. da Silva, Everaldo dos Reis Marques, José C. Rosa, et al.

Metarhizium spp. is an important worldwide group of entomopathogenic fungi used as an interesting alternative to chemical insecticides in programs ...

Thermotolerance of germlings and mycelium of the insect pathogenic fungus ...

Journal of Basic Microbiology (2010)

Drauzio E. N. Rangel, Éverton K. K. Fernandes, Seth J. Dettenmaier and Donald W. Roberts

The upper temperature limits for germination and growth were determined for Metarhizium acridum (ARSEF 324, 3341 and 3609), M. robertsii ...

Fungal tyrosine betaine, a novel seconday metabolite from conidia of ...

Fungal Biology (2010)

Carlos A. Carollo, Ana Luiza A. Calil, Letícia A. Schiave, Thais Guaratini, et al.

Fungi, including the entomopathogenic deuteromycete Metarhizium anisopliae, produce a wide diversity of secondary metabolites that either can be secreted or ...

Susceptibility of Metarhizium spp. and other entomopathogenic fungi to dodine-based ...

Biocontrol Science and Technology (2010)

Drauzio E. N. Rangel, Seth J. Dettenmaier, Éverton K. K. Fernandes and Donald W. Roberts

The fungicide dodine has been widely used in selective media to isolate entomopatho- genic fungi (EF) from contaminating microorganisms, primarily ...

Photodynamic inactivation of conidia of the fungi Metarhizium anisopliae and ...

Photochemistry and Photobiology (2010)

Fernanda P. Gonzales, Sérgio H. da Silva, Donald W. Roberts and Gilberto U. L. Braga

Antimicrobial photodynamic treatment (PDT) is a promising method that can be used to control localized mycoses or kill fungi in ...

Biological control of insects in Brazil and China: history, current ...

Biocontrol Science and Technology (2009)

Zengzhi Li, Sérgio B. Alves, Donald W. Roberts, Meizhen Fan, et al.

Brazil and China have been successful in the use of microbial control methods to manage several agricultural and forest insects. ...

Characterization of Metarhizium species and varieties based on molecular analysis ...

Journal of Applied Microbiology (2009)

Éverton K. K. Fernandes, Chad A. Keyser, J. P. Chong, Drauzio E. N. Rangel, et al.

Aims: The genetic relationships and conidial tolerances to high and low temperatures were determined for isolates of several Metarhizium species ...

Genetic diversity among Brazilian isolates of Beauveria bassiana: comparisons with ...

Journal of Applied Microbiology (2009)

Éverton K. K. Fernandes, Áurea M. L. Moraes, R. S. Pacheco, Drauzio E. N. Rangel, et al.

Aims: The genetic diversity of Beauveria bassiana was investigated by comparing isolates of this species to each other (49 from ...

Effects of physical and nutritional stress conditions during culture on ...

Mycological Research (2008)

Drauzio E. N. Rangel, Diane G. Alston and Donald W. Roberts

Growth under stress may influence pathogen virulence and other phenotypic traits. Conidia of the entomopathogenic fungus Metarhizium anisopliae var. anisopliae ...