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Donald Roberts

Profile Picture

Biology

Research Professor - Biology Department

Contact Information

Office Location: VSB 307
DialPhone: 435-797-0049
SendEmail: donald.roberts@usu.edu


Educational Background

PhD, Entomology (Invertebrate Pathology), (Mycology), University of California at Berkeley, 1964
Toxins of the insect pathogenic fungus Metarhizium anisopliae
MS, Entomology, (Mycology), Iowa State University, 1959
BS, Zoology, (Botany), Brigham Young University, 1957

Biography

Became interested in diseases of insects in the 1950's and eventually obtained a PhD in the subject at the University of California Berkeley and have conducted research on this subject since, both nationally and internationally.


Teaching Interests

Basic and applied insect pathology.

Research Interests

Entomopathogenic fungi, fungal toxins, molecular biology of fungi, insect poxviruses, pathogens of medically important arthropods, and insect control with microbes, including in developing nations.

Awards

Founders' Lecture Honoree, 2009

Society of Invertebrate Pathology

Society for Invertebrate Pathology Honorary Member (1998), 1998

Society for Invertebrate Pathology

Recognition Award and Honorary Membership (1996)., 1996

Entomological Society of Brazil (SEB)

Roy A. Young Scientist (Chair Scientist) , 1996

Boyce Thompson Institute for Plant Research at Cornell University.

President: 1988 - 1990, 1990

Society for Invertebrate Pathology

O. Howard Distinguished Achievement Award (1989)., 1989

Entomological Society of America, Eastern Branch

Entomological Society of America, Eastern Branch, nominee for National ESA Ciba Geigy Recognition Award in Entomology (1985 and 1986)., 1985

Entomological Society of America, Eastern Branch

Fulbright Senior Research Scholarship to Australia., 1985

Fulbright Foundation

Thomas Lawrence Pawlett Scholarship, University of Sydney , 1985

University of Sydney

Society for Invertebrate Pathology: Program Chairman (1981 84), Meetings Board Chairman (1984 88), Treasurer (1991-92), Vice President (1986-88), President (1988-90)., 1981

Society for Invertebrate Pathology

NSF US/India Exchange Scientist., 1978

NSF

Publications - Abstracts

    Publications - Books & Book Chapters

      Book Chapters

    • Goettel, M.S, Roberts, D.W, (1992). Mass production, formulation and field application of entomopathogenic fungi: Biological Control of Locusts and Grasshppers. CAB International

    * Has not been peer reviewed

    Publications - Fact Sheets

      * Has not been peer reviewed

      Publications - Curriculum

        * Has not been peer reviewed

        Publications - Journal Articles

          Academic Journal

        • Keyser, C.A, Fernandes, E.K, Rangel, D.E, Foster, R., Jech, L.E, Reuter, K., Black, L.R, Jaronski, S., Flake, D.D, Evans, E.W, Roberts, D.W, (2017). Laboratory bioassays and field-cage trials of Metarhizium spp. isolates with field-collected Mormon crickets (Anabrus simplex). BioControl, 62, 257-268. doi: DOI 10.1007/s10526-016-9782-8
        • Barreto, L.P, Luz, C., Mascarin, G.M, Roberts, D.W, Arruda, W., Fernandes, E.K, (2016). Effects of heat stress and oil formulaton on conidial germination of Metarhizium anisopliae on tick cuticle. Veterinary parasitology, 138, 94 - 103.
        • Braga, G.U, Rangel, D.E, Fernandes, .K, Flint, S.D, Roberts, D.W, (2015). Molecular and physiological effects of environmental UV radiation on fungal conidia.. Current genetics, 61:3, 405-25.
        • Rangel, D.E, Braga, G.U, Fernandes, .K, Keyser, C.A, Hallsworth, J.E, Roberts, D.W, (2015). Stress tolerance and virulence of insect-pathogenic fungi are determined by environmental conditions during conidial formation.. Current genetics, 61:3, 383-404.
        • Fernandes, .K, Rangel, D.E, Braga, G.U, Roberts, D.W, (2015). Tolerance of entomopathogenic fungi to ultraviolet radiation: a review on screening of strains and their formulation.. Current genetics, 61:3, 427-40.
        • Golo, P.S, Santos, H.A, Perinotto, W.M, Quinelato, S., Angelo, I.C, Camargo, M.G, S, F.A, Massard, C.L, Fernandes, .K, Roberts, D.W, Bittencourt, V.R, (2015). The influence of conidial Pr1 protease on pathogenicity potential of Metarhizium anisopliae senso latu to ticks.. Parasitology research, 114:6, 2309-15.
        • Keyser, C.A, Fernandes, .K, Rangel, D.E, Roberts, D.W, (2014). Heat-induced post-stress growth delay: a biological trait of many Metarhizium isolates reducing biocontrol efficacy?. Journal of invertebrate pathology, 120, 67-73.
        • Golo, P.S, Gardner, D., Grilley, M.M, Takemoto, J.Y, Krasnoff, S.B, Pires, M.S, Fernandes, .K, Bittencourt, V.R, Roberts, D.W, (2014). Production of destruxins from Metarhizium spp. fungi in artificial medium and in endophytically colonized cowpea plants.. PloS one, 9:8, e104946.
        • Kim, J.J, Roberts, D.W, (2012). The relationship between conidial dose, moulting and insect developmental stage on the susceptibility of cotton aphid, Aphis gossypii, to conidia of Lecanicillium attenuatum, an entomopathogenic fungus. . Biocontrol Science and Technology, 22, 319-331.
        • Rangel, D.E, Fernandes, .K, Anderson, A.J, Roberts, D.W, (2012). Culture of Metarhizium robertsii on salicylic-acid supplemented medium induces increased conidial thermotolerance.. Fungal biology, 116:3, 438-42.
        • Fernandes, .K, Bittencourt, V.R, Roberts, D.W, (2012). Perspectives on the potential of entomopathogenic fungi in biological control of ticks.. Experimental parasitology, 130:3, 300-5.
        • Fernandes, E.K, Angelo, I.C, Rangel, D.E, Bahiense, T.C, Moraes, A.M, Roberts, D.W, Bittencourt, V.R, (2011). An intensive search for promising fungal biological control agents of ticks, particularly Rhipicephalus microplus.. Veterinary parasitology, 182:2-4, 307-18.
        • Rangel, D.E, Fernandes, E.K, Braga, G.U, Roberts, D.W, (2011). Visible light during mycelial growth and conidiation of Metarhizium robertsii produces conidia with increased stress tolerance.. FEMS microbiology letters, 315:2, 81-6.
        • Fernandes, E.K, Keyser, C.A, Chong, J.P, Rangel, D.E, Miller, M.P, Bittencourt, V.R, Roberts, D.W, (2010). Characterization of Metarhizium species and varieties based on molecular analysis, heat tolerance and cold activity. . Journal of Applied Microbiology, 108, 115-128.
        • Fernandes, E.K, Keyser, C.A, Rangel, D.E, Foster, R.N, Roberts, D.W, (2010). CTC medium: A novel dodine-free selective medium for isolating entomopathogenic fungi, especially Metarhizium acridum, from soil. . Biological Control, 54, 197-205.
        • Gonzales, F.P, Da Silva, S.H, Roberts, D.W, Braga, G.U, (2010). Photodynamic inactivation of conidia of the fungi Metarhizium anisopliae and Aspergillus nidulans with methylene blue and toluidine blue. Photochemistry and Photobiology, 86:3, 653-661.
        • Nascimento, ., Da Silva, S.H, Dos Reis Marques, E., Roberts, D.W, Braga, G.U, (2010). Quantification of cyclobutane pyrimidine dimers induced by UVB radiation in conidia of the fungi Aspergillus fumigatus, Aspergillus nidulans, Metarhizium acridum and Metarhizium robertsii. Photochemistry and Photobiology, 86:6, 1259-1266.
        • Rangel, D.E, Dettenmaier, S.J, Fernandes, E.K, Roberts, D.W, (2010). Susceptibility of Metarhizium spp. and other entomopathogenic fungi to dodine-based selective media.. Biocontrol Science and Technology, 20:4, 375-389.
        • Rangel, D.E, Fernandes, E.K, Dettenmaier, S.K, Roberts, D.W, (2010). Thermotolerance of germlings and mycelium of the insect pathogenic fungus Metarhizium spp. and mycelial recovery after heat stress. . Journal of Basic Microbiology, 50, 344-350.
        • Li, Z., Alves, S., Roberts, D.W, Fan, M., Delalibera, Jr., I., Tang, J., Lopes, R., Faria, M., Rangel, D.E, (2010). Biological control of insects in Brazil and China: history, current programs and reasons for their successes using entomopathogenic fungi. . Biocontrol Science and Technology, 20:2, 117-136. doi: DOI: 10.1080/09583150903431665
        • Nascimento, ., da Silva, S.H, Marques Edos, R., Roberts, D.W, Braga, G.U, (2010). Quantification of cyclobutane pyrimidine dimers induced by UVB radiation in conidia of the fungi Aspergillus fumigatus, Aspergillus nidulans, Metarhizium acridum and Metarhizium robertsii.. Photochemistry and photobiology, 86:6, 1259-66.
        • Rangel, D.E, Fernandes, E.K, Dettenmaier, S.J, Roberts, D.W, (2010). Thermotolerance of germlings and mycelium of the insect-pathogenic fungus Metarhizium spp. and mycelial recovery after heat stress.. Journal of basic microbiology, 50:4, 344-50.
        • Fang, W., Fernandes, E.K, Roberts, D.W, Bidochka, M.J, St Leger, R.J, (2010). A laccase exclusively expressed by Metarhizium anisopliae during isotropic growth is involved in pigmentation, tolerance to abiotic stresses and virulence.. Fungal genetics and biology : FG & B, 47:7, 602-7.
        • Barros, B.H, da Silva, S.H, dos ReisMarques Edos, R., Rosa, J.C, Yatsuda, A.P, Roberts, D.W, Braga, G.U, (2010). A proteomic approach to identifying proteins differentially expressed in conidia and mycelium of the entomopathogenic fungus Metarhizium acridum.. Fungal biology, 114:7, 572-9.
        • Carollo, C.A, Calil, A.L, Schiave, L.A, Guaratini, T., Roberts, D.W, Lopes, N.P, Braga, G.U, (2010). Fungal tyrosine betaine, a novel secondary metabolite from conidia of entomopathogenic Metarhizium spp. fungi.. Fungal biology, 114:5-6, 473-80.
        • Gonzales, F.P, da Silva, S.H, Roberts, D.W, Braga, G.U, (2010). Photodynamic inactivation of conidia of the fungi Metarhizium anisopliae and Aspergillus nidulans with methylene blue and toluidine blue.. Photochemistry and photobiology, 86:3, 653-61.
        • Li, Z., Alves, S.B, Roberts, D.W, Fan, M., Delalibera, I., Tang, J., Lopes, R.B, Faria, M., Rangel, D.E, (2009). Biological control of insects in Brazil and China: history, current programs and reasons for their successes using entomopathogenic fungi. Biocontrol Science and Technology, 20:2, 117-136.
        • Fernandes, .K, Moraes, .M, Pacheco, R.S, Rangel, D.E, Miller, M.P, Bittencourt, V. R. E. P., , Roberts, D.W, (2009). Genetic diversity among Brazilian isolates of Beauveria bassiana: comparisons with non-Brazilian isolates and other Beauveria species. Journal of Applied Microbiology, 107:3, 760-774.
        • Schiave, L.A, Pedroso, R.S, Candido, R.C, Roberts, D.W, Braga, G.U, (2009). Variability in UVB tolerances of melanized and nonmelanized cells of Cryptococcus neoformans and C. laurentii.. Photochemistry and photobiology, 85:1, 205-13.
        • Rangel, D.E, Alston, D.G, Roberts, D.W, (2008). Effects of physical and nutritional stress conditions during mycelial growth on conidial germination speed, adhesion to host cuticle, and virulence of Metarhizium anisopliae, an entomopathogenic fungus. Mycological Research, 112:Pt 11, 1355-61.
        • Rangel, D.E, Anderson, A.J, Roberts, D.W, (2008). Evaluating physical and nutritional stress during mycelial growth as inducers of tolerance to heat and UV-B radiation in Metarhizium anisopliae conidia. Mycological Research, 112:Pt 11, 1362-72.
        • Rangel, D.E, Alston, D.G, Roberts, D.W, (2008). Effects of physical and nutritional stress conditions during mycelial growth on conidial germination speed, adhesion to host cuticle, and virulence of Metarhizium anisopliae, an entomopathogenic fungus.. Mycological research, 112:Pt 11, 1355-61.
        • Rangel, D.E, Anderson, A.J, Roberts, D.W, (2008). Evaluating physical and nutritional stress during mycelial growth as inducers of tolerance to heat and UV-B radiation in Metarhizium anisopliae conidia.. Mycological research, 112:Pt 11, 1362-72.
        • Fernandes, E.K, Rangel, D.E, Moraes, A.M, Bittencourt, V.R, Roberts, D.W, (2008). Cold activity of Beauveria and Metarhizium, and thermotolerance of Beauveria.. Journal of invertebrate pathology, 98:1, 69-78.
        • Rangel, D.E, Roberts, D.W, (2007). Inducing UV-B tolerance of Metarhizium anisopliae var. anisopliae conidia results in a trade-off between conidial production and conidial stress tolerance. 安徽農業大學學報, 34:2, 195-202.
        • Roberts, D.W, Rangel, D.E, Keyser, C.A, Bignayan, H.G, Dettenmaier, S.J, Fernandes, E.K, Miller, M.P, Evans, E.W, (2007). The Mormon cricket, an old threat in modern day Western USA: A search for fungal pathogens. Journal of Anhui Agricutlural University, 34:2, 141-148.
        • Fernandes, E.K, Rangel, D.E, Moraes, A.M, Bittencourt, V.R, Roberts, D.W, (2007). Variability in tolerance to UV-B radiation among Beauveria spp. isolates.. Journal of invertebrate pathology, 96:3, 237-43.
        • Rangel, D.E, Anderson, A.J, Roberts, D.W, (2006). Growth of Metarhizium anisopliae on non-preferred carbon sources yields conidia with increased UV-B tolerance. Journal of Invertebrate Pathology, 93:2, 127-34.
        • Rangel, D.E, Butler, M.J, Torabinejad, J., Anderson, A.J, Braga, G.U, Day, A.W, Roberts, D.W, (2006). Mutants and isolates of Metarhizium anisopliae are diverse in their relationships between conidial pigmentation and stress tolerance.. Journal of invertebrate pathology, 93:3, 170-82.
        • Rangel, D.E, Anderson, A.J, Roberts, D.W, (2006). Growth of Metarhizium anisopliae on non-preferred carbon sources yields conidia with increased UV-B tolerance.. Journal of invertebrate pathology, 93:2, 127-34.
        • Braga, G.U, Rangel, D.E, Flint, S.D, Anderson, A.J, Roberts, D.W, (2006). Conidial pigmentation is important to tolerance against solar-simulated radiation in the entomopathogenic fungus Metarhizium anisopliae.. Photochemistry and photobiology, 82:2, 418-22.
        • Alston, D.G, Rangel, D.E, Lacey, L.A, Golez, H.G, Kim, J.J, Roberts, D.W, (2005). Evaluation of novel fungal and nematode isolates for control of Conotrachelus nenuphar (Coleoptera : Curculionidae) larvae. Biological Control, 35:2, 163-171.
        • Rangel, D.E, Braga, G.U, Anderson, A.J, Roberts, D.W, (2005). Influence of growth environment on tolerance to UV-B radiation, germination speed, and morphology of Metarhizium anisopliae var. acridum conidia.. Journal of invertebrate pathology, 90:1, 55-8.
        • Castrillo, L.A, Roberts, D.W, Vandenberg, J.D, (2005). The fungal past, present, and future: germination, ramification, and reproduction.. Journal of invertebrate pathology, 89:1, 46-56.
        • Kim, J.J, Kim, K.C, Roberts, D.W, (2005). Impact of the entomopathogenic fungus Verticillium lecanii on development of an aphid parasitoid, Aphidius colemani.. Journal of invertebrate pathology, 88:3, 254-6.
        • Leite, L.G, Alves, S.B, Batista Filho, A., Roberts, D.W, (2005). Simple, inexpensive media for mass production of three entomophthoralean fungi.. Mycological research, 109:Pt 3, 326-34.
        • Rangel, D.E, Braga, G.U, Anderson, A.J, Roberts, D.W, (2005). Variability in conidial thermotolerance of Metarhizium anisopliae isolates from different geographic origins.. Journal of invertebrate pathology, 88:2, 116-25.
        • Miller, C.D, Rangel, D., Braga, G.U, Flint, S., Kwon, S., Messias, C.L, Roberts, D.W, Anderson, A.J, (2004). Enzyme activities associated with oxidative stress in Metarhizium anisopliae during germination, mycelial growth, and conidiation and in response to near-UV irradiation. Canadian Journal of Microbiology, 50:1, 41-9.
        • Rangel, D.E, Braga, G.U, Flint, S.D, Anderson, A.J, Roberts, D.W, (2004). Variations in UV-B tolerance and germination speed of Metarhizium anisopliae conidia produced on insects and artificial substrates.. Journal of invertebrate pathology, 87:2-3, 77-83.
        • Miller, C.D, Rangel, D., Braga, G.U, Flint, S., Kwon, S., Messias, C.L, Roberts, D.W, Anderson, A.J, (2004). Enzyme activities associated with oxidative stress in Metarhizium anisopliae during germination, mycelial growth, and conidiation and in response to near-UV irradiation.. Canadian journal of microbiology, 50:1, 41-9.
        • Roberts, D.W, St Leger, R.J, (2004). Metarhizium spp., cosmopolitan insect-pathogenic fungi: mycological aspects.. Advances in applied microbiology, 54, 1-70.
        • Leite, L.G, Alves, S.B, Batista Filho, A., Roberts, D.W, (2003). Effect of salts, vitamins, sugars and nitrogen sources on the growth of three genera of Entomophthorales: Batkoa, Furia, and Neozygites.. Mycological research, 107:Pt 7, 872-8.
        • Braga, G.U, Rangel, D.E, Flint, S.D, Miller, C.D, Anderson, A.J, Roberts, D.W, (2002). Damage and recovery from UV-B exposure in conidia of the entomopathogens Verticillium lecanii and Aphanocladium album.. Mycologia, 94:6, 912-20.
        • Braga, G.U, Flint, S.D, Miller, C.D, Anderson, A.J, Roberts, D.W, (2001). Both solar UVA and UVB radiation impair conidial culturability and delay germination in the entomopathogenic fungus Metarhizium anisopliae. Photochemistry and Photobiology, 74:5, 734-739.
        • Braga, G.U, Flint, S.D, Messias, C.L, Anderson, A.J, Roberts, D.W, (2001). Effect of UV-B on conidia and germlings of the entomopathogenic hyphomycete Metarhizium anisopliae. Mycological Research, 105, 874-882.
        • Braga, G.U, Flint, S.D, Miller, C.D, Anderson, A.J, Roberts, D.W, (2001). Variability in response to UV-B among species and strains of Metarhizium isolated from sites at latitudes from 61 degrees N to 54 degrees S. Journal of Invertebrate Pathology, 78:2, 98-108.
        • Pupin, A.M, Messias, C.L, Piedrabuena, A.E, Roberts, D.W, (2000). Total lipids and fatty acids of strains of Metarhizium anisopliae. Brazilian Journal of Microbiology, 31:2, 121-128.
        • St. Leger, R.J, Joshi, L., Roberts, D.W, (1998). Ambient pH Is a major determinant in the expression of cuticle-degrading enzymes and hydrophobin by Metarhizium anisopliae. Applied and Environmental Microbiology, 64:2, 709-713.
        • St Leger, R.J, Joshi, L., Bidochka, M.J, Roberts, D.W, (1996). Construction of an improved mycoinsecticide overexpressing a toxic protease. Proceedings of the National Academy of Sciences of the United States of America, 93:13, 6349-6354.
        • St. Leger, R.J, Bidochka, M.J, Roberts, D.W, (1994). Germination triggers of Metarhiziumv anisopliae conidia are related to host species. Microbiology-Uk, 140, 1651-1660.
        • Villani, M.G, Krueger, S.R, Schroeder, P.C, Consolie, F., Consolie, N.H, Prestonwilsey, L.M, Roberts, D.W, (1994). Soil Application Effects of Metarhizium-Anisopliae on Japanese-Beetle (Coleoptera, Scarabaeidae) Behavior and Survival in Turfgrass Microcosms. Environmental Entomology, 23:2, 502-513.
        • St. Leger, R.J, May, B., Allee, L.L, Frank, D.C, Staples, R.C, Roberts, D.W, (1992). Genetic differences in allozymes and in formation of infection structures among isolates of the entomopathogenic fungus Metarhizium anisopliae. Journal of Invertebrate Pathology, 60:1, 89-101.
        • Magalhaes, B.P, Humber, R.A, Shields, E.J, Roberts, D.W, (1991). Effects of environment and nutrition on conidium germination and appressorium formation by Zoophthora radicans (Zygomycetes, Entomophthorales) - a pathogen of the potato leafhopper (Homoptera, Cicadellidae). Environmental Entomology, 20:5, 1460-1468.
        • Teetor-Barsch, G., Roberts, D., (1983). Entomogenous Fusarium species. Mycopathologia, 84:1, 3-16.
        • Daoust, R.A, Roberts, D.W, (1983). Studies on the prolonged storage of Metarhizium anisopliae conidia: Effect of temperature and relative humidity on conidial viability and virulence against mosquitoes. Journal of Invertebrate Pathology, 41:2, 143-150.
        • Daoust, R.A, Roberts, D.W, (1983). Studies on the prolonged storage of Metarhizium anisopliae conidia: Effect of temperature and relative humidity on conidial viability and virulence against mosquitoes. Journal of Invertebrate Pathology, 41:2, 143-150.
        • Daoust, R.A, Roberts, D.W, (1982). Virulence of natural and insect-passaged strains of Metarhizium-anisopliae to mosquito larvae. Journal of Invertebrate Pathology, 40:1, 107-117.
        • Roberts, D., (1981). Toxins of entomopathogenic fungi. Microbial control of pests and plant diseases, 1970-1980
        • Al-Aidroos, K., Roberts, D.W, (1978). Mutants of Metarhizium anisopliae with increase virulence toward mosquito larvae. Can. J. Genet. Cytol, 20, 211-219.
        • Roberts, D.W, Campbell, A.S, (1977). Stability of entomopathogenic fungi. . Miscellaneous publications of the Entomological Society of America, 10:3, 19-76.

        * Has not been peer reviewed

        Publications - Literary Journal

          * Has not been peer reviewed

          Publications - MultiMedia

            * Has not been peer reviewed

            Publications - Technical Reports

              Research Reports

            • Jech, L.E, Foster, N., Jaronski, S., Reuter, K.C, Black, L.R, Roberts, D.W, Schlothauer, R., Keyser, C., (2012). Evaluation of ground applications of selected domestic strains of pathogenic fungi on four hectare (10 acre) and mini plots for control of rangeland grasshoppers (Orthoptera: Acrididae) near Dagmar, MT 2012. 2012 CPHST Laboratory Report Fort Collins and Phoenix *

            * Has not been peer reviewed

            Publications - Translations & Transcripts

              Publications - Other

                * Has not been peer reviewed