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Kenneth Ashton Callicott
Research Molecular Biologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Structure of Aspergillus flavus populations associated with maize in Greece, Spain, and Serbia; implications for aflatoxin biocontrol on regional scale - (Peer Reviewed Journal)
Ouadhene, M.A., Callicott, K.A., Ortega-Beltran, A., Mehl, H.L., Cotty, P.J., Battilani, P. 2024. Structure of Aspergillus flavus populations associated with maize in Greece, Spain, and Serbia; implications for aflatoxin biocontrol on regional scale. Environmental Microbiology Reports. 16. Article E13249. https://doi.org/10.1111/1758-2229.13249.
Telomere-to-telomere genome assembly of the aflatoxin biocontrol agent Aspergillus flavus isolate La3279 isolated from maize in Nigeria - (Peer Reviewed Journal)
Legan, A.W., Mehl, H.L., Wissotski, M., Adhikari, B.N., Callicott, K.A. 2024. Telomere-to-telomere genome assembly of the aflatoxin biocontrol agent Aspergillus flavus isolate La3279 isolated from maize in Nigeria. Microbiology Resource Announcements. 13. Article e00696-23. https://doi.org/10.1128/mra.00696-23.
Nanopore PCR-cDNA sequencing of the biocontrol isolate Aspergillus flavus AF36 (NRRL 18543) informs gene annotation - (Peer Reviewed Journal)
Legan, A.W., Mehl, H.L., Varaksa Jr, A.A., Callicott, K.A. 2023. Nanopore PCR-cDNA sequencing of the biocontrol isolate Aspergillus flavus AF36 (NRRL 18543) informs gene annotation. Microbiology Resource Announcements. 12. Article e00527-23. https://doi.org/10.1128/MRA.00527-23.
Complete genome of the toxic mold Aspergillus pseudotamarii isolate NRRL 25517 reveals genomic instability of the aflatoxin biosynthesis cluster - (Peer Reviewed Journal)
Legan, A.W., Mack, B.M., Mehl, H.L., Wissotski, M., Ching'Anda, C., Maxwell, L.A., Callicott, K.A. 2023. Complete genome of the toxic mold Aspergillus pseudotamarii isolate NRRL 25517 reveals genomic instability of the aflatoxin biosynthesis cluster. G3, Genes/Genomes/Genetics. 13(9). Article 150. https://doi.org/10.1093/g3journal/jkad150.
Aflatoxin contamination of maize and groundnut in Burundi: Distribution of contamination, indentification of casual agents and potential biocontrol genotypes of Aspergillus flavus - (Peer Reviewed Journal)
Nsabiyumva, G., Mutegi, C.K., Wagacha, J.M., Bakari, A., Njeru, N., Ndayihanzamaso, P., Niyuhire, M.C., Atehnkeng, J., Njukwe, E., Callicott, K.A., Cotty, P.J., Ortega-Beltran, A., Bandyopadhyay, R. 2023. Aflatoxin contamination of maize and groundnut in Burundi: Distribution of contamination, indentification of casual agents and potential biocontrol genotypes of Aspergillus flavus. Frontiers in Microbiology. 2023. Article 1106543. https://doi.org/10.3389/fmicb.2023.1106543.
Crop host influences on outcomes of competition between Aspergillus section Flavi species co-infecting maize and groundnuts - (Peer Reviewed Journal)
Ching'Anda, C., Bandyopadyay, R., Callicott, K.A., Orbach, M.J., Cotty, P.J., Mehl, H.L. 2023. Crop host influences on outcomes of competition between Aspergillus section Flavi species co-infecting maize and groundnuts. PhytoFrontiers. 3:369-381. https://doi.org/10.1094/PHYTOFR-07-22-0076-R.
Characterization of the Aspergillus flavus population from highly aflatoxin-contaminated corn in the United States - (Peer Reviewed Journal)
Weaver, M.A., Callicott, K.A., Mehl, H.L., Opoku, J., Park, L.C., Fields, K., Mandel, J.R. 2022. Characterization of the Aspergillus flavus population from highly aflatoxin-contaminated corn in the United States. Toxins. 14(11). Article 755. https://doi.org/10.3390/toxins14110755.
Genetic diversity of Aspergillus flavus associated with chili in Nigeria and identification of haplotypes with potential in aflatoxin mitigation - (Peer Reviewed Journal)
Singh, P., Mehl, H.L., Orbach, M.J., Callicott, K.A., Cotty, P.J. 2022. Genetic diversity of Aspergillus flavus associated with chili in Nigeria and identification of haplotypes with potential in aflatoxin mitigation. Plant Disease. 106(7):1818-1825. https://doi.org/10.1094/PDIS-07-21-1464-RE.
Spatial and temporal population dynamics of Aspergillus flavus in commercial pistachio orchards in Arizona - (Peer Reviewed Journal)
Ching'Anda, C., Atehnkeng, J., Bandyopadhyay, R., Callicott, K.A., Orbach, M., Cotty, P.J., Mehl, H.L. 2022. Spatial and temporal population dynamics of Aspergillus flavus in commercial pistachio orchards in Arizona. Plant Health Progress. 23:272-280. https://doi.org/10.1094/PHP-10-21-0128-RS.
Temperature influences on interactions among aflatoxigenic species of aspergillus section flavi during maize colonization - (Peer Reviewed Journal)
Ching'Anda, C., Atehnkeng, J., Bandyopadhyay, R., Callicott, K.A., Orbach, M.J., Cotty, P.J., Mehl, H.L. 2021. Temperature influences on interactions among aflatoxigenic species of aspergillus section flavi during maize colonization. Frontiers in Fungal Biology. 2. Article 720276. https://doi.org/10.3389/ffunb.2021.720276.
Conservation and loss of a putative iron utilization gene cluster among genotypes of aspergillus flavus Reprint Icon - (Peer Reviewed Journal)
Adhikari, B.N., Callicott, K.A., Cotty, P.J. 2021. Conservation and loss of a putative iron utilization gene cluster among genotypes of aspergillus flavus. Microorganisms. 9(1). Article 137. https://doi.org/10.3390/microorganisms9010137.
Distribution of active ingredients of a commercial aflatoxin biocontrol product in naturally occurring fungal communities across Kenya - (Peer Reviewed Journal)
Islam, M.S., Callicott, K.A., Mutegi, C., Bandyopadhyay, R., Cotty, P.J. 2020. Distribution of active ingredients of a commercial aflatoxin biocontrol product in naturally occurring fungal communities across Kenya. Microbial Biotechnology. 14(4):1331-1342. https://doi.org/10.1111/1751-7915.13708.
Phenotypic differentiation of two morphologically similar aflatoxin producers from West Africa - (Peer Reviewed Journal)
Singh, P., Callicott, K.A., Orbach, M., Cotty, P.J., Mehl, H.L. 2020. Phenotypic differentiation of two morphologically similar aflatoxin producers from West Africa. Toxins. 12(10). Article 656. https://doi.org/10.3390/toxins12100656.
Founder events influence structures of Aspergillus flavus populations - (Peer Reviewed Journal)
Ortega-Beltran, A., Callicott, K.A., Cotty, P.J. 2020. Founder events influence structures of Aspergillus flavus populations. Environmental Microbiology. 22(8):3522-3534. https://doi.org/10.1111/1462-2920.15122.
Molecular analysis of S morphology aflatoxin producers from the United States reveals previously unknown diversity and two new taxa Reprint Icon - (Peer Reviewed Journal)
Singh, P., Callicott, K.A., Orbach, M.J., Cotty, P.J. 2020. Molecular analysis of S morphology aflatoxin producers from the United States reveals previously unknown diversity and two new taxa. Frontiers in Microbiology. 11. https://doi.org/10.3389/fmicb.2020.01236.
Monitoring Aspergillus flavus genotypes in a multi-genotype aflatoxin biocontrol product with quantitative pyrosequencing - (Peer Reviewed Journal)
Shenge, K.C., Adhikari, B.N., Akande, A., Callicott, K.A., Atehnkeng, J., Ortega-Beltran, A., Kumar, P., Bandyopadhyay, R., Cotty, P.J. 2019. Monitoring Aspergillus flavus genotypes in a multi-genotype aflatoxin biocontrol product with quantitative pyrosequencing. Frontiers in Microbiology. 10. https://doi.org/10.3389/fmicb.2019.02529.
Potential of atoxigenic Aspergillus flavus vegetative compatibility groups associated with maize and groundnut in Ghana as biocontrol agents for aflatoxin management - (Peer Reviewed Journal)
Agbetiameh, D., Ortega-Beltran, A., Awuah, R.T., Atenhking, J., Islam, M.S., Callicott, K.A., Cotty, P.J., Bandyopadhyay, R. 2019. Potential of atoxigenic Aspergillus flavus vegetative compatibility groups associated with maize and groundnut in Ghana as biocontrol agents for aflatoxin management. Frontiers in Microbiology. 10. https://doi.org/10.3389/fmicb.2019.02069.
The atoxigenic biocontrol product Aflasafe SN01 is a valuable tool to mitigate aflatoxin contamination of both maize and groundnut cultivated in Senegal - (Peer Reviewed Journal)
Senghor, L., Ortega-Beltran, A., Atehnkeng, J., Callicott, K.A., Cotty, P.J., Bandyopadhyay, R. 2019. The atoxigenic biocontrol product Aflasafe SN01 is a valuable tool to mitigate aflatoxin contamination of both maize and groundnut cultivated in Senegal. Plant Disease. 104(2):510-520. https://doi.org/10.1094/PDIS-03-19-0575-RE.
Aspergillus flavus resident in Kenya: High genetic diversity in an ancient population primarily shaped by clonal reproduction and mutation-driven evolution Reprint Icon - (Peer Reviewed Journal)
Islam, M.S., Callicott, K.A., Mutegi, C., Bandyopadhyay, R., Cotty, P.J. 2018. Aspergillus flavus resident in Kenya: High genetic diversity in an ancient population primarily shaped by clonal reproduction and mutation-driven evolution. Fungal Ecology. 35:20-33. https://doi.org/10.1016/j.funeco.2018.05.012.
Distribution and incidence of atoxigenic Aspergillus flavus VCG in tree crop orchards in California: A strategy for identifying potential antagonists, the example of almonds - (Peer Reviewed Journal)
Picot, A., Doster, M., Islam, M.S., Callicott, K.A., Cotty, P.J., Michalides, T., Ortega-Beltran, A. 2017. Distribution and incidence of atoxigenic Aspergillus flavus VCG in tree crop orchards in California: A strategy for identifying potential antagonists, the example of almonds. International Journal of Food Microbiology. 265:55-64. https://doi.org/10.1016/j.ijfoodmicro.2017.10.023.
The vegetative compatibility group to which the US biocontrol agent Aspergillus flavus AF36 belongs is also endemic to Mexico - (Peer Reviewed Journal)
Ortega-Beltran, A., Grubisha, L.C., Callicott, K.A., Cotty, P.J. 2016. The vegetative compatibility group to which the US biocontrol agent Aspergillus flavus AF36 belongs is also endemic to Mexico. Journal of Applied Microbiology. 120(4):986-998.
Method for monitoring deletions in the aflatoxin biosynthesis gene cluster of Aspergillus flavus with multiplex PCR - (Peer Reviewed Journal)
Callicott, K.A., Cotty, P.J. 2015. Method for monitoring deletions in the aflatoxin biosynthesis gene cluster of Aspergillus flavus with multiplex PCR. Letters in Applied Microbiology. 60:60-65.
Structure analysis of an Aspergillus flavus kernels population in North Italy. First analysis of an Aspergillus flavus kernels population based on vegetative compatibility groups in Northern Italy - (Peer Reviewed Journal)
Mauro, A., Battilani, P., Giorni, P., Pietri, A., Callicott, K.A., Cotty, P.J. 2013. Structure analysis of an Aspergillus flavus kernels population in North Italy. First analysis of an Aspergillus flavus kernels population based on vegetative compatibility groups in Northern Italy. International Journal of Food Microbiology. 162(1):1-7.
Aspergillus flavus diversity on crops and in the environment can be exploited to reduce aflatoxin exposure and improve health - (Peer Reviewed Journal)
Mehl, H.L., Jaime, R., Callicott, K.A., Probst, C., Garber, N.P., Ortega-Beltran, A., Grubisha, L.C., Cotty, P.J. 2012. Aspergillus flavus diversity on crops and in the environment can be exploited to reduce aflatoxin exposure and improve health. Annals of the New York Academy of Sciences. 1273:7-17.
Deadly strains of Kenyan aspergillus are distinct from other aflatoxin producers - (Peer Reviewed Journal)
Probst, C., Cotty, P.J., Callicott, K.A. 2011. Deadly strains of Kenyan Aspergillus are distinct from other aflatoxin producers. European Journal of Plant Pathology. 132:419-429.
Identification of a major xylanase from A flavus as a 14-kD protein - (Peer Reviewed Journal)
Mellon, J.E., Cotty, P.J., Callicott, K.A., Abbas, H.K. 2011. Identification of a major xylanase from A. flavus as a 14-kD protein. Mycopathologia. 172:299-305.
Temperature-related risk factors associated with the colonization of broiler-chicken flocks with Campylobacter spp. in Iceland, 2001-2004 - (Peer Reviewed Journal)
Briem, H., Fridriksdottir, V., Georgsson, V., Gunnarsson, E., Hardardottir, H., Kristinsson, K., Sigmundsdottir, G., Reiersen, J., Berndtson, E., Bisaillon, J.R., Fazil, A., Michel, P., Paoli, G., Lowman, R., Callicott, K.A., Hiett, K.L., Stern, N.J. 2008. Temperature-related risk factors associated with the colonization of broiler-chicken flocks with Campylobacter spp. in Iceland, 2001-2004. Preventive Veterinary Medicine. 86(1-2):14-29.
FREQUENCY AND ENUMERATION OF CAMPYLOBACTER SPP. FROM PROCEEDED BROILER CARCASSES USING WEEP AND RINSE SAMPLES - (Peer Reviewed Journal)
Stern, N.J., Georgsson, F., Lowman, R., Bisaillon, J.R., Reiersen, J., Callicott, K., Geirsdottir, M., Hrolfsdottir, R., Hiett, K.L. Frequency and enumeration of campylobacter spp. from proceeded broiler carcasses using weep and rinse samples. Poultry Science. 86:394-399.
LACK OF EVIDENCE FOR VERTICLE TRANSMISSION OF CAMPYLOBACTER SPP. IN CHICKENS - (Peer Reviewed Journal)
Callicott, K., Fridriksdottir, V., Reiersen, J., Lowman, R., Bisaillon, J., Gunnarsson, E., Berndtson, E., Hiett, K.L., Needleman, D.S., Stern, N.J. 2006. Lack of evidence for verticle transmission of campylobacter spp. in chickens. Applied and Environmental Microbiology. 72(9):5794-5798.
Survey of Wild Birds in the Southeastern United States for the Presence of Emerging/Novel Campylobacter Species - (Abstract Only)
Hiett, K.L., Kuntz, R.L., Stallknecht, D., Luttrell, P., Wilcox, B., Callicott, K., Seal, B.S. 2006. Survey of Wild Birds in the Southeastern United States for the Presence of Emerging/Novel Campylobacter Species. American Society for Microbiology. p. Q479.
Survey of Wild Birds in the Southeastern United States for the Presence of Emerging/Novel Campylobacter Species - (Abstract Only)
Hiett, K.L., Kuntz, R.L., Stallknecht, D.E., Luttrell, P., Wilcox, B., Callicott, K., Seal, B.S. 2006. Survey of Wild Birds in the Southeastern United States for the Presence of Emerging/Novel Campylobacter Species. Proceedings of the International Conference on Emerging Infectious Diseases. p. 39.
CAMPYLOBACTER SPP AT HATCH AND IN INTESTINAL CONTENT AMONG ICELAND BREEDER FLOCKS - (Abstract Only)
Stern, N.J., Reiersen, J., Lowman, R., Bisaillon, R., Fridriksdottir, V., Gunnarsson, E., Hiett, K.L., Callicott, K. 2005. Campylobacter spp at hatch and in intestinal content among iceland breeder flocks. Campylobacter Helicobacter and Related Organisms International Workshop. I-138.
RECOVERY OF GENOTYPIC INFORMATION FRO NON-CULTIVABLE CAMPYLOBACTER JEJUNI ISOLATES - (Peer Reviewed Journal)
Callicott, K., Stern, N.J., Hiett, K.L. 2005. Recovery of genotypic information fro non-cultivable campylobacter jejuni isolates. Poultry Science, 84:1530-1532.
CAMPYLOBACTERIOSIS IN CHICKEN IN ICELAND - IS VERTICAL TRANSMISSION OF INFECTION TAKING PLACE? - (Abstract Only)
Fridriksdottir, V., Gunnarsson, E., Jonsdottir, G., Astradsdottir, K., Birgisdottir, K., Bjarnadottir, S., Hjartardottir, S., Reiersen, J., Lowman, R., Hiett, K.L., Callicott, K., Stern, N.J. 2005. Campylobacteriosis in chicken in iceland - is vertical transmission of infection taking place?. International Conference on Emerging Zoonoses.
GENOTYPE ANALYSIS OF CAMPYLOBACTER SPP. RECOVERED FROM HUMAN DISEASE AND ANIMALS OTHER THAN BROILER CHICKENS IN ICELAND (2001-2004) - (Abstract Only)
Hiett, K.L., Callicott, K., Stern, N.J., Seal, B.S., Kuntz, R.L., Hardardottir, H., Kristinsson, K., Fridriksdottir, V., Gunnarsson, E., Reiersen, J., Lowman, R. 2005. Genotype analysis of campylobacter spp. recovered from human disease and animals other than broiler chickens in iceland (2001-2004). Campylobacter Helicobacter and Related Organisms International Workshop. A 33, P. 12.
REFINEMENT OF FLAA SVR SEQUENCE TYPING FOR CAMPYLOBACTER JEJUNI - (Abstract Only)
Callicott, K., Hiett, K.L., Stern, N.J., Reiersen, J., Berndtson, E., Fridricksdottir, V., Gunnarsson, E., Georgsson, F., Lowan, R. 2005. Refinement of flaa svr sequence typing for campylobacter jejuni [abstract]. American Society for Microbiology. p. D-209.
TEMPORAL POPULATION STRUCTURE OF CAMPYLOBACTER IN BROILER BREEDER CHICKEN FLOCKS IN ICELAND - (Abstract Only)
Callicott, K., Hiett, K.L., Stern, N.J. 2005. Temporal population structure of campylobacter in broiler breeder chicken flocks in iceland [abstract]. International Union of Microbiological Society. p. 47-48.
LACK OF EVIDENCE OF VERTICAL TRANSMISSION OF CAMPYLOBACTER IN ICELAND/SWEDISH POULTRY OPERATIONS - (Abstract Only)
Callicott, K., Stern, N.J., Hiett, K.L., Reiersen, J., Berndtson, E., Fridricksdottir, V., Gunnarsson, E., Georgsson, F., Lowman, R. 2004. Lack of evidence of vertical transmission of Campylobacter in Iceland/Swedish poultry operations [Abstract]. American Society of Microbiologists. Poster N-284, p. 448.
RECOVERY OF GENOTYPIC INFORMATION FROM NON-CULTURABLE CAMPYLOBACTER JEJUNI ISOLATES IN WANG'S TRANSPORT MEDIUM - (Abstract Only)
Callicott, K., Stern, N.J., Hiett, K.L. 2003. Recovery of genotypic information from non-culturable Campylobacter jejuni isolates in Wang's transport medium [Abstract]. International Journal of Medical Microbiology. 293:99.