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Biosecurity and Microbial Forensics
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Recent Activities

Browse the latest presentations, publications, grants, awards and other accomplishments from the Biosecurity research team.

  • 2026
    1. Arif, M., Maurya, N., Komal, K., Alvarez, A. M., & Dobhal, S. (2026). Pantoea papayae sp. nov., a purple-pigmented novel species associated with papaya in Hawaii. APS Plant Health 2026, Providence, RI, United States.
    1. Arias Armijos, S. C., Ribeiro-Junior, M. R., Mendoza Niemes, M. C., Aoun, M., & Ochoa-Corona, F. (2026). Integrated multiplex PCR and E-probes Diagnostic Nucleic Acid Analysis (EDNA) for detection of wheat viruses in Oklahoma and the Great Plains. APS Plant Health 2026, Providence, RI, United States.
    1. Bodaghi, S., Osman, F., Phillips, J., Blaha, G., Espindola, A., & Vidalakis, G. (2026). Beyond a single sequence: advancing citrus pathogen detection. APS Plant Health 2026, Providence, RI, United States.
    1. Dobhal, S., Arizala, E. D., Maurya, N., Ma, L., & Arif, M. (2026). Genomic, phylogenetic, and morphological characterization of a novel Pectobacterium species, Pectobacterium hawaiiense sp. nov. isolated from Hoodia. APS Plant Health 2026, Providence, RI, United States.
    1. Komal, K., Maurya, N., Olson, J. D., Wallace, S., Arif, M., & Dobhal, S. (2026). First report of Pseudomonas marginalis causing leaf blight and crown rot in Ranunculus asiaticus from Texas, USA. APS Plant Health 2026, Providence, RI, United States.
    1. Komal, K., Arif, M., Ma, L., & Dobhal, S. (2026). Pangenome and large-scale phylogenomic analyses of Dickeya species reveal taxonomic complexity and virulence diversity. APS Plant Health 2026, Providence, RI, United States.
    1. Ku, C., Jenkins, D., Dobhal, S., & Arif, M. (2026). Developing a real-time recombinase-aided amplification assay for the rapid, specific detection of Dickeya dianthicola. APS Plant Health 2026, Providence, RI, United States.
    1. Martin, F. N., Geiser, D. M., Li, N., O'Donnell, S., Rahimlou, S., Steenwyk, J., Ramos Lopez, A. D., Gluck-Thaler, E., & Espindola, A. (2026). A genomic resource for Fusarium oxysporum supporting isolate identification, diagnostics and genome assemblies. APS Plant Health 2026, Providence, RI, United States.
    1. Maurya, N., Dobhal, S., & Arif, M. (2026). MetKhoj: a genome-resolved platform integrated with the MetNexus reference database for sensitive and specific plant pathogen detection. APS Plant Health 2026, Providence, RI, United States.
    1. Maurya, N., Dobhal, S., Voleti, M., & Arif, M. (2026). MetPHY: a user-friendly platform for core-genome phylogenomic analyses of plant pathogens. APS Plant Health 2026, Providence, RI, United States.
    1. Maurya, N., Dobhal, S., & Arif, M. (2026). Phylogenomic and comparative genomic insights of Erwinia spp.: Insights into taxonomy and virulence. APS Plant Health 2026, Providence, RI, United States.
    1. Peña-Zúñiga, L., Espindola, A., Hagen, D., Ali, A., Ochoa-Corona, F., & Ribeiro-Junior, M. R. (2026). Quantitative evaluation of detection limits for EDNA in unassembled high-throughput sequencing datasets. APS Plant Health 2026, Providence, RI, United States.
    1. Rahimlou, S., Martin, F. N., Espindola, A., Ramos Lopez, A. D., & Geiser, D. M. (2026). Development of TaqMan qPCR diagnostic markers using E-probes. APS Plant Health 2026, Providence, RI, United States.
    1. Ramos Lopez, A. D., Espindola, A., Rahimlou, S., Martin, F. N., & Geiser, D. M. (2026). Development of broad-spectrum DNA markers through e-probes: A case study on Fusarium oxysporum f. sp. lactucae. APS Plant Health 2026, Providence, RI, United States.
    1. Ribeiro, P. H., Ribeiro-Junior, M. R., Silveira, B. R. R., Ochoa-Corona, F., & Krause-Sakate, R. (2026). A simplified RNA recovery method for CPMMV detection in soybean. APS Plant Health 2026, Providence, RI, United States.
    1. Ribeiro-Junior, M. R., Olson, J. D., Wallace, S., Nascimento, D., & Ochoa-Corona, F. (2026). First report of tobacco ringspot virus in Hibiscus sabdariffa (roselle) in the United States. APS Plant Health 2026, Providence, RI, United States.
    1. Zhang, J., Habiger, J., Ochoa-Corona, F., Ma, L., Bodaghi, S., Vidalakis, G., & Espindola, A. (2026). Artificial master mix citrus datasets provide a standardized benchmark resource for HTS pathogen detection pipelines. APS Plant Health 2026, Providence, RI, United States.
  • 2025
    1. Arizala, D., Dobhal, S., Alvarez, A. M., & Arif, M. (2025). Evolutionary genomics unveils homologous recombination events involved in speciation, adaptation, and lifestyle of the genus Clavibacter and C. michiganensis species. APS Plant Health 2025, Honolulu, HI, United States.
    1. Arizala, D., Dobhal, S., Alvarez, A. M., & Arif, M. (2025). Proposal for two novel non-pathogenic Clavibacter species: Clavibacter seminis sp. nov. and Clavibacter quasicaliforniensis sp. nov. APS Plant Health 2025, Honolulu, HI, United States.
    1. Arizala, D., Dobhal, S., & Arif, M. (2025). Evolutionary and comparative genomic analyses of Pectobacterium jejuense isolated from various hosts and geographic regions. APS Plant Health 2025, Honolulu, HI, United States.
    1. Cherryl, Dobhal, S., Alvarez, A. M., & Arif, M. (2025). Isothermal RPA-CRISPR/Cas12a system for rapid and highly specific detection of soft rot-causing bacterial pathogen Dickeya fangzhongdai. SRS-CTAHR Symposium 2025, Honolulu, HI, United States.
    1. Cherryl, Dobhal, S., Taj, G., Alvarez, A. M., & Arif, M. (2025). RPA-mediated CRISPR/Cas12a-based assay for rapid and highly specific detection of soft rot-causing bacterial pathogen Dickeya fangzhongdai. APS Plant Health 2025, Honolulu, HI, United States.
    1. Dobhal, S., Alvarez, A. M., & Arif, M. (2025). The sequencing revolution propels a surge in identification of novel Pectobacterium and Dickeya species. APS Plant Health 2025, Honolulu, HI, United States.
    1. Komal, Dobhal, S., Alvarez, A. M., & Arif, M. (2025). Megaplasmids in Ralstonia: Evolution, virulence, and host adaptation. APS Plant Health 2025, Honolulu, HI, United States.
    1. Komal, Dobhal, S., Alvarez, A. M., & Arif, M. (2025). The role of the Ralstonia megaplasmid in pathogenicity and host adaptation. SRS-CTAHR Symposium 2025, Honolulu, HI, United States.
    1. Ku, C., Uzzamman, M. A., Dobhal, S., Arif, M., & Jenkins, D. (2025). Electroflotation cartridge for rapid microbial enrichment to improve molecular detection limits for Dickeya dianthicola and Escherichia coli. APS Plant Health 2025, Honolulu, HI, United States.
    1. Maurya, N., Dobhal, S., Alvarez, A. M., & Arif, M. (2025). Impact of Ralstonia infection on the microbiome of ironwood trees under varied environmental conditions. ASM Microbe 2025, Los Angeles, CA, United States.
    1. Maurya, N., Dobhal, S., Alvarez, A. M., & Arif, M. (2025). Investigating the microbiome shift in ironwood trees caused by Ralstonia infection. APS Plant Health 2025, Honolulu, HI, United States.
    1. Montesinos, S., & Arif, M. (2025). BacPath and BacPathDB: A field-deployable bacterial plant pathogen identification tool. SRS-CTAHR Symposium 2025, Honolulu, HI, United States.
    1. Montesinos, S., & Arif, M. (2025). BacPath and BacPathDB: Bacterial plant pathogen identification through metagenomics. APS Plant Health 2025, Honolulu, HI, United States.
    1. Paswan, R., Paul, S., Charlton, N., Jones, L. B., Bridges, A., & Ma, L. M. (2025). Longitudinal study of the prevalence of Shiga toxin-producing Escherichia coli and Salmonella in pecan orchards under regenerative agriculture management. International Association for Food Protection (IAFP) 2025 Annual Meeting, Cleveland, OH, United States.
    1. Paswan, R., Paul, S., Zhang, G. Z., & Ma, L. M. (2025). Prevalence of Shiga toxin-producing Escherichia coli and Salmonella in pecan orchards under regenerative agriculture practice management. International Association for Food Protection (IAFP) 2025 Annual Meeting, Cleveland, OH, United States.
    1. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2025). Dynamic changes in antibiotic resistomes of pecan orchard soil under adaptive multi-paddock (AMP) grazing management. Robert M. Kerr Food & Agricultural Products Center (FAPC) Research Symposium 2025, Stillwater, OK, United States.
    1. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2025). Impact of adaptive multi-paddock (AMP) grazing over time on pecan orchard soil microbiomes using amplicon sequencing and shotgun metagenomics. 21st Annual Research Symposium of Biological Sciences (BMBGSA), Stillwater, OK, United States.
    1. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2025). Dynamic changes in antibiotic resistomes of pecan orchard soil under adaptive multi-paddock (AMP) grazing management. International Association for Food Protection (IAFP) 2025 Annual Meeting, Cleveland, OH, United States.
    2. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2025). Impact of adaptive multi-paddock (AMP) grazing over time on pecan orchard soil microbiomes using amplicon sequencing and shotgun metagenomics. International Association for Food Protection (IAFP) 2025 Annual Meeting, Cleveland, OH, United States.
    1. Stewart, V., Arizala, D., Dobhal, S., & Arif, M. (2025). Phenotypic and genomic diversity of Pectobacterium brasiliense strains isolated from various hosts in Hawai‘i. ASM Microbe 2025, Los Angeles, CA, United States.
    1. Stewart, V., Arizala, D., Dobhal, S., & Arif, M. (2025). Comparative genomics and phenotypic analysis of Pectobacterium brasiliense strains isolated from various hosts in Hawai‘i. APS Plant Health 2025, Honolulu, HI, United States.
    1. Syhlman, D., Arizala, D., Dobhal, S., Alvarez, A. M., & Arif, M. (2025). Pan-genome insights into the evolutionary significance of the megaplasmid in Ralstonia pseudosolanacearum. SRS-CTAHR Symposium 2025, Honolulu, HI, United States.
  • 2024
    1. Arif, M., Dobhal, S., Ma, L. M., & Stack, J. (2024). Emerging pathogen strains and their multi-trophic interactions threaten food safety and biosecurity. 20th International Plant Protection Congress (ICPP) 2024, Athens, Greece.
    2. Bhandari, S., Arif, M., Ma, L. M., & Dobhal, S. (2024). Multi-trophic interactions between soft rot-causing bacteria, foodborne pathogen, and their host plant. APS Plant Health 2024, Memphis, TN, United States.
    3. Dobhal, S., Ma, L. M., & Arif, M. (2024). Deciphering the dynamics of attachment and internalization of mScarlet-I labelled (chromosomally integrated) Salmonella enterica Oranienburg and Shiga toxin-producing Escherichia coli O157:H7 in kale. International Association for Food Protection (IAFP) 2024 Annual Meeting, Long Beach, CA, United States.
    4. Paswan, R., Charlton, N., Jones, L., Bridges, A., & Ma, L. M. (2024). Potential food safety impact of adaptive multipaddock (AMP) management in pecan production. Robert M. Kerr Food & Agricultural Products Center (FAPC) Research Symposium 2024, Stillwater, OK, United States.
    5. Paswan, R., Paul, S., Zhang, G. Z., & Ma, L. M. (2024). Prevalence of Shiga toxin-producing Escherichia coli and Salmonella in pecan orchards under regenerative agriculture practice management. International Association for Food Protection (IAFP) 2024 Annual Meeting, Long Beach, CA, United States.
    6. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2024). Comparative analysis of culture and non-culture methods for the detection of Salmonella in pecan orchard soil. International Association for Food Protection (IAFP) 2024 Annual Meeting, Long Beach, CA, United States.
    7. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2024). Core microbiomes of soil in pecan orchards under regenerative agriculture management. Robert M. Kerr Food & Agricultural Products Center (FAPC) Research Symposium 2024, Stillwater, OK, United States.
    8. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2024). Difference in the detection of Salmonella in pecan orchard soil by culture and non-culture methods. Robert M. Kerr Food & Agricultural Products Center (FAPC) Research Symposium 2024, Stillwater, OK, United States.
    9. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2024). Effectiveness of culture and non-culture methods for the detection of Salmonella enterica in pecan orchard soil. 16th Arkansas Association for Food Protection Annual Meeting, Fayetteville, AR, United States.
    10. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2024). Insights into the core soil microbiomes of sandy and clay soils in pecan orchards under adaptive multi-paddock (AMP) management using high-throughput amplicon sequencing. International Association for Food Protection (IAFP) 2024 Annual Meeting, Long Beach, CA, United States.
    11. Paul, S., Paswan, R., Zhang, G. Z., & Ma, L. M. (2024). Soil microbiomes in sandy and clay soils of pecan orchards under adaptive multi-paddock (AMP) grazing using amplicon and shotgun metagenomic sequencing. 16th Arkansas Association for Food Protection Annual Meeting, Fayetteville, AR, United States.
    12. Syhlman, D., Arizala, D., Dobhal, S., Alvarez, A. M., & Arif, M. (2024). Pan-genome analysis reveals a high diversity in the chromosome and megaplasmid of Ralstonia pseudosolanacearum. APS Plant Health 2024, Memphis, TN, United States.
  • 2023
    1. Arif, M., Arizala, D., Larrea-Sarmiento, A., & Dobhal, S. (2023). Genome biology and evolution of Clavibacter michiganensis. International Congress of Plant Pathology (ICPP) 2023, Lyon, France.
    2. Arif, M., & Stack, J. P. (2023). Advancement in plant pathogen diagnostics in the high-throughput sequencing era. International Congress of Plant Pathology (ICPP) 2023, Lyon, France.
    3. Boluk, G., Arizala, D., Dobhal, S., Alvarez, A. M., & Arif, M. (2023). Genomic and phenotypic biology of novel strains of Dickeya zeae. International Congress of Plant Pathology (ICPP) 2023, Lyon, France.
    4. Chuang, S. C., Dobhal, S., Alvarez, A. M., & Arif, M. (2023). Comparative genomic analyses revealed flagellar biosynthesis as a key virulence factor in the Xanthomonas euvesicatoria-panax pathosystem. APS Plant Health 2023, Denver, CO, United States.
    5. Chuang, S. C., Dobhal, S., Alvarez, A. M., & Arif, M. (2023). Three new species, Xanthomonas hawaiiensis sp. nov., Stenotrophomonas aracearum sp. nov., and Stenotrophomonas oahuensis sp. nov., isolated from Araceae. APS Plant Health 2023, Denver, CO, United States.
    6. Dobhal, S., & Arif, M. (2023). Development of recombinase polymerase amplification assays for specific detection of Xanthomonas oryzae pv. oryzae and Xanthomonas oryzae pv. oryzicola. International Congress of Plant Pathology (ICPP) 2023, Lyon, France.
    7. Dobhal, S., Arizala, D., Boluk, G., & Arif, M. (2023). Interactions and genome biology of Dickeya fangzhongdai: A potential threat to the potato industry. International Congress of Plant Pathology (ICPP) 2023, Lyon, France.
    8. Klair, D., Dobhal, S., Montesinos, S., Delorm, J., Schlub, R., Alvarez, A. M., & Arif, M. (2023). Ralstonia infection in ironwood trees negatively impacts the diversity of the endophytic microbiome. APS Plant Health 2023, Denver, CO, United States.
    9. Montesinos, S., Dobhal, S., & Arif, M. (2023). BacPath: Diagnostics pipeline for highly reliable detection of bacterial plant pathogens. APS Plant Health 2023, Denver, CO, United States.
    10. Montesinos, S., Tyagi, G., Feng, Z., Hampson, E., Adhikari, A., Minaai, M., Wong, L., Haubner, M., Arizala, D., Dobhal, S., & Arif, M. (2023). Genome-informed loop-mediated isothermal amplification (LAMP) assay for rapid and specific detection of Dickeya dadantii. APS Plant Health 2023, Denver, CO, United States.
    11. Paswan, R., Charlton, N., Jones, L., Bridges, A., & Ma, L. (2023). Prevalence of foodborne pathogens in pecan orchards under regenerative agriculture practice. Robert M. Kerr Food & Agricultural Products Center (FAPC) Research Symposium 2023, Stillwater, OK, United States.
    12. Paswan, R., Charlton, N., Jones, L., Bridges, A., & Ma, L. (2023). Prevalence of foodborne pathogens in pecan orchards under regenerative agriculture practice. Oklahoma Research Day 2023, Edmond, OK, United States.
    13. Paswan, R., Paul, S., Charlton, N., Jones, L., Bridges,A., & Ma, L. (2023). Prevalence of foodborne pathogens in pecan orchards under regenerative agriculture practice. 15th Arkansas Association for Food Protection Annual Meeting, Fayetteville, AR, United States.