Resources

Journal Articles

• Myers, B., Lamichhane, A., Kvitko, B., and Dutta, B. 2025. NLP-like Deep Learning Aided in Identification and Validation of Thiosulfinate Tolerance Clusters in Diverse Bacteria. mSphere (in press)
• Paudel, S., Franco, Y., Zhao, M., Dutta, B., and Kvitko, B. 2025. Distinct virulence mechanisms of Burkholderia gladioli in onion foliar and bulb scale tissues. Mol. Plant Microbe Interact. (in press)
• Paudel, S., Dutta, B., and Kvitko, B. 2024. Onion pathogenic Burkholderia species: Role and regulation of characterized virulence determinants. Plant Pathology (in press) 
• Paudel, S., Zhao, M., Dutta, B., and Kvitko, B. 2024. Thiosulfinate tolerance gene clusters are common features of Burkholderia onion pathogens. Mol. Plant Microbe Interact. 37: 507-519.
• Paudel, S., Dutta, B., and Kvitko, B. 2024. Onion pathogenic Burkholderia species: Role and regulation of characterized virulence determinants. Plant Pathology (in press)
• Koirala, S. Shin, G. Y., Kvitko, B., and Dutta, B. 2024. Integrating biocontrol agents with copper for center rot management in onion. Crop Protection 184: 106785.
• de Jesus, H.I., Cassity-Duffey, K., Dutta, B., da Silva, A.L.B.R., Coolong, T. 2024. Influence of Soil Type and Temperature on Nitrogen Mineralization from Organic Fertilizers. Nitrogen 5: 47–61. https://doi.org/10.3390/nitrogen5010004.
• Paudel, S., Zhao, M., Dutta, B., and Kvitko, B. 2024. Thiosulfinate tolerance gene clusters are common features of Burkholderia onion pathogens. Molecular Plant Microbe Interactions (first look). Abstract available at https://apsjournals.apsnet.org/doi/10.1094/MPMI-01-24-0005-R
• Lenon, K.M., Dutta, B., Coma, M. Q., Johnson, W., and Schmidt, J. 2024. From weeds to natural enemies: implications of weed cultivation and biopesticides for organic onion production. Journal of Economic Entomology (in press).
• De Jesus, H., Cassity-Duffey, K., da Silva, A. L. B. R., Dutta, B., Coolong, T. 2023. Influence of organic fertilizer sources and application rates on onion production in Georgia, USA. HortTechnology (in press)
• Shin, G.Y., Dutta, B., and Kvitko, B. 2023. The genetic requirements for HiVir-mediated onion necrosis by Pantoea ananatis, a necrotrophic plant pathogen. Mol. Plant Microbe Interact. Available at https://apsjournals.apsnet.org/doi/10.1094/MPMI-11-22-0246-R
• Koirala, S., Myers, B., Shin, G.Y., Gitaitis, R., Kvitko., B., and Dutta, B. 2023. Evaluating options to increase the efficacy of biocontrol agents for the management of Pantoea spp. under field conditions. Plant Disease (first look). Abstract available at https://apsjournals.apsnet.org/doi/10.1094/PDIS-11-22-2710-RE
• Myers, B. Shin, G.Y., Stice, S., Agarwal, G., Gitaitis, R., Kvitko, B., and Dutta, B.  2023. Genome-wide association and dissociation studies in P. ananatis reveal potential virulence factors affecting Allium porrum and A. fistulosum x A. cepa hybrid. Frontiers in Microbiology 13:1094155. Available at https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.1094155/full
• Zhao, M., Shin, G.Y., Stice, S., Coutinho, T., Gitaitis, R., Kvitko, B., and Dutta, B.  2023.  A novel biosynthetic gene cluster across the Pantoea species complex is important for pathogenicity in onion.  Mol. Plant Microbe Interact. Available at https://apsjournals.apsnet.org/doi/10.1094/MPMI-08-22-0165-R
• Zhao, M., Tyson, C., Gitaitis, R.,  Kvitko, B., and  Dutta, B. 2022. Rouxiella badensis, a new bacterial pathogen of onion causing bulb rot. Frontiers in Microbiology 13:1054813. Available at https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.1054813/full

Extension bulletins

• Koirala, S. and B. Dutta. 2024. Does Peroxide Increase the Efficacy of Biocontrol Agents to Manage Center Rot in Organic Onion? Available at https://www.eorganic.info/sites/eorganic.info/files/u461/Onion%20pamphlet.pdf
• Dutta, B., and Gitaitis, R.D. 2022. Disease quiz III. Onion World Magazine. December 2022. Available at https://onionworld.net/2020/08/24/onion-disease-quiz/
• Dutta, B., and Gitaitis, R. 2020. Bacterial Diseases of onion in Georgia. University of Georgia Cooperative Extension Bulletin B1534. Available at https://secure.caes.uga.edu/extension/publications/files/pdf/B%201534_1.PDF

Popular Press Articles

• Thompson, C. 2025. Georgia Vidalia Onion Farmers: Protect Omega 500F Fungicide. Vegetable and Specialty Crop News. May, 2025 (edits provided by B. Dutta)
• Thompson, C. 2025. UGA Extension to Host Vidalia Onion Meeting. Vegetable and Specialty Crop News. February, 2025 (edits provided by B. Dutta)
• Thompson, C. 2025. Georgia Vidalia Onion Growers Be Wary of ‘Destructive’ Downy Mildew Disease. Vegetable and Specialty Crop News.  March, 2025 (edits provided by B. Dutta
• Thompson, C. 2023. Major Scientific Breakthrough in Onion Research. Vegetable and Specialty Crop News, April 2023. (edits provided by B. Dutta). Available at https://specialtycropgrower.com/major-scientific-breakthrough-in-onion-research/
• Thompson, C. 2023. Downy Mildew Discovered in Vidalia Onion. Vegetable and Specialty Crop News, March 2023. (edits provided by B. Dutta). Available at https://specialtycropgrower.com/downy-mildew-discovered-in-vidalia-onion/
• Thompson, C. 2023. Producers Beware: Downy Mildew Disease a Threat for Vidalia Onions. Vegetable and Specialty Crop News, February 2023. (edits provided by B. Dutta)  
• Dutta, B., Grey, T., and Schmidt, J. 2022. Neglecting weeds can lead to late-season disease in organic onions. Specialty Crop News. March 2022. Available at https://specialtycropgrower.com/neglecting-weeds-can-lead-to-late-season-disease-in-organic-onions/
• Dutta, B., DevKumar, G., Kvitko, B.H., and Naikare, H. 2021. Studying Salmonella contamination in onion. Vegetable and Specialty Crop News, August 2021. Available at https://specialtycropgrower.com/onion-georgia-salmonella-contamination/
• Sierra, L. 2021. New “Onion Devourer” Bacteria Found by University of Georgia Researchers. USDA NIFA Newsletter, December, 2021. (edits provided by B. Dutta). Available at https://www.nifa.usda.gov/about-nifa/impacts/new-onion-devourer-bacteria-found-university-georgia-researchers

Presentations

• 9/26/2025. Ramachandran, R., Mowrer, J. “Biofumigation with Mustard (Brassicaceae) can alter Nitrogen mineraliztion and nitrification of organic fertilizers". University of Agriculture and Veterinary Medicine. Life Sciences for Sustainability Conference, Cluj Napoca, RO. September 26, 2024.
• 11/11/2025. Ramachandran, R. Mowrer, J.E.and Isakeit, T. “Does Mustard Biofumigation Inhibit Nitrogen Dynamics ?” ASA CSSA SSSA CANVAS International Meetings San Antonio, Texas. November 11, 2025.
• 7/28/2025-8/1/2025. L Pullium, J.J. K. Cassity-Duffey, and T. Coolong 2025. Biofumigation Blast: Battling soil-borne bacteria organically. ASHS. New Orleans, LA. Abstract available at HortScience. 60:S194 https://journals.ashs.org/hort/hort/published/rest/pdf-watermark/v1/journals/hortsci/60/7S/article-pS1.pdf/watermark-pdf/
• 11/8/2025. Thiruvikram, S., Somenahally, A., Thorn, R., & Neupane, P. 2025. Biofumigation Impacts on Root Mycorrhizal Interactions in Organic Onions. CANVAS International Annual Meetings, Nov 8-12, 2025. Salt Lake City, UT
• Neupane P., Somenahally A., Gentry T., Aguilar C. (2024) Evaluating disease suppression and soil health properties under organic practices for vegetable production. ASA, CSSA and SSSA International Annual Meetings, Nov 10-12, 2024. San Antonio, TX
• 10/31/2024: Perilous Pantoea: Lessons learned in bacterial disease of onion in Georgia (KSU, zoom)
• 04/09/2024: No more teary eyes: A comprehensive tool-kit for center rot management in Vidalia onions (UFL, Gainesville, FL)
• 12/06/2023: Combating onion bacterial diseases with pathogenomic tools & enhanced management strategies (Grand Rapids, MI)
• 11/30/2023: A Micro- and Macro-Perspective of Bacterial Pathogens Affecting Onion in Georgia (San Antonio, TX)
• 09/18/2023: Peeling Onion Layers: Bridging Gaps in bacterial disease management utilizing basic and applied research (Cornell, NY)

Posters

• Mitchell, B., K. Cassity-Duffey, T. Coolong, L. Dunn, M. Okeh, and J. Widmer. 2025. Control of Escherichia coli TVS 353 in certified organic soils using a biofumigant mustard cover crop. IAFP Jul 27-30, Cleveland, OH. 
• Isakeit, T. 2025. Poster presentation at American Phytopathological Society Annual meeting, “Using Solarization to Control Bacteria-Vectoring Nematode Populations”