The National Onion Bacterial Strain Collection (NOBSC), a Repository of Over 2,200 Publicly Available Bacterial Strains Isolated from Onion

The National Onion Bacterial Strain Collection (NOBSC) is a publicly accessible resource comprising more than 2,200 bacterial strains isolated primarily from diseased onion plants across major U.S. onion producing regions. Developed as part of the United States Department of Agriculture National Institute of Food and Agriculture Specialty Crops Research Initiative project “Stop the Rot” (Award No. 2019-51181-30013), the NOBSC represents a substantial curated collection of onion associated bacteria available to the research community. The collection includes strains from genera that include species with important onion pathogens, Burkholderia, Enterobacter, Pantoea, Pseudomonas, Rahnella, and Xanthomonas, as well as isolates of more than 130 other genera recovered from symptomatic onion tissues (foliage and bulbs). Accompanying metadata includes geographic origin, host tissue type, phenotypic assessments (including onion pathogenicity assays), and 16S rRNA based genus assignments. The NOBSC provides an excellent resource for plant pathology studies, comparative genomics, and the development of molecular diagnostic tools, as well as standardized strain material for phenotypic screening of onion germplasm for resistance to bacterial pathogens. All strains are available for request from https://nobsc.alliumnet.com/ at cost recovery rates, contingent on the requester having appropriate permitting. The collection is maintained at the University of Georgia.

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Publication Details

Journal
PhytoFrontiers™
Published
2026-06-18
DOI
https://doi.org/10.1094/phytofr-02-26-0024-a
Primary Topic
Plant Pathogenic Bacteria Studies
Type
article
Field-Weighted Citation Impact
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article

The National Onion Bacterial Strain Collection (NOBSC), a Repository of Over 2,200 Publicly Available Bacterial Strains Isolated from Onion

Teresa Coutinho, Manzeal Khanal, Gi Yoon Shin, Subas Malla et al.
PhytoFrontiers™
Plant Pathogenic Bacteria Studies
article

The National Onion Bacterial Strain Collection (NOBSC), a Repository of Over 2,200 Publicly Available Bacterial Strains Isolated from Onion

Teresa Coutinho, Manzeal Khanal, Gi Yoon Shin, Subas Malla, Mei Zhao, Lindsey J. du Toit, C. S. Cramer, M. L. Derie, Antoinette Machado Burke, James Woodhall, Jo Ann Asselin, Brian Kvitko, Rob Wilson, Mark Uchanski, Ram Neupane, Brenna Aegerter, Michelle Pena MacLellan, Bhabesh Dutta, Jane Davey, Heather MacKay, Jaspreet Sidhu, Benjamin Wood, Christy Hoepting, Joseph LaForest, Claudia Nischwitz, Amy Smith, Josh Rosnow, Beth Gugino, Jennie Mazzone, Krunal Patel, Paul Stodghill
article en

Abstract

The National Onion Bacterial Strain Collection (NOBSC) is a publicly accessible resource comprising more than 2,200 bacterial strains isolated primarily from diseased onion plants across major U.S. onion producing regions. Developed as part of the United States Department of Agriculture National Institute of Food and Agriculture Specialty Crops Research Initiative project “Stop the Rot” (Award No. 2019-51181-30013), the NOBSC represents a substantial curated collection of onion associated bacteria available to the research community. The collection includes strains from genera that include species with important onion pathogens, Burkholderia, Enterobacter, Pantoea, Pseudomonas, Rahnella, and Xanthomonas, as well as isolates of more than 130 other genera recovered from symptomatic onion tissues (foliage and bulbs). Accompanying metadata includes geographic origin, host tissue type, phenotypic assessments (including onion pathogenicity assays), and 16S rRNA based genus assignments. The NOBSC provides an excellent resource for plant pathology studies, comparative genomics, and the development of molecular diagnostic tools, as well as standardized strain material for phenotypic screening of onion germplasm for resistance to bacterial pathogens. All strains are available for request from https://nobsc.alliumnet.com/ at cost recovery rates, contingent on the requester having appropriate permitting. The collection is maintained at the University of Georgia.

PhytoFrontiers™
New Mexico State University (US), Valdosta State University (US), Intermountain Healthcare (US), Utah State University (US), Pennsylvania State University (US), University of Arizona (US), Mount Vernon Nazarene University (US), University of Idaho (US), University of Georgia (US), Texas A&M University System (US), Cornell University (US), Abraham Baldwin Agricultural College (US), Foreign Agricultural Service (US), Virginia Cooperative Extension (US), Park University (US), Robert W. Holley Center for Agriculture & Health (US), Pennsylvania Chamber of Business and Industry (US), Cornell Cooperative Extension Association of Jefferson County (US), Skagit Valley College (US), University of Pretoria (ZA), Colorado State University (US)
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