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Seed treatment pepper bacterial blight12/16/2023 ![]() ![]() Nevertheless, seedborne inoculum remains a matter of paramount importance for most of these diseases. However, primary inoculum can also arise from other sources like volunteer plants, , weeds, , intact plant debris, , infected transplants, insects, and contaminated tools and equipment. These bacterial diseases are economically important to their respective hosts and in most cases, infested seeds and seedlings serve as a primary inoculum source for epidemics in the greenhouse and in the field. glycinea (Coerper) Young, Dye and Wilkie, respectively. tomato (Okabe) Young, Dye & Wilkie, Xanthomonas euvesicatoria and Pseudomonas syringae pv. ![]() michiganensis (Smith), Pseudomonas syringae pv. Examples of these include watermelon fruit blotch, ,, ,, ,, bacterial canker of tomato, , bacterial speck of tomato, bacterial spot of pepper, ,, and bacterial blight of soybean, which are caused by Acidovorax citrulli, , Clavibacter michiganensis subsp. Seedborne phytopathogenic bacteria act as primary inoculum source for many important vegetable diseases. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Ĭompeting interests: The authors have declared that no competing interests exist. The additional funding for this project came from Vidalia Onion Commission (Grant#2521RF332621). This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.įunding: This work was supported in part by Georgia Agricultural Commodity Commission for Vegetables (Grant# 2631RE682316). Received: MaAccepted: Published: June 17, 2014Ĭopyright: © 2014 Dutta et al. PLoS ONE 9(6):Įditor: Dawn Arnold, University of the West of England, United Kingdom In addition, it was also observed that flowers and seeds of non-host plants can be colonized by compatible/incompatible/null-interacting bacteria to higher populations however, the level of colonization differed significantly depending on the type of bacterial species used.Ĭitation: Dutta B, Gitaitis R, Smith S, Langston D Jr (2014) Interactions of Seedborne Bacterial Pathogens with Host and Non-Host Plants in Relation to Seed Infestation and Seedling Transmission. These results indicate that the seeds of non-host plants can become infested with incompatible and null-interacting bacterial species through flower colonization and they can be transmitted via epiphytic colonization of seedlings. None of the seedlots with incompatible/null-interacting bacteria developed symptoms on seedlings however, when seedlings were assayed for epiphytic bacterial presence, 19.5 and 9.4% of the lots were positive, respectively. The percentage of seedlots infested with null-interacting bacterial species was 16.8% (by plating) and it was significantly lower than the infested lots generated with compatible and incompatible bacterial pathogens (P = 0.03). The mean percentage of seedlots infested with compatible and incompatible pathogens was 31.7 and 30.9% (by plating), respectively and they were not significantly different (P = 0.67). Additionally, seedlots for each host/non-host bacterial species combination were also assayed for pathogen transmission by seedling grow-out (SGO) assays under greenhouse conditions. ![]() Seeds harvested from each host/non-host bacterial species combination were assayed for respective bacteria by plating on semi-selective media. Flowers of host and non-host plants were inoculated with 1×10 6 colony forming units (CFUs)/flower for each bacterial species and allowed to develop into fruits or umbels (in case of onion). A non-pathogenic, pigmented strain of Serratia marcescens was also included to assess a null-interacting situation with the same plant species. glycinea) to infest seeds of host and non-host plants (watermelon, tomato, pepper, and soybean) and subsequent pathogen transmission to seedlings was investigated. tomato, Xanthomonas euvesicatoria, and Pseudomonas syringae pv. The ability of seed-borne bacterial pathogens (Acidovorax citrulli, Clavibacter michiganensis subsp. ![]()
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