Antibacterial effect of copper composites against Xanthomonas euvesicatoria
| Autor: | Swadeshmukul Santra, Sanju Kunwar, Jeffrey B. Jones, Jim Freeman, Gerald V. Minsavage, Mikhaeel Young, Qiurong Fan, Susannah Da Silva, Ying-Yu Liao, Mathews L. Paret |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Strain (chemistry) Statistical difference chemistry.chemical_element Antibacterial effect Biology Antimicrobial 01 natural sciences Copper 010602 entomology Xanthomonas euvesicatoria chemistry Untreated control Pepper Composite material Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Crop Protection. 139:105366 |
| ISSN: | 0261-2194 |
| DOI: | 10.1016/j.cropro.2020.105366 |
| Popis: | Bacterial spot disease caused by Xanthomonas euvesicatoria is one of the major constraints for pepper production in Florida and worldwide. The common prevalence of copper (Cu)-tolerant X. euvesicatoria strains has reduced the efficacy of Cu based bactericides against bacterial spot of pepper. In this study, we evaluated antimicrobial activity of three Cu-based nanocomposites, namely, core-shell Cu (CS–Cu), fixed-quat Cu (FQ-Cu) and mixed-valence Cu (MV-Cu), along with Kocide® 3000, which is a micron size metallic Cu bactericide and is commercially available, both in vitro and in greenhouse trials, against a Cu-tolerant strain of X. euvesicatoria. In repeated in vitro tests, X. euvesicatoria growth was completely inhibited 24 h after exposure of bacterial cells to 500 and 1000 μg/ml of MV-Cu and all concentrations of FQ-Cu and CS-Cu (100, 200, 500, and 1000 μg/ml) treated for 1 h. Micron size copper, even at 1000 μg/ml, had no statistical difference in growth in comparison to the untreated control (P = 0.05; LSD). In the repeated greenhouse experiments, plants treated with all the copper composites exhibited less bacterial spot severity than untreated control and similar or significantly less than Cu-mancozeb (P |
| Databáze: | OpenAIRE |
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