Kolbasov, Vladimir


Publications
2

Residue Dynamics of Streptomycin in Citrus Delivered by Foliar Spray and Trunk Injection and Effect on ‘Candidatus Liberibacter asiaticus’ Titer

Citation
Li et al. (2021). Phytopathology® 111 (7)
Names
Ca. Liberibacter asiaticus
Abstract
Streptomycin (STR) has been used to control citrus huanglongbing (HLB) caused by ‘Candidatus Liberibacter asiaticus’ (CLas) via foliar spray. Here, we studied the residue dynamics of STR and its effect on CLas titers in planta applied by foliar spray and trunk injection of 3-year-old citrus trees that were naturally infected by CLas in the field. After foliar spray, STR levels in leaves peaked at 2 to 7 days postapplication (dpa) and gradually declined thereafter. The STR spray did not signific

The in Planta Effective Concentration of Oxytetracycline Against ‘Candidatus Liberibacter asiaticus’ for Suppression of Citrus Huanglongbing

Citation
Li et al. (2019). Phytopathology® 109 (12)
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (HLB) or greening currently is the most devastating citrus disease worldwide. The fastidious phloem-colonizing bacterium ‘Candidatus Liberibacter asiaticus’ (CLas) is the causal agent of citrus HLB in Florida. Bactericides containing the active ingredient oxytetracycline (OTC) have been used in foliar spray to control citrus HLB in Florida since 2016. However, the minimum concentration of OTC required to suppress CLas in planta remains unknown. We developed a new method for evalua