Evaluation of a Light-activated Nanoparticle Formulation of Titanium Dioxide with Zinc for Management of Bacterial Leaf Spot on Rosa 'Noare'

Bacterial leaf spot on roses caused by a Xanthomonas sp. is a new disease affecting commercial rose production with the potential to cause major economic losses. In the past few decades, antimicrobial photocatalyst technology has emerged from basic research and development to provide convenient form...

Full description

Saved in:
Bibliographic Details
Published inHortScience Vol. 48; no. 2; pp. 189 - 192
Main Authors PARET, Mathews L, PALMATEER, Aaron J, KNOX, Gary W
Format Journal Article
LanguageEnglish
Published Alexandria, VA American Society for Horticultural Science 01.02.2013
Subjects
Agronomy. Soil science and plant productions
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Pseudomonadales
Horticulture
Nanoparticle
Rosaceae
Ornamental crop
Physical environment
Disease management
Rosa
Dicotyledones
Light
Angiospermae
bacterial disease management
Pseudomonadaceae
Bacteria
Xanthomonas sp
Evaluation
Rosa spp
Plant leaf
Electromagnetic wave
Zinc
ornamental crops
Xanthomonas
Infection
Vegetative apparatus
Bacteriosis
Flower crop
Prokaryote
Spermatophyta
Microorganism
Titanium oxide
Nanotechnology
Online AccessGet full text

Cover

More Information
Summary:Bacterial leaf spot on roses caused by a Xanthomonas sp. is a new disease affecting commercial rose production with the potential to cause major economic losses. In the past few decades, antimicrobial photocatalyst technology has emerged from basic research and development to provide convenient formulations of titanium dioxide (TiO 2 ) nanoparticles, which have the ability to destroy bacteria on surfaces in the presence of light. In this study, a TiO 2 nanoparticle formulation containing zinc (TiO 2 /Zn) was tested for management of bacterial leaf spot on Rosa ‘Noare’. TiO 2 /Zn caused significant reduction in the survival of Xanthomonas sp. strain Xr-1 on glass coverslips coated with the nanoparticles on exposure to light at 3 × 10 4 lux for 10 minutes. There was no reduction of bacterial viability in non-coated or non-illuminated controls. Field applications of TiO 2 /Zn at ≈500 to 800 ppm on Rosa ‘Noare’ significantly reduced bacterial spot severity compared with the untreated control. TiO 2 /Zn activity was better or on par with the ornamental industry standard for management of rose diseases.
ISSN:0018-5345
2327-9834
DOI:10.21273/hortsci.48.2.189