Comparison of Foliar Spray Efficacy of Electrolytically Ozonated Water and Acidic Electrolyzed Oxidizing Water for Controlling Powdery Mildew Infection on Cucumber Leaves

Fujiwara, Kazuhiro; Fujii, T.; Park, Jong‐Seok

doi:10.1080/01919510802587358

Cited by 18 publications

(12 citation statements)

References 18 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In particular, the application of ozonated water (O 3 wat) directly to plants as soil drench or foliar spray applications can be used as an alternative method for disease control in innovative crop protection schemes, especially with respect to the lack of chemical residues in plants. To date, only a few studies on the impact of gaseous ozone or O 3 wat in the control of RKNs and of some airborne pathogens are available . No information about the possible control of plant pathogenic viruses by O 3 wat is available at present.…”

Section: Introductionmentioning

confidence: 99%

Ozone treatments activate defence responses against Meloidogyne incognita and Tomato spotted wilt virus in tomato

Prigigallo

Melillo

Bubici

et al. 2019

Pest Management Science

View full text Add to dashboard Cite

BACKGROUND: Ozonated water (O 3 wat) soil drench and/or foliar spray applications were evaluated for their potential to control the root-knot nematode Meloidogyne incognita (RKN) and the airborne pathogen Tomato spotted wilt virus (TSWV) in tomato. We investigated how O 3 wat modulates the salicylic acid/jasmonic acid/ethylene (SA/JA/ET) signalling network in the host, locally and systemically, to induce resistance to nematode and virus. RESULTS: The application as soil drench was effective in reducing the number of galls and egg masses, but did not reduce the incidence and severity of TSWV infection. Conversely, O 3 wat applied by foliar spray decreased TSWV disease incidence and severity (−20%), but was not able to control M. incognita infection. SA-related genes were generally upregulated in both locally treated and systemically reached tissues, showing a positive action of the O 3 wat treatment on SA signalling. Neither O 3 wat application method significantly altered JA-related gene expression in either direction. ET-related genes were differentially regulated by root or leaf treatments, indicating that O 3 wat may have different effects on ET-mediated signalling in different organs. JA/ET/SA related pathways were differentially modulated by O 3 wat in the presence of either RKN or TSWV. CONCLUSION: O 3 wat had a higher efficacy when applied directly to organs challenged by the pathogens, although it was potentially able to stimulate defence responses through the activation of SA signalling. Owing to its safety and effectiveness in controlling nematode and virus infections, O 3 wat can be considered as a possible alternative tool for sustainable disease management practices.

show abstract

Section: Introductionmentioning

confidence: 99%

Ozone treatments activate defence responses against Meloidogyne incognita and Tomato spotted wilt virus in tomato

Prigigallo

Melillo

Bubici

et al. 2019

Pest Management Science

View full text Add to dashboard Cite

show abstract

“…Recently, interest has been shown in the use of sprayed ozonated water (O 3 wat) directly onto plants in order to control diseases. For example, O 3 wat has been used as an alternative to chemicals for the control of powdery mildew on cucumbers (Fujiwara and Fujii, ; Fujiwara et al ., ) or other airborne diseases, including early blight and leaf mould on tomato (He et al ., ). Few studies have explored the impact of O 3 wat on the control of soil‐borne pathogens on tomato (Ciccarese et al ., ) and little information exists on the use of O 3 wat as a new sustainable pest control strategy against nematodes (Sasanelli et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Ozonated water reduces susceptibility in tomato plants to Meloidogyne incognita by the modulation of the antioxidant system

Veronico

Paciolla

Sasanelli

et al. 2016

Molecular Plant Pathology

View full text Add to dashboard Cite

Few studies have been carried out on the effect of ozonated water (O wat) on the oxidative stress of root systems and, in particular, in combination with biotic stress. The aim of this study was to determine whether aqueous ozone is effective in the control of root-knot nematode (RKN) infection and to investigate the concomitant changes in the basal defence system. A tomato cultivar susceptible to Meloidogyne incognita was treated with O wat as a soil drench. No negative effects were seen following ozone application in comparison with the control under the exposure conditions used. The treatment reduced significantly the nematode infection rate and induced changes in the morphology of nematode feeding sites, some of which were characterized by visible symptoms of senescence. The antioxidant response, as well as parameters of oxidative damage, were examined in untreated and O wat-treated galls at 2, 4 and 7 days after inoculation and compared with uninfected roots. High levels of reactive oxygen species (ROS), H O and malondialdehyde were generated in galls in response to combined abiotic and biotic stresses. Throughout the experimental period, the activities and relative transcript levels of the antioxidant enzymes catalase, superoxide dismutase and ascorbate peroxidase produced different responses when exposed to ozone treatment and/or infection. The results demonstrate how O wat protects tomato against the RKN M. incognita through the modulation of basal defence mechanisms.

show abstract

“…OW with a dissolved ozone concentration (DOC) of 4.0 mg L −1 (Fujiwara and Fujii, 2002) or 8.0 mg L −1 (Fujiwara et al, 2009) was intermittently sprayed 4 times for 2 weeks for controlling powdery mildew infection; no visible injury, i.e., yellowing, chlorosis, necrosis, or malformation, was observed on the cucumber leaves at later growth stages. However, spraying OW daily or even more frequently in an attempt to increase the efficacy of disease control may cause visible injury to horticultural plants, especially in the early growth stages.…”

Section: Introductionmentioning

confidence: 99%

“…Ozonated water (OW) can be used as an alternative to agricultural chemicals for controlling powdery mildew on cucumber (Fujiwara and Fujii, 2002;Fujiwara et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Spraying Ozonated Water under Well-Ventilated Conditions Does Not Cause Any Visible Injury to Fruit-Vegetable Seedlings

Fujiwara

Hayashi

Park

2011

Ozone: Science & Engineering

Self Cite

View full text Add to dashboard Cite

To determine whether horticultural plants are visibly injured by being sprayed with ozonated water (OW) for airborne-disease control, we sprayed OW with a dissolved ozone concentration (DOC) of 4.0 or 8.0 mg L −1 or distilled water (DW) on melon (Cucumis melo L. 'Andes'), tomato (Lycopersicon esculentum M. 'Momotaro-York'), watermelon (Citrullus lanatus M. 'Fujikou'), cucumber (Cucumis sativus L. 'Sharp'), green pepper (Capsicum annuum L. 'Kyounami'), and eggplant (Solanum melongena L. 'Senryo-nigou') seedlings underwell-ventilated conditions. The OW and DW were sprayed on the seedlings at 10 a.m. and 2 p.m. on 3 successive days. No yellowing, chlorosis, necrosis, or malformation was observed for any of the seedlings during this period and also 1 day after the last OW spraying. These results indicate that intensive spraying of OW with a high DOC, for airborne-disease control, does not cause any visible injury to the fruit-vegetable seedlings used as long as the spraying is carried out under well-ventilated conditions.

show abstract

Comparison of Foliar Spray Efficacy of Electrolytically Ozonated Water and Acidic Electrolyzed Oxidizing Water for Controlling Powdery Mildew Infection on Cucumber Leaves

Cited by 18 publications

References 18 publications

Ozone treatments activate defence responses against Meloidogyne incognita and Tomato spotted wilt virus in tomato

Ozone treatments activate defence responses against Meloidogyne incognita and Tomato spotted wilt virus in tomato

Ozonated water reduces susceptibility in tomato plants to Meloidogyne incognita by the modulation of the antioxidant system

Spraying Ozonated Water under Well-Ventilated Conditions Does Not Cause Any Visible Injury to Fruit-Vegetable Seedlings

Contact Info

Product

Resources

About