Potassium bicarbonate reduces postharvest decay development on bell pepper fruits

Fallik, Elazar; Grinberg, Sarina; Ziv, O.

doi:10.1080/14620316.1997.11515489

Cited by 65 publications

(33 citation statements)

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“…The inhibitory effect of sodium bicarbonate on microorganisms may be due to reduction of cell turgor that causes a collapse and shrinkage of hyphae and spores, resulting in fungistasis (Fallik et al 1997).…”

Section: Discussionmentioning

confidence: 99%

Salts Application for Suppressing Potato Early Blight Disease

El-Mougy¹,

Abdel-Kader²

2009

Journal of Plant Protection Research

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Abstract:The suppressive effect of sodium and calcium salts applied individually or combined with the yeast Saccharomyces cerevisiae against Alternaria solani the causal agent of early blight disease of potato was evaluated under laboratory, greenhouse and field conditions. In vitro test a complete inhibition in fungal growth was observed at concentration of 30 mg/ml of both sodium bicarbonate and calcium chloride. The commercial backing yeast S. cerevisiae (CBY) enhanced the inhibitory effect of tested salts reflected in increasing mycelial fungal growth reduction when combined at the rate of 1:1 at each concentration tested. In pot experiment, under artificial infestation with pathogenic fungus, application of sodium bicarbonate or calcium chloride significantly reduced the early blight incidence and severity by increasing their concentrations. Their most effective concentration were 30 mg/ml that reduced the disease incidence by 50 and 62.4%, respectively. Superior effect of sodium bicarbonate or calcium chloride in disease reduction was observed when they combined with CBY. Field trails for evaluating the most promising greenhouse treatments were preformed under natural infestations during two successive summer seasons. Calcium chloride proved higher efficacy for reducing both disease incidence and severity than that of sodium bicarbonate when applied either alone or combined with CBY. Also, it is observed that increasing concentrations of both sodium bicarbonate or calcium chloride showed parallel decrease in disease incidence and severity. Application of (CBY) enhanced the efficacy of salts spraying against early blight disease. Similar trend was also observed with the increase of potato tubers yield. On the light of the present study it could be suggested that the usage of combined application of the yeast S. cerevisiae with sodium bicarbonate or calcium chloride might be used as easily applied, safely and cost effective control methods against such plant diseases.

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Section: Discussionmentioning

confidence: 99%

Salts Application for Suppressing Potato Early Blight Disease

El-Mougy¹,

Abdel-Kader²

2009

Journal of Plant Protection Research

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“…This suggests that PBC boosts the formation of ellagic acid derivatives, which are known to possess antimicrobial activity [25]. Bicarbonate salts similarly provide broad-spectrum antimicrobial activity [26]. Plants often increase the accumulation of specific compounds, such as ellagic acid and its derivatives, to better resist various stress condition.…”

Section: Phenolic Content In Strawberry Fruitmentioning

confidence: 99%

Alternative products against anthracnose affect selected primary and secondary metabolites in strawberry fruit

Weber¹,

Veberič²,

Reščič³

et al. 2016

Fruits

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-Introduction. Anthracnose disease causes severe economic losses in strawberry (Fragaria × ananassa) production. Plant response to the pathogen attack is closely linked to its content and composition of polyphenols. In order to reduce the damage caused by pathogens, organic and inorganic fungicides are applied. The aim was to determine the influence of selected fungicides on various metabolites in strawberry fruit. Materials and methods. The efficiency of potassium bicarbonate (PBC) and acetic acid (AA) was compared with the control and a fungicide treatment in the strawberry cv. Elsanta. To examine the possible effects of these fungicides, artificial inoculation was performed in all treatments except for the control. The percentage of infected fruits and the content of selected primary and secondary metabolites in non-infected and infected fruits were determined. Results and discussion. Both analyzed inorganic fungicides proved effective against anthracnose. AA treated fruits were the least infected (only 4%), followed by PBC, fungicide and control. The highest percentage (9.26%) of infected fruits was determined following artificial infection treatment. Total sugar content decreased for 32% in infected control and AA treated fruits. PBC treatment exhibited a positive effect on the organic acid content in comparison with other treatments. The content of phenolic compounds was higher in PBC treated fruits and did not change significantly after infection. Infection increased the total flavonol content of the fruit. Conclusion. The use of PBC and AA potentially present a prospective protection in the strawberry orchards especially for controlling anthracnose in organic fruit crops.Keywords: strawberry / Fragaria × ananassa / anthracnose (Colletotrichum spp.) / alternative fungicides / biological control / integrated disease management / phenolics Résumé -Des produits alternatifs contre l'anthracnose affectent certains métabolites primaires et secondaires de la fraise. Introduction. L'anthracnose provoque des pertes économiques importantes en production de fraises (Fragaria × ananassa). La réponse de la plante à l'attaque des agents pathogènes est étroitement liée à sa teneur et à sa composition en polyphénols. Pour réduire les dommages causés par les agents pathogènes, des fongicides organiques et inorganiques sont appliqués. Nous avons cherché à déterminer l'influence de ces fongicides sur certains métabolites présents dans la fraise. Matériel et méthodes. L'efficacité du bicarbonate de potassium (PBC) et de l'acide acétique (AA) a été comparée à celle du contrôle et d'un traitement fongicide sur le cultivar Elsanta. En vue d'examiner les effets potentiels de ces fongicides, une inoculation artificielle a été réalisée pour tous les traitements sauf pour le contrôle. Le pourcentage de fruits infectés, ainsi que le contenu en certains métabolites primaires et secondaires contenus dans les fruits non infectés et infectés ont été déterminés. Résultats et discussion. Les deux fongicides inorganiques étudiés s...

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“…Plant protection compounds may be fungicides that target oxalate production in the pathogen or "buffering" agents. The partial protection by some carbonate salts against B. cinerea infection may be related to such a buffering mechanism (Fallik et al 1997;Gabler and Smilanick 2001). Some transgenic crop plants have been generated that degrade oxalic acid and are more resistant to S. sclerotiorum (Donaldson et al 2001;Livingstone et al 2005; Thompson et al 1995).…”

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confidence: 99%

Oxalate-Degrading Bacteria Can ProtectArabidopsis thalianaand Crop Plants AgainstBotrytis cinerea

Schoonbeek¹,

Jacquat-Bovet²,

Mascher³

et al. 2007

MPMI

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Botrytis cinerea and Sclerotinia sclerotiorum secrete oxalic acid as a pathogenicity factor with a broad action. Consequently, it should be possible to interfere with the infection process by degrading oxalic acid during the interaction of these pathogens with their hosts. We have evaluated the potential of oxalate-degrading bacteria to protect plants against pathogenic fungi. Such bacteria were isolated from agricultural soil and selected on agar plates with Ca-oxalate as the sole carbon source. Four strains were retained with a medium-to-strong protective activity on Arabidopsis thaliana leaves against B. cinerea and S. sclerotiorum. They can provide 30 to 70% protection against fungal infection in different pathosystems, including B. cinerea on A. thaliana, cucumber, grapevine, and tomato. The oxalatedegrading bacteria induced only some marker genes for common plant signaling pathways for defenses, but protective effects were slightly reduced in A. thaliana mutants impaired in the ethylene and jasmonic acid signaling pathways. More detailed studies on the protective mechanism were performed in ox-strain B, identified as Cupriavidus campinensis, by analysis of transposon-tagged mutants that have a reduced ability to degrade oxalic acid.

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Potassium bicarbonate reduces postharvest decay development on bell pepper fruits

Cited by 65 publications

References 0 publications

Salts Application for Suppressing Potato Early Blight Disease

Salts Application for Suppressing Potato Early Blight Disease

Alternative products against anthracnose affect selected primary and secondary metabolites in strawberry fruit

Oxalate-Degrading Bacteria Can ProtectArabidopsis thalianaand Crop Plants AgainstBotrytis cinerea

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