Occurrence and Prevalence of the Bacterial Onion Bulb Rot Pathogens in Egypt.

Mansour, F. S.; Abdallah, Mohamed; Haroun, Samia; Gomaa, A. S.; Badr, Huda

doi:10.21608/jppp.2011.84680

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…Two isolates of the onion bacterial rot pathogens; Erwinia carotovora subsp. carotovora (Ecc) and Burkholderia cepacia (Bc) were recovered and identified in a previous study by Mansour et al (2011).…”

Section: A T E R I a L S A N D M E T H O D Smentioning

confidence: 99%

Exploitation of Biostimulants as an Alternative Strategy to Control Bacterial Rot Diseases of Onion (Allium cepa L.)

Gomah¹,

Abdallah²,

Haroun

et al. 2015

Egyptian Journal of Phytopathology

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acterial soft rots, commonly caused by Erwinia carotovora subsp. carotovora or Erwinia chrysanthemi, and slippery skin, caused by Burkholderia gladioli subsp. allicola as well as sour skin, caused by Burkholderia cepacia of onion bulbs are among the most serious storage diseases of onion (Allium cepa L.) that lead to great loss in bulbs. In this study some biostimulants; chitosan, seaweed extract and humic acid were in vivo tested on onion plants, to determine their controlling potential against bacterial rot diseases. Application of biostimulants proved to be effective in reducing the bacterial rot in stored onion bulbs. All tested biostimulants increased photosynthetic pigments content in onion leaves and total phenols content in onion bulbs, meanwhile they declined lipid peroxidation and the electrolyte leakage percentage in onion bulbs. As a summary, chitosan, seaweed extract and humic acid could be applied to improve plant growth and stimulate plant defense against diseases in concern. These materials are cheap, available, easy to apply, hazardless and environmentally safe.

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Section: A T E R I a L S A N D M E T H O D Smentioning

confidence: 99%

Exploitation of Biostimulants as an Alternative Strategy to Control Bacterial Rot Diseases of Onion (Allium cepa L.)

Gomah¹,

Abdallah²,

Haroun

et al. 2015

Egyptian Journal of Phytopathology

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“…Bacterial rots of onion are among the most serious storage diseases of bulbs that may be categorized into at least three different diseases; soft rot (caused by Pectobacterium carotovorum or Dickeya chrysanthemi), slippery skin (caused by Burkholderia gladioli subsp. allicola) and sour skin (caused by Burkholderia cepacia) (Chaput, 1995McNab, 2004and Mansour et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

“…The rot bacteria are soil borne, but their symptoms on onion bulbs develop in storage and/or transit when the surrounding conditions are favored such as humid conditions and warm temperature. The bacterial rot symptoms include watery rot of the bulb fleshy scales and discoloration of the scales from pale yellow to brown, the rotten bulbs have an offensive smell (Mansour et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Combined Effect of Streptomyces coelicolor and Arbuscular Mycorrhizal Fungi on Controlling Onion Bacterial Rots

Badr

El-Sharkawy

2018

Journal of Plant Protection and Pathology

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Bacterial rots are among the most serious diseases of onion that is being appeared in storage and/or transit. This research aimed to investigate effect of the combined application of Streptomyces coelicolor, and arbuscular mycorrhizal fungi (AMF) on controlling onion bacterial rots. S. coelicolor and AMF, individual or in combination, a significant decrease in the disease incidence was shown with superiority of the combined treatment. Total phenol content of plants and polyphenol oxidase and peroxidase enzymes were significantly increased in response to this application. However, a significant decrease in lipid peroxidation was recorded. According to their distinguished efficiency and known remarkable eco-safety, this combination can possibly be used in the biological control of bacterial rot diseases of onion. Further greater application may be tried.

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“…Two strains of the onion bacterial rot pathogens, namely Erwinia carotovora subsp. carotovora (Ecc) and Burkholderia cepacia (Bc) were isolated and identified in a previous study by Mansour et al (2011).…”

mentioning

confidence: 99%

Intrinsic Onion Resistance against Bacterial Bulb Rots by Chemical Inducers

Haroun

Abdallah

Gomah

et al. 2016

Egyptian Journal of Phytopathology

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acterial bulb rots of onion are among the most serious storage diseases that lead to great loss in the yield. In this study, sodium salicylate, ascorbic acid and thiamine hydrochloride were tested as resistance inducers on onion plants grown under in vivo condition to evaluate their potentials in controlling the bacterial rot diseases. The tested inducers were found to be effective in decreasing the bacterial rot incidence in stored onion bulbs. The treatments significantly increased the total phenols and significantly declined lipid peroxidation and the electrolyte leakage in onion bulbs indicating their potentials to induce the natural resistance. Moreover, the inducertreated plants showed an increase in photosynthetic pigments content and foliar growth compared to the untreated control, justifying the role of chemical inducers in improving plant growth. It could be concluded that, the application of some chemicals to induce the intrinsic resistance in plants is a safe and effective tool in controlling plant diseases that can replace and minimize the hazardous effects of chemical pesticides.

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Occurrence and Prevalence of the Bacterial Onion Bulb Rot Pathogens in Egypt.

Cited by 4 publications

References 7 publications

Exploitation of Biostimulants as an Alternative Strategy to Control Bacterial Rot Diseases of Onion (Allium cepa L.)

Exploitation of Biostimulants as an Alternative Strategy to Control Bacterial Rot Diseases of Onion (Allium cepa L.)

Combined Effect of Streptomyces coelicolor and Arbuscular Mycorrhizal Fungi on Controlling Onion Bacterial Rots

Intrinsic Onion Resistance against Bacterial Bulb Rots by Chemical Inducers

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