First Report on Pseudomonas marginalis Bacterium Causing Soft Rot of Onion in Morocco | Zendy

El Hassan Achbani | Zendy; S. Sadik | Zendy; Rahal El Kahkahi | Zendy; Abdellatif Benbouazza | Zendy; H. Mazouz | Zendy

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First Report on Pseudomonas marginalis Bacterium Causing Soft Rot of Onion in Morocco

Author(s) -

El Hassan Achbani,

S. Sadik,

Rahal El Kahkahi,

Abdellatif Benbouazza,

H. Mazouz

Publication year - 2014

Publication title -

atlas journal of biology

Language(s) - English

Resource type - Journals

ISSN - 2158-9151

DOI - 10.5147/ajb.2014.0136

Subject(s) - pantoea agglomerans , klebsiella oxytoca , pseudomonas fluorescens , pantoea , biology , pseudomonas , postharvest , inoculation , microbiology and biotechnology , klebsiella , bulb , bacteria , horticulture , botany , enterobacteriaceae , genetics , biochemistry , escherichia coli , gene

Pseudomonas marginalis is an important postharvest pathogen causing soft rot in a wide variety of harvested fruits and vegetables. Isolated strains from rotten onion bulbs based on morphological characteristics, were tested for pathogenecity on tobacco. Pathogenic strains underwent a biochemical test which detected the presence of P. marginalis. Symptoms were reproduced by inoculating this species to onion leaves and bulbs. Based on ARN16S sequencing, reported associated species (Pantoea agglomerans, Pseudomonas fluorescens , Klebsiella oxytoca) were also confirmed. This study reports for the first time the presence of P. marginalis bacterium in Morocco causing the soft rot of onion bulb, in association with Pantoea agglomerans, Pseudomonas fluorescens , and Klebsiella oxytoca.

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