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- Title
Natural increase of pectobacterium soft-rot disease by Pseudomonas Azotoformans, a carrot endophytic bacterium.
- Authors
Ansari, F.; Khakvar, R.; Mokarram, R.
- Abstract
Carrot is one of the main agricultural crops in northwest Iran. In recent years, the bacterial soft-rot disease has gradually become a big issue for carrot production in this region. The current study was conducted to find the main causal agent of this disease. Suspected soft-rot tuber samples were collected from the infected farms and warehouses. After bacteria isolation and purification, the isolates were examined by biochemical and molecular assays. In total, over 50 bacterial isolates with soft-rot capability were isolated and stored. The results confirmed that Pectobacterium carotovorum subsp. carotovorum is the main and prevalent causative agent for this disease in the area. But all severe P. carotovorum infections were associated with infection with a Pseudomonas azotoformans strain with low pectolytic capability. In the in vitro assay, severe soft-rot symptoms could be seen in the synchronous inoculation with both P. carotovorum and Pseudomonas strains while single inoculation with P. carotovorum strains had moderate disease severity. It seems that this recent rising softrot epidemy in the region is the result of an association or mix-infection between P. carotovorum and P. azotoformans.
- Subjects
IRAN; ENDOPHYTIC bacteria; PSEUDOMONAS diseases; CARROTS; ERWINIA; CROPS; BACTERIAL diseases
- Publication
Journal of Agricultural & Marine Sciences (JAMS), 2023, Vol 28, Issue 2, p81
- ISSN
2410-1060
- Publication type
Article