Phytopathologia Mediterranea (2006) 45, 247-252

Alessio Cimmino, Anna Andolfi, Guido Marchi, Giuseppe Surico and Antonio Evidente (2006)
Phytohormone production by strains of Pantoea agglomerans from knots on olive plants caused by Pseudomonas savastanoi pv. savastanoi
Phytopathologia Mediterranea 45 (3), 247-252
Abstract: Pantoea agglomerans is a common epiphyte of many plant species, and it is associated with Pseudomonas savastanoi pv. savastanoi in young and apparently intact olive knots. Strains of P. agglomerans collected from various olive groves in central Italy were studied for their ability to accumulate plant growth substances in culture. All the strains produced indole-3-aldehyde, indole-3-ethanol and indole-3-acetic acid (IAA), this last compound in amounts (average 8.7 mg l-1) comparable to those produced in vitro by virulent strains of P. savastanoi. None of the olive strains produced cytokinins. It is suggested that the IAA produced by P. agglomerans may increase the size of the knots caused on olive by P. savastanoi.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Guido Marchi

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Pantoea agglomerans	Olive (Olea europaea)	Italy
	Pseudomonas savastanoi	Olive (Olea europaea)	Italy