First report of olive knot caused by Pseudomonas savastanoi pv. savastanoi on olives (Olea europaea) in Australia.
Pseudomonas savastanoi pv. savastanoi was identified as the cause of galling on olives (Olea europaea), cv. Barnea in South Australia in May 2003 from a property at Greenfields ∼10 km north of Adelaide. The bacterium was recovered from galls on 2-year-old olive trees (cv. Barnea) showing symptoms consistent with those attributed to olive knot. Following a targeted survey of cv. Barnea, further infections were located on 2 to 5-year-old trees in four other plantings in South Australia. This is the first record of olive knot in Australia.