First report of Verticillium wilt, caused by Verticillium dahliae, on Phlox paniculata in Italy.
During summer 2013, several plants of Phlox paniculata, growing in gardens located in the Biella province (Northern Italy) showed symptoms of vascular wilt. Symptoms were yellowing of the leaves and brown streaks in the vascular tissue. Eventually, plants wilted and died. Based on morphological characteristics, sequence analysis of the rDNA internal transcribed spacer region and pathogenicity tests, the causal agent was identified as V. dahliae. V. dahliae on P. paniculata was reported in USA and Canada. This is thought to be the first report of V. dahliae on P. paniculata in Italy.