First report of bacterial black spot on calanthe (Calanthe spp.) caused by Burkholderia andropogonis in Japan

• DOI: 10.1007/s10327-016-0658-7
• Publication Date: 2016-05-18T02:10:28Z
• Authors: Tatsuya Tomomitsu; Yugo Kitazawa; Osamu Netsu; Takamichi Nijo; Hiroaki Koinuma; Nozomu Iwabuchi; Yukari Okano; Hisae Hirata; Kensaku Maejima; Yasuyuki Yamaji; Shigetou Namba
• Keywords: Black spot; Spots

In July 2013, black spots were observed on leaves of calanthe in a flowerbed of a park in Tokyo, Japan. The spots were circular to oval and often accompanied by a yellow halo. A bacterium was isolated from the lesions and was found to cause the same symptoms on calanthe leaves after inoculation. Based on phylogenetic and bacteriological analyses, the causal bacterium was identified as Burkholderia andropogonis. This is the first report of bacterial black spot on calanthe caused by B. andropogonis in Japan.