Xanthomonas campestris pv. poae as the causal agent of wilt symptoms on annual bluegrass in Japan
1995
Nishino, T. (Japan Tobacco Inc., Tokyo) | Imaizumi, S. | Miyabe, K. | Yamada, M. | Goto, M.
Annual bluegrass (Poa annua L.) samples were collected from several areas of Japan from 1991 to 1993. Eighty-nine isolates of Xanthomonas-like bacteria which caused wilting of annual bluegrass leaves upon artificial inoculation were isolated. Isolates were separated into two groups according to the pathogenicity demonstrated by leaf clipping inoculation. Ten isolates including JT-P482 as the representative isolate caused severe wilting of the whole plant, and 79 isolates including JT-P192 as the representative isolate caused mild wilt symptoms and/or pale-yellow discoloration limited to leaf blades. Pathogenicity and bacteriological properties of present isolates were compared with those of Xanthomonas campestris pv. graminis, x. c. pv. phlei, K. c. pv. arrhenatheri, X. c. pv. poae and X. c. pv. "poannua". Regardless of differences in their pathogenicity, present isolates of both types were identified as X. c. pv. poae on the basis of host-specificity and bacteriological properties
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