Plant Protect. Sci., 2013, 49(10):S33-S40 | DOI: 10.17221/24/2013-PPS

Natural woody plant, Mallotus japonicus, as an ecological partner to transfer different pathotypic conidia of Oidium neolycopersici to greenhouse tomatoesOriginal Paper

Teruo Nonomura1, Yoshinori Matsuda1, Shun Yamashita1, Haruhiko Akahoshi1, Yoshihiro Takikawa2, Koji Kakutani3, Hideyoshi Toyoda1
1 Laboratory of Phytoprotection, Science and Technology, Faculty of Agriculture, Kinki University, Nara, Japan
2 Plant Center, Institute of Advanced Technology, Kinki University, Wakayama, Japan
3 Pharmaceutical Research and Technology Institute, Kinki University, Osaka, Japan

In our routine surveys for the powdery mildew disease in greenhouse tomatoes, we detected a new pathogen that forms pseudochains consisting of 12 conidia. To identify the original plant that dispersed this pathogen, wild plants infected with powdery mildew were monitored. The pathogen on Japanese mallotus, Mallotus japonicus, produced a similar type of pseudochain, and conidia were infectious to tomatoes. Inversely, the conidia on the tomato leaves infected M. japonicus. Infectivity assays and internal transcribed spacer (ITS)-based phylogenetic analyses indicated that the two pathogens on the tomato and M. japonicus were identical. These results suggest that the conidia on M. japonicus can be transmitted to greenhouse tomatoes. This work documents the ecological transmission of conidia between wild plants and greenhouse tomatoes

Keywords: tomato powdery mildew; Japanese mallotus; conidial pseudochain; wild tomato species; Oidium neolycopersici teleomorph

Published: December 31, 2013  Show citation

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Nonomura T, Matsuda Y, Yamashita S, Akahoshi H, Takikawa Y, Kakutani K, Toyoda H. Natural woody plant, Mallotus japonicus, as an ecological partner to transfer different pathotypic conidia of Oidium neolycopersici to greenhouse tomatoes. Plant Protect. Sci. 2013;49(Special Issue):S33-40. doi: 10.17221/24/2013-PPS.
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