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

Teruo Nonomura, Yoshinori Matsuda, Shun Yamashita, Haruhiko Akahoshi, Yoshihiro Takikawa, Koji Kakutani and Hideyoshi Toyoda
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Teruo Nonomura: Laboratory of Phytoprotection, Science and Technology, Faculty of Agriculture, Kinki University, Nara, Japan
Yoshinori Matsuda: Laboratory of Phytoprotection, Science and Technology, Faculty of Agriculture, Kinki University, Nara, Japan
Shun Yamashita: Laboratory of Phytoprotection, Science and Technology, Faculty of Agriculture, Kinki University, Nara, Japan
Haruhiko Akahoshi: Laboratory of Phytoprotection, Science and Technology, Faculty of Agriculture, Kinki University, Nara, Japan
Yoshihiro Takikawa: Plant Center, Institute of Advanced Technology, Kinki University, Wakayama, Japan
Koji Kakutani: Pharmaceutical Research and Technology Institute, Kinki University, Osaka, Japan
Hideyoshi Toyoda: Laboratory of Phytoprotection, Science and Technology, Faculty of Agriculture, Kinki University, Nara, Japan

Plant Protection Science, 2013, vol. 49, issue SpecialIssue, S33-S40

Abstract: 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 (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:49:y:2013:i:specialissue:id:24-2013-pps

DOI: 10.17221/24/2013-PPS

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