Induced resistance against Fusarium diseases of <Emphasis Type="Italic">Cymbidium</Emphasis> species by weakly virulent strain HPF-1 (<Emphasis Type="Italic">Fusarium</Emphasis> sp.) |
| |
Authors: | Email author" target="_blank">Kazunori?IchikawaEmail author Shigeki?Kawasaki Chihiro?Tanaka Mitsuya?Tsuda |
| |
Institution: | (1) Yamanashi Agricultural Research Center, Futaba-cho, Kitakoma-gun, Yamanashi, 407-0105, Japan;(2) Graduate School of Agriculture, Kyoto University, Kyoto, Japan |
| |
Abstract: | The mechanism by which Fusarium diseases of cymbidium plants are suppressed by a weakly virulent strain HPF-1 of Fusarium sp. was studied. Strain HPF-1 produced microscopic, necrotic local lesions on cymbidium leaves, causing minor damage to palisade tissues at the infection sites. This weakly virulent strain remained near the site of infection and did not develop further. It systemically and nonselectively suppressed some diseases of cymbidium such as yellow spot of leaves caused by Fusarium proliferatum and F. fractiflexum, bulb and root rot caused by F. oxysporum, and dry rot of bulbs and roots caused by F. solani. Because endogenous salicylic acid levels increased in cymbidium leaves inoculated with strain HPF-1, the mechanism of disease suppression is thought to be systemic acquired resistance. |
| |
Keywords: | Systemic acquired resistance Induced resistance Fusarium Weakly virulent Antagonist Cymbidium |
本文献已被 SpringerLink 等数据库收录! |
|