Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2836630 | Physiological and Molecular Plant Pathology | 2008 | 11 Pages |
Abstract
A necrotrophic pathogen, the tomato pathotype of Alternaria alternata (Aa) causes Alternaria stem canker on tomato. Its pathogenicity depends on the production of host-specific AAL-toxin. Pre-inoculation with nonpathogenic Aa or pretreatment an elicitor prepared from Aa reduced disease symptoms by the pathogen. Salicylic acid (SA)- and jasmonic acid (JA)-dependent defense responses in tomato are not involved in the resistance to the pathogen induced by nonpathogenic Aa. The results suggest that an alternative and unknown signaling pathway independent of SA- and JA-signaling might modulate the induced resistance by activating the expression of the multiple defense genes.
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Authors
Mayumi Egusa, Hajime Akamatsu, Takashi Tsuge, Hiroshi Otani, Motoichiro Kodama,