Abstract
The expression patterns of eight defenserelated genes in the herbivore-infested and jasmonatetreated (jasmonic acid, JA and its derivative MeJA) rice leaves were analyzed using RT-PCR. The results showed thatSpodoptera litura Fabricius (Lepidoptera: Noctuidae) herbivory induced the expression of lipoxygenase (LOX) and allene oxide synthase (AOS) genes that are involved in the jasmonate-signaling pathway. Moreover,S. litura damage resulted in the expression of farnesyl pyrophosphate synthase (FPS), Bowman-birk proteinase inhibitor (BBPI), phenylalanine ammonia-lyase (PAL) and other rice defenserelated genes that were also induced by aqueous JA treatment or gaseous MeJA treatment. These indicated that in rice leaves, the JA-related signaling pathway was involved in theS. litura-induced chemical defense. Mechanical damage and brown planthopper (BPH),Nilaparvata lugens (Stål) (Homoptera: Delphacidae) damage induced the expression ofLOX gene, but both treatments did not induce the expression ofAOS gene. However, BPH damage induced the expression of acidic pathogen-related protein 1 (PR1a), Chitinase (PR-3), andPAL genes, which is involved in the salicylatesignaling pathway. It was suggested that salicylate-related signaling pathway or other pathways, rather than jasmonate-signaling pathway was involved in the BPH-induced rice plant defense.
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Xu, T., Zhou, Q., Chen, W. et al. Involvement of Jasmonate-signaling pathway in the herbivore-induced rice plant defense. Chin. Sci. Bull. 48, 1982–1987 (2003). https://doi.org/10.1007/BF03183991
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DOI: https://doi.org/10.1007/BF03183991