稻黄单胞菌
茉莉酸
单萜
萜烯
生物
水稻黄单胞菌。稻瘟
抗菌活性
茉莉酸
灰葡萄孢菌
微生物学
植物
病菌
生物化学
细菌
水杨酸
遗传学
拟南芥
突变体
基因
作者
Kayo Yoshitomi,Shiduku Taniguchi,Keiichiro Tanaka,Yuya Uji,Kazuya Akimitsu,Kenji Gomi
标识
DOI:10.1016/j.jplph.2015.12.008
摘要
Rice is one of the most important crops worldwide and is widely used as a model plant for molecular studies of monocotyledonous species. The plant hormone jasmonic acid (JA) is involved in rice-pathogen interactions. In addition, volatile compounds, including terpenes, whose production is induced by JA, are known to be involved in the rice defense system. In this study, we analyzed the JA-induced terpene synthase OsTPS24 in rice. We found that OsTPS24 was localized in chloroplasts and produced a monoterpene, γ-terpinene. The amount of γ-terpinene increased after JA treatment. γ-Terpinene had significant antibacterial activity against Xanthomonas oryzae pv. oryzae (Xoo); however, it did not show significant antifungal activity against Magnaporthe oryzae. The antibacterial activity of the γ-terpinene against Xoo was caused by damage to bacterial cell membranes. These results suggest that γ-terpinene plays an important role in JA-induced resistance against Xoo, and that it functions as an antibacterial compound in rice.
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