| Autor: |
Jun He, Yuqiang Liu, Dingyang Yuan, Meijuan Duan, Yanling Liu, Zijie Shen, Chunyan Yang, Zeyu Qiu, Daoming Liu, Peizheng Wen, Jie Huang, Dejia Fan, Shizhuo Xiao, Yeyun Xin, Xianian Chen, Ling Jiang, Haiyang Wang, Longping Yuan, Jianmin Wan |
| Předmět: |
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| Zdroj: |
Proceedings of the National Academy of Sciences of the United States of America; 1/7/2020, Vol. 117 Issue 1, p271-277, 7p |
| Abstrakt: |
Brown planthopper (BPH) is one of the most destructive insects affecting rice (Oryza sativa L.) production. Phenylalanine ammonialyase (PAL) is a key enzyme involved in plant defense against pathogens, but the role of PAL in insect resistance is still poorly understood. Here we show that expression of the majority of PALs in rice is significantly induced by BPH feeding. Knockdown of OsPALs significantly reduces BPH resistance, whereas overexpression of OsPAL8 in a susceptible rice cultivar significantly enhances its BPH resistance. We found that OsPALs mediate resistance to BPH by regulating the biosynthesis and accumulation of salicylic acid and lignin. Furthermore, we show that expression of OsPAL6 and OsPAL8 in response to BPH attack is directly up-regulated by OsMYB30, an R2R3 MYB transcription factor. Taken together, our results demonstrate that the phenylpropanoid pathway plays an important role in BPH resistance response, and provide valuable targets for genetic improvement of BPH resistance in rice. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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