The role of silicon in enhancing resistance to bacterial blight of hydroponic- and soil-cultured rice

• DOI: 10.1038/srep24640
• Publication Date: 2016-04-19T09:11:27Z
• Authors: Alin Song; Gaofeng Xue; Peiyuan Cui; Fenliang Fan; Hongfang Liu; Chang Yin; Wanchun Sun; Yongchao Liang
• Keywords: Phenylalanine ammonia-lyase; Rice plant; Sheath blight

Abstract Here we report for the first time that bacterial blight of rice can be alleviated by silicon (Si) added. In both inoculated and uninoculated plants, shoot dry weight was significantly higher in +Si plants than −Si plants. A soil-cultured trial showed disease severity 24.3% lower Si-amended non-Si-amended Plants were switched from to nutrient solution simultaneously with Xoo also exhibited same high resistance as treated continuously Si, control efficiencies 52.8 62.9%, respectively. Moreover, total concentrations soluble phenolics lignin leaves Polyphenoloxidase (PPO) phenylalanine ammonia-lyase (PAL) activities observed The expression levels Os03g0109600, Prla , Rcht2 Lox2osPil post-inoculation during experimental time. Addition Si resulted increased Pal transcription, inhibited CatA Os03g0126000 earlier later stages inoculation,