Different non-host resistance responses of two rice subspecies, japonica and indica, to Puccinia striiformis f. sp. tritici

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• 作者：Yuheng Yang (1)
  Jing Zhao (1)
  Huijun Xing (1)
  Junyi Wang (2)
  Kai Zhou (2)
  Gangming Zhan (1)
  Hongchang Zhang (3)
  Zhensheng Kang (1)
  
• 关键词：Hydrogen peroxide ; Non ; host resistance ; Japonica ; Indica ; Puccinia striiformis f. sp. tritici
• 刊名：Plant Cell Reports
• 出版年：2014
• 出版时间：March 2014
• 年：2014
• 卷：33
• 期：3
• 页码：423-433
• 全文大小：1,866 KB
• 作者单位：Yuheng Yang (1)
  Jing Zhao (1)
  Huijun Xing (1)
  Junyi Wang (2)
  Kai Zhou (2)
  Gangming Zhan (1)
  Hongchang Zhang (3)
  Zhensheng Kang (1)
  
  1. State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, People’s Republic of China
  2. Shaanxi Rice Research Institute, Hanzhong Agricultural Science Institute, Hanzhong, Shaanxi, People’s Republic of China
  3. State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi, People’s Republic of China
  
• ISSN：1432-203X

文摘

Key message Japonica and indica have different non-host resistance (NHR) abilities to Puccinia striiformis f. sp. tritici ( Pst ), and hydrogen peroxide (H 2 O 2 ) has a positive function in NHR to japonica against Pst. Abstract Non-host interactions between Puccinia striiformis f. sp. tritici (Pst) and two rice subspecies were characterized using 23 rice varieties, including 11 japonica and 12 indica. Results showed that the infected fungal structures were easily produced in the leaves of indica, whereas only several substomatal vesicles and primary infection hyphae were observed in the leaves of japonica. This result indicated that indica is less resistant or more susceptible to Pst than japonica. Hydrogen peroxide accumulated in the initial phase of japonica-em class="a-plus-plus">Pst interaction but not in indica-em class="a-plus-plus">Pst interaction. A set of reactive oxygen species (ROS)-related genes was also induced in response to Pst infection, suggesting that ROS activation is one of the major mechanisms of non-host resistance of rice to Pst.