title: Different non-host resistance responses of two rice subspecies, japonica and indica, to Puccinia striiformis f. sp. tritici.
abstract: CONCLUSIONS
  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.
  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-Pst interaction but not in indica-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.
authors.affiliation: 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.
authors.forename: Yuheng
authors.initials: Y
authors.lastname: Yang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.forename: Huijun
authors.initials: H
authors.lastname: Xing
authors.forename: Junyi
authors.initials: J
authors.lastname: Wang
authors.forename: Kai
authors.initials: K
authors.lastname: Zhou
authors.forename: Gangming
authors.initials: G
authors.lastname: Zhan
authors.forename: Hongchang
authors.initials: H
authors.lastname: Zhang
authors.forename: Zhensheng
authors.initials: Z
authors.lastname: Kang
mesh_terms: D001487:Basidiomycota / Q000472:pathogenicity*; D018506:Gene Expression Regulation, Plant; D006861:Hydrogen Peroxide / Q000378:metabolism; D012275:Oryza / Q000378:metabolism / Q000382:microbiology*
chemical_list: D006861:Hydrogen Peroxide