Overexpression of OsHSP18.0-CI Enhances Resistance to Bacterial Leaf Streak in Rice

Rice

Xiangkui Li¹  Ruihua Zhang¹  Guixiu Jin¹  Liping Zuo²  Hongjuan Tian²  Xinhua Ding²  Qian Xu²  Zhaohui Chu²  Yanhu Ju² 

[1] Rice Research Institute, Linyi Academy of Agricultural Science;State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory of Agricultural Microbiology, Shandong Agricultural University;

关键词: Bacterial leaf streak;    Disease resistance;    Heat shock protein;    OsHsp18.0-CI;    Xanthomonas oryzae pv. oryzicola;   

DOI  :  10.1186/s12284-017-0153-6

来源: DOAJ

【 摘 要 】

Abstract Background The small heat shock proteins represent a large family of proteins that respond to a wide range of abiotic and biotic stresses. OsHsp18.0-CI confers tolerance to salt and cadmium and interacts with viral RNA-dependent RNA polymerase (RdRp). However, the direct function of OsHsp18.0-CI in resistance against biotic stresses remains unclear in rice. Results Here, we report that the expression of OsHsp18.0-CI was up-regulated upon inoculation with RS105, a strain of Xanthomonas oryzae pv. oryzicola (Xoc) that causes bacterial leaf streak in rice. In comparison with wild-type, OsHsp18.0-CI overexpression (OE) lines exhibited enhanced resistance to RS105, whereas repression lines exhibited compromised resistance to RS105. In addition, the transcriptional profiles of wild type and OE lines were compared with and without inoculation with RS105. After inoculation with RS105, most of the genes with up-regulated expression were commonly stimulated in the wild type and OE lines, with stronger induction in the OE lines than in wild type. Conclusion Our study reveals that OsHsp18.0-CI positively regulates resistance to Xoc by mediating an enhanced version of the basal defense response in rice.

【 授权许可】

Unknown