The elicitor-responsive gene for a GRAS family protein, CIGR2, suppresses cell death in rice inoculated with rice blast fungus via activation of a heat shock transcription factor, OsHsf23. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Tanabe, Shigeru; Onodera, Haruko; Hara, Naho; Ishii-Minami, Naoko; Day, Brad; Fujisawa, Yukiko; Hagio, Takashi; Toki, Seiichi; Shibuya, Naoto; Nishizawa, Yoko; Minami, Eiichi
• Is Part Of: Bioscience, biotechnology, and biochemistry. Volume 80:Issue 1(2016)
• Page Start: 145
• Page End: 151
• Publication Date: 2016-01-02
• Subjects: GRAS family -- heat shock transcription factor -- cytoplasmic granulation -- rice; Biotechnology -- Periodicals; Biochemistry -- Periodicals; 660.6
• DOI: 10.1080/09168451.2015.1075866
• Languages: English
• ISSNs: 0916-8451

Abstract

Abstract: We show that a rice GRAS family protein, CIGR2, is a bonafide transcriptional activator, and through this function, targets the B-type heat shock protein-encoding gene OsHsf23 (Os09g0456800). CIGR2 (Os07g0583600) is an N -acetylchitooligosaccharide elicitor-responsive gene whose activity, through the direct transcriptional control of OsHsf23, is required for mediating hypersensitive cell death activation during pathogen infection. RNAi lines of CIGR2 and OsHsf23 similarly exhibited the higher level of granulation in the epidermal cells of leaf sheath inoculated with an avirulent isolate of rice blast fungus. Interestingly, we did not observe altered levels of resistance, suggesting that CIGR2 suppresses excessive cell death in the incompatible interaction with blast fungus via activation of OsHsf23 . Graphical abstract: : N -Acetylchitooligosaccharides-responsive CIGR2 suppresses cell death of rice in cooperation with OsHsf23 .