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C. Hernández-Blanco, D. X. Feng, J. Hu, A. Sánchez-Vallet, L. Deslandes, F. Llorente, M. Berrocal-Lobo, H. Keller, X. Barlet, C. Sánchez-Rodríguez, L. K. Anderson, S. Somerville, Y. Marco and A. Molina, “Impairment of Cellulose Synthases Required for Arabidopsis Secondary Cell Wall Formation Enhances Disease Resistance,” The Plant Cell, Vol. 19, No. 3, 2007, pp. 890-903. doi:10.1105/tpc.106.048058

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• TITLE: Arabidopsis Transcription Factor WRKY33 Is Involved in Drought by Directly Regulating the Expression of CesA8

  AUTHORS: Xinjing Wang, Bojing Du, Meng Liu, Na Sun, Xiaoting Qi

  KEYWORDS: WRKY33; Drought; CesA8; Target Gene; Inverse Yeast One-Hybrid Assay

  JOURNAL NAME: American Journal of Plant Sciences, Vol.4 No.6A, June 19, 2013

  ABSTRACT: Arabidopsis (Arabidopsis thaliana) WRKY33 is a key transcription factor in pathogen-induced defense signaling, but its function in abiotic stresses remains largely unclear. In this study, we report on the use of a reverse-genetic approach, as well as a yeast (Saccharomyces cerevisiae) expression system, to determine the role of WRKY33 in drought. A T-DNA insertion deletion mutant of WRKY33 is more sensitive to dehydration. Through genome-wide screening the target genes of WRKY33 in yeast, we identified 23 candidate genes including a drought tolerance gene CesA8. Further results revealed that WRKY33 repressed CesA8 expression through binding to the W-box elements of CesA8 distal promoter region and probably interacting with the transcriptional activator of CesA8, MYB46. These findings revealed the primary molecular mechanism underlying the function of WRKY33 in response to drought