Regulation of rice responses to submergence by WRKY transcription factors

• DOI: 10.1007/s10535-018-0806-3
• Publication Date: 2018-04-24T08:37:15Z
• Authors: V. E. Viana; N. Marini; C. Busanello; C. Pegoraro; J. A. Fernando; L. C. Da Maia; A. Costa de Oliveira
• Keywords: WRKY protein domain; Aerenchyma; Transcription

Responses of rice to submergence have been extensively studied, but the molecular network behind tolerance this stress is still incomplete. Transcription factors (TFs) are important players in gene transcription regulation during stresses. Here, we analyzed expression WRKY genes and morphological anatomical changes different cultivars under submergence. When they were submerged for 48 h, root number, fresh dry masses, aerenchyma development observed. Although accumulations transcripts observed both shoots roots, tissues showed higher accumulation with a peak already after 6 h Especially transcriptions OsWRKY11 OsWRKY56 high, more than 100-fold comparison controls. The promoter analysis that some cis-regulatory elements could be characterized as stress-responsive linked oxygen depletion. In OsWRKY62, two found: ARE GC-motif. These known involved deficiency responses. addition, W-box element, target factors, was found OsWRKY11, OsWRKY56, suggesting feedback control acting on upregulation factors. Genes resulting had their regions, which also suggested by WRKYs. Overall, results support role unveil action other mechanisms.