Function of the NAC transcription factor family genes in the regulation of biotic stresses responses in plants
By: A.M. Sharoni, M. Nuruzzaman, M.M. Rahman, A.K.M.R. Islam, M.M. Hossain, M.F. Alam, MA Rahman, A. Imtiaj, S. Kikuchi
Key Words: Phylogenetic analysis, motif, NAC transcription factor, defense signaling pathways, biotic infections
J. Bio. Env. Sci. 10(2), 141-153, February 2017.
NAC transcription factor is one of the largest families of transcriptional regulators in plants, and members of the NAC gene family have been suggested to play important roles in the regulation of the transcriptional reprogramming associated with plant stress responses. A phylogenetic analysis of NAC genes, with a focus on rice and Arabidopsis, was performed. Herein, we present an overview of the regulation of the stress responsive NAC SNAC/(IX) group of genes that are implicated in the resistance to different stresses. SNAC factors have important roles for the control of biotic stress tolerance and overexpression can improve stress tolerance via biotechnological approaches. We also review the recent progress in elucidating the roles of NAC transcription factor in plant biotic stress. Modification of the expression pattern of transcription factor genes and/or changes in their activity contribute to the elaboration of various signaling pathways and regulatory networks. Though, a single NAC gene often responds to several stress factors, and their protein products may participate in the regulation of several seemingly disparate processes as negative or positive regulators. Additionally, the NAC proteins function via auto-regulation or cross-regulation is extensively found among NAC genes. These observations assist in the understanding of the complex mechanisms of signaling and transcriptional reprogramming controlled by NAC proteins.
Function of the NAC transcription factor family genes in the regulation of biotic stresses responses in plants
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