Structural, Functional, and Evolutionary Characterization of Major Drought Transcription Factors Families in Maize

Drought is one of the major threats to the maize yield especially in subtropical production systems. Understanding the genes and regulatory mechanisms of drought tolerance is important to sustain the yield. Transcription factors (TFs) play a major role in gene regulation under drought stress. In the...

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Bibliographic Details
Published in:	Frontiers in chemistry Vol. 6; p. 177
Main Authors:	Mittal, Shikha, Banduni, Pooja, Mallikarjuna, Mallana G, Rao, Atmakuri R, Jain, Prashant A, Dash, Prasanta K, Thirunavukkarasu, Nepolean
Format:	Journal Article
Language:	English
Published:	Switzerland Frontiers Media S.A 23-05-2018
Subjects:	Chemistry drought gene expression gene interaction maize transcription factors gene interaction drought transcription factors maize gene expression
Online Access:	Get full text
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Summary:	Drought is one of the major threats to the maize yield especially in subtropical production systems. Understanding the genes and regulatory mechanisms of drought tolerance is important to sustain the yield. Transcription factors (TFs) play a major role in gene regulation under drought stress. In the present study, a set of 15 major TF families comprising 1,436 genes was structurally and functionally characterized. The functional annotation indicated that the genes were involved in ABA signaling, ROS scavenging, photosynthesis, stomatal regulation, and sucrose metabolism. Duplication was identified as the primary force in divergence and expansion of TF families. Phylogenetic relationship was developed for individual TF and combined TF families. Phylogenetic analysis clustered the genes into specific and mixed groups. Gene structure analysis revealed that more number of genes were intron-rich as compared to intron-less. Drought-responsive -regulatory elements such as ABREA, ABREB, DRE1, and DRECRTCOREAT have been identified. Expression and interaction analyses identified leaf-specific bZIP TF, , as a potential contributor toward drought tolerance in maize. Protein-protein interaction network of 269 drought-responsive genes belonging to different TFs has been provided. The information generated on structural and functional characteristics, expression, and interaction of the drought-related TF families will be useful to decipher the drought tolerance mechanisms and to breed drought-tolerant genotypes in maize.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Edited by: Raju Datla, National Research Council Canada (NRC-CNRC), Canada This article was submitted to Agricultural Biological Chemistry, a section of the journal Frontiers in Chemistry Reviewed by: Manosh Kumar Biswas, University of Leicester, United Kingdom; Sateesh Kagale, National Research Council Canada (NRC-CNRC), Canada
ISSN:	2296-2646 2296-2646
DOI:	10.3389/fchem.2018.00177