• Evolutionary analysis of GRAS gene family for functional and structural insights into hexaploid bread wheat (Triticum aestivum)

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    • Keywords


      Bread wheat; GRAS; stress; transcription factor

    • Abstract


      GRAS proteins are multi-functional, regulating various aspects of plant growth and development. Besides,they are also involved in the stress tolerance of plants. Wheat is one of the major cereal crops of theworld and efforts are being made to boost its productivity and stress tolerance to feed the increasing worldpopulation. Being a physiologically important transcription factor, GRAS genes can open up new avenuesfor improvement in wheat. The recent availability of the hexaploid genome sequence of bread wheat(Triticum aestivum) provides us an excellent opportunity to analyse the GRAS gene family and gainfunctional insights. In this study, we identified 183 GRAS genes coding for 194 GRAS proteins.Chromosomal location was identified for all the genes to give some idea about gene duplications.Sequence alignment, followed by phylogenetic analysis helped to classify the TaGRAS genes in 12 subfamilies.Gene and protein structure analysis revealed conservation among the different sub-families.Transcriptome analysis was done using available databases, to reveal the expression pattern underdevelopmental conditions as well as different stress conditions. Altogether, these datasets give importantinsights into the functional role of different GRAS family members of bread wheat. Besides, it provides animportant resource for future investigations into the physiological role of GRAS genes in bread wheat.Finally, this study identified potentially important TaGRAS genes which may help to boost yields andstress tolerance of wheat via control of various physiological aspects.

    • Author Affiliations



      1. Plant Stress Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110 067, India
      2. Birla Institute of Scientific Research, Jaipur, India
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