19. Helicases in Improving Abiotic Stress Tolerance in Crop Plants

  1. Dr. Narendra Tuteja1,2,
  2. Dr. Sarvajeet Singh Gill1,3,
  3. Prof. Antonio F. Tiburcio4 and
  4. Dr. Renu Tuteja1
  1. Narendra Tuteja1,2,
  2. Sarvajeet Singh2 and
  3. Renu Tuteja1

Published Online: 30 MAR 2012

DOI: 10.1002/9783527632930.ch19

Improving Crop Resistance to Abiotic Stress, Volume 1 & Volume 2

Improving Crop Resistance to Abiotic Stress, Volume 1 & Volume 2

How to Cite

Tuteja, N., Singh, S. and Tuteja, R. (2012) Helicases in Improving Abiotic Stress Tolerance in Crop Plants, in Improving Crop Resistance to Abiotic Stress, Volume 1 & Volume 2 (eds N. Tuteja, S. S. Gill, A. F. Tiburcio and R. Tuteja), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany. doi: 10.1002/9783527632930.ch19

Editor Information

  1. 1

    International Centre for Genetic Engineering and Biotechnology Plant Molecular Biology Group, Aruna Asaf Ali Marg, New Delhi 110 067, India

  2. 2

    MD University, Centre for Biotechnology, Rohtak 124 001, Haryana, India

  3. 3

    Aligarh Muslim University, Department of Botany, Aligarh 202 002, Uttar Pradesh, India

  4. 4

    Universitat de Barcelona, Unitat de Fisiologia Vegetal, Facultat de Farmàcia, Av. Joan XXIII, S/N, 08028 Barcelona, Spain

Author Information

  1. 1

    International Centre for Genetic Engineering and Biotechnology Plant Molecular Biology Group, Aruna Asaf Ali Marg, New Delhi 110 067, India

  2. 2

    MD University, Centre for Biotechnology, Rohtak 124 001, Haryana, India

Publication History

  1. Published Online: 30 MAR 2012
  2. Published Print: 14 MAR 2012

ISBN Information

Print ISBN: 9783527328406

Online ISBN: 9783527632930

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Keywords:

  • ABA;
  • abiotic stress;
  • biotic stress;
  • DEAD/H-box protein;
  • DNA helicase;
  • RNA helicase;
  • stress tolerance

Summary

Abiotic stress conditions adversely affect plant growth and limit agricultural production worldwide. Minimizing these losses is a major area of concern for all countries. Salinity, drought, and cold are among the major environmental stresses that greatly influence the growth, development, survival, and yield of plants. Several genes including the genes for helicases are known to express under the influence of various abiotic stresses. The helicases are ubiquitous enzymes that catalyze the unwinding of energetically stable duplex DNA (DNA helicases) or duplex RNA secondary structures (RNA helicases). Most helicases are members of DEAD-box protein superfamily that play essential roles in basic cellular processes regulating plant growth and development, such as DNA replication, repair, recombination, transcription, ribosome biogenesis, and translation initiation. It seems, therefore, that DEAD-box helicase might also be playing an important role in stabilizing growth in plants under stress conditions by regulating some stress-induced pathways. There are now few reports on the upregulation of DEAD-box helicases in response to abiotic stresses. The exact mechanism of helicase-mediated tolerance of stress has not yet been understood. There could be two possible sites of action for the helicases: (i) at the level of transcription or translation to enhance or stabilize protein synthesis or (ii) in an association with DNA multisubunit protein complexes to alter gene expression. Here, we have described all the known plant helicases, which play a role in stress responses. The exploitation of abiotic stress-responsive helicase genes of new pathways of RNA and DNA unwinding will be helpful for engineering stress-tolerant crop plants.