alexa Plant Stress Tolerance: Engineering ABA: A Potent Phytohormone | OMICS International
ISSN: 2329-8936
Transcriptomics: Open Access
Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields.
Meet Inspiring Speakers and Experts at our 3000+ Global Conferenceseries Events with over 600+ Conferences, 1200+ Symposiums and 1200+ Workshops on
Medical, Pharma, Engineering, Science, Technology and Business

Plant Stress Tolerance: Engineering ABA: A Potent Phytohormone

Shabir H Wani1* and Vinay Kumar2
1Division of Genetics and Plant Breeding, SKUAST-K, Shalimar, Srinagar, Jammu and Kashmir, India
2Department of Biotechnology, Modern College, S. P. Pune University, Ganeshkhind, India
Corresponding Author : Shabir H Wani
Division of Genetics and Plant Breeding
SKUAST-K, Shalimar, Srinagar
190025, Jammu and Kashmir, India
Tel: 91-0194- 2461258
E-mail: [email protected]
Received October 06, 2015; Accepted October 17, 2015; Published October 20, 2015
Citation:Wani SH, Kumar V (2015) Plant Stress Tolerance: Engineering ABA: A Potent Phytohormone.Transcriptomics 3:113. doi:10.4172/2329-8936.1000113
Copyright: ©2015 Wani SH, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Related article at Pubmed, Scholar Google

Visit for more related articles at Transcriptomics: Open Access

Abstract

Abiotic stresses, primarily drought, salinity, heat, cold, flooding and ultra-violet rays are causing widespread crop losses worldwide. Because of the complexity of the stress-tolerance traits, conventional breeding techniques have met with little success in fulfilling the world fooddemands . Therefore, to face the abiotic stresses, novel and potent approaches should be devised and engineering of phytohormones could be a method of choice to increase the crop productivity

Opinion
Abiotic stresses, primarily drought, salinity, heat, cold, flooding and ultra-violet rays are causing widespread crop losses worldwide. Because of the complexity of the stress-tolerance traits, conventional breeding techniques have met with little success in fulfilling the world fooddemands [1-3]. Therefore, to face the abiotic stresses, novel and potent approaches should be devised and engineering of phytohormones could be a method of choice to increase the crop productivity. Recent research has shown that phytohormones including the classical well-known auxins, cytokinins, ethylene, gibberellins and newer members including brassinosteroids, jasmonates and strigolactones may prove to be potent targets for their engineering for producing abiotic stress tolerance crop plants. Considering phytohormones being key-regulators of plant growth and development as well as mediators of the environmental stress-responses [4], hormone metabolism and signaling process are the potential targets for manipulation to obtain enhanced abiotic stress tolerance. Amongst various phytohormones, Abscisic Acid (ABA) is perhaps the most sought-after hormone for engineering abiotic stress tolerance in crop plants owing to its identity as stress-hormone and vast array of functions it carry out under environmental stress conditions, particularly drought. It is credited as an essential messenger involved in stress adaptive response of plants and regulates the expression of stressresponsive genes involved in accumulation of compatible osmolytes, synthesis of Late Embryogenesis Abundant (LEA) proteins, dehydrins and other protective proteins beside antioxidant enzymes [5,6].
As a result, many of the key ABA biosynthetic pathway enzymes have been manipulated for conferring improved abiotic stress tolerance in resultant transgenics [7]. Transgenic Arabidopsis constitutively overexpressing the zeaxanthin epoxidase gene involved in ABA synthesis from isopentenyl pyrophosphate (IPP) and β-carotene exhibited enhanced drought and salinity tolerance [8]. Similarly, Park et al. [9] reported enhanced osmotic stress tolerance by overexpressing an ABA-responsive stress-related gene in Arabidopsis. C-Repeat Binding Factor (CBF) and/or dehydration-responsive element-binding (DREB) genes have been manipulated to confer improved drought tolerance. For example, overexpression of CBF1/DREB1B from Arabidopsis was able to improve tolerance to water-deficit stress in tomato [10]. Furthermore, when driven by three copies of an ABAresponsive complex (ABRC1) from barley HAV22 gene, the resultant transgenic tomato expressing CBF1 showed enhanced tolerance to chilling, water deficit, and salt stress, while maintaining the normal growth and yield under non-stressed conditions as compared to their control counterparts [10]. However, on some occasions, though over-expression of gene(s) involved in ABA biosynthesis/catabolism pathways resulted in increased drought tolerance, but with undesired growth penalties due to pleiotropic effects even with the use of inducible promoters [11]. To offset this, Zhang et al. [12] overexpressed CRK45, a stress-inducible kinase involved in ABA signaling, and the resultant transgenics showed enhanced drought tolerance but with a more tight control of ABA levels and signaling, indicating the role of CRK45 in fine-tuning of ABA levels. Recently, transgenic poplars were produced via overexpressing Arabidopsis YUCCA6 gene (a member of the YUCCA family of flavin monooxygenase-like proteins), which is involved in tryptophan-dependent IAA biosynthesis pathway and known to respond to environmental cues, under the control of stressinducible SWPA2 promoter [13]. The transgenic lines displayed auxin overproducing phenotypes and exhibited tolerance to drought stress, associated with reduced levels of reactive oxygen species. However, as biosynthetic pathways and convergence points for cross-talk are still not clear with great understandings, there is a further scope to increase our understandings in this regard and identify novel genes encoding phytohormone metabolisms to be targeted for engineering abiotic stress tolerance in crop plants. Nevertheless, the recent findings have opened various avenues in transgenic breeding via targeting ABA for conferring abiotic stress tolerance in important crop species.
References













 
Select your language of interest to view the total content in your interested language
Post your comment

Share This Article

Relevant Topics

Recommended Conferences

  • 10th International Conference on Proteomics and Bioinformatics
    May 16-17, 2018 Singapore City, Singapore
  • 4th International Conference on Transcriptomics
    May 17-18, 2018 Singapore City, Singapore
  • 5th International Conference on Glycobiology, Lipids & Proteomics
    August 27-28, 2018 Toronto, Canada
  • 4th International Conference on Genetic and Protein Engineering
    December 05-06, 2018 Chicago, USA

Article Usage

  • Total views: 8045
  • [From(publication date):
    December-2015 - Dec 12, 2017]
  • Breakdown by view type
  • HTML page views : 7934
  • PDF downloads : 111
 

Post your comment

captcha   Reload  Can't read the image? click here to refresh

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri & Aquaculture Journals

Dr. Krish

[email protected]

1-702-714-7001Extn: 9040

Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001Extn: 9040

Clinical Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

Food & Nutrition Journals

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

General Science

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics & Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Materials Science Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Nursing & Health Care Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

Ann Jose

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001Extn: 9042

 
© 2008- 2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version