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Targeting of Metabolic Pathways for Genetic Engineering to Combat Abiotic Stress Tolerance in Crop Plants

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Approaches to Plant Stress and their Management

Abstract

Abiotic stress is a serious threat to sustainable agriculture. Plant adaptation to suboptimal environmental conditions is controlled by cascades of molecular networks involved in stress perception, signal transduction, activation of new biochemical pathways, and repression of others. Protective metabolic adaptations alter physiological homeostatic of the whole plant. Use of modern molecular biology tools for elucidating abiotic stress tolerance relies on expression of specific stress-related gene and gene encoding enzymes present in biosynthetic pathways of functional and structural metabolites. Paramount among the mechanisms are reactive oxygen species scavenging, maintenance of ion uptake and water balance, and accumulation of compatible solutes such as betaines, proline, and alcohol sugars. Instead of single gene manipulation approach, targeting the regulatory machinery involving transcription factors has emerged as new potent tool for developing stress-tolerant transgenic crops. Under this chapter we highlight recent advances to our knowledge that emphasize the development of transgenic crops with improved stress tolerance by targeting different genes of various metabolic pathways.

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  1. Department of Biochemistry, College of Basic Sciences and Humanities, G.B.P.U.A&T, Pantnagar, Uttarakhand, 263145, India

    Shivangi Chamoli & A. K. Verma

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  1. Shivangi Chamoli
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  2. A. K. Verma
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Correspondence to A. K. Verma .

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  1. Department of Science Faculty of Arts, Science & Commerce, Mody Institute of Technology & Science, Sikar, Rajasthan, India

    R.K. Gaur

  2. Division of Crop Improvement, Directorate of Wheat Research, Karnal, Haryana, India

    Pradeep Sharma

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Chamoli, S., Verma, A.K. (2014). Targeting of Metabolic Pathways for Genetic Engineering to Combat Abiotic Stress Tolerance in Crop Plants. In: Gaur, R., Sharma, P. (eds) Approaches to Plant Stress and their Management. Springer, New Delhi. https://doi.org/10.1007/978-81-322-1620-9_2

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