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Published in:

Volume 5 Issue 8
August-2018
eISSN: 2349-5162

Unique Identifier

JETIRA006186

Page Number

1065-1072

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Title

WHEAT PERFORMS IN HEAT STRESS CONDITION: A REVIEW

ISSN

2349-5162

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"WHEAT PERFORMS IN HEAT STRESS CONDITION: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.1065-1072, August-2018, Available :http://www.jetir.org/papers/JETIRA006186.pdf

Abstract

Wheat (Triticum aestivum L.) is the most widely grown in the world. It has long been known that average wheat yield reduces by 4% for every one degree rise in ambient temperature during grain filling. High temperature drastically reduces both yield and quality of wheat. Heat stress is one of the major abiotic factor limiting production and productivity of Wheat in several regions round the world. In spite of variation in susceptibility of different stages to heat stress, almost all stages of plant life are affected by heat stress. High temperatures cause an array of morpho-anatomical, physiological and biochemical changes in plants, which affect wheat plant growth and development and may lead to a drastic reduction in economic yield. Plants have evolved various mechanisms for flourishing under higher prevailing temperatures. They include short term avoidance/acclimation mechanism or long term evolutionary adaptations. Some major tolerance mechanisms, including ion transporters, Late Embryogenesis Abundant (LEA) proteins, osmo-protectants, antioxidant defence and factors involved in signalling cascades and transcriptional control are essentially significant to counteract the stress effects. Increasing temperature there observed that Catalase (CAT), Ascorbate Peroxidase (APX) and Superoxide Dismutase (SOD) showed an initial increase before declining at 50°C, while Peroxidase (POX) and Glutathione Reductase (GR) activities declined at all temperatures.The activity of the enzymes Glutathione S-Transferase (GST), Ascorbate Peroxidase (APX) and Catalase (CAT) was more enhanced in the cultivar showed better tolerance to heat stress and projection against Reactive Oxygen Species (ROS) production. Different environmental stresses, including high temperature, result in increased levels of (Abscisic Acid) ABA in wheat. In heat stress condition there finds Heat Shock Proteins (HSPs) in wheat plant. The HSPs are extremely heterogeneous in nature and this dynamic protein family is expanding continuously as per the recent researches are going on. The expression of HSPs is restricted to certain developmental stages of plant like seed germination, embryogenesis, micro sporogenesis and fruit maturation.

Key Words

Late Embryogenesis Abundant (LEA), Catalase (CAT), Ascorbate Peroxidase (APX), Superoxide Dismutase (SOD), Glutathione S-Transferase (GST), Heat Shock Proteins (HSPs)

Cite This Article

"WHEAT PERFORMS IN HEAT STRESS CONDITION: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp1065-1072, August-2018, Available at : http://www.jetir.org/papers/JETIRA006186.pdf

Publication Details

Published Paper ID: JETIRA006186
Registration ID: 186659
Published In: Volume 5 | Issue 8 | Year August-2018
DOI (Digital Object Identifier):
Page No: 1065-1072
ISSN Number: 2349-5162

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Cite This Article

"WHEAT PERFORMS IN HEAT STRESS CONDITION: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp1065-1072, August-2018, Available at : http://www.jetir.org/papers/JETIRA006186.pdf




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