Chapter 26

S-Nitrosoglutathione (GSNO) and Plant Stress Responses

Anjali Khajuria

Anjali Khajuria

Department of Zoology, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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Shagun Bali

Shagun Bali

Department of Botanical and Environmental Sciences, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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Priyanka Sharma

Priyanka Sharma

Department of Zoology, Guru Nank Dev University, Amritsar, Punjab, India

Department of Botanical and Environmental Sciences, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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Ravinderjit Kaur

Ravinderjit Kaur

Department of Zoology, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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Shivam Jasrotia

Shivam Jasrotia

Department of Zoology, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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Poonam Saini

Poonam Saini

Department of Botanical and Environmental Sciences, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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Puja Ohri

Puja Ohri

Department of Zoology, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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Renu Bhardwaj

Renu Bhardwaj

Department of Botanical and Environmental Sciences, Guru Nank Dev University, Amritsar, Punjab, India

Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

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First published: 05 July 2019
Citations: 1

Summary

(GSNO), a product of S-nitrosylation of nitric oxide (NO) with reduced glutathione, is one of an important S-nitrosothiol (SNOs) that is involved in post-translational modifications. Its production depends upon the concentration of nitric oxide, a key molecule in signaling pathway in plants, but it may lead to reactive nitrogen species (RNS) which react with cellular glutathione, a major antioxidant, to form GSNO. It plays an important role in physiological signaling during abiotic/biotic stress conditions. S-nitrosoglutathione reductase (GSNOR) enzymes catalyze the conversion of GSNO to oxidized glutathione (GSSG) and ammonia (NH3) providing resistance against pathogens. Also, its amount found to be increased in wounded tissues of Arabidopsis thaliana indicates its role in improving systemic acquired resistance (SAR). GSNO maintains protein homeostasis by facilitating oligomerization at cystein-156 during salicylic acid induction. It is designated as NO reservoir and central component of NO dependent signal transduction during adverse conditions.

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