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NO and ROS crosstalk and acquisition of abiotic stress tolerance
Umeå University, Faculty of Medicine, Department of Medical Biochemistry and Biophysics. School of Applied Biosciences, Kyungpook National University, Buk-gu, Daegu, South Korea.ORCID iD: 0000-0002-7072-451x
School of Applied Biosciences, Kyungpook National University, Buk-gu, Daegu, South Korea; Agriculture Research Institute, Khyber Pakhtunkhwa, Mingora, Pakistan.
Department of Agriculture, Abdul Wali Khan University, Khyber Pakhtunkhwa, Mardan, Pakistan.
School of Applied Biosciences, Kyungpook National University, Buk-gu, Daegu, South Korea.
2021 (English)In: Nitric oxide in plant biology: an ancient molecule with emerging roles / [ed] Vijay Pratap Singh; Samiksha Singh; Durgesh Kumar Tripathi; Maria C. Romero-Puertas; Luisa Maria Sandalio, Elsevier, 2021, p. 477-491Chapter in book (Refereed)
Abstract [en]

Nitric oxide (NO) and H2O2, known as signaling molecules, particularly regulate various cellular processes under stress conditions. Abiotic stress, like other stresses, leads to the production of reactive oxygen and nitrogen species (ROS and RNS, respectively). The interaction or crosstalk between these two redox molecules is important for the regulation of cellular processes. Increasing evidence has suggested that NO transfers its bioactivity through posttranslational modifications, the major among them is S-nitrosation, the covalent attachment of an NO moiety to a cysteine thiol that can bring conformational changes in proteins and hence in their functions. S-nitrosation of the tripeptide glutathione (GSH) results in the formation of S-nitrosoglutathione (GSNO), which is a relatively stable reservoir of NO. The formation of GSNO, therefore, determines cellular redox status, crucial for normal metabolic activities, and is regulated by key enzyme GSNO reductase (GSNOR) in plants. Here, we overview the importance of H2O2 and NO as signaling molecules in plants and their roles in stress tolerance. We also discuss crosstalk between H2O2 and NO and its importance in abiotic stress tolerance, with examples of salt, cold, drought, metal, and heat tolerance. The accumulated data from the cited research has important implications for the improved productivity of many crop plants.

Place, publisher, year, edition, pages
Elsevier, 2021. p. 477-491
Keywords [en]
GSNOR, H2O2, Nitric oxide (NO), NO and H2O2 crosstalk, NO signaling, S-nitrosation
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-193694DOI: 10.1016/B978-0-12-818797-5.00024-8Scopus ID: 2-s2.0-85127152524ISBN: 9780128187975 (electronic)OAI: oai:DiVA.org:umu-193694DiVA, id: diva2:1654992
Available from: 2022-04-29 Created: 2022-04-29 Last updated: 2022-04-29Bibliographically approved

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Imran, Qari Muhammad

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