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Interaction Between Nitric Oxide and Silicon on Leghaemoglobin and S-Nitrosothiol Levels in Soybean Nodules.
Biomolecules
November 2024
Department of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea.
Nitrogen fixation in legume nodules is crucial for plant growth and development. Therefore, this study aims to investigate the effects of nitric oxide [S-nitrosoglutathione (GSNO)] and silicon [sodium metasilicate (Si)], both individually and in combination, on soybean growth, nodule formation, leghaemoglobin (Lb) synthesis, and potential post-translational modifications. At the V1 stage, soybean plants were treated for 2 weeks with 150 µM GSNO, and Si at concentrations of 1 mM, 2 mM, and 4 mM.
View Article and Find Full Text PDFHarnessing Walnut-Based Zinc Oxide Nanoparticles: A Sustainable Approach to Combat the Disease Complex of and in Cowpea.
Plants (Basel)
June 2024
Mycology & Nematology Genetic Diversity & Biology Laboratory, USDA, ARS, Bldg. 010A, Rm. 111, 118, BARC-West 10300 Baltimore Avenue, Beltsville, MD 20705, USA.
Zinc oxide nanoparticles (ZnO NPs) exhibit diverse applications, including antimicrobial, UV-blocking, and catalytic properties, due to their unique structure and properties. This study focused on the characterization of zinc oxide nanoparticles (ZnO NPs) synthesized from Juglans regia leaves and their application in mitigating the impact of simultaneous infection by (root-knot nematode) and (root-rot fungus) in cowpea plants. The characterization of ZnO NPs was carried out through various analytical techniques, including UV-visible spectrophotometry, Powder-XRD analysis, FT-IR spectroscopy, and SEM-EDX analysis.
View Article and Find Full Text PDFThe emerging roles of nitric oxide and its associated scavengers-phytoglobins-in plant symbiotic interactions.
J Exp Bot
January 2024
National Institute for Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, India.
A key feature in the establishment of symbiosis between plants and microbes is the maintenance of the balance between the production of the small redox-related molecule, nitric oxide (NO), and its cognate scavenging pathways. During the establishment of symbiosis, a transition from a normoxic to a microoxic environment often takes place, triggering the production of NO from nitrite via a reductive production pathway. Plant hemoglobins [phytoglobins (Phytogbs)] are a central tenant of NO scavenging, with NO homeostasis maintained via the Phytogb-NO cycle.
View Article and Find Full Text PDFHeme catabolism mediated by heme oxygenase in uninfected interstitial cells enables efficient symbiotic nitrogen fixation in Lotus japonicus nodules.
New Phytol
September 2023
National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, 430070, China.
Article Synopsis
- Legume nodules make a lot of heme, which is important for creating leghemoglobin that helps plants fix nitrogen.
- Scientists studied a plant called Lotus japonicus to find out how a specific enzyme called LjHO1 helps break down heme and discovered that this enzyme is crucial for keeping the plant healthy and fixing nitrogen.
- When they mutated (changed) the LjHO1 gene, the plants had fewer green nodules and couldn't fix nitrogen well, showing that LjHO1 is really important for the plant's health and defense against stress.
Non-Native Structures of Apomyoglobin and Apoleghemoglobin in Folding Intermediates Related to the Protein Misfolding.
Molecules
May 2023
Department of Bioinformatics, College of Life Sciences, Ritsumeikan University, Kusatsu 528-8577, Japan.
Protein folding is essential for a polypeptide chain to acquire its proper structure and function. Globins are a superfamily of ubiquitous heme-binding α-helical proteins whose function is principally to regulate oxygen homoeostasis. In this review, we explore the hierarchical helical formation in the globin proteins apomyoglobin and leghemoglobin, and we discuss the existence of non-native and misfolded structures occurring during the course of folding to its native state.
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