Related Experiment Video
Updated: Jun 3, 2026

Medium Preparation for the Cultivation of Microorganisms under Strictly Anaerobic/Anoxic Conditions
Published on: August 15, 2019
The anoxic plant mitochondrion as a nitrite: NO reductase
Kapuganti J Gupta1, Abir U Igamberdiev
1Department of Plant Physiology, University of Rostock, Albert Einstein Str. 3, D-10859, Germany. igamberdiev@mun.ca
Abstract:
Under the conditions of oxygen deprivation, accumulating nitrite can be reduced in the mitochondrial electron transport chain forming free radical nitric oxide (NO). By reducing nitrite to NO, plant mitochondria preserve the capacity to oxidize external NADH and NADPH and retain a limited power for ATP synthesis complementing glycolytic ATP production. NO participates in O(2) balance in mitochondria by competitively inhibiting cytochrome c oxidase which can oxidize it to nitrite when oxygen concentration increases. Some of the NO escapes to the cytosol, where the efficient scavenging system involving non-symbiotic hemoglobin oxygenates NO to nitrate and supports continuous anaerobic turnover of nitrogen species.
More Related Videos
08:03Unveiling Xenobiotic Transport and Effects in Isolated Mitochondria: Insights from Respirometric and Enzymatic Assays
Published on: March 7, 2025
08:05Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
Related Concept Videos
Anoxygenic Photosynthesis
Metabolism of Chemolithotrophs
Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...
Inorganic Nitrogen Assimilation
Redox Reactions
Redox Reactions