In comparison with nitrate nutrition, ammonium nutrition increases growth of the frostbite1 Arabidopsis mutant. Podgorska, A., Ostaszewska, M., Gardestrom, P., Rasmusson, A. G., & Szal, B. Plant Cell Environ, 38(1):224–37, January, 2015. Edition: 2014/07/22![In comparison with nitrate nutrition, ammonium nutrition increases growth of the frostbite1 Arabidopsis mutant [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Ammonium nutrition inhibits the growth of many plant species, including Arabidopsis thaliana. The toxicity of ammonium is associated with changes in the cellular redox state. The cellular oxidant/antioxidant balance is controlled by mitochondrial electron transport chain. In this study, we analysed the redox metabolism of frostbite1 (fro1) plants, which lack mitochondrial respiratory chain complex I. Surprisingly, the growth of fro1 plants increased under ammonium nutrition. Ammonium nutrition increased the reduction level of pyridine nucleotides in the leaves of wild-type plants, but not in the leaves of fro1 mutant plants. The observed higher activities of type II NADH dehydrogenases and cytochrome c oxidase in the mitochondrial electron transport chain may improve the energy metabolism of fro1 plants grown on ammonium. Additionally, the observed changes in reactive oxygen species (ROS) metabolism in the apoplast may be important for determining the growth of fro1 under ammonium nutrition. Moreover, bioinformatic analyses showed that the gene expression changes in fro1 plants significantly overlap with the changes previously observed in plants with a modified apoplastic pH. Overall, the results suggest a pronounced connection between the mitochondrial redox system and the apoplastic pH and ROS levels, which may modify cell wall plasticity and influence growth.
@article{podgorska_comparison_2015,
title = {In comparison with nitrate nutrition, ammonium nutrition increases growth of the frostbite1 {Arabidopsis} mutant},
volume = {38},
issn = {1365-3040 (Electronic) 0140-7791 (Linking)},
shorttitle = {In comparison with nitrate nutrition, ammonium nutrition increases growth of the frostbite1 {A} rabidopsis mutant},
url = {https://www.ncbi.nlm.nih.gov/pubmed/25040883},
doi = {10/f3mzhm},
abstract = {Ammonium nutrition inhibits the growth of many plant species, including Arabidopsis thaliana. The toxicity of ammonium is associated with changes in the cellular redox state. The cellular oxidant/antioxidant balance is controlled by mitochondrial electron transport chain. In this study, we analysed the redox metabolism of frostbite1 (fro1) plants, which lack mitochondrial respiratory chain complex I. Surprisingly, the growth of fro1 plants increased under ammonium nutrition. Ammonium nutrition increased the reduction level of pyridine nucleotides in the leaves of wild-type plants, but not in the leaves of fro1 mutant plants. The observed higher activities of type II NADH dehydrogenases and cytochrome c oxidase in the mitochondrial electron transport chain may improve the energy metabolism of fro1 plants grown on ammonium. Additionally, the observed changes in reactive oxygen species (ROS) metabolism in the apoplast may be important for determining the growth of fro1 under ammonium nutrition. Moreover, bioinformatic analyses showed that the gene expression changes in fro1 plants significantly overlap with the changes previously observed in plants with a modified apoplastic pH. Overall, the results suggest a pronounced connection between the mitochondrial redox system and the apoplastic pH and ROS levels, which may modify cell wall plasticity and influence growth.},
language = {en},
number = {1},
urldate = {2021-06-07},
journal = {Plant Cell Environ},
author = {Podgorska, A. and Ostaszewska, M. and Gardestrom, P. and Rasmusson, A. G. and Szal, B.},
month = jan,
year = {2015},
note = {Edition: 2014/07/22},
keywords = {*Gene Expression Regulation, Plant, Ammonium Compounds/*metabolism, Arabidopsis Proteins/genetics/*metabolism, Arabidopsis/genetics/growth \& development/*metabolism/ultrastructure, Cell Respiration, Electron Transport Complex IV/genetics/metabolism, Energy Metabolism, Homeostasis, Hydrogen-Ion Concentration, Metabolome, Mitochondria/metabolism, Mutation, NADH Dehydrogenase/genetics/*metabolism, Nitrates/*metabolism, Oxidation-Reduction, Plant Leaves/genetics/growth \& development/metabolism/ultrastructure, Reactive Oxygen Species/metabolism, ammonium syndrome, apoplast, apoplastic pH, complex I, dysfunction of mtETC, mitochondria, redox homeostasis, respiration},
pages = {224--37},
}
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The cellular oxidant/antioxidant balance is controlled by mitochondrial electron transport chain. In this study, we analysed the redox metabolism of frostbite1 (fro1) plants, which lack mitochondrial respiratory chain complex I. Surprisingly, the growth of fro1 plants increased under ammonium nutrition. Ammonium nutrition increased the reduction level of pyridine nucleotides in the leaves of wild-type plants, but not in the leaves of fro1 mutant plants. The observed higher activities of type II NADH dehydrogenases and cytochrome c oxidase in the mitochondrial electron transport chain may improve the energy metabolism of fro1 plants grown on ammonium. Additionally, the observed changes in reactive oxygen species (ROS) metabolism in the apoplast may be important for determining the growth of fro1 under ammonium nutrition. 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