Benkő, Péter and Gémes, Katalin and Fehér, Attila (2022) Polyamine Oxidase-Generated Reactive Oxygen Species in Plant Development and Adaptation: The Polyamine Oxidase—NADPH Oxidase Nexus. ANTIOXIDANTS, 11 (12). ISSN 2076-3921
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Abstract
Metabolism and regulation of cellular polyamine levels are crucial for living cells to maintain their homeostasis and function. Polyamine oxidases (PAOs) terminally catabolize polyamines or catalyse the back-conversion reactions when spermine is converted to spermidine and Spd to putrescine. Hydrogen peroxide (H2O2) is a by-product of both the catabolic and back-conversion processes. Pharmacological and genetic approaches have started to uncover the roles of PAO-generated H2O2 in various plant developmental and adaptation processes such as cell differentiation, senes- cence, programmed cell death, and abiotic and biotic stress responses. Many of these studies have revealed that the superoxide-generating Respiratory Burst Oxidase Homolog (RBOH) NADPH oxidases control the same processes either upstream or downstream of PAO action. Therefore, it is reasonable to suppose that the two enzymes co-ordinately control the cellular homeostasis of reactive oxygen species. The intricate relationship between PAOs and RBOHs is also discussed, posing the hypothesis that these enzymes indirectly control each other’s abundance/function via H2O2.
Item Type: | Article |
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Uncontrolled Keywords: | polyamines; polyamine oxidase; NADPH oxidase; polyamine catabolism; stress response; hydrogen peroxide |
Subjects: | Q Science / természettudomány > QK Botany / növénytan |
SWORD Depositor: | MTMT SWORD |
Depositing User: | MTMT SWORD |
Date Deposited: | 13 Feb 2023 14:37 |
Last Modified: | 13 Feb 2023 14:37 |
URI: | http://real.mtak.hu/id/eprint/158936 |
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