Expression profile of seven polyamine oxidase genes in rice (Oryza sativa) in response to abiotic stresses, phytohormones and polyamines
| Autor: | Thomas Berberich, Tomonobu Kusano, Masataka Inoue, G. H. M. Sagor |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology Catabolism Abiotic stress Jasmonic acid Spermine Plant Science 01 natural sciences Spermidine 03 medical and health sciences chemistry.chemical_compound 030104 developmental biology chemistry Biochemistry Polyamine Molecular Biology Abscisic acid Polyamine oxidase 010606 plant biology & botany |
| Zdroj: | Physiology and Molecular Biology of Plants. 27:1353-1359 |
| ISSN: | 0974-0430 0971-5894 |
| Popis: | Polyamine levels are controlled by biosynthesis, intra- and inter-cellular flux by the respective transporters, and catabolism. The catabolism is catalyzed by two groups of enzymes. One is copper-containing amine oxidases and the other is polyamine oxidases (PAOs). In Oryza sativa, seven PAO genes exist and they are termed as OsPAO1 to OsPAO7. However, their physiological function has not been elucidated yet. Here, we examined the expressional changes of seven OsPAO genes upon abiotic and oxidative stress, phytohormone, and exogenous polyamines application. The transcript of extracellular polyamine oxidase OsPAO2 and OsPAO6 are strongly induced upon wounding, drought, salinity, oxidative stress (H2O2), and exogenous application of jasmonic acid, spermidine, spermine, thermospermine and negatively regulated upon indole acetic acid, isopentenyl adenine (iPT), gibberellic acid (GA), abscisic acid; OsPAO7 is to iPT, GA and all polyamines; OsPAO4 and OsPAO5 are mildly responsive to heat, cold, oxidative stress. These results suggest that polyamine oxidase encoding extracellular enzyme may play a pivotal role during exogenous stimulus to protect the plant cell. |
| Databáze: | OpenAIRE |
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