Inhibition of polyamine oxidase activity affects tumor development during the maize-Ustilago maydis interaction

Copyright © 2016 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 102(2016) vom: 26. Mai, Seite 115-24
1. Verfasser: Jasso-Robles, Francisco Ignacio (VerfasserIn)
Weitere Verfasser: Jiménez-Bremont, Juan Francisco, Becerra-Flora, Alicia, Juárez-Montiel, Margarita, Gonzalez, María Elisa, Pieckenstain, Fernando Luis, García de la Cruz, Ramón Fernando, Rodríguez-Kessler, Margarita
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Research Support, Non-U.S. Gov't 1,8-Diaminooctane Biotic stress Cell elongation Hydrogen peroxide Plant tumors Polyamine oxidase Ustilago maydis Plant Proteins mehr... Oxidoreductases Acting on CH-NH Group Donors EC 1.5.-
Beschreibung
Zusammenfassung:Copyright © 2016 Elsevier Masson SAS. All rights reserved.
Ustilago maydis is a biotrophic plant pathogenic fungus that leads to tumor development in the aerial tissues of its host, Zea mays. These tumors are the result of cell hypertrophy and hyperplasia, and are accompanied by the reprograming of primary and secondary metabolism of infected plants. Up to now, little is known regarding key plant actors and their role in tumor development during the interaction with U. maydis. Polyamines are small aliphatic amines that regulate plant growth, development and stress responses. In a previous study, we found substantial increases of polyamine levels in tumors. In the present work, we describe the maize polyamine oxidase (PAO) gene family, its contribution to hydrogen peroxide (H2O2) production and its possible role in tumor development induced by U. maydis. Histochemical analysis revealed that chlorotic lesions and maize tumors induced by U. maydis accumulate H2O2 to significant levels. Maize plants inoculated with U. maydis and treated with the PAO inhibitor 1,8-diaminooctane exhibit a notable reduction of H2O2 accumulation in infected tissues and a significant drop in PAO activity. This treatment also reduced disease symptoms in infected plants. Finally, among six maize PAO genes only the ZmPAO1, which encodes an extracellular enzyme, is up-regulated in tumors. Our data suggest that H2O2 produced through PA catabolism by ZmPAO1 plays an important role in tumor development during the maize-U. maydis interaction
Beschreibung:Date Completed 13.12.2016
Date Revised 13.12.2023
published: Print-Electronic
Citation Status MEDLINE
ISSN:1873-2690
DOI:10.1016/j.plaphy.2016.02.019