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The signaling role of a mitochondrial superoxide burst during stress
Plant mitochondria are proposed to act as signaling organelles in the orchestration of defense responses to biotic stress and acclimation responses to abiotic stress. However, the primary signal(s) being generated by mitochondria and then interpreted by the cell are largely unknown. Recently, we sho...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Landes Bioscience
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3745582/ https://www.ncbi.nlm.nih.gov/pubmed/23221746 http://dx.doi.org/10.4161/psb.22749 |
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author | Cvetkovska, Marina Alber, Nicole A. Vanlerberghe, Greg C. |
author_facet | Cvetkovska, Marina Alber, Nicole A. Vanlerberghe, Greg C. |
author_sort | Cvetkovska, Marina |
collection | PubMed |
description | Plant mitochondria are proposed to act as signaling organelles in the orchestration of defense responses to biotic stress and acclimation responses to abiotic stress. However, the primary signal(s) being generated by mitochondria and then interpreted by the cell are largely unknown. Recently, we showed that mitochondria generate a sustained burst of superoxide (O(2)(-)) during particular plant-pathogen interactions. This O(2)(-) burst appears to be controlled by mitochondrial components that influence rates of O(2)(-) generation and scavenging within the organelle. The O(2)(-) burst appears to influence downstream processes such as the hypersensitive response, indicating that it could represent an important mitochondrial signal in support of plant stress responses. The findings generate many interesting questions regarding the upstream factors required to generate the O(2)(-) burst, the mitochondrial events that occur in support of and in parallel with this burst and the downstream events that respond to this burst. |
format | Online Article Text |
id | pubmed-3745582 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Landes Bioscience |
record_format | MEDLINE/PubMed |
spelling | pubmed-37455822013-08-29 The signaling role of a mitochondrial superoxide burst during stress Cvetkovska, Marina Alber, Nicole A. Vanlerberghe, Greg C. Plant Signal Behav Addendum Plant mitochondria are proposed to act as signaling organelles in the orchestration of defense responses to biotic stress and acclimation responses to abiotic stress. However, the primary signal(s) being generated by mitochondria and then interpreted by the cell are largely unknown. Recently, we showed that mitochondria generate a sustained burst of superoxide (O(2)(-)) during particular plant-pathogen interactions. This O(2)(-) burst appears to be controlled by mitochondrial components that influence rates of O(2)(-) generation and scavenging within the organelle. The O(2)(-) burst appears to influence downstream processes such as the hypersensitive response, indicating that it could represent an important mitochondrial signal in support of plant stress responses. The findings generate many interesting questions regarding the upstream factors required to generate the O(2)(-) burst, the mitochondrial events that occur in support of and in parallel with this burst and the downstream events that respond to this burst. Landes Bioscience 2013-01-01 2012-12-06 /pmc/articles/PMC3745582/ /pubmed/23221746 http://dx.doi.org/10.4161/psb.22749 Text en Copyright © 2013 Landes Bioscience http://creativecommons.org/licenses/by-nc/3.0/ This is an open-access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may be redistributed, reproduced, and reused for non-commercial purposes, provided the original source is properly cited. |
spellingShingle | Addendum Cvetkovska, Marina Alber, Nicole A. Vanlerberghe, Greg C. The signaling role of a mitochondrial superoxide burst during stress |
title | The signaling role of a mitochondrial superoxide burst during stress |
title_full | The signaling role of a mitochondrial superoxide burst during stress |
title_fullStr | The signaling role of a mitochondrial superoxide burst during stress |
title_full_unstemmed | The signaling role of a mitochondrial superoxide burst during stress |
title_short | The signaling role of a mitochondrial superoxide burst during stress |
title_sort | signaling role of a mitochondrial superoxide burst during stress |
topic | Addendum |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3745582/ https://www.ncbi.nlm.nih.gov/pubmed/23221746 http://dx.doi.org/10.4161/psb.22749 |
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