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Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric
Climacteric fruits are characterized by a dramatic increase in autocatalytic ethylene production that is accompanied by a spike in respiration at the onset of ripening. The change in the mode of ethylene production from autoinhibitory to autostimulatory is known as the System 1 (S1) to System 2 (S2)...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7652990/ https://www.ncbi.nlm.nih.gov/pubmed/33193478 http://dx.doi.org/10.3389/fpls.2020.543958 |
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author | Hewitt, Seanna Dhingra, Amit |
author_facet | Hewitt, Seanna Dhingra, Amit |
author_sort | Hewitt, Seanna |
collection | PubMed |
description | Climacteric fruits are characterized by a dramatic increase in autocatalytic ethylene production that is accompanied by a spike in respiration at the onset of ripening. The change in the mode of ethylene production from autoinhibitory to autostimulatory is known as the System 1 (S1) to System 2 (S2) transition. Existing physiological models explain the basic and overarching genetic, hormonal, and transcriptional regulatory mechanisms governing the S1 to S2 transition of climacteric fruit. However, the links between ethylene and respiration, the two main factors that characterize the respiratory climacteric, have not been examined in detail at the molecular level. Results of recent studies indicate that the alternative oxidase (AOX) respiratory pathway may play an essential role in mediating cross-talk between ethylene response, carbon metabolism, ATP production, and ROS signaling during climacteric ripening. New genomic, metabolic, and epigenetic information sheds light on the interconnectedness of ripening metabolic pathways, necessitating an expansion of the current, ethylene-centric physiological models. Understanding points at which ripening responses can be manipulated may reveal key, species- and cultivar-specific targets for regulation of ripening, enabling superior strategies for reducing postharvest wastage. |
format | Online Article Text |
id | pubmed-7652990 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-76529902020-11-13 Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric Hewitt, Seanna Dhingra, Amit Front Plant Sci Plant Science Climacteric fruits are characterized by a dramatic increase in autocatalytic ethylene production that is accompanied by a spike in respiration at the onset of ripening. The change in the mode of ethylene production from autoinhibitory to autostimulatory is known as the System 1 (S1) to System 2 (S2) transition. Existing physiological models explain the basic and overarching genetic, hormonal, and transcriptional regulatory mechanisms governing the S1 to S2 transition of climacteric fruit. However, the links between ethylene and respiration, the two main factors that characterize the respiratory climacteric, have not been examined in detail at the molecular level. Results of recent studies indicate that the alternative oxidase (AOX) respiratory pathway may play an essential role in mediating cross-talk between ethylene response, carbon metabolism, ATP production, and ROS signaling during climacteric ripening. New genomic, metabolic, and epigenetic information sheds light on the interconnectedness of ripening metabolic pathways, necessitating an expansion of the current, ethylene-centric physiological models. Understanding points at which ripening responses can be manipulated may reveal key, species- and cultivar-specific targets for regulation of ripening, enabling superior strategies for reducing postharvest wastage. Frontiers Media S.A. 2020-10-27 /pmc/articles/PMC7652990/ /pubmed/33193478 http://dx.doi.org/10.3389/fpls.2020.543958 Text en Copyright © 2020 Hewitt and Dhingra. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Hewitt, Seanna Dhingra, Amit Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric |
title | Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric |
title_full | Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric |
title_fullStr | Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric |
title_full_unstemmed | Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric |
title_short | Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric |
title_sort | beyond ethylene: new insights regarding the role of alternative oxidase in the respiratory climacteric |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7652990/ https://www.ncbi.nlm.nih.gov/pubmed/33193478 http://dx.doi.org/10.3389/fpls.2020.543958 |
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