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Down-regulation of respiration in pear fruit depends on temperature

The respiration rate of plant tissues decreases when the amount of available O(2) is reduced. There is, however, a debate on whether the respiration rate is controlled either by diffusion limitation of oxygen or through regulatory processes at the level of the transcriptome. We used experimental and...

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Autores principales: Ho, Quang Tri, Hertog, Maarten L A T M, Verboven, Pieter, Ambaw, Alemayehu, Rogge, Seppe, Verlinden, Bert E, Nicolaï, Bart M
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6018969/
https://www.ncbi.nlm.nih.gov/pubmed/29394374
http://dx.doi.org/10.1093/jxb/ery031
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author Ho, Quang Tri
Hertog, Maarten L A T M
Verboven, Pieter
Ambaw, Alemayehu
Rogge, Seppe
Verlinden, Bert E
Nicolaï, Bart M
author_facet Ho, Quang Tri
Hertog, Maarten L A T M
Verboven, Pieter
Ambaw, Alemayehu
Rogge, Seppe
Verlinden, Bert E
Nicolaï, Bart M
author_sort Ho, Quang Tri
collection PubMed
description The respiration rate of plant tissues decreases when the amount of available O(2) is reduced. There is, however, a debate on whether the respiration rate is controlled either by diffusion limitation of oxygen or through regulatory processes at the level of the transcriptome. We used experimental and modelling approaches to demonstrate that both diffusion limitation and metabolic regulation affect the response of respiration of bulky plant organs such as fruit to reduced O(2) levels in the surrounding atmosphere. Diffusion limitation greatly affects fruit respiration at high temperature, but at low temperature respiration is reduced through a regulatory process, presumably a response to a signal generated by a plant oxygen sensor. The response of respiration to O(2) is time dependent and is highly sensitive, particularly at low O(2) levels in the surrounding atmosphere. Down-regulation of the respiration at low temperatures may save internal O(2) and relieve hypoxic conditions in the fruit.
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spelling pubmed-60189692018-07-20 Down-regulation of respiration in pear fruit depends on temperature Ho, Quang Tri Hertog, Maarten L A T M Verboven, Pieter Ambaw, Alemayehu Rogge, Seppe Verlinden, Bert E Nicolaï, Bart M J Exp Bot Research Paper The respiration rate of plant tissues decreases when the amount of available O(2) is reduced. There is, however, a debate on whether the respiration rate is controlled either by diffusion limitation of oxygen or through regulatory processes at the level of the transcriptome. We used experimental and modelling approaches to demonstrate that both diffusion limitation and metabolic regulation affect the response of respiration of bulky plant organs such as fruit to reduced O(2) levels in the surrounding atmosphere. Diffusion limitation greatly affects fruit respiration at high temperature, but at low temperature respiration is reduced through a regulatory process, presumably a response to a signal generated by a plant oxygen sensor. The response of respiration to O(2) is time dependent and is highly sensitive, particularly at low O(2) levels in the surrounding atmosphere. Down-regulation of the respiration at low temperatures may save internal O(2) and relieve hypoxic conditions in the fruit. Oxford University Press 2018-04-03 2018-01-31 /pmc/articles/PMC6018969/ /pubmed/29394374 http://dx.doi.org/10.1093/jxb/ery031 Text en © The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Paper
Ho, Quang Tri
Hertog, Maarten L A T M
Verboven, Pieter
Ambaw, Alemayehu
Rogge, Seppe
Verlinden, Bert E
Nicolaï, Bart M
Down-regulation of respiration in pear fruit depends on temperature
title Down-regulation of respiration in pear fruit depends on temperature
title_full Down-regulation of respiration in pear fruit depends on temperature
title_fullStr Down-regulation of respiration in pear fruit depends on temperature
title_full_unstemmed Down-regulation of respiration in pear fruit depends on temperature
title_short Down-regulation of respiration in pear fruit depends on temperature
title_sort down-regulation of respiration in pear fruit depends on temperature
topic Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6018969/
https://www.ncbi.nlm.nih.gov/pubmed/29394374
http://dx.doi.org/10.1093/jxb/ery031
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