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Energy use efficiency of root growth - a theoretical bioenergetics framework

Herrmann, Anke and Colombi, Tino (2019). Energy use efficiency of root growth - a theoretical bioenergetics framework. Plant Signaling and Behavior. 14 , 1-4
[Journal article]

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Abstract

Metabolic efficiency of root growth is a crucial physiological parameter, contributing to the amount of photosynthate that plants need to invest into soil exploration. Common measurements of metabolic efficiency usually rely on CO2 respiration measurements with the underlying assumption that all metabolic processes are taking place under aerobic conditions. In this conceptual paper, we introduce energy use efficiency based on the quantification of heat dissipation and energy fluxes as an alternative metric to quantify the metabolic efficiency of root growth. In a theoretical framework, we adopted recently published heat dissipation data from wheat seedlings and show that energy use efficiency decreases in response to (i) soil hypoxia and (ii) increased soil penetration resistance. In contrast to traditional CO2 respiration measurements, heat dissipation measurements account for both aerobic as well as anaerobic respiration in growing roots. Hence, we advocate that the quantification of heat dissipation provides a more complete picture of the metabolic efficiency of root growth than CO2 respiration measurements alone. We therefore propose that energy use efficiency should be included in future studies assessing the metabolic efficiency of root growth.

Authors/Creators:Herrmann, Anke and Colombi, Tino
Title:Energy use efficiency of root growth - a theoretical bioenergetics framework
Year of publishing :2019
Volume:14
Page range:1-4
Number of Pages:4
Publisher:Taylor & Francis
ISSN:1559-2316
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Plant Biotechnology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Keywords:Root growth, metabolic efficiency, calorimetry, calorespirometric ratio
URN:NBN:urn:nbn:se:slu:epsilon-p-102414
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-102414
Additional ID:
Type of IDID
DOI10.1080/15592324.2019.1685147
Web of Science (WoS)000493418600001
ID Code:16436
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:19 Dec 2019 12:41
Metadata Last Modified:19 Dec 2019 12:41

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