Elucidating the contribution of Alternative Oxidase 1a and 1d to respiration rates in Arabidopsis thaliana

Glenda Oh

doi:10.26182/dcnb-dn38

Elucidating the contribution of Alternative Oxidase 1a and 1d to respiration rates in Arabidopsis thaliana

Glenda Oh

Research output: Thesis › Doctoral Thesis

256 Downloads (Pure)

Abstract

Alternative oxidase (AOX) provides plants with metabolic flexibility by uncoupling respiration from ATP production. Exogenous supply of proline (Pro) and alanine (Ala) double night-time respiration rates and significantly induce AOX1a and AOX1d abundance. Enhanced AOX1a and AOX1d capacities allowed for Pro and Ala catabolism to be performed in a safe manner, limiting oxidative stress and allowing continuous functioning of other metabolic pathways, such as the TCA cycle and photosynthesis. Lack of AOX limited the ability of plants to recover from salinity stress through proline catabolism. These results show specific benefits of AOX during changes in metabolism from an energetic standpoint.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Millar, Harvey, Supervisor O'Leary, Brendan, Supervisor Lee, Alex, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	17 May 2022
DOIs	https://doi.org/10.26182/dcnb-dn38
Publication status	Unpublished - 2021

Access to Document

10.26182/dcnb-dn38

THESIS - DOCTOR OF PHILOSOPHY - OH, Glenda Guek Khim - 2021 - Part 1
THESIS - DOCTOR OF PHILOSOPHY - OH, Glenda Guek Khim - 2021 - Part 2
THESIS - DOCTOR OF PHILOSOPHY - OH, Glenda Guek Khim - 2021 - Part 3
THESIS - DOCTOR OF PHILOSOPHY - OH, Glenda Guek Khim - 2021 - Part 4
THESIS - DOCTOR OF PHILOSOPHY - OH, Glenda Guek Khim - 2021 - Part 5
This work is protected by Copyright. You may print or download ONE copy of this document for the purpose of your own non-commercial research or study. Any other use requires permission from the copyright owner. The Copyright Act requires you to attribute any copyright works you quote or paraphrase.

Cite this

@phdthesis{51db3e31a60046958def566d8b0f5d1e,

title = "Elucidating the contribution of Alternative Oxidase 1a and 1d to respiration rates in Arabidopsis thaliana",

abstract = "Alternative oxidase (AOX) provides plants with metabolic flexibility by uncoupling respiration from ATP production. Exogenous supply of proline (Pro) and alanine (Ala) double night-time respiration rates and significantly induce AOX1a and AOX1d abundance. Enhanced AOX1a and AOX1d capacities allowed for Pro and Ala catabolism to be performed in a safe manner, limiting oxidative stress and allowing continuous functioning of other metabolic pathways, such as the TCA cycle and photosynthesis. Lack of AOX limited the ability of plants to recover from salinity stress through proline catabolism. These results show specific benefits of AOX during changes in metabolism from an energetic standpoint.",

keywords = "Alternative oxidase, Arabidopsis, Night respiration, Mitochondria flexibility, Salinity, Knockout mutants, Metabolism",

author = "Glenda Oh",

year = "2021",

doi = "10.26182/dcnb-dn38",

language = "English",

school = "The University of Western Australia",

}

TY - BOOK

T1 - Elucidating the contribution of Alternative Oxidase 1a and 1d to respiration rates in Arabidopsis thaliana

AU - Oh, Glenda

PY - 2021

Y1 - 2021

N2 - Alternative oxidase (AOX) provides plants with metabolic flexibility by uncoupling respiration from ATP production. Exogenous supply of proline (Pro) and alanine (Ala) double night-time respiration rates and significantly induce AOX1a and AOX1d abundance. Enhanced AOX1a and AOX1d capacities allowed for Pro and Ala catabolism to be performed in a safe manner, limiting oxidative stress and allowing continuous functioning of other metabolic pathways, such as the TCA cycle and photosynthesis. Lack of AOX limited the ability of plants to recover from salinity stress through proline catabolism. These results show specific benefits of AOX during changes in metabolism from an energetic standpoint.

AB - Alternative oxidase (AOX) provides plants with metabolic flexibility by uncoupling respiration from ATP production. Exogenous supply of proline (Pro) and alanine (Ala) double night-time respiration rates and significantly induce AOX1a and AOX1d abundance. Enhanced AOX1a and AOX1d capacities allowed for Pro and Ala catabolism to be performed in a safe manner, limiting oxidative stress and allowing continuous functioning of other metabolic pathways, such as the TCA cycle and photosynthesis. Lack of AOX limited the ability of plants to recover from salinity stress through proline catabolism. These results show specific benefits of AOX during changes in metabolism from an energetic standpoint.

KW - Alternative oxidase

KW - Arabidopsis

KW - Night respiration

KW - Mitochondria flexibility

KW - Salinity

KW - Knockout mutants

KW - Metabolism

U2 - 10.26182/dcnb-dn38

DO - 10.26182/dcnb-dn38

M3 - Doctoral Thesis

ER -

Elucidating the contribution of Alternative Oxidase 1a and 1d to respiration rates in Arabidopsis thaliana

Abstract

Access to Document

Fingerprint

Cite this