scholarly journals Contrasting Responses to Stress Displayed by Tobacco Overexpressing an Algal Plastid Terminal Oxidase in the Chloroplast

2020 ◽  
Vol 11 ◽  
Author(s):  
Niaz Ahmad ◽  
Muhammad Omar Khan ◽  
Ejazul Islam ◽  
Zheng-Yi Wei ◽  
Lorna McAusland ◽  
...  
Keyword(s):  
Terminal Oxidase ◽  
Plastid Terminal Oxidase

In vitro characterization of a plastid terminal oxidase (PTOX)

2003 ◽  
Vol 270 (18) ◽  
pp. 3787-3794 ◽  
Author(s):  
Eve-Marie Josse ◽  
Jean-Pierre Alcaraz ◽  
Anne-Marie Laboure ◽  
Marcel Kuntz
Keyword(s):  
Terminal Oxidase ◽  
In Vitro Characterization ◽  
Plastid Terminal Oxidase

Alternative Oxidase (AOX) Genes of African Trypanosomes: Phylogeny and Evolution of AOX and Plastid Terminal Oxidase Families

2005 ◽  
Vol 52 (4) ◽  
pp. 374-381 ◽  
Author(s):  
TAKASHI SUZUKI ◽  
TETSUO HASHIMOTO ◽  
YOSHISADA YABU ◽  
PHELIX A. O. MAJIWA ◽  
SHIGERU OHSHIMA ◽  
...  
Keyword(s):  
Alternative Oxidase ◽  
Terminal Oxidase ◽  
African Trypanosomes ◽  
Phylogeny And Evolution ◽  
Plastid Terminal Oxidase

scholarly journals Dynamics of the localization of the plastid terminal oxidase inside the chloroplast

2020 ◽  
Vol 71 (9) ◽  
pp. 2661-2669 ◽  
Author(s):  
Susanne Bolte ◽  
Elodie Marcon ◽  
Mélanie Jaunario ◽  
Lucas Moyet ◽  
Maité Paternostre ◽  
...  
Keyword(s):  
Thylakoid Membrane ◽  
Fluorescent Protein ◽  
Proton Motive Force ◽  
Motive Force ◽  
Terminal Oxidase ◽  
Valve Function ◽  
Partial Dissociation ◽  
Green Fluorescent ◽  
Plastid Terminal Oxidase

Abstract The plastid terminal oxidase (PTOX) is a plastohydroquinone:oxygen oxidoreductase that shares structural similarities with alternative oxidases (AOXs). Multiple roles have been attributed to PTOX, such as involvement in carotene desaturation, a safety valve function, participation in the processes of chlororespiration, and setting the redox poise for cyclic electron transport. PTOX activity has been previously shown to depend on its localization at the thylakoid membrane. Here we investigate the dynamics of PTOX localization dependent on the proton motive force. Infiltrating illuminated leaves with uncouplers led to a partial dissociation of PTOX from the thylakoid membrane. In vitro reconstitution experiments showed that the attachment of purified recombinant maltose-binding protein (MBP)–OsPTOX to liposomes and isolated thylakoid membranes was strongest at slightly alkaline pH values in the presence of lower millimolar concentrations of KCl or MgCl2. In Arabidopsis thaliana overexpressing green fluorescent protein (GFP)–PTOX, confocal microscopy images showed that PTOX formed distinct spots in chloroplasts of dark-adapted or uncoupler-treated leaves, while the protein was more equally distributed in a network-like structure in the light. We propose a dynamic PTOX association with the thylakoid membrane depending on the presence of a proton motive force.

Contrasting responses of plastid terminal oxidase activity under salt stress in two C4 species with different salt tolerance

Authorea ◽  
2020 ◽  
Author(s):  
Jemaa Essemine ◽  
Ming Ju Amy Lyu ◽  
Mingnan Qu ◽  
Shahnaz Perveen ◽  
Naveed Khan ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Oxidase Activity ◽  
Terminal Oxidase ◽  
C4 Species ◽  
Plastid Terminal Oxidase

scholarly journals Isolation and characterization of plastid terminal oxidase gene from carrot and its relation to carotenoid accumulation

Plant Gene ◽  
2016 ◽  
Vol 5 ◽  
pp. 13-21 ◽  
Author(s):  
M. Doroteia Campos ◽  
Catarina Campos ◽  
Hélia G. Cardoso ◽  
Philipp W. Simon ◽  
Manuela Oliveira ◽  
...  
Keyword(s):  
Terminal Oxidase ◽  
Oxidase Gene ◽  
Carotenoid Accumulation ◽  
Isolation And Characterization ◽  
Plastid Terminal Oxidase
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