Respiratory processes in non-photosynthetic plastids
Renato, Marta (Centre de Recerca en Agrigenòmica)
Boronat i Margosa, Albert (Centre de Recerca en Agrigenòmica)
Azcón-Bieto, Joaquín (Universitat de Barcelona. Departament de Biologia Vegetal)

Date:	2015
Abstract:	Chlororespiration is a respiratory process located in chloroplast thylakoids which consists in an electron transport chain from NAD(P)H to oxygen. This respiratory chain involves the NAD(P)H dehydrogenase complex, the plastoquinone pool and the plastid terminal oxidase (PTOX), and it probably acts as a safety valve to prevent the over-reduction of the photosynthetic machinery in stress conditions. The existence of a similar respiratory activity in non-photosynthetic plastids has been less studied. Recently, it has been reported that tomato fruit chromoplasts present an oxygen consumption activity linked to ATP synthesis. Etioplasts and amyloplasts contain several electron carriers and some subunits of the ATP synthase, so they could harbor a similar respiratory process. This review provides an update on the study about respiratory processes in chromoplasts, identifying the major gaps that need to be addressed in future research. It also reviews the proteomic data of etioplasts and amyloplasts, which suggest the presence of a respiratory electron transport chain in these plastids.
Grants:	Ministerio de Ciencia e Innovación BIO2009-09523 Ministerio de Economía y Competitividad AGL2013-43522-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1434
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Plastid ; Chromoplast ; Etioplast ; Amyloplast ; Chlororespiration ; Chromorespiration ; PTOX ; Plastid respiration
Published in:	Frontiers in plant science, Vol. 6 (July 2015) , ISSN 1664-462X

DOI: 10.3389/fpls.2015.00496
PMID: 26236317

7 p, 467.2 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CRAG (Centre for Research in Agricultural Genomics)
Articles > Research articles
Articles > Published articles