Document Detail


Chloroplast ultrastructure and thylakoid polypeptide composition are affected by different salt concentrations in the halophytic plant Arthrocnemum macrostachyum.
MedLine Citation:
PMID:  22118876     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The effect of different external salt concentrations, from 0mM to 1030mM NaCl, on photosynthetic complexes and chloroplast ultrastructure in the halophyte Arthrocnemum macrostachyum was studied. Photosystem II, but not Photosystem I or cytochrome b6/f, was affected by salt treatment. We found that the PsbQ protein was never expressed, whereas the amounts of PsbP and PsbO were influenced by salt in a complex way. Analyses of Photosystem II intrinsic proteins showed an uneven degradation of subunits with a loss of about 50% of centres in the 0mM NaCl treated sample. Also the shape of chloroplasts, as well as the organization of thylakoid membranes were affected by NaCl concentration, with many grana containing few thylakoids at 1030mM NaCl and thicker grana and numerous swollen thylakoids at 0mM NaCl. The PsbQ protein was found to be depleted also in thylakoids from other halophytes.
Authors:
Andrea Trotta; Susana Redondo-Gómez; Cristina Pagliano; Manuel Enrique Figueroa Clemente; Nicoletta Rascio; Nicoletta La Rocca; Alessia Antonacci; Flora Andreucci; Roberto Barbato
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-25
Journal Detail:
Title:  Journal of plant physiology     Volume:  -     ISSN:  1618-1328     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882059     Medline TA:  J Plant Physiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier GmbH.
Affiliation:
Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale,, viale Teresa Michel 11, 15121 Alessandria, Italy.
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