English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/21122
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Contrasting responses of photosynthesis and carbon metabolism to low temperatures in tall fescue and clovers.

AuthorsPérez Pérez, Pilar ; Morcuende, Rosa ; Martín del Molino, I.; Sánchez de la Puente, L.; Martínez-Carrasco, Rafael
KeywordsPhotosynthesis
Carbon metabolism
Temperatures
Fescue
Trifolium
Issue Date2001
PublisherElsevier
CitationPhysiologia Plantarum,2001. 112, 478-486.
AbstractGrowth, photosynthesis and carbohydrate metabolism in plants of two grassland species, clover (Trifolium subterra neum L. cv. Areces and Gaitan) and tall fescue (Festuca arundinacea Schreb.), shifted from 25 to 12°C for 1 day or developed at 12°C were compared with controls kept at 25°C. Cold development produced a larger inhibition of growth in fescue than in clovers. In contrast, transferring plants from high to low temperature inhibited photosynthesis to a lesser extent in fescue than in clovers, this difference being associated with an increase in the activation state of Calvin cycle enzymes in fescue, but not in the clovers, a decreased cytosolic fructose-1,6- bisphosphatase (cFBPase, EC 3.1.3.11) activity in clovers, and an accumulation of hexose phosphates only in fescue. Development at 12°C partly relieved the inhibition of photosynthesis in clovers, in contrast with fescue, which correlated with increases in total ribulose-1,5-bisphosphate carboxylase oxygenase (Rubisco, EC 4.1.1.39) activity only in clovers, and with greater increases in total stromal FBPase (sFBPase) activity in clovers than in fescue. The activity of sucrose synthesis enzymes was increased in the two clovers and fescue developed in the cold, while carbohydrate accumulation was much bigger in cold-developed fescue than in clovers because of a 5-fold increase in fructan contents in the former. The contents of phosphorylated intermediates increased in clovers but decreased in fescue grown at 12°C. Our results suggest that restricted ribulose-1,5-bisphosphate (RuBP) regeneration limited the recovery of photosynthetic capacity in cold-developed fescue.
Publisher version (URL)http://dx.doi.org/10.1034/j.1399-3054.2001.1120404.x
URI10261/21122
DOI10.1034/j.1399-3054.2001.1120404.x
ISSN0031-9317
Appears in Collections:(IRNASA) Artículos
Files in This Item:
File Description SizeFormat 
Physiol_Plant_112_2001.pdf195,09 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.