Document Detail

The state of activation of ribulose-1,5-bisphosphate carboxylase in wheat leaves.
MedLine Citation:
PMID:  24435486     Owner:  NLM     Status:  In-Data-Review    
In light and in darkness, exposure of leaf segments to CO2-free atmospheres caused a marked reduction in extractable RuBP carboxylase activity. By contrast, darkness caused a relatively small decrease in carboxylase activity in extracts from leaf segments kept in air containing CO2. Recovery of carboxylase activity in leaves during illumination in air after exposure to CO2-free conditions paralleled recovery of capacity for photosynthesis; in darkness recovery of carboxylase activity in leaves was slower than in the light. Extracts from leaves exposed to CO2-free conditions recovered activity when provided with CO2 and Mg(2+); there were clearly, however, substances in the extracts that modified the activity achieved and caused anomalous decreases and increases with time after extraction. Studies of the effect of orthophosphate on the activity of purified wheat carboxylase in vitro were consistent with the view that many of the effects observed on the activity of crude leaf extracts were due to orthophosphate content.
F A Boyle; A J Keys
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Photosynthesis research     Volume:  11     ISSN:  0166-8595     ISO Abbreviation:  Photosyn. Res.     Publication Date:  1987 Jan 
Date Detail:
Created Date:  2014-01-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954728     Medline TA:  Photosynth Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  97-108     Citation Subset:  -    
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