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CO(2) Inhibits Respiration in Leaves of Rumex crispus L.
MedLine Citation:
PMID:  16668707     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Curly dock (Rumex crispus L.) was grown from seed in a glasshouse at an ambient CO(2) partial pressure of about 35 pascals. Apparent respiration rate (CO(2) efflux in the dark) of expanded leaves was then measured at ambient CO(2) partial pressure of 5 to 95 pascals. Calculated intercellular CO(2) partial pressure was proportional to ambient CO(2) partial pressure in these short-term experiments. The CO(2) level strongly affected apparent respiration rate: a doubling of the partial pressure of CO(2) typically inhibited respiration by 25 to 30%, whereas a decrease in CO(2) elicited a corresponding increase in respiration. These responses were readily reversible. A flexible, sensitive regulatory interaction between CO(2) (a byproduct of respiration) and some component(s) of heterotrophic metabolism is indicated.
Authors:
J S Amthor; G W Koch; A J Bloom
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plant physiology     Volume:  98     ISSN:  0032-0889     ISO Abbreviation:  Plant Physiol.     Publication Date:  1992 Feb 
Date Detail:
Created Date:  2010-06-29     Completed Date:  2010-06-29     Revised Date:  2010-09-15    
Medline Journal Info:
Nlm Unique ID:  0401224     Medline TA:  Plant Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  757-60     Citation Subset:  -    
Affiliation:
Department of Agronomy and Range Science, University of California, Davis, California 95616.
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