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Plant respiration and elevated atmospheric CO2 concentration: cellular responses and global significance.

Authors
  • Gonzalez-Meler, Miquel A
  • Taneva, Lina
  • Trueman, Rebecca J
Type
Published Article
Journal
Annals of botany
Publication Date
Nov 01, 2004
Volume
94
Issue
5
Pages
647–656
Identifiers
PMID: 15355864
Source
Medline
License
Unknown

Abstract

Contrary to what was previously thought, specific respiration rates are generally not reduced when plants are grown at elevated [CO2]. However, whole ecosystem studies show that canopy respiration does not increase proportionally to increases in biomass in response to elevated [CO2], although a larger proportion of respiration takes place in the root system. Fundamental information is still lacking on how respiration and the processes supported by it are physiologically controlled, thereby preventing sound interpretations of what seem to be species-specific responses of respiration to elevated [CO2]. Therefore the role of plant respiration in augmenting the sink capacity of terrestrial ecosystems is still uncertain.

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