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. 1988 May;87(1):83–88. doi: 10.1104/pp.87.1.83

A Mutant of Arabidopsis thaliana that Exhibits Chlorosis in Air but Not in Atmospheres Enriched in CO21

Nancy N Artus 1, Chris Somerville 1
PMCID: PMC1054703  PMID: 16666132

Abstract

A mutant of Arabidopsis thaliana (L.) Heynh. which requires a high concentration (2% by volume) of atmospheric CO2 for growth has been isolated. Unlike previous mutants of this type, this line does not have any apparent defect in photosynthetic CO2-fixation, photorespiration, or photosynthetic electron transport. The mutant is abnormally susceptible to pigment bleaching in air but not in 2% CO2. The presence of normal or above-normal levels of antioxidants, carotenoids, and enzymes involved in reactive oxygen detoxification suggests that the mutant is equipped to detoxify activated oxygen species. Although it was not possible to establish a biochemical basis for the lesion, the properties of the mutant suggest the existence of a previously unidentified role for CO2.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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