Abstract
THE leaves of Agave americana are remarkable for their ability to assimilate CO2 in the dark. The maximum dark influx of CO2 (from normal air of about 320 v.p.m.) that we1 have observed is 11.8 mg of CO2 dm−2 h−1. This ability, also possessed by some other succulent plants such as the Crassulaceae, is accompanied by a night-time opening of stomata2—the so-called “inverted stomatal rhythm”.
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NEALES, T. Effect of Ambient Carbon Dioxide Concentration on the Rate of Transpiration of Agave americana in the Dark. Nature 228, 880–882 (1970). https://doi.org/10.1038/228880b0
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DOI: https://doi.org/10.1038/228880b0
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