Abstract
Stomatal mechanism as the basis of evolution of crassulacean acid metabolism
Highlights
KEELEY et al 1 have demonstrated clearly that the rare pteridophyte, Stylites andicola (Isoetaceae), exhibits a variant of photosynthetic carbon metabolism which has obvious affinities with crassulacean acid metabolism (CAM)
Stylites evolved from ancestors that did possess stomata and it does not itself possess these structures, it may use pathways derived from guard cell metabolism
W. COCKBURN Department of Botany, University of Leicester, Leicester LEI 7RH, UK
Summary
KEELEY et al 1 have demonstrated clearly that the rare pteridophyte, Stylites andicola (Isoetaceae), exhibits a variant of photosynthetic carbon metabolism which has obvious affinities with crassulacean acid metabolism (CAM).
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