Diversity and plasticity of C4 photosynthesis in Eleocharis (Cyperaceae)

Functional Plant Biology : FPB
Lesley R MurphyMaurice S B Ku

Abstract

Eleocharis contains many amphibious species, and displays diversity of photosynthetic mechanism (C3, C4 or C3-C4 intermediates). A unique feature of Eleocharis is the plasticity in the photosynthetic mechanism of some species in response to the environment. In this study, we have examined the culm anatomy and photosynthetic property of several Eleocharis species grown terrestrially and the changes in the newly produced culms over a short period time frame after switching from terrestrial to submerged condition. Eleocharis baldwinii (Torrey) Chapman is C4-like in terrestrial habitat, exhibiting O2 inhibition of photosynthesis with Rubisco expressed in both mesophyll and bundle sheath cells and PEPC strictly in the mesophyll cells, but switches to C3-C4 intermediacy when submerged. In addition to Eleocharis vivipara Link type 1 (which switches from C4-like to C3), two other photosynthetic types examined in this study were shown to have different responses to growth in either terrestrial or submerged conditions. E. vivipara type 2 is a typical C4 plant in the terrestrial habitat, but becomes a C3-C4 intermediate under submerged conditions. Further, terrestrially, E. vivipara type 3 is a C3-C4 intermediate, but when submerged the δ...Continue Reading

References

Sep 1, 1988·Proceedings of the National Academy of Sciences of the United States of America·O UenoS Miyachi
Oct 1, 1977·Plant Physiology·L L KnudsonG E Edwards
Jun 1, 1991·Plant Physiology·M S KuG E Edwards
Dec 1, 1974·Planta·M GutierrezG E Edwards

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Citations

May 7, 2014·Journal of Experimental Botany·Marjorie R LundgrenPascal-Antoine Christin
Sep 30, 2014·The New Phytologist·Pascal-Antoine Christin, Colin P Osborne
Dec 3, 2015·Anais Da Academia Brasileira De Ciências·Shirley MartinsVera L Scatena
May 16, 2017·Journal of Experimental Botany·John A RavenPatricia Sánchez-Baracaldo
Jun 25, 2017·Journal of Experimental Botany·Stephen C Maberly, Brigitte Gontero
May 23, 2009·Molecular Biology and Evolution·Guillaume BesnardPascal-Antoine Christin

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