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Grams, T.E.E. ; Herzog, B.* ; Lüttge, U.*

Are there species in the genus Clusia with obligate C3-photosynthesis?

J. Plant Physiol. 152, 1-9 (1998)
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Most of the species in the genus Clusia are very flexible in their photosynthetic pathway, and are C-3-photosynthesis/Crassulacean acid metabolism (CAM) intermediate species; therefore, the identification and clear assignment of Clusia-species to C-3- or CAM-pathways is difficult. We made an attempt to characterize obligate C-3-photosynthesis species within that genus. Therefore, we selected five species of the family Clusiacea (four of the genus Clusia and one of the genus Oedematopus) on the basis of their low leaf succulence as potential obligate C-3-photosynthesis species. All of them showed a Cs-photosynthesis pattern of gas exchange under well-watered conditions and their delta(13)C-values were also found to be in the range of obligate C-3-photosynthesis plants. Under drought stress two of them (C. articulata and C. cruiva) proved to be C-3-photosynthesis/CAM intermediate species, while C. parviflora, C, multiflora and most likely O. mirandensis did not show any nocturnal CO2-fixation. However, in C. parviflora and O. mirandensis some nighttime accumulation of malate by internal CO2-recycling might occur. So far, C. multiflora seems to be the only known Clusia species with neither nocturnal net CO2-uptake nor malate accumulation.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter C-3-photosynthesis; Clusia; Crassulacean acid metabolism (CAM); drought stress; malate and citrate accumulation; CRASSULACEAN ACID METABOLISM; CAM-TREE CLUSIA; GAS-EXCHANGE; MINOR L; TROPICAL TREES; WATER-STRESS; LIGHT LEVELS; C3-CAM TREE; ACCUMULATION; PHOTOSYNTHESIS
ISSN (print) / ISBN 0176-1617
e-ISSN 1618-1328
Zeitschrift Journal of Plant Physiology
Quellenangaben Band: 152, Heft: 1, Seiten: 1-9 Artikelnummer: , Supplement: ,
Verlag Elsevier
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Environmental Simulation (EUS)