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Environmental and physiological determinants of carbon isotope discrimination in terrestrial plants.
- L. Cernusak, N. Ubierna, K. Winter, J. Holtum, J. Marshall, G. Farquhar
- Chemistry, Medicine
- The New phytologist
- 1 December 2013
The effective use of Δ across its full range of applications will require a holistic view of the interplay between environmental control and physiological modulation of the environmental signal. Expand
Phylogeny, adaptive radiation, and historical biogeography in Bromeliaceae: insights from an eight-locus plastid phylogeny.
A bromeliad phylogeny based on eight plastid regions is used to analyze relationships within the family, test a new, eight-subfamily classification, infer the chronology of b romeliad evolution and invasion of different regions, and provide the basis for future analyses of trait evolution and rates of diversification. Expand
Multiple origins of crassulacean acid metabolism and the epiphytic habit in the Neotropical family Bromeliaceae.
- D. Crayn, K. Winter, J. Smith
- Biology, Medicine
- Proceedings of the National Academy of Sciences…
- 9 March 2004
A phylogenetic analysis of nucleotide sequences for 51 bromeliad taxa indicated that the last common ancestor of Bromeliaceae was a terrestrial C(3) mesophyte, probably adapted to moist, exposed, nutrient-poor habitats. Expand
Adaptive radiation, correlated and contingent evolution, and net species diversification in Bromeliaceae.
- T. Givnish, M. Barfuss, +16 authors K. Sytsma
- Biology, Medicine
- Molecular phylogenetics and evolution
- 1 February 2014
This study is among the first to test a priori hypotheses about the relationships among phylogeny, phenotypic evolution, geographic spread, and net species diversification, and to argue for causality to flow from functional diversity to spatial expansion to species diversity. Expand
Photoinhibition and zeaxanthin formation in intact leaves : a possible role of the xanthophyll cycle in the dissipation of excess light energy.
Comparative studies of chlorophyll a fluorescence and of the pigment composition of leaves suggest a specific role of zeaxanthin, a carotenoid formed in the xanthophyll cycle, in protecting the photosynthetic apparatus against the adverse effects of excessive light. Expand
Isoprene Increases Thermotolerance of Isoprene-Emitting Species
It is theorized that isoprene functions by enhancing hydrophobic interactions in membranes by increasing their thermotolerance. Expand
Evolution along the crassulacean acid metabolism continuum
- K. Silvera, K. M. Neubig, W. M. Whitten, N. H. Williams, K. Winter, J. Cushman
- 12 November 2010
This review focuses on five main topics: (1) the permutations and plasticity of CAM, (2) the requirements for CAM evolution, (3) the drivers of CAM evolution; (4) the prevalence and taxonomic distribution of CAM among vascular plants with emphasis on Orchidaceae; and (5)themolecular underpinning sofCAMevolution includingcircadianclockregulation of gene expression. Expand
How Closely Do the δ13C Values of Crassulacean Acid Metabolism Plants Reflect the Proportion of CO2 Fixed during Day and Night?1
Extrapolation of the observations to plants previously surveyed under natural conditions suggests that the most commonly expressed version of CAM in the field, “the typical CAM plant,” involves plants that gain about 71% to 77% of their carbon by dark fixation, and that the isotopic signals of plants that obtain one-third or less of theircarbon in the dark may be confused with C3 plants when identified on the basis of carbon isotope content alone. Expand
Distribution of crassulacean acid metabolism in orchids of Panama: evidence of selection for weak and strong modes.
Data suggest that among CAM orchids, there may be preferential selection for species to exhibit strong CAM or weak CAM, rather than intermediate metabolism. Expand
Crassulacean acid metabolism in australian vascular epiphytes and some related species
It is concluded that CAM is widespread in Australian epiphytes, most prevalent in species found in exposed microhabitats where the growing conditions are characterised by relatively high light intensities and short but frequent periods of water stress. Expand