The Evolution of Crassulacean Acid Metabolism

Raven, John A.; Spicer, Robert A.

doi:10.1007/978-3-642-79060-7_25

Cited by 54 publications

(49 citation statements)

References 100 publications

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“…The C 3 and C 4 isotopic composition of carbon varies from 225% to 232% and 214% to 210%, respectively. Presently, there is no evidence that C 4 pathways existed prior to the Miocene, although inferences have been made about CAM (Raven & Spicer, 1996). This fractionation persists upward through the food chain, with incorporation of the isotopic signal into tooth enamel (e.g., Fox & Koch, 2003.…”

Section: Paleosynecology-putting Together a Communitymentioning

confidence: 99%

“…Perhaps the most explicit comparisons have been made by Feild and colleagues, who have combined studies of angiosperm phylogeny with physiology to examine likely physiological traits of evolutionarily basal angiosperms (Feild et al, 2000(Feild et al, , 2001(Feild et al, , 2003a. In the deeper past, Phillips and DiMichele (1992) considered the consequences for arborescent isoetalean lycopsids of CAM metabolic pathways, which have been found in modern isoetaleans (Keeley & Busch, 1984) and also inferred from carbon isotopic analysis (Raven & Spicer, 1996). Boyce and colleagues (Boyce & Knoll, 2002;Zwieniecki et al, 2004;Boyce, 2005) examined the physiological attributes of leaves and their xylary support systems in modern seed plants and pteridophytes as indicators of possible constraints on the evolution of leaves in primitive gymnosperms and ferns.…”

Section: Inferring Physiological Responses Of Extinct Plants and Theimentioning

confidence: 99%

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Plant Paleoecology in Deep Time¹

DiMichele¹,

Gastaldo²

2008

Annals of the Missouri Botanical Garden

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The paleoecology of plants as a modern discipline, distinct from traditional floristics or biostratigraphy, has undergone an enormous expansion in the past 20 years. In addition to baseline studies characterizing extinct plants and plant assemblages in terms of their growth habits, environmental preferences, and patterns of association, paleoecology has converged on neoecology and represents a means to extend our basic understanding of the world and to contribute to the theoretical framework of ecology, writ large. Reconstruction of whole plants, including studies of physiology and developmental biology, and analyses of biomechanics have become mainstays of autecological studies. Assemblage studies now are informed by sophisticated taphonomic models that have helped guide sampling strategies and helped with the interpretation of statistical data. Linkages of assemblage patterns in space and time with sedimentology, geochemical proxies for atmospheric composition and climate, paleosol analyses, and increasingly refined geochronological and sequence stratigraphic data have permitted paleoecologists to examine rates and extents of vegetational response to environmental change and to time intervals of quiescent climatic conditions. Studies of plant-animal interaction, explicit consideration of phylogenetic information in assessing assemblage time-space dynamics, and examination of ecological structure in terms of developing metabolic scaling theory are all having direct impact on paleoecological as well as neoecological studies. The growth of paleoecology shows no sign of diminishment-closer linkages with neoecology are needed.

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Section: Paleosynecology-putting Together a Communitymentioning

confidence: 99%

Section: Inferring Physiological Responses Of Extinct Plants and Theimentioning

confidence: 99%

Plant Paleoecology in Deep Time¹

DiMichele¹,

Gastaldo²

2008

Annals of the Missouri Botanical Garden

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“…CO 2 has been considered as the central factor and most important driving force for CAM. It has been assumed that early CAM evolution occurred during geological times when atmospheric CO 2 concentration was low (Raven and Spicer, 1996). CAM is a CO 2 -concentrating mechanism due to the much higher substrate affinity of PEPC for HCO 3 − than of the C 3 -photosynthesis/Calvin cycle carboxylase Rubisco for CO 2 .…”

Section: Effect Of Environmental Factors On Cammentioning

confidence: 99%

“…Its polyphyletic evolution was facilitated because there are no unique enzymes and metabolic reactions specifically required for CAM. CAM in the terrestrial angiosperms is thought to have diversified polyphyletically from C 3 ancestors sometime during the Miocene, possibly as a consequence of reduced atmospheric CO 2 concentration (Raven and Spicer, 1996). There is strong evidence that the evolutionary direction has been from C 3 /CAM intermediates to full CAM, paralleled by specialization to and colonization of new, increasingly arid habitats (Kluge et al, 2001).…”

Section: Cam Evolutionmentioning

confidence: 99%

Photosynthetic Carbon Metabolism: Plasticity and Evolution

Hajiboland¹

2012

Advances in Photosynthesis - Fundamental Aspects

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“…In low-light habitats or locations, the energetic cost of the CCM 3 may be significant (Raven and Spicer 1996), since ATP and NADPH production limit 4 photosynthesis at low light. However, in high-light habitats the energetic costs of the CCM are most 5 likely irrelevant -or potentially affect plant performance positively by reducing photoinhibition.…”

Section: ) Investment Of Nitrogen In Various Ccm Enzymes or Tranmentioning

confidence: 99%