The photosynthetic plasticity of crassulacean acid metabolism : an evolutionary innovation for sustainable productivity in a changing world

© 2011 The Authors. New Phytologist © 2011 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 191(2011), 3 vom: 01. Aug., Seite 619-633
1. Verfasser: Borland, Anne M (VerfasserIn)
Weitere Verfasser: Barrera Zambrano, V Andrea, Ceusters, Johan, Shorrock, Katherine
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Review Water 059QF0KO0R Carbon Dioxide 142M471B3J Phosphoenolpyruvate Carboxylase EC 4.1.1.31 Ribulose-Bisphosphate Carboxylase EC 4.1.1.39
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100 1 |a Borland, Anne M  |e verfasserin  |4 aut 
245 1 4 |a The photosynthetic plasticity of crassulacean acid metabolism  |b an evolutionary innovation for sustainable productivity in a changing world 
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520 |a © 2011 The Authors. New Phytologist © 2011 New Phytologist Trust. 
520 |a SUMMARY: The photosynthetic specialization of crassulacean acid metabolism (CAM) has evolved many times in response to selective pressures imposed by water limitation. Integration of circadian and metabolite control over nocturnal C₄ and daytime C₃ carboxylation processes in CAM plants provides plasticity for optimizing carbon gain and water use by extending or curtailing the period of net CO₂ uptake over any 24-h period. Photosynthetic plasticity underpins the ecological diversity of CAM species and contributes to the potential for high biomass production in water-limited habitats. Perceived evolutionary constraints on the dynamic range of CO₂ acquisition strategies in CAM species can be reconciled with functional anatomical requirements and the metabolic costs of maintaining the enzymatic machinery required for C₃ and C₄ carboxylation processes. Succulence is highlighted as a key trait for maximizing biomass productivity in water-limited habitats by serving to buffer water availability, by maximizing the magnitude of nocturnal CO₂ uptake and by extending the duration of C₄ carboxylation beyond the night period. Examples are discussed where an understanding of the diverse metabolic and ecological manifestations of CAM can be exploited for the sustainable productivity of economically and ecologically important species 
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700 1 |a Barrera Zambrano, V Andrea  |e verfasserin  |4 aut 
700 1 |a Ceusters, Johan  |e verfasserin  |4 aut 
700 1 |a Shorrock, Katherine  |e verfasserin  |4 aut 
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