R F Sage
Affiliation: University of Toronto
- Effects of low atmospheric CO(2) on plants: more than a thing of the pastR F Sage
Department of Botany, University of Toronto, Ontario, M5S 3B2, Toronto, Canada
Trends Plant Sci 6:18-24. 2001..Adaptations to low CO(2) might still exist in plants and might constrain responses to a rising CO(2) concentration...
- Variation in the k(cat) of Rubisco in C(3) and C(4) plants and some implications for photosynthetic performance at high and low temperatureRowan F Sage
Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
J Exp Bot 53:609-20. 2002..Because k(cat) and K(m) vary proportionally, the low k(cat) indicates that Rubisco has been modified in a manner that reduces K(m) and thus increases the affinity for CO(2) in C(3) species from warm climates...
- C(4) photosynthesis in terrestrial plants does not require Kranz anatomyRowan F Sage
Deparment of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S3B2
Trends Plant Sci 7:283-5. 2002..These discoveries provide new inspiration for efforts to convert C(3) crops into C(4) plants because the anatomical changes required for C(4) photosynthesis might be less stringent than previously thought...
- Is C4 photosynthesis less phenotypically plastic than C3 photosynthesis?Rowan F Sage
Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON M5S3B2 Canada
J Exp Bot 57:303-17. 2006..In total, the evidence indicates that C4 photosynthesis is less phenotypically plastic than C3 photosynthesis, and this may contribute to the more restricted ecological and geographical distribution of C4 plants across the Earth...
- Photorespiratory compensation: a driver for biological diversityR F Sage
Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
Plant Biol (Stuttg) 15:624-38. 2013..This may have allowed many C3 species to withstand severe competition from C4 plants in low CO2 atmospheres of recent geological time, thereby preserving some of the Earth's floristic diversity that accumulated over millions of years...
- The response of the high altitude C(4) grass Muhlenbergia montana (Nutt.) A.S. Hitchc. to long- and short-term chillingJ Pittermann
Department of Botany, University of Toronto, 25 Willcocks St, Toronto, Ontario, Canada M5S3B2
J Exp Bot 52:829-38. 2001..The inability to overcome the Rubisco limitation at low temperature may be an inherent limitation restricting C(4) photosynthetic performance in cooler climates...
- C4 grasses in boreal fens: their occurrence in relation to microsite characteristicsDavid S Kubien
Dept of Botany, University of Toronto, 25 Willcocks St, M5S 3B2, Toronto, ON, Canada
Oecologia 137:330-7. 2003..In these cool northern climates M. glomerata apparently persists because sufficient periods of temperatures favourable to C(4) photosynthesis occur, but this persistence likely requires some factor that suppresses the woody vegetation...
- Photosynthetic pathway influences xylem structure and function in Flaveria (Asteraceae)Ferit Kocacinar
Faculty of Forestry, Kahramanmaras Sutcu Imam University, Merkez 46100 Kahramanmaras, Turkey
Plant Cell Environ 31:1363-76. 2008..C(3)-C(4) species exhibited reduced K(L) but little change in WUE compared to C(3) species, indicating that some reduction in hydraulic efficiency preceded increases in WUE...
- Thermal acclimation of photosynthesis in black spruce [Picea mariana (Mill.) B.S.P.]Danielle A Way
Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada
Plant Cell Environ 31:1250-62. 2008..At 40 degrees C, photosynthesis in LT seedlings might be limited by Rubisco activase capacity, while in HT seedlings, acclimation removed this limitation...
- Evolutionary physiology: the extent of C4 and CAM photosynthesis in the genera Anacampseros and Grahamia of the PortulacaceaeLonnie J Guralnick
Division of Natural Science and Mathematics, Western Oregon University, Monmouth, OR 97361, USA
J Exp Bot 59:1735-42. 2008..This report suggests there may be only one clade which contains C(4) photosynthetic members with CAM-like characteristics...
- Rubisco, Rubisco activase, and global climate changeRowan F Sage
Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada M5S 3B2
J Exp Bot 59:1581-95. 2008..Because black spruce is the dominant species in the boreal forest of North America, Rubisco activase may be an unusually important factor determining the response of the boreal biome to climate change...
- Functional constraints of CAM leaf anatomy: tight cell packing is associated with increased CAM function across a gradient of CAM expressionElizabeth A Nelson
Faculty of Forestry, University of Toronto, 33 Willcocks Street, Toronto ON, M5S 3B3, Canada
J Exp Bot 59:1841-50. 2008..However, reduced IAS and L(mes)/area limit C(3) photosynthesis, potentially mediating a bimodal distribution of weak and strong CAM species with high and low IAS and L(mes)/area values, respectively...
- The temperature response of photosynthesis in tobacco with reduced amounts of RubiscoDavid S Kubien
Department of Biology, University of New Brunswick, 10 Bailey Dr, Fredericton, NB, Canada
Plant Cell Environ 31:407-18. 2008..Our observations are consistent with the hypothesis that the high temperature decline in A in the WT is because of an RuBP regeneration limitation, rather than the capacity of Rubisco activase to maintain high Rubisco activation state...
- Temperature response of photosynthesis in transgenic rice transformed with 'sense' or 'antisense' rbcSAmane Makino
Graduate School of Agricultural Science, Tohoku University, 1 1 Tsutsumidori Amamiyamachi, Sendai, 981 8555 Japan
Plant Cell Physiol 48:1472-83. 2007..We discuss the possibility that the decline in Rubisco activation at intermediate and high temperatures is part of a regulated response to a limitation in other photosynthetic processes...
- The functional significance of C3-C4 intermediate traits in Heliotropium L. (Boraginaceae): gas exchange perspectivesPatrick J Vogan
Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks St, Toronto, Ontario M5S 3B2, Canada
Plant Cell Environ 30:1337-45. 2007..The presence of multiple species displaying C3-C4 intermediate traits indicates that Heliotropium could be a valuable new model for studying the evolutionary transition from C3 to C4 photosynthesis...
- The temperature response of C(3) and C(4) photosynthesisRowan F Sage
Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON M5S3B2 Canada
Plant Cell Environ 30:1086-106. 2007..Limitations in electron transport and Rubisco activase capacity should be more common in the warmer, high CO(2) conditions expected by the end of the century...
- C4 photosynthesis at low temperature. A study using transgenic plants with reduced amounts of RubiscoDavid S Kubien
Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
Plant Physiol 132:1577-85. 2003..On the basis of these results, we propose that the lack of C(4) success in cool climates reflects a constraint imposed by having less Rubisco than their C(3) competitors...
- The regulation of Rubisco activity in response to variation in temperature and atmospheric CO2 partial pressure in sweet potatoYan Ping Cen
Department of Botany, University of Toronto, Ontario, Canada
Plant Physiol 139:979-90. 2005..At low CO(2), where Rubisco capacity was predicted to limit photosynthesis, full activation of Rubisco was observed at all measurement temperatures...
- Photosynthetic pathway alters hydraulic structure and function in woody plantsFerit Kocacinar
Department of Botany, University of Toronto, 25 Willcocks St, M5S3B2, Toronto, ON, Canada
Oecologia 139:214-23. 2004..By establishing a link between C(4) photosynthesis and xylem structure, this study indicates that other phenomena that affect WUE, such as atmospheric CO(2) variation, may also affect the evolution of wood structure and function...
- Cleome, a genus closely related to Arabidopsis, contains species spanning a developmental progression from C(3) to C(4) photosynthesisDiana M Marshall
Department of Plant Sciences, Downing Street, University of Cambridge, Cambridge, UK
Plant J 51:886-96. 2007....