Abstract
Cassava, bean and maize leaves were fed with14CO2 in light and the primary products of photosynthesis identified 5 and 10 seconds after assimilation. In maize, approximately three quarters of the labelled carbon was incorporated in C4 acids, in beans about two thirds in PGA, and in cassava approximately 40–60% in C4 acids with 30–50% in PGA. These data indicate that cassava possesses the C4 photosynthetic cycle, however due to the lack of typical Kranz anatomy appreciable carbon assimilation takes place directly through the Calvin-Benson-Bassham cycle.
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References
Berry J and Bjorkman O (1980) Photosynthetic response and adaptation to temperature in higher plants. Annu Rev Plant Physiol 31:491–543
Bjorkman O, Badger MR and Armond PA (1980) Response and adaptation of photosynthesis to high temperatures. In: Turner NC and Kramer PJ (eds) Adaptation of Plants to Water and High Temperature Stress, pp. 233–249. New York: John Wiley & Sons
Black CC (1973) Photosynthetic carbon fixation in relation to net CO2 uptake. Annu Rev Plant Physiol 24:253–286
Cock JH, Porto MCM and El-Sharkawy MA (1985) Water use efficiency of cassava III. Influence of air humidity and water stress on gas exchange of field grown cassava. Crop Sci 25:265–272
Edwards GE and Huber SC (1981) The C4 pathway. In: Hatch MD and Boardman NK (eds) The Biochemistry of Plants. Vol. 8, Photosynthesis, pp. 237–281. New York: Academic Press
El-Sharkawy MA and Cock JH (1987) C3-C4 intermediate photosynthetic Characteristics of Cassava (Manihot esculenta Crantz). I. Gas exchange. Photosynth Res 12:219–235
El-Sharkawy MA, Cock JH and Held AA (1984) Photosynthetic responses of cassava cultivars (Manihot eculenta Crantz) from different habitats to temperature. Photosynth Res 5:243–250
El-Sharkawy MA, Loomis RS and Williams WA (1968) Photosynthetic and respiratory exchanges of carbon dioxide by leaves of the grain Amaranth. J App Eol 5:243–251
El-Sharkawy MA (1965) Factors limiting photosynthetic rates of different plant species. Ph.D. Dissertation, The University of Arizona, Tucson, USA
El-Sharkawy MA and Hesketh JD (1964) Effects of temperature and water deficit on leaf photosynthetic rates of different species. Crop Sci 4:514–518
Hatch MD (1976) The C4 pathway of photosynthesis: mechanism and function. In: Burris RH and Black CC (eds) CO2 Metabolism and Plant Productivity, pp. 59–81. Baltimore: University Park Press
Kelly GJ, Latzko E and Gibbs M (1976) Regulatory aspects of photosynthetic carbon metabolism. Annu Rev Plant Physiol 27:181–205
Kennedy RA and Laetsch WM (1973) Relationship between leaf development and primary photosynthetic products in the C4 Portulaca oleraceae. Planta 115:113–124
Kortschak HP, Hartt CE and Burr GO (1965) Carbon dioxide fixation in sugarcane leaves. Plant Physiol 40(2):209–213
Laetsch WM (1974) The C4 syndrome: a structural analysis. Annu Rev Plant Physiol 25:27–52
Ludlow MW and Wilson GL (1971) Photosynthesis of tropical pasture plants. I. Illumination, carbon dioxide concentration, leaf temperature, and leaf-air vapour pressure difference. Aust J Biol Sci 24:449–470
Murata Y and Iyama J (1963) Studies on the photosynthesis of forage crops. II. Influence of air temperature upon photosynthesis of some forage and grain crops. Proc Crop Sci Soc Japan 31:315–322
Nobel PS (1980) Leaf anatomy and water use efficiency. In: Turner NC and Kramer PJ (eds) Adaptation of Plants to Water and High Temperature Stress, pp. 43–55. New York: John Wiley & Sons
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Cock, J.H., Riaño, N.M., El-Sharkawy, M.A. et al. C3-C4 intermediate photosynthetic characteristics of cassava (Manihot esculenta Crantz). Photosynth Res 12, 237–241 (1987). https://doi.org/10.1007/BF00055123
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DOI: https://doi.org/10.1007/BF00055123