Summary
Crops are photosynthetic organisms cultivated, or otherwise deliberately encouraged to grow, by man. The harvested products of the crops, which are used by man, include food, ranging from the photosynthetic structures themselves, directly as green vegetables and indirectly as animals which eat these structures, to organic stores and vegetative organs, seeds and fruits. Non-food uses include wood, fuel, carbon (C) sequestration, amenity and ornamentation. These uses have very different optimal outputs in terms of their C and nitrogen (N) contents, and also have variable inputs in terms of other resources (e.g. water) and criteria for sustainability (e.g. minimizing habitat degradation). In general, an optimal C and energy budget is one which involves minimal total inputs of C and N per unit of C and/or N in the harvested product; the reason that C is included among the inputs is that C fixation involves transpiratory water loss. To the extent that N in the photosynthetic apparatus enables the organisms to harvest more energy and C (and hence N), it has a catalytic role. The quantities of different N-containing components of the photosynthetic apparatus vary with genotype (via natural or artificial selection) and with acclimation of a genotype to varying environments within its lifetime, and can also be modified by genetic manipulation. The N form used by the plant, and the site of N assimilation, have a significant impact on the energetics of N assimilation, and these characteristics are amenable to agronomic and genetic manipulation. It is emphasized that negative effects on plant performance of changes in components of the N costs by the photosynthetic apparatus, which aim to maximize harvesting productivity, are sometimes not seen under optimal growth conditions. However, such negative effects can occur under suboptimal and/or varying growth conditions.
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References
Ågren GI and Bosatta E (1996) Theoretical Ecosystem Ecology: Understanding Elemental Cycles. Cambridge University Press, Cambridge
Andrews M (1986) The partitioning ofnitrate assimilation between root and shoot of higher plants. Plant Cell Environ 9: 511–519
Andrews M, Raven JA and Sprent JI (1995a) Site of nitrate assimilation in grain legumes in relation to low temperature sensitivity: An assessment. Proceedings of the 2nd European Conference on Grain Legumes, Copenhagen, 1995, pp 120–121
Andrews M, Zerihun A and Watson C (1995b) N form effects on the partitioning of dry matter between root and shoot of Phaseolus vulgaris. Proceedings of the 2nd European Conference on Grain Legumes, Copenhagen, 1995, pp 60–61
Andrews M, Sprent JI, Raven JA and Eady PE (1999) Relationships between shoot to root ratios, growth and leaf soluble protein content of Pisum sativum, Phaseolus vulgaris and Triticum aestivum under different nutrient deficiencies. Plant Cell Environ 22: 949–958
Berends F and Aerts R (1987) N-use-efficiency: A biologically meaningful definition? Funct Ecol 1: 293–298
Cohen D (1966) Optimising reproduction in a randomly varying environment. J Theor Biol 12: 119–129
Cowan IR (1986) Economics of carbon fixation in higher plants. In: Givnish TJ (ed) On the Economy of Plant Form and Function, pp 133–170. Cambridge University Press, Cambridge
Davies DD (1982) Physiological aspects of protein turnover. In: Boulter D and Parthier B (eds) Encyclopaedia of Plant Physiology (New Series) Volume 14A, pp 189–198. Springer Verlag, Berlin
Evans JR (1999) Leaf anatomy enables more equal access to light and CO2 between chloroplasts. New Phytol 143: 93–104
Evans JR and Loreto F (2000) Acquisition and diffusion of CO2 in higher plant leaves. In: Leegood R C, Sharkey T D and von Caemmerer S (eds) Photosynthesis Physiology and Metabolism, pp 321–351. Kluwer Academic Publishers, Dordrecht
Evans JR and Seemann JR (1989) The allocation of protein nitrogen in the photosynthetic apparatus: Costs, consequences and control. In: Brigg WR (ed) Photosynthesis, pp 183–205. AR Liss, New York
Evans JR and von Caemmerer S (1996) Carbon dioxide diffusion inside leaves. Plant Physiol 110: 339–346
Evans LT (ed) (1975) Crop Physiology. Cambridge University Press, Cambridge
Falkowski PG and Raven JA (1997) Aquatic Photosynthesis. Blackwell Science, Malden, MA
Fitter AH (1987) An architectural approach to the comparative ecology of plant root systems. In: Rorison IH, Grime JP, Hunt R, Hendry GAF and Lewis DH (eds) Frontiers of Comparative Plant Ecology, pp 217–233. Academic Press, London
Fitter AH (1996) Characteristics and functions of root systems. In: Waisel Y, Eshel A and Kafkafi U (eds) Plant Roots: The Hidden Half, Second Edition, pp 1–20. Marcel Dekker, New York
Gillon JS and Yakir D (2000) Internal conductance to CO2 diffusion and C18OO discrimination in C3 leave. Plant Physiol 123: 201–213
Gnaiger E and Bitterlich G (1984) Proximate biochemical composition and caloric content calculated from elemental CHN analysis: A stoichiometric concept. Oecologia 62: 289–298
Grusak MA and Dellapenna D (1999) Improving the nutrient composition of plants to enhance human nutrition and health. Annu Rev Plant Physiol Plant Mol Biol 50: 133–161
Handley LL, Mehvan M, Moore CA and Cooper WJ (1989) Nitrogen-to-protein conversion factors for two tropical C4 grasses, Brachiaria mutica (Forsk.) Stopf. and Pennisetum purpureum Schumach. Biotropica 21: 88–90
Horváth E M, Peter S, Joët T, Rumeau D, Cournac L, Horváth GV, Kavanagh TA, Schäfer C, Peltier G and Medgyesy P (2000) Targeted inactivation of the plastid ndhB gene in tobacco results in an enhanced sensitivity of photosynthesis to moderate stomatal closure. Plant Physiol 123: 1337–1349
Huffaker RC and Peterson LW (1974) Protein turnover in plants and possible means of its regulation. Annu Rev Plant Physiol 25: 363–392
Hurry V, Anderson JM, Badger MR and Price GD (1996) Reduced levels of cytochrome b6-f in transgenic tobacco increases the excitation pressure on photosystem II without increasing the sensitivity to photoinhibition in vivo. Photosynth Res 50:159–169
Kraemer GP and Chapman DJ (1991a) Biomechanics and alginic acid composition during hydrodynamic adaptation by Egregia menziesii (Phaeophyta) juveniles. J Phycol 27: 47–53
Kraemer GP and Chapman DJ (1991b) Effects of tensile force and nutrient availability on carbon uptake and cell wall synthesis in blades of juvenile Egregia menziesii (Turn) Aresch. (Phaeophyta). J Exp Mar Biol Ecol 149: 267–277
Krieger-Liszkay A, Kienzler K and Johnson GN (2000) Inhibition of electron transport at the cytochrome b6-f complex protects photosystem II from photoinhibition. FEBS Lett 486: 191–194
Libert B and Creed C (1985) Oxalate content of seventy-eight rhubarb cultivars and its relation to some other characteristics. J Hort Sci 60: 257–261
Long SP, Humphries S and Falkowski PG (1994) Photoinhibition of photosynthesis in nature. Annu Rev Plant Physiol Plant Mol Biol 45: 633–662
Majeau N, Arnoldo M and Coleman JR (1994) Modification of carbonic anhydrase activity by antisense and overexpression constructs in transgenic tobacco. Plant Mol Biol 25: 377–385
Marriott DJ, Stirling CM and Farrar J (2001) Constraints to growth of annual nettle (Urtica wens) in an elevated CO2 atmosphere: Decreased leaf area ratio and tissue N cannot be explained by ontogenetic drift or mineral N supply. Physiol Plant 111: 23–32
Marshall HL, Geider RJ and Flynn KJ (2000) A mechanistic model of photoinhibition. New Phytol 145: 347–360
Meziane D and Shipley B (1999) Interacting determinants of specific leaf area in 22 herbaceous species: Effects of irradiance and nutrient availability. Plant Cell Environ 22: 447–459
Mott KA and Woodrow IE (2000) Modeling the role of Rubisco activase in limiting non-steady-state photosynthesis. J Exp Bot 51: 399–406
Niklas KS (1992) Plant Biomechanics. An Engineering Approach to Plant Form and Function. The University of Chicago Press, Chicago
Niyogi KK (1999) Photoprotection revisited: Genetic and molecular approaches. Annu Rev Plant Physiol Plant Mol Biol 50: 333–359
Penning de Vries FWT (1975) The cost of maintenance processes in plant cells. Ann Bot 39: 77–92
Price GD, von Caemmerer S, Evans JR, Yu J-W, Oja V, Kell P, Harrison K, Gallagher A and Badger MR (1994) Specific reduction of chloroplast carbonic anhydrase activity by antisense RNA activity in transgenic tobacco plants has minor effects on photosynthetic CO2 assimilation. Planta 193: 331–340
Raven JA (1984a) Energetics and Transport in Aquatic Plants. AR Liss, New York
Raven JA (1984b) A cost-benefit analysis of photon absorption by photosynthetic unicells. New Phytol 98: 259–276
Raven JA (1985) Regulation of pH and generation of osmolarity in vascular land plants: Costs and benefits in relation to efficiency of use of water, energy and nitrogen. New Phytol 101: 25–77
Raven JA (1989) Fight or flight: The economics of repair and avoidance of photoinhibition of photosynthesis. Funct Ecol 3: 5–19
Raven JA (1994) The cost of photo inhibition to plant communities. In Baker NR and Bowyer JR (eds) Photoinhibition of Photosynthesis, pp 449–464. Bioscientific Publishers, Oxford
Raven JA and Edwards D (2001) Roots: Their evolutionary origins and biogeochemical significance. J Exp Bot 52: 381–401
Raven JA and Glidewell SM (1981) Processes limiting photosynthetic conductance. In: Johnston CB (ed) Physiological Processes Limiting Plant Productivity, pp 109–136. Butterworths, London
Raven JA, Wollenweber B and Handley LL (1992a) Ammonia and ammonium fluxes between photolithotrophs and the environment in relation to the global nitrogen cycle. New Phytol 121: 5–18
Raven JA, Wollenweber B and Handley LL (1992b) A comparison of ammonium and nitrate as nitrogen sources for photolithotrophs. New Phytol 121: 19–32
Raven JA, Johnston A M, Kübler JE and Parsons R (1994) The influence of natural and experimental high O2 concentrations on O2-evolving photolithotrophs. Biol Rev 69: 61–94
Raven JA, Evans MCW and Korb RE (1999) The role of trace metals in photosynthetic electron transport in O2-evolving organisms. Photosynth Res 60: 111–149
Raven JA, Kübler JE and Beardall J (2000) Put out the light, and then put out the light. J Mar Biol Assocn UK 80: 1–25
Robinson D (1996) Resource capture by localized root proliferation: Why do plants bother? Ann Bot 77: 179–185
Robinson D, Hodge A, Griffiths BS and Fitter AH (1998) Plant root proliferation in nitrogen-rich patches confers competitive advantages. Proc Roy Soc Lond B 266: 431–435
Ruuska SA, Badger MR, Andrews JT and von Caemmerer S (2000) Photosynthetic electron sinks in transgenic tobacco with reduced amounts of Rubisco: Little evidence for significant Mehler reaction. J Exp Bot 51: 357–368
Simpson E, Cooke RJ and Davies D (1981) Measurements of protein degradation in leaves of Zea mays using [3H] acetic anhydride and tritiated water. Plant Physiol 67: 1214–1219
Steingröver E (1986) Nitrate accumulation in spinach: uptake and reduction of nitrate during a dark or ‘low light’ night period. Plant Soil 91: 429–432
Stitt M and Schultze E-D (1994) Plant growth, storage and resource allocation: From flux control in a metabolic chain to the whole-plant level. In: Schultze E-D (ed) Flux Control in Biological Systems from Enzymes to Populations and Ecosystems, pp 57–118. Academic Press, San Diego
Sultan SE (2000) Phenotypic plasticity for plant development, function and life history. Trends Plant Sci 5: 537–542
Williams TG, Flanagan LB and Coleman JR (1996) Photosynthetic gas exchange and discrimination against 13CO2 and C18O16O in tobacco plants modified by an antisense construct to have low chloroplastic carbonic anhydrase. Plant Physiol 112: 319–326
Yin Z-H and Raven JA (1998) Influences of nitrogen sources on nitrogen-and water-use efficiency, and carbon isotope discrimination, in C3Triticum aestivum and C4Zea mays. Planta 205: 574–580
Zerihun A and BassiriRad H (2000) Photosynthesis of Helianthus annuus does not acclimate to elevated CO2 regardless of N supply. Plant Physiol Biochem 38: 897–903
Zhang H and Forde BG (1998) An Arabidopsis MADS-box gene that controls nutrient-induced changes in root architecture. Science 279: 407–409
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Raven, J.A., Handley, L.L., Andrews, M. (2002). Optimizing Carbon-Nitrogen Budgets: Perspectives for Crop Improvement. In: Foyer, C.H., Noctor, G. (eds) Photosynthetic Nitrogen Assimilation and Associated Carbon and Respiratory Metabolism. Advances in Photosynthesis and Respiration, vol 12. Springer, Dordrecht. https://doi.org/10.1007/0-306-48138-3_16
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DOI: https://doi.org/10.1007/0-306-48138-3_16
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