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  • Print publication year: 2010
  • Online publication date: May 2010

7 - Respiration from roots and the mycorrhizosphere

Summary

INTRODUCTION

The largest flux in the global carbon cycle is the uptake of CO2 by plants as photosynthesis. Estimates of gross primary production (GPP), or total amount of CO2 assimilated by terrestrial plants, range between about 109 and 120 Pg C per year at the global scale (Schlesinger, 1997; Zhao et al., 2005). Except for carbon that remains stored in passive organic matter pools, as fossil fuel, and an estimated 0.2 Pg C per year sedimenting on the ocean floors, assimilated carbon is eventually returned to the atmosphere by respiration, either by plants or by heterotrophic organisms. The time between the fixation of a carbon atom by the plant and its conversion back to CO2 is extremely variable, ranging between a few hours and thousands of years. How long it remains part of organic compounds will depend on its turnover within the plant and, eventually, as part of soil organic matter.

Carbon assimilated by plants is translocated to plant organs where it can be used as building material for structural biomass, for storage or as substrate for respiration. Carbon imported into roots can also be exudated or transferred to symbionts such as mycorrhizal fungi (Farrar, 1999). The amount of assimilated carbon used for each purpose will depend on the plant's requirements, which are further determined by plant and environmental factors.

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REFERENCES
Aber, J. D., Melillo, J. M., Nadelhoffer, K. J., McClaugherty, C. A. and Pastor, J. (1985) Fine root turnover in forest ecosystems in relation to quantity and form of nitrogen availability: a comparison of two methods. Oecologia, 66, 317–21.
Alberton, O., Kuyper, T. W. and Gorissen, A. (2005) Taking mycocentrism seriously: mycorrhizal fungal and plant responses to elevated CO2. New Phytologist, 167, 859–68.
Amthor, J. S. (1994). Higher plant respiration and its relationship to photosynthesis. In Ecology of Photosynthesis: Ecological Studies, ed. Schulze, E.-D. and Caldwell, M. M.. Vol. 100. Berlin: Springer, pp. 71–101.
Amthor, J. S. (2000a) The McCree-de Wit-Penning de Vries-Thornley respiration paradigms: 30 years later. Annals of Botany, 86, 1–20.
Amthor, J. S. (2000b) Direct effect of elevated CO2 on nocturnal in situ leaf respiration in nine temperature deciduous tree species is small. Tree Physiology, 20, 139–44.
Atkin, O. K. and Tjoelker, M. G. (2003) Thermal acclimation and the dynamic responses of plant respiration to temperature. Trends in Plant Science, 8, 343–51.
Atkin, O. K., Botman, B. and Lambers, H. (1996) The causes of inherently slow growth in alpine plants: an analysis based on the underlying carbon economies of alpine and lowland Poa species. Functional Ecology, 10, 698–707.
Atkin, O. K., Edwards, E. J. and Loveys, B. R. (2000a) Response of root respiration to changes in temperature and its relevance to global warming. New Phytologist, 147, 141–54.
Atkin, O. K., Holly, C. and Ball, M. C. (2000b) Acclimation of snow gum (Eucalyptus pauciflora) leaf respiration to seasonal and diurnal variations in temperature: the importance of changes in the capacity and temperature sensitivity of respiration. Plant, Cell and Environment, 23, 15–26.
Atkin, O. K., Bruhn, D., Hurry, V. M. and Tjoelker, M. G. (2005a) The hot and the cold: unravelling the variable response of plant respiration to temperature. Functional Plant Biology, 32, 87–105.
Atkin, O. K., Bruhn, D. and Tjoelker, M. G. (2005b) Response of plant respiration to changes in temperature: mechanisms and consequences of variations in Q10 values and acclimation. In Advances in Photosynthesis and Respiration. Plant Respiration: From Cell to Ecosystem, ed. Lambers, H. and Ribas-Carbó, M.. Vol. 18. Dordrecht: Springer, pp. 95–135.
Bååth, E. and Wallander, H. (2003) Soil and rhizosphere microorganisms have the same Q10 for respiration in a model system. Global Change Biology, 9, 1788–91.
Bahn, M., Knapp, M., Garajova, Z., Pfahringer, N. and Cernusca, A. (2006) Root respiration in temperate mountain grasslands differing in land use. Global Change Biology, 12, 995–1006.
Benecke, U. (1985) Tree respiration in steepland stands of Nothofagus truncata and Pinus radiata. In Establishing and Tending of Subalpine Forest: Research and Management, ed. Turner, H. and Tranquillini, W.. Vol. 270. Eidgenössische Anstalt für das forstliche Versuchswesen, pp. 61–70.
Berry, J. A. and Raison, J. K. (1981) Responses of macrophytes to temperature. In Physiological Plant Ecology I. Responses to the Physical Environment, ed. Lange, O. L., Nobel, P. S., Osmond, C. B. and Zeigler, H.. Berlin: Springer-Verlag, pp. 277–338.
Bloom, A. J. and Caldwell, R. M. (1988) Root excision decreases nutrient absorption and gas fluxes. Plant Physiology, 87, 794–6.
Bouma, T. J. and Bryla, D. R. (2000) On the assessment of root and soil respiration for soils of different textures: interactions with soil moisture contents and soil CO2 concentrations. Plant and Soil, 227, 215–21.
Bouma, T. J., Nielsen, K. L., Eissenstat, D. M. and Lynch, J. P. (1997) Estimating respiration of roots in soil: interactions with soil CO2, soil temperature and soil water content. Plant and Soil, 195, 221–32.
Bouma, T. J., Yanai, R. D., Elkin, A. D.et al. (2001) Estimating age-dependent costs and benefits of roots with contrasting life span: comparing apples and oranges. New Phytologist, 150, 685–95.
Bowden, R. D., Nadelhoffer, K. J., Boone, R. D., Melillo, J. M. and Garrison, J. B. (1993) Contributions of aboveground litter, belowground litter, and root respiration to total soil respiration in a temperature mixed hardwood forest. Canadian Journal of Forest Research, 23, 1402–7.
Bryla, D. R., Bouma, T. J. and Eissenstat, D. M. (1997) Root respiration in citrus acclimates to temperature and slows during drought. Plant Cell and Environment, 20, 1411–20.
Bryla, D. R., Bouma, T. J., Hartmond, U. and Eissenstat, D. M. (2001) Influence of temperature and soil drying on respiration of individual roots in citrus: integrating greenhouse observations into a predictive model for the field. Plant Cell and Environment, 24, 781–90.
Burton, A. J. and Pregitzer, K. S. (2003) Field measurements of root respiration indicate little to no seasonal temperature acclimation for sugar maple and red pine. Tree Physiology, 23, 273–80.
Burton, A. J., Pregitzer, K. S., Zogg, G. P. and Zak, D. R. (1996) Latitudinal variation in sugar maple fine root respiration. Canadian Journal of Forest Research, 26, 1761–8.
Burton, A. J., Zogg, G. P., Pregitzer, K. S. and Zak, D. R. (1997) Effect of measurement CO2 concentration on sugar maple root respiration. Tree Physiology, 17, 421–7.
Burton, A. J., Pregitzer, K. S., Zogg, G. P. and Zak, D. R. (1998) Drought reduces root respiration in sugar maple forests. Ecological Applications, 8, 771–8.
Burton, A. J., Pregitzer, K. S., Ruess, R. W., Hendrik, R. L. and Allen, M. F. (2002) Root respiration in North American forests: effects of nitrogen concentration and temperature across biomes. Oecologia, 131, 559–68.
Cabrera, R. M. and Saltveit, M. E. (2003) Survey of wound-induced ethylene production by excised root segments. Physiologia Plantarum, 119, 203–11.
Cheng, W., Coleman, D. C., Carroll, C. R. and Hoffman, C. A. (1993) In situ measurements of root respiration and soluble C concentrations in the rhizosphere. Soil Biology and Biochemistry, 25, 1189–96.
Cheng, W. X., Fu, S. L., Susfalk, R. B. and Mitchell, R. J. (2005) Measuring tree root respiration using 13C natural abundance: rooting medium matters. New Phytologist, 167, 297–307.
Christ, R. A. and Korner, C. (1995) Responses of shoot and root gas-exchange, leaf blade expansion and biomass production to pulses of elevated CO2 in hydroponic wheat. Journal of Experimental Botany, 46, 1661–7.
Covey-Crump, E. M., Attwood, R. G. and Atkin, O. K. (2002) Regulation of root respiration in two species of Plantago that differ in relative growth rate: the effect of short- and long-term changes in temperature. Plant Cell and Environment, 25, 1501–13.
Cramer, M. D. and Richards, M. B. (1999) The effect of rhizosphere dissolved inorganic carbon on gas exchange characteristics and growth rates of tomato seedlings. Journal of Experimental Botany, 50, 79–87.
Crawford, R. M. M. and Palin, M. A. (1981) Root respiration and temperature limits to the north-south distribution of four perennial maritime plants. Flora, 171, 338–54.
Cropper, W. P. J. and Gholz, H. L. (1991) In situ needle and fine root respiration in mature slash pine (Pinus elliottii) trees. Canadian Journal of Forest Research, 21, 1589–95.
Davidson, E. A., Verchot, L. V., Cattanio, J. H., Ackerman, I. L. and Carvalho, J. E. M. (2000) Effects of soil water content on soil respiration in forests and cattle pastures of eastern Amazonia. Biogeochemistry, 48, 53–69.
Wit, C. T., Brouwer, R. and Penning de Vries, F. W. T. (1970) The simulation of photosynthetic systems. In Prediction and Measurement of Photosynthetic Productivity, ed. Setlik, I.. Wageningen: Centre for Agricultural Publishing and Documentation, pp. 47–70.
Desrochers, A., Landhäusser, S. M. and Lieffers, V. J. (2002) Coarse and fine root respiration in aspen (Populus tremoluides). Tree Physiology, 22, 725–32.
Dilly, O., Bach, H. J., Buscot, F.et al. (2000) Characteristics and energetic strategies of the rhizosphere in ecosystems of the Bornhoved Lake district. Applied Soil Ecology, 15, 201–10.
Eccher, M. (1972) Die Wurzelatmung von Holzpflanzen und ihre Bedeutung für die Stoffproduktion. University of Innsbruck, Innsbruck.
Edwards, E. J., Benham, D. G., Marland, L. A. and Fitter, A. H. (2004) Root production is determined by radiation flux in a temperate grassland community. Global Change Biology, 10, 209–27.
Ekblad, A. and Högberg, P. (2001) Natural abundance of 13C in CO2 respired from forest soils reveals speed of link between tree photosynthesis and root respiration. Oecologia, 127, 305–8.
Ewel, K. C., Cropper, W. P. and Gholz, H. L. (1987) Soil CO2 evolution in Florida slash pine plantations. I. Importance of root respiration. Canadian Journal of Forest Research, 17, 330–3.
Fahey, T. J. and Yavitt, J. B. (2005) An in situ approach for measuring root-associated respiration and nitrate uptake of forest trees. Plant and Soil, 272, 125–31.
Farrar, J. F. (1999) Carbohydrate: where does it come from, where does it go? In Plant Carbohydrate Biochemistry, ed. Bryant, J. A., Burrell, M. M. and Kruger, N. J.. Oxford: Bios Scientific Publishers, pp. 29–46.
Farrar, J. F. and Williams, J. H. H. (1990). Control of the rate of respiration in roots. In Compartmentation of Plant Metabolism in Non-photosynthetic Tissues, ed. Emes, M. J.. Cambridge: Cambridge University Press, pp. 167–88.
Fitter, A. H., Graves, J. D., Self, G. K.et al. (1998) Root production, turnover and respiration under two grassland types along an altitudinal gradient: influence of temperature and solar radiation. Oecologia, 114, 20–30.
Flores, H. E., Weber, C. and Puffett, J. (1996) Underground plant metabolism: the biosynthetic potential of roots. In Plant Roots: The Hidden Half, 2nd edn, ed. Waisel, Y., Eshel, A. and Kafkafi, U.. New York: Marcel Dekker, pp. 931–56.
Framba, L. (1980) Beiträge zur Methodik der Wurzelatmungsmessung und ihre Anwendung bei der physiologischen Charakterisierung von jungen Nadelbäumen. University of Innsbruck, Innsbruck.
Gansert, D. (1994) Root respiration and its importance for the carbon balance of beech saplings (Fagus sylvatica L.) in a montane beech forest. Plant and Soil, 167, 109–19.
Gansert, D. (1995) Die Wurzel- und Sproßrespiration junger Buchen (Fagus sylvatica L.) in einem montanen Moder-Buchenwald. Göttingen: Cuvillier Verlag.
George, K., Norby, R. J., Hamilton, J. G. and DeLucia, E. H. (2003) Fine-root respiration in a loblolly pine and sweetgum forest growing in elevated CO2. New Phytologist, 160, 511–22.
Godbold, D. L., Hoosbeek, M. R., Lukac, M.et al. (2006) Mycorrhizal hyphal turnover as a dominant process for carbon input into soil organic matter. Plant and Soil, 281, 15–24.
Gonzàlez-Meler, M. A. and Siedow, J. N. (1999) Direct inhibition of mitochondrial respiratory enzymes by elevated CO2: does it matter at the tissue or whole-plant level?Tree Physiology, 19, 253–9.
Gorissen, A. and Kuyper, T. W. (2000) Fungal species-specific responses of ectomycorrhizal Scots pine (Pinus sylvestris) to elevated [CO2]. New Phytologist, 146, 163–8.
Grayston, S. J., Vaughan, D. and Jones, D. (1997) Rhizosphere carbon flow in trees, in comparison with annual plants: the importance of root exudation and its impact on microbial activity and nutrient availability. Applied Soil Ecology, 5, 29–56.
Gunn, S. and Farrar, J. F. (1999) Effects of a 4°C increase in temperature on partitioning of leaf area and dry mass, root respiration and carbohydrates. Functional Ecology, 13, 12–20.
Haller, T. and Stolp, H. (1985) Quantitative estimation of root exudation of maize plants. Plant Soil, 86, 207–16.
Heinemeyer, A. and Fitter, A. H. (2004) Impact of temperature on the arbuscular mycorrhizal (AM) symbiosis: growth responses of the host plant and its AM fungal partner. Journal of Experimental Botany, 55, 525–34.
Heinemeyer, A., Ineson, P., Ostle, N. and Fitter, A. H. (2006) Respiration of the external mycelium in the arbuscular mycorrhizal symbiosis shows strong dependence on recent photosynthates and acclimation to temperature. New Phytologist, 171, 159–70.
Heinemeyer, A., Hartley, I. P., Evans, S. P., Carreira De La Fuente, J. A. and Ineson, P. (2007) Forest soil CO2 flux: uncovering the contribution and environmental responses of ectomycorrhizas. Global Change Biology, 13, 1786–97.
Hendrick, R. L. and Pregitzer, K. S. (1992) The demography of fine roots in a northern hardwood forest. Ecology, 73, 1094–104.
Hendricks, J. J., Nadelhoffer, K. J. and Aber, J. D. (1993) Assessing the role of fine roots in carbon and nutrient cycling. Trends in Ecology and Evolution, 8, 174–8.
Hendricks, J. J., Hendrick, R. L., Wilson, C. A.et al. (2006) Assessing the patterns and controls of fine root dynamics: an empirical test and methodological review. Journal of Ecology, 94, 40–57.
Hertel, D. and Leuschner, C. (2002) A comparison of four different fine root production estimates with ecosystem carbon balance data in a Fagus-Quercus mixed forest. Plant and Soil, 239, 237–51.
Higgins, P. D. and Spomer, G. G. (1976) Soil temperature effects on root respiration and the ecology of alpine and subalpine plants. Botanical Gazette, 137, 110–20.
Högberg, M. N. and Högberg, P. (2002) Extramatrical ectomycorrhizal mycelium contributes one-third of microbial biomass and produces, together with associated roots, half the dissolved organic carbon in a forest soil. New Phytologist, 154, 791–5.
Högberg, P., Nordgren, A., Buchmann, N.et al. (2001) Large-scale forest girdling shows that current photosynthesis drives soil respiration. Nature, 411, 789–92.
Högberg, P., Nordgren, A. and Agren, G. I. (2002) Carbon allocation between tree root growth and root respiration in boreal pine forest. Oecologia, 132, 579–81.
Horwath, W. R., Pregitzer, K. S. and Paul, E. A. (1994) 14C allocation in tree soil systems. Tree Physiology, 14, 1163–76.
Jakobsen, I. and Rosendahl, L. (1990) Carbon flow into soil and external hyphae from roots of mycorrhizal cucumber plants. New Phytologist, 115, 77–83.
Johnson, D., Leake, J. R. and Read, D. J. (2001a) Novel in-growth core system enables functional studies of grassland mycorrhizal mycelial networks. New Phytologist, 152, 555–62.
Johnson, D., Leake, J. R., Ostle, N., Ineson, P. and Read, D. J. (2002a) In situ13CO2 pulse-labelling of upland grassland demonstrates a rapid pathway of carbon flux from arbuscular mycorrhizal mycelia to the soil. New Phytologist, 153, 327–34.
Johnson, D., Leake, J. R. and Read, D. J. (2002b) Transfer of recent photosynthate into mycorrhizal mycelium of an upland grassland: short-term respiratory losses and accumulation of 14C. Soil Biology and Biochemistry, 34, 1521–4.
Johnson, M. G., Tingey, D. T., Phillips, D. L. and Storm, M. J. (2001b) Advancing fine root research with minirhizotrons. Environmental and Experimental Botany, 45, 263–89.
Kalela, E. K. (1955) Über die Veränderungen in den Wurzelverhältnissen der Kiefernbestände im Laufe der Vegetationsperiode. Acta Forestalia Fennica, 65, 1–54.
Keyes, M. R. and Grier, C. C. (1981) Above-ground and below-ground net production in 40-year-old Douglas-Fir stands on low and high productivity sites. Canadian Journal of Forest Research, 11, 599–605.
Kimura, M., Mototani, I. and Hogetsu, K. (1968) Ecological and physiological studies on the vegetation of Mt. Shimagare VI: growth and dry matter production of young Abies stand. The Botanical Magazine Tokyo, 81, 287–96.
King, J. S., Hanson, P. J., Bernhardt, E.et al. (2004) A multiyear synthesis of soil respiration responses to elevated atmospheric CO2 from four forest FACE experiments. Global Change Biology, 10, 1027–42.
Kucey, R. M. N. and Paul, E. A. (1982) Carbon flow, photosynthesis, and N2 fixation in mycorrhizal and nodulated Faba Beans (Vicia-Faba L). Soil Biology and Biochemistry, 14, 407–12.
Kuiper, D. (1983) Genetic differentiation in Plantago-Major: growth and root respiration and their role in phenotypic adaptation. Physiologia Plantarum, 57, 222–30.
Kutsch, W. L., Staack, A., Wötzel, J., Middelhoff, U. and Kappen, L. (2001a) Field measurements of root respiration and total soil respiration in an alder forest. New Phytologist, 150, 157–68.
Kutsch, W. L., Eschenbach, C., Dilly, O.et al. (2001b) The carbon cycle of contrasting landscape elements of the Bornhöved Lake district. In Ecosystem Properties and Landscape Function in Central Europe, ed. Lenz, R., Hantschel, R. and Tenhunen, J. D.. Vol. 147. Ecological Studies. Berlin: Springer, pp. 75–95.
Kutsch, W. L., Liu, C. J., Hörmann, G. and Herbst, M. (2005) Spatial heterogeneity of ecosystem carbon fluxes in a broadleaved forest in Northern Germany. Global Change Biology, 11, 70–88.
Kuzyakov, Y. (2002) Separating microbial respiration of exudates from root respiration in non-sterile soils: a comparison of four methods. Soil Biology and Biochemistry, 34, 1621–31.
Kuzyakov, Y. and Cheng, W. (2001) Photosynthesis controls of rhizosphere respiration and organic matter decomposition. Soil Biology and Biochemistry, 33, 1915–25.
Kuzyakov, Y. and Cheng, W. (2004) Photosynthesis controls of CO2 efflux from maize rhizosphere. Plant and Soil, 263, 85–99.
Kuzyakov, Y. and Domanski, G. (2000) Carbon input by plants into the soil. Review. Journal of Plant Nutrition and Soil Science, 163, 421–31.
Kuzyakov, Y. and Larionova, A. A. (2005) Root and rhizomicrobial respiration: a review of approaches to estimate respiration by autotrophic and heterotrophic organisms in soil. Journal of Plant Nutrition and Soil Science, 168, 503–20.
Kuzyakov, Y. and Siniakina, S. V. (2001) A novel method for separating root-derived organic compounds from root respiration in non-sterilized soils. Journal of Plant Nutrition and Soil Science, 164, 511–17.
Kuzyakov, Y., Kretzschmar, A. and Stahr, K. (1999) Contribution of Lolium perenne rhizodeposition to carbon turnover of pasture soil. Plant and Soil, 213, 127–36.
Lambers, H. (1985) Respiration in intact plants and tissues: its regulation and dependance on environmental factors, metabolism and invaded organisms. In Encyclopedia of Plant Physiology, ed. Douce, R. and Day, D. A.. Berlin: Springer-Verlag, pp. 418–73.
Lambers, H. (1987) Growth, respiration, exudation and symbiotic association: the fate of carbon translocated to roots. In Root Development and Function, ed. Gregory, P. J., Lake, J. V. and Rose, D. A.. Cambridge: Cambridge University Press, pp. 125–46.
Lambers, H., Posthumus, F., Stulen, I.et al. (1981) Energy-metabolism of Plantago-Major Ssp-Major as dependent on the supply of mineral nutrients. Physiologia Plantarum, 51, 245–52.
Lambers, H., Werf, A. and Konings, H. (1991) Respiratory patterns in root in relation to their functioning. In Plant Roots: The Hidden Half, ed. Waisel, Y., Eshel, A. and Kafkafi, U.. New York: Marcel Dekker, pp. 229–64.
Lambers, H., Werf, A. and Bergkotte, M. (1993) Respiration: the alternative pathway. In Methods in Comparative Plant Ecology: A Laboratory Manual, ed. Hendry, G. A. F. and Grime, J. P.. London: Chapman and Hall, pp. 140–4.
Lambers, H., Atkin, O. K. and Scheurwater, I. (1996) Respiratory pattern in roots in relation to their functioning. In Plant Roots: The Hidden Half, 2nd edn, ed. Waisel, Y., Eshel, A. and Kafkafi, U.. New York: Marcel Dekker, pp. 323–62.
Larigauderie, A. and Körner, C. (1995) Acclimation of leaf dark respiration to temperature in alpine and lowland plant species. Annals of Botany, 76, 245–52.
Lauenroth, W. K. (2000) Methods of estimating belowground net primary production. In Methods in Ecosystem Science, ed. Sala, O.. New York: Springer-Verlag, pp. 58–71.
Leake, J. R., Johnson, D., Donnelly, D. P.et al. (2004) Networks of power and influence: the role of mycorrhizal mycelium in controlling plant communities and agroecosystem functioning. Canadian Journal of Botany, 82, 1016–45.
Lee, M.-S., Nakane, K., Nakatsubo, T. and Koizumi, H. (2003) Seasonal changes in the contribution of root respiration to total soil respiration in a cool-temperate deciduous forest. Plant and Soil, 255, 311–18.
Leverenz, J. W., Bruhn, D. and Saxe, H. (1999) Responses of two provenances of Fagus sylvatica seedlings to a combination of four temperature and two CO2 treatments during their first growing season: gas exchange of leaves and roots. New Phytologist, 144, 437–54.
Linder, S. and Troeng, E. (1981) The seasonal variation in stem and coarse root respiration of a 20-year old Scots pine (Pinus sylvestris L.). In Radial Growth in Trees, ed. Tranquillini, W.. Vol. 142. Wien: Mitteilungen der forstlichen Bundesversuchsanstalt, pp. 125–39.
Lipp, C. C. and Andersen, C. P. (2003) Role of carbohydrate supply in white and brown root respiration of ponderosa pine. New Phytologist, 160, 523–31.
Loveys, B. R., Atkinson, L. J., Sherlock, D. J.et al. (2003) Thermal acclimation of leaf and root respiration: an investigation comparing inherently fast- and slow-growing plant species. Global Change Biology, 9, 895–910.
Lowry, O. H., Rosenbrough, H. J., Farr, A. L. and Randall, R. J. (1951) Protein measurement with the Folin phenol reagent. Biological Chemistry, 193, 265–75.
Maier, C. A. and Kress, L. W. (2000) Soil CO2 evolution and root respiration in 11 year-old loblolly pine (Pinus taeda) plantations as affected by moisture and nutrient availability. Canadian Journal of Forest Research, 30, 347–59.
Majdi, H. (1996) Root sampling methods: applications and limitations of the minirhizotron technique. Plant and Soil, 185, 255–8.
Majdi, H., Pregitzer, K., Moren, A. S., Nylund, J. E. and Agren, G. I. (2005) Measuring fine root turnover in forest ecosystems. Plant and Soil, 276, 1–8.
Marshall, J. D. and Perry, D. A. (1987) Basal and maintenance respiration of mycorrhizal and nonmycorrhizal root systems of conifers. Canadian Journal of Forest Research, 17, 872–7.
McCutchan, C. L. and Monson, R. K. (2001) Night-time respiration rate and leaf carbohydrate concentrations are not coupled in two alpine perennial species. New Phytologist, 149, 419–30.
McDowell, N. G., Marshall, J. D., Qi, J. G. and Mattson, K. (1999) Direct inhibition of maintenance respiration in western hemlock roots exposed to ambient soil carbon dioxide concentrations. Tree Physiology, 19, 599–605.
Middelhoff, U. (2000) Simulationsgestützte Analyse der raum-zeitlichen Verteilung der Biomasse in einem Erlenwald unter besonderer Beachtung der Feinwurzeldynamik. Aachen: Shaker Verlag.
Mori, S. and Hagihara, A. (1991) Root respiration in Chamaecyparis obtusa trees. Tree Physiology, 8, 217–25.
Moyano, F. E., Kutsch, W. L. and Schulze, E.-D. (2007) Response of mycorrhizal, rhizosphere and soil basal respiration to temperature and photosynthesis in a barley field. Soil Biology and Biochemistry, 39, 843–53.
Moyano, F. E., Kutsch, W. L. and Rebmann, C. (2008) Soil respiration fluxes in relation to photosynthetic activity in broad-leaf and needle-leaf forest stands. Agricultural and Forest Meteorology, 148, 135–43.
Nadelhoffer, K. J., Aber, J. D. and Melillo, J. M. (1985) Fine roots, net primary production, and soil nitrogen availability: a new hypothesis. Ecology, 66, 1377–90.
Nguyen, C. (2003) Rhizodeposition of organic C by plants: mechanisms and controls. Agronomie, 23, 375–96.
Palta, J. A. and Nobel, P. S. (1989a) Root respiration of Agave deserti: influence of temperature, water status and root age on daily patterns. Journal of Experimental Botany, 40, 181–6.
Palta, J. A. and Nobel, P. S. (1989b) Influences of water status, temperature, and root age on daily patterns of root respiration for two cactus species. Annals of Botany, 63, 651–62.
Paterson, E., Hall, J. M., Rattray, E. A. S.et al. (1997) Effect of elevated CO2 on rhizosphere carbon flow and soil microbial processes. Global Change Biology, 3, 363–77.
Paul, E. A. and Clark, F. E. (1989) Soil Microbiology and Biochemistry. New York: Academic Press.
Pendall, E., Bridgham, S., Hanson, P. J.et al. (2004) Below-ground process responses to elevated CO2 and temperature: a discussion of observations, measurement methods, and models. New Phytologist, 162, 311–22.
Penning de Vries, F. W. T., Brunsting, A. H. M. and Laar, H. H. (1974) Products, requirements and efficiency of biosynthesis: a quantitative approach. Journal of Theoretical Biology, 45, 339–77.
Persson, H. (1978) Root dynamics in a young Scots pine stand in Central Sweden. Oikos, 30, 508–19.
Persson, H. (1980) Fine-root dynamics in a Scots pine stand with and without near optimum nutrient and water regimes. Acta Phytogeographica Suecica, 68, 101–10.
Phillips, R. P. and Fahey, T. J. (2005) Patterns of rhizosphere carbon flux in sugar maple (Acer saccharum) and yellow birch (Betula allegheniensis) saplings. Global Change Biology, 11, 983–95.
Poorter, H., Remkes, C. and Lambers, H. (1990) Carbon and nitrogen economy of 24 wild species differing in relative growth rate. Plant Physiololgy, 94, 621–7.
Poorter, H., Vandevijver, C., Boot, R. G. A. and Lambers, H. (1995) Growth and carbon economy of a fast-growing and a slow-growing grass species as dependent on nitrate supply. Plant and Soil, 171, 217–27.
Powell, S. W. and Day, F. P. (1991) Root production in four communities in the Great Dismal Swamp. American Journal of Botany, 78, 288–97.
Pregitzer, K. S., Kubiske, M. E., Yu, C. K. and Hendrick, R. L. (1997) Root architecture, carbon and nitrogen in four temperate forest species. Oecologia, 111, 302–8.
Pregitzer, K. S., Laskowski, M. J., Burton, A. J., Lessard, V. C. and Zak, D. R. (1998) Variation in sugar maple root respiration with root diameter and soil depth. Tree Physiology, 18, 665–70.
Qi, J. E., Marshall, J. D. and Mattson, K. G. (1994) High soil carbon-dioxide concentrations inhibit root respiration of Douglas-Fir. New Phytologist, 128, 435–42.
Rakonczay, Z., Seiler, J. R. and Samuelson, L. J. (1997) A method for the in situ measurement of fine root gas exchange of forest trees. Environmental and Experimental Botany, 37, 107–13.
Reuveni, J., Gale, J. and Mayer, A. M. (1993) Reduction of respiration by high ambient CO2 and the resulting error in measurements of respiration made with O2 electrodes. Annals of Botany, 72, 129–31.
Russell, R. S. (1982) Plant Root Systems, 1st edn. McGraw-Hill.
Ryan, M. G., Hubbard, R. M., Pongracic, S., Raison, R. J. and McMurtrie, R. E. (1996) Foliage, fine-root, woody-tissue and stand respiration in Pinus radiata in relation to nitrogen status. Tree Physiology, 16, 333–43.
Rygiewicz, P. T. and Andersen, C. P. (1994) Mycorrhizae alter quality and quantity of carbon allocated below ground. Nature, 369, 58–60.
Sands, R., Nugroho, P. B., Leung, D. W. M., Sun, O. J. and Clinton, P. W. (2000) Changes in soil CO2 and O2 concentrations when radiata pine is grown in competition with pasture or weeds and possible feedbacks with radiata pine root growth and respiration. Plant and Soil, 225, 213–25.
Schlesinger, W. H. (1997) Biogeochemistry: An Analysis of Global Change, 2nd edn. New York: Academic Press.
Simard, S. W., Perry, D. A., Jones, M. D.et al. (1997) Net transfer of carbon between ectomycorrhizal tree species in the field. Nature, 388, 579–82.
Smakman, G. and Hofstra, R. J. J. (1982) Energy metabolism of Plantago lanceolata, as affected by change in root temperature. Physiologia Plantarum, 56, 33–7.
Smith, S. E. and Read, D. J. (1997) Mycorrhizal Symbiosis. London: Academic Press.
Soderstrom, B. and Read, D. J. (1987) Respiratory activity of intact and excised ectomycorrhizal mycelial systems growing in unsterilized soil. Soil Biology and Biochemistry, 19, 231–6.
Sowell, J. B. and Spomer, G. G. (1986) Ecotypic variation in root respiration rate among elevational populations of Abies lasiocarpa and Picea engelmannii. Oecologia, 68, 375–9.
Sprugel, D. G. and Benecke, U. (1991) Measuring woody-tissue respiration and photosynthesis. In Techniques and Approaches in Forest Tree Ecophysiology, ed. Lassioe, J. P. and Hinckley, T. M.. Boca Raton, FL: CRC Press, pp. 329–55.
Sprugel, D. G., Ryan, M. R., Brooks, J. R., Vogt, K. A. and Martin, T. A. (1995) Respiration from the organ level to the stand. In Resource Physiology of Conifers: Acquisition, Allocation, and Utilization, ed. Smith, W. K. and Hinckley, T. M.. San Diego, CA: Academic Press, pp. 255–99.
Staddon, P. L. (2005) Mycorrhizal fungi and environmental change: the need for a mycocentric approach. New Phytologist, 167, 635–7.
Staddon, P. L., Ramsey, C. B., Ostle, N., Ineson, P. and Fitter, A. H. (2003) Rapid turnover of hyphae of mycorrhizal fungi determined by AMS microanalysis of 14C. Science, 300, 1138–40.
Stark, S. and Kytoviita, M. M. (2005) Evidence of antagonistic interactions between rhizosphere microorganisms and mycorrhizal fungi associated with birch (Betula pubescens). Acta Oecologica – International Journal of Ecology, 28, 149–55.
Swinnen, J. (1994) Evaluation of the use of a model rhizodeposition technique to separate root and microbial respiration in soil. Plant and Soil, 165, 89–101.
Tang, J. W., Baldocchi, D. D. and Xu, L. (2005) Tree photosynthesis modulates soil respiration on a diurnal time scale. Global Change Biology, 11, 1298–304.
Teskey, R. O. and McGuire, M. A. (2005) CO2 transported in xylem sap affects CO2 efflux from Liquidambar styraciflua and Platanus occidentalis stems, and contributes to observed wound respiration phenomena. Trees – Structure and Function, 19, 357–62.
Tjoelker, M. G., Oleksyn, J. and Reich, P. B. (1999) Acclimation of respiration to temperature and CO2 in seedlings of boreal tree species in relation to plant size and relative growth rate. Global Change Biology, 5, 679–91.
Tjoelker, M. G., Oleksyn, J. and Reich, P. B. (2001) Modelling respiration of vegetation: evidence for a general temperature-dependent Q(10). Global Change Biology, 7, 223–30.
Tjoelker, M. G., Craine, J. M., Wedin, D., Reich, P. B. and Tilman, D. (2005) Linking leaf and root trait syndromes among 39 grassland and savannah species. New Phytologist, 167, 493–508.
Toal, M. E., Yeomans, C., Killham, K. and Meharg, A. A. (2000) A review of rhizosphere carbon flow modelling. Plant and Soil, 222, 263–81.
Tranquillini, W. (1959) Die Stoffproduktion der Zirbe (Pinus cembra L.) an der Waldgrenze während eines Jahres II. Zuwachs und CO2-Bilanz. Planta, 54, 130–51.
Uren, N. C. (2000) Types, amounts, and possible functions of compounds released into the rhizosphere by soil-grown plants. In The Rhizosphere: Biochemistry and Organic Substances at the Soil–Plant Interface, ed. Pinto, R., Varanini, Z. and Nannipieri, P.. New York: Marcel Dekker, pp. 19–40.
Westhuizen, M. M. and Cramer, M. D. (1998) The influence of elevated rhizosphere dissolved inorganic carbon concentrations on respiratory O2 and CO2 flux in tomato roots. Journal of Experimental Botany, 49, 1977–85.
Vanemmerik, W. A. M., Wagner, A. M. and Vanderplas, L. H. W. (1992) A quantitative comparison of respiration in cells and isolated-mitochondria from Petunia-Hybrida suspension-cultures: a high-yield isolation procedure. Journal of Plant Physiology, 139, 390–6.
Vogt, K. A. and Bloomfield, J. (1991) Tree root turnover and scenescence. In Plant Roots: The Hidden Half, ed. Waisel, Y., Eshel, A. and Kafkaki, U.. New York: Marcel Dekker, pp. 287–306.
Vogt, K. A. and Persson, H. (1991) Root methods. In Techniques and Approaches in Forest Tree Ecophysiology, ed. Lassoie, J. P. and Hinckley, T.. Boca Raton, FL: CRC Press, pp. 477–502.
Vogt, K. A., Vogt, D. J., Moore, E. E. and Sprougel, D. G. (1989) Methodological considerations in measuring biomass, production, respiration and nutrient resorption for tree roots in natural ecosystems. In Applications of Continuous and Steady-state Methods in Root Biology, ed. Torrey, J. and Winship, L. J.. Dordrecht, the Netherlands: Kluwer Academic Publishers.
Volder, A., Smart, D. R., Bloom, A. J. and Eissenstat, D. M. (2005) Rapid decline in nitrate uptake and respiration with age in fine lateral roots of grape: implications for root efficiency and competitive effectiveness. New Phytologist, 165, 493–501.
Vose, J. M. and Ryan, M. G. (2002) Seasonal respiration of foliage, fine roots, and woody tissues in relation to growth, tissue N, and photosynthesis. Global Change Biology, 8, 182–93.
Walker, D. A. (1985). Measurement of oxygen and chlorophyll fluorescence. In Techniques in Bioproductivity and Photosynthesis, ed. Coombs, . Oxford: Pergamon Press, pp. 95–106.
Weger, H. G. and Guy, R. D. (1991) Cytochrome and alternative pathway respiration in white spruce (Picea glauca) roots. Effects of growth and measurement temperature. Physiologia Plantarum, 83, 675–81.
Werth, M. and Kuzyakov, Y. (2005) Root-derived carbon in soil respiration and microbial biomass determined by 14C and 13C. Soil Biology and Biochemistry, 40, 625–37.
Wiant, H. V. (1967) Has contribution of litter decay to forest soil respiration been overestimated. Journal of Forestry, 65, 408.
Wieser, G. and Bahn, M. (2004) Seasonal and spatial variation of woody tissue respiration in a Pinus cembra tree at the alpine timberline in the central Austrian Alps. Trees – Structure and Function, 18, 576–80.
Zak, D. R., Holmes, W. E., MacDonald, N. W. and Pregitzer, K. S. (1999) Soil temperature, matric potential, and the kinetics of microbial respiration and nitrogen mineralization. Soil Science Society of America Journal, 63, 575–84.
Zak, D. R., Pregitzer, K. S., King, J. S. and Holmes, W. E. (2000) Elevated atmospheric CO2, fine roots and the response of soil microorganisms: a review and hypothesis. New Phytologist, 147, 201–22.
Zhao, M. S., Heinsch, F. A., Nemani, R. R. and Running, S. W. (2005) Improvements of the MODIS terrestrial gross and net primary production global data set. Remote Sensing of Environment, 95, 164–76.
Zogg, G. P., Zak, D. R., Burton, A. J. and Pregitzer, K. S. (1996) Fine root respiration in northern hardwood forests in relation to temperature and nitrogen availability. Tree Physiology, 16, 719–25.