Summary
Comparative laboratory gas exchange and relative growth rate experiments were conducted on three native California coastal strand species at four salinity treatment levels. Relative mesophyll conductance sensitivities to salinity of Atriplex leucophylla (Moq.) D. Dietr. (C4) and Atriplex californica Moq. in D.C. (C3) were nearly identical. Mesophyll conductances of both species were stimulated by moderate levels of salinity. Mesophyll conductances of Abronia maritima Nutt. ex Wats. (C3) were highest in the absence of salinity and depressed by increasing levels of salinity. Increasing levels of salinity generally decreased net photosynthesis and leaf conductances but increased water use efficiencies. The C4 species, Atriplex leucophylla, had higher mesophyll conductances and water use efficiencies at all salinity levels than the C3 species. The effects of salinity on relative growth and net assimilation rates of greenhouse grown plants were not directly correlated with the effects on net photosynthesis measured in the laboratory. Growth of Abronia maritima was greatly stimulated by low levels of salinity whereas photosynthesis was substantially inhibited. The possible significance of C4 photosynthesis in relation to salinity is discussed.
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Björkman, O.: Environmental and biological control of photosynthesis: Inaugural address. In: Environmental and biological control of photosynthesis (R. Marcelle, ed.), pp. 1–16. The Hague: Junk 1975
Caldwell, M.M.: Physiology of desert halophytes. In: Ecology of halophytes (R.J. Reimold, W.H. Queen, eds.), pp. 355–378. New York: Academic Press 1974
Caldwell, M.M., Osmond, C.B., Nott, D.L.: C4 pathway photosynthesis at low temperature in cold-tolerant Atriplex species. Plant Physiol. 60, 157–164 (1977)
De Jong, T.M.: Comparative gas exchange of four California beach taxa. Oecologia (Berl.) 34, 343–351 (1978)
Ehleringer, J., Björkman, O.: Quantum yields for CO2 uptake in C3 and C4 plants. Plant Physiol. 59, 86–90 (1978)
Gale, J., Poljakoff-Mayber, A.: Interrelations between growth and photosynthesis of salt bush (Atriplex halimus L.) grown in saline media. Aust. J. Biol. Sci. 23, 937–45 (1970)
Gregory, F.G.: Effect of climatic conditions on the growth of barley. Ann. Bot. 40, 1–26 (1926)
Hatch, M.D.: The C4 pathway of photosynthesis: mechanism and function. In: CO2 metabolism and plant productivity (R.H. Burris, C.C. Black, eds.), pp. 59–81. Baltimore: University Park 1976
Jarvis, P.G.: The estimation of resistances to carbon dioxide transfer. In: Plant photosynthetic production: manual of methods (Z. Sesták, J. Catský, P.G. Jarvis, eds.), pp. 566–631. The Hague: Junk 1971
Krenzer, E.G., Moss, D.N., Crookston, R.K.: Carbon dioxide compensation points of flowering plants. Plant Physiol. 56, 194–206 (1975)
Hsiao, T.C.: Plant responses to water stress. Ann. Rev. Plant. Physiol. 24, 519–570 (1973)
Mahall, B.E., Park, R.B.: The ecotone between Spartina foliosa Trin. and Salicornia virginica L. in salt marshes of northern San Francisco Bay II. Soil water and salinity. J. Ecol. 64, 793–809 (1976)
Osmond, C.B., Greenway, H.: Salt responses of carboxylation enzymes from species differing in salt tolerance. Plant Physiol. 49, 260–263 (1972)
Pearcy, R.W.: Temperature responses of growth and photosynthetic CO2 exchange rates in coastal and desert races of Atriplex lentiformis. Oecologia (Berl.) 26, 245–255 (1976)
Slatyer, R.O.: Comparative photosynthesis, growth and transpiration of two species of Atriplex. Planta (Berl.) 93, 175–189 (1970)
Scholander, P.F., Hammel, H.T., Bradstreet, E.D., Hemmingsen, E.A.: Sap pressure in vascular plants. Science 148, 339–346 (1965)
Tiku, B.L.: Effect of salinity on the photosynthesis of the halophyte Salicornia rubra and Distichlis stricta. Physiol. Plant. 37, 23–28 (1976)
West, C., Briggs, G.E., Kidd, F.: Methods and significant relations in the quantitative analysis of plant growth. New Phytol. 19, 200–207 (1920)
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De Jong, T.M. Comparative gas exchange and growth responses of C3 and C4 beach species grown at different salinities. Oecologia 36, 59–68 (1978). https://doi.org/10.1007/BF00344571
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DOI: https://doi.org/10.1007/BF00344571