Photosynthetica 2004, 42(1):111-116 | DOI: 10.1023/B:PHOT.0000040578.93542.61

Interactive Effects of Salinity and Ozone Pollution on Photosynthesis, Stomatal Conductance, Growth, and Assimilate Partitioning of Wheat (Triticum aestivum L.)

I.A. Hassan1
1 Department of Botany, Faculty of Science, Alexandria University, Alexandria, Egypt, e-mail

Plants of an Egyptian cultivar of wheat (Triticum aestivum L. cv. Giza 63) were exposed in open-top chambers (OTCs) for 8 h d-1 for up to 75 d to a factorial combination of two levels of salinity (0 and 50 mM NaCl) and two levels of O3 (filtered air and 50 mm3 m-3). Exposure to 50 mm3 m-3 O3 significantly decreased stomatal conductance (gs), net photosynthetic rate (PN), and chlorophyll (Chl) content by 20, 25, and 21 %, respectively. This reduction resulted in a change in assimilate allocation in favour of shoot growth leading to a decrease in root to shoot ratio and eventually to a decrease in relative growth rate (RGR) of both root and shoot. There was a very large reduction in yield parameters, especially in the number of ears/plant and 1 000-grain mass. Soil salinity significantly reduced PN and gs by 17 and 15 %, respectively, while Chl content was increased by 17 %. Root growth was decreased leading to an increase in root/shoot ratio. Yield parameters were decreased due to salt stress. There was antagonistic interaction between salinity (50 mM NaCl) and O3 (50 mm3 m-3) showing that salinity effectively protects against the adverse effects of O3 by increasing gs during O3 fumigation.

Additional key words: chlorophyll; ear; NaCl; O3; relative growth rate; shoot, root ratio; 1 000 grain mass

Published: March 1, 2004  Show citation

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Hassan, I.A. (2004). Interactive Effects of Salinity and Ozone Pollution on Photosynthesis, Stomatal Conductance, Growth, and Assimilate Partitioning of Wheat (Triticum aestivum L.). Photosynthetica, 42(1), 111-116. doi: 10.1023/B:PHOT.0000040578.93542.61
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    References

    1. Ashmore, M.R., Bell, J.N.B., Mimmack, A.: Crop growth along a gradient of ambient air pollution.-Environ. Pollut. A 53: 99-121, 1988. Go to original source...
    2. Baker, C.K., Colls, J.J., Fullwood, A.E., Seaton, G.C.R.: Depressions of growth and yield in winter barley exposed to SO2 in the field.-New Phytol. 104: 233-241, 1986. Go to original source...
    3. Bell, J.N.B.: SO2 and the growth of grasses.-In: Unsworth, M.H., Ormrod, D.A. (ed.): Effects of Gaseous Air Pollution in Agriculture and Horticulture. Pp. 225-247. Butterworth, London 1982. Go to original source...
    4. Bell, J.N.B.: Biotic and abiotic interactions with air pollutants.-In: Jäger, H.J., Unsworth, W., De Temmerman, L., Mathy, P. (ed.): Effects of Air Pollution on Agricultural Crops in Europe. Air Pollution Res. Rep. 46: 383-408, 1993.
    5. Bytnerowicz, A., Taylor, O.C.: Influence of ozone, sulphur di-oxide, and salinity on leaf injury, stomatal resistance, growth, and chemical composition of bean plants.-J. environ. Qual. 12: 397-405, 1983. Go to original source...
    6. Coleman, J.S., Mooney, H.A., Gorham, J.N.: Effects of multiple stresses on leaf injury, stomatal resistance, growth and chemical composition of bean plants.-J. environ. Qual. 81: 115-119, 1989. Go to original source...
    7. Cowling, D.W., Lockyer, D.R.: The effect of SO2 on Lolium perenne L. grown at different levels of sulphur and nutrition.-J. exp. Bot. 29: 257-265, 1978. Go to original source...
    8. Davison, A.W., Barnes, J.D.: Effects of O3 on wild plants.-New Phytol. 139: 135-151, 1998. Go to original source...
    9. Downton, W.J.S.: Photosynthesis in salt-stressed grapevines.-Aust. J. Plant Physiol. 4: 183-192, 1977. Go to original source...
    10. El-Khatib, A.A.: The response of some common Egyptian plants to O3 and their use as bioindicators.-Environ. Pollut. 124: 419-428, 2003. Go to original source...
    11. El-Shintinawy, F.: Photosynthesis in two wheat cultivars diffe-ring in salt susceptibility.-Photosynthetica 38: 615-620, 2000. Go to original source...
    12. Fuhrer, J., Egger, A., Lehnherr, B., Grandjean, A., Tschannen, W.: Effects of O3 on the yield of spring wheat (Triticum aestivum L. cv. Albis) grown in open-top field chambers.-Environ. Pollut. 60: 273-289, 1989. Go to original source...
    13. Fuhrer, J., Egger, A., Lehnherr, B., Moeri, P.B., Tschannen, W., Shariat-Madari, H.: Effects of O3 on the grain composition of spring wheat grown in open-top field chambers.-Environ. Pollut. 65: 181-192, 1990. Go to original source...
    14. Fuhrer, J., Grandjean, A. Tschannen, W., Shariat-Madari, H.: The response of spring wheat (Triticum aestivum L.) to O3 at higher elevations. II. Changes in yield, yield composition and grain quality in response to O3 flux.-New Phytol. 121: 211-219, 1992. Go to original source...
    15. Greenway, H., Munns, R.: Mechanisms of salt tolerance in non-halophytes.-Annu. Rev. Plant Physiol. 31: 49-150, 1990.
    16. Grieve, C.M., Lesch, S., Francois, L.E., Maas, V.A.: Analysis of main spike yield components in salt-stressed wheat.-Crop Sci. 32: 697-703, 1992. Go to original source...
    17. Hassan, I.A.: Air pollution in Alexandria region-Egypt. I: An investigation of air quality.-Int. J. environ. Educ. Inform. 18: 67-78, 1999.
    18. Hassan, I.A., Ashmore, M.R., Bell, J.N.B.: Effects of O3 on the stomatal behaviour of Egyptian varieties of radish (Raphanus sativus L. cv. Baladey) and turnip (Brassica rapa L. cv. Sultani).-New Phytol. 128: 243-249, 1994. Go to original source...
    19. Hassan, I.A., Ashmore, M.R., Bell, J.N.B.: Effects of ozone on radish and turnip under Egyptian field conditions.-Environ. Pollut. 89: 107-114, 1995. Go to original source...
    20. Hassan, I.A., Bender, J., Weigel, J.H.: Effects of ozone and drought stress on growth, yield and physiology of tomatoes (Lycopersicon esculentum Mill. cv. Baladey).-Gartenbau-wissenschaft 64: 152-157, 1999.
    21. Hewitt, E.J., Smith, T.A. (ed.): Plant Mineral Nutrition.-English Universities Press, London 1975.
    22. Hoffman, G.J., Maas, E.V., Rawlins, S.L.: Salinity O3 inter-active effects on yield and water relations of pinto bean.-J. environ. Qual. 2: 148-152, 1973. Go to original source...
    23. Huang, L., Murray, F.: Effects of sulphur dioxide fumigation on growth and sulphur accumulation in wheat [Triticum aestivum L. cv. Wilgoyne (Ciano/Gallo)] under salinity stress.-Agr. Ecosyst. Environ. 43: 285-300, 1993. Go to original source...
    24. Huang, L., Murray, F., Yang, X.: Interaction between mild NaCl salinity and sub-lethal SO2 pollution on wheat Triticum aestivum cultivar "Wilgoyne" (Ciano/Gallo). I. Responses of stomatal conductance, photosynthesis, growth and assimilate partitioning.-Agr. Ecosyst. Environ. 48: 163-178, 1994. Go to original source...
    25. Kingsbury, R.W., Epstein, E., Pearcy, R.W.: Physiological re sponses to salinity in selected lines of wheat.-Plant Physiol. 74: 417-423, 1984. Go to original source...
    26. Khan, M.R., Khan, M.W.: Single and interactive effects of O3 and SO2 on tomato.-Environ. exp. Bot. 34: 461-469, 1994. Go to original source...
    27. Kress, L.W. Miller, J.E., Smith, H.J.: Impact of O3 on winter wheat yield.-Environ. exp. Bot. 25: 211-228, 1985. Go to original source...
    28. Malik, I.: Effects of Ozone and Salinity on Pakistani Wheat (Triticum aestivum L. cvs. Pak-81 and Rowal-87).-Ph.D. Thesis. Imperial College of Science, Technology & Medicine, London University, London 2000.
    29. Malik, I., Bell, J.N.B.: The effects of salinity and O3 on wheat.-In: Jäger, H.J., Unsworth, M., De Temmerman, L., Mathy, P. (ed.): Effects of Air Pollution on Agricultural Crops in Europe. Air Pollution Res. Rep. 46: 575-578, 1993.
    30. Mansfield, T.A.: The role of stomata in determining the response of plants to air pollutants.-Curr. Advan. Plant Sci. 2(4): 11-20, 1973.
    31. Milthorpe, F.L., Moorby, J. (ed.): An Introduction to Crop Physiology.-Cambridge Univ. Press, Cambridge 1974. Go to original source...
    32. Mooney, H.A., Winner, W.E.: Carbon gain, allocation and growth as affected by atmospheric pollutants.-In: Schulte-Hostede, S., Darrall, N.M., Blank, L.W., Wellburn, A.R. (ed.): Air Pollution and Plant Metabolism. Pp. 272-287. Elsevier, London 1987.
    33. Munns, R., Grenway, H., Delane, R., Gibbs, J.: Ion concen-tration and carbohydrate status of the elongating leaf tissue of Hordeum vulgare growing at high external NaCl. II. Cause of the growth reduction.-J. exp. Bot. 33: 574-583, 1982. Go to original source...
    34. Munns, R., Termaat, A.: Whole plant response to salinity.-Aust. J. Plant Physiol. 13: 143-160, 1986. Go to original source...
    35. Nasralla, M.M.: Air Pollution in Cairo Metropolitan Area.-National Research Centre, Cairo 1990.
    36. Ogata, G., Maas, E.V.: Interactive effects of salinity and O3 on growth and yield of garden beet.-J. environ. Qual. 2: 518-520, 1973. Go to original source...
    37. Qifu, M., Murray, F.: Soil salinity modifies SO2 sensitivity in soybean.-New Phytol. 119: 269-274, 1991. Go to original source...
    38. Schenone, G., Botteschi, G., Fumagalli, I., Mignanego, L., Montinaro, F.: Physiological effects of ambient air pollution in OTCs on winter wheat.-In: Jäger, H.J., Unsworth, M., De Temmerman, L., Mathy, P. (ed.): Effects of Air Pollution on Agricultural Crops in Europe. Air Pollution Res. Rep. 4: 597-600, 1992.
    39. Stoner, R.: Engineering a solution to the problem salt-laden soils.-New Scientist 3: 42, 1988.
    40. Treshow, M., Stewart, D.: O3 sensitivity of plants in natural communities.-Biol. Conserv. 5: 209-214, 1973. Go to original source...
    41. UNEP: United Nations Environment Programme. Data Report. 3rd-Blackwell, Oxford 1991.
    42. Wahid, A.R., Maggs, R., Shamsi, R., Ashmore, M.R., Bell, J.N.B.: Air pollution and crop yield in Punjab, Pakistan. I: Effects on wheat.-Environ. Pollut. 88: 147-154, 1995. Go to original source...
    43. Welfare, K, Flowers, T.J., Taylor, G., Yeo, A.R.: Additive and antagonistic effects of O3 and salinity on the growth, ion contents and gas exchange of five varieties of rice (Oryza sativa L.).-Environ. Pollut. 92: 257-266, 1996. Go to original source...
    44. WHO/UNEP: Urban Air Pollution in Megacities of the World.-Blackwell, Oxford 1992.
    45. Yeo, A.R., Capron, S.J.M., Flowers, T.J.: The effect of salinity upon photosynthesis in rice (Oryza sativa L.): gas exchange by individual leaves in relation to their salt content.-J. exp. Bot. 36: 1240-1248, 1985. Go to original source...

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