Photosynthetica 2009, 47(1):55-60 | DOI: 10.1007/s11099-009-0010-y

Effects of buffer capacity on growth, photosynthesis, and solute accumulation of a glycophyte (wheat) and a halophyte (Chloris virgata)

C. W. Yang1, M. L. Zhang1, J. Liu1, D. C. Shi1,*, D. L. Wang1
1 Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, Jilin Province, China

Two species with different resistances to alkaline pH, the glycophylic Triticum aestivum (wheat) and the halophilic Chloris virgata, were chosen as test organisms. The salt-alkaline (SA) mixed stress conditions with different buffer capacities (BC) but with the same salt molarities and pH were established by mixing neutral (NaCl, Na2SO4), and alkaline salts (NaHCO3 and Na2CO3) in various proportions. Growth, photosynthetic characteristics, and solute accumulation of the seedlings were monitored to test the validity of BC as a decisive index of alkali-stress (AS) intensity in SA mixed stress. At the same salinities and pHs, the relative growth rate, the content of photosynthetic pigments, and net photosynthetic rates of wheat and C. virgata decreased, while Na+ content and Na+/K+ ratios in shoots increased with increasing BC. Hence BC was a true measure of AS intensity at mixed SA stress and the alkali-resistance mechanism of plants was easy to interpret. BC of soil solution is an important parameter for estimating the alkalization degree of salt-alkalized soil.

Additional key words: alkali-stress; carotenoids; Chloris virgata; chlorophyll; K+; Na+; organic acids; proline; salt stress; stomatal conductance; transpiration rate; wheat

Received: June 4, 2008; Accepted: October 14, 2008; Published: March 1, 2009  Show citation

ACS AIP APA ASA Harvard Chicago IEEE ISO690 MLA NLM Turabian Vancouver
Yang, C.W., Zhang, M.L., Liu, J., Shi, D.C., & Wang, D.L. (2009). Effects of buffer capacity on growth, photosynthesis, and solute accumulation of a glycophyte (wheat) and a halophyte (Chloris virgata). Photosynthetica, 47(1), 55-60. doi: 10.1007/s11099-009-0010-y
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. Arnon, D.I.: Copper enzymes in isolated chloroplasts. Polyphenoloxidase in Beta vulgaris.-Plant Physiol. 24: 1-15, 1949. Go to original source...
    2. Blumwald, E.: Sodium transport and salt tolerance in plants.-Curr. Opin. Cell Biol. 12: 431-443, 2000. Go to original source...
    3. Ge, Y., Li, J.D.: A preliminary study on the effects of halophytes on salt accumulation and desalination in the soil of Songnen Plain, northeast China.-Acta pratacult. sin. 1: 70-76, 1990.
    4. James, R.A., Munns, R., Caemmerer, S. von, Trejo, C., Miller, C., Condou, T. (A.G.): Photosynthetic capacity is related to the cellular and subcellular partitioning of Na+, K+ and Cl- in salt-affected barley and durum wheat.-Plant Cell Environ. 29: 2185-2197, 2006. Go to original source...
    5. Jing, J.H., Ding, Z.R.: Determine organic acid content.-In: Boqinnoke, X.H. (ed.): Analysis Method of Plant Biochemistry. Pp. 264-267. Science Press, Beijing 1981.
    6. Kawanabe, S., Zhu, T.C.: Degeneration and conservation of Aneurolepidium chinense grassland in Northern China.-J. jap. Grassland Soc. 37: 91-99, 1991.
    7. Kingsbury, R.W., Epstein, E., Peary, R.W.: Physiological responses to salinity in selected lines of wheat.-Plant Physiol. 74: 417-423, 1984. Go to original source...
    8. Megdiche, W., Hessini, K., Gharbi, F., Jaleel, C.A., Ksouri, R., Abdelly, C.: Photosynthesis and photosystem 2 efficiency of two salt-adapted halophytic seashore Cakile maritima ecotypes.-Photosynthetica 46: 410-419, 2008. Go to original source...
    9. Munns, R.: Comparative physiology of salt and water stress.-Plant Cell Environ. 25: 239-250, 2002. Go to original source...
    10. Parida, A.K., Das, A.B.: Salt tolerance and salinity effects on plants: a review.-Ecotoxicol. environ. Safety 60: 324-349, 2005. Go to original source...
    11. Shi, D., Sheng, Y.: Effect of various salt-alkaline mixed stress conditions on sunflower seedlings and analysis of their stress factors.-Environ. exp. Bot. 54: 8-21, 2005. Go to original source...
    12. Shi, D., Wang, D.: Effects of various salt-alkali mixed stresses on Aneurolepidium chinense (Trin.) Kitag.-Plant Soil 271: 15-26, 2005. Go to original source...
    13. Shi, D.C., Yin, L.J.: Difference between salt (NaCl) and alkaline (Na2CO3) stresses on Puccinellia tenuiflora (Griseb.) Scribn. et Merr. plants.-Acta bot. sin. 35: 144-149, 1993.
    14. Shi, D.C., Zhao, K.F.: Effects of NaCl and Na2CO3 on growth of Puccinellia tenuiflora and on present state of mineral elements in nutrient solution.-Acta pratacult. sin. 6: 51-61, 1997.
    15. Wang, B.S., Zhao, K.F.: Comparison of extractive methods of Na+ and K+ in wheat leaves.-Plant Physiol. Commun. 3: 50-52, 1995.
    16. Yang, C.W., Chong, J.N., Kim, C.M., Li, C.Y., Shi, D.C., Wang, D.L.: Osmotic adjustment and ion balance traits of an alkali resistant halophyte Kochia sieversiana during adaptation to salt and alkali conditions.-Plant Soil 294: 263-276, 2007. Go to original source...
    17. Yang, C.W., Jianaer, A., Li, C.Y., Shi, D.C., Wang, D.L.: Comparison of the effects of salt-stress and alkali-stress on photosynthesis and energy storage of an alkali-resistant halophyte Chloris virgata.-Photosynthetica 46: 273-278, 2008a. Go to original source...
    18. Yang, C.W., Wang, P., Li, C.Y., Shi, D.C., Wang, D.L.: Comparison of effects of salt and alkali stresses on the growth and photosynthesis of wheat.-Photosynthetica 46: 107-114, 2008b. Go to original source...
    19. Zhu, G.L., Deng, X.W., Zuo, W.N.: Determination of free proline in plants.-Plant Physiol. Commun. 1: 35-37, 1983.

    Return to the content