Biologia Plantarum

, Volume 50, Issue 1, pp 138–141 | Cite as

Effects of drought stress on photosynthetic gas exchange, chlorophyll fluorescence and stem diameter of soybean plants

Brief Communication


Changes in plant growth, photosynthetic gas exchange, chlorophyll fluorescence and stem diameter of soybean [Glycine max (L.) Merr.] plants under drought stress were studied. Total plant dry mass was reduced by 30 % compared to well-watered control plants. Leaf water potential was slightly decreased by water stress. Water stress induced daytime shrinkage and reduced night-time expansion of stem. Photosynthetic rate, stomatal conductance and transpiration rate were significantly declined by water stress, while the intercellular CO2 concentration was changed only slightly at the initiation of stress treatment. The maximum photochemical efficiency of photosystem 2 and apparent photosynthetic electron transport rate were not changed by water stress.

Additional key words

Glycine max growth net photosynthetic rate photochemical efficiency of photosystem 2 stomatal conductance transpiration rate water stress 



intercellular CO2 concentration


days after the stress treatment


transpiration rate


apparent photosynthetic electron transport rate


variable to maximum chlorophyll fluorescence ratio (maximum photochemical efficiency of photosystem 2)


stomatal conductance


net photosynthetic rate




leaf water potential


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Cornic, G.: Drought stress inhibits photosynthesis by decreasing stomatal aperture-not by affecting ATP synthesis.-Trends Plant Sci. 5: 187–188, 2000.CrossRefGoogle Scholar
  2. Cornic, G., Briantais, J.M.: Partitioning of photosynthetic electron flow between CO2 and O2 reduction in a C3 leaf (Phaseolus vulgaris L.) at different CO2 concentrationa and during drought stress.-Planta 185: 178–184, 1991.CrossRefGoogle Scholar
  3. De Costa, W.A.J.M., Shanmugathasan, K.N.: Physiology of yield determination of soybean (Glycine max (L.) Merr.) under different irrigation regimes in the sub-humid zone of Sri Lanka.-Field Crops Res. 75: 23–35, 2002.Google Scholar
  4. Farquhar, G.D., Sharkey, T.D.: Stomatal conductance and photosynthesis.-Annu. Rev. Plant Physiol. 33: 317–345, 1982.CrossRefGoogle Scholar
  5. Farquhar, G.D., Wong, S.C., Evans, J.R., Hubick, K.T.: Photosynthesis and gas exchange.-In: Jones, H.G., Flowers, T.J., Jones, M.B. (ed.): Plants under Stress. Pp. 47–69. Cambridge University Press, Cambridge 1989.Google Scholar
  6. Flagella, Z., Campanile, R.G., Stoppelli, M.C., De Caro, A., Di Fonzo, N.: Drought tolerance of photosynthetic electron transport under CO2-enriched and normal air in cereal species.-Physiol. Plant 104: 753–759, 1998.CrossRefGoogle Scholar
  7. Fujita, K., Okada, M., Lei, K., Ito, J., Ohkura, K., Adu-Gyamfi, J.J., Mohapatra, P.K.: Effect of P-deficiency on photoassimilate portioning and rhythmic changes in fruit and stem diameter of tomata (Lycopersicon esculentum) during fruit growth.-J. exp. Bot. 392: 2519–2528, 2003.Google Scholar
  8. Genty, B., Briantais, J.M., Vieira Da Silva, J.B.: Effects of drought on primary photosynthetic processes of cotton leaves.-Plant Physiol 83: 360–364, 1987.CrossRefPubMedGoogle Scholar
  9. He, J.X., Wang, J., Liang, H.G.: Effects of water stress on photochemical function and protein metabolism of photosystem II in wheat leaves.-Physiol. Plant 93: 771–777, 1995.Google Scholar
  10. Imai, S., Iwao, K., Fujiwara, K.: Measurement of plant physiological information of vine tree and indexation of soil moisture control. (1) Analysis of stem diameter variation affected by environmental factors.-Environ. Control Biol. 28: 103–108.Google Scholar
  11. Ito, J., Hasegawa, K., Fujita, K., Ogasawara, S., Fujiwara, T.: Effect of CO2 enrichment on fruit growth and quality in Japanese pear (Pyrus serotina Reheder cv. Kousui).-Soil Sci. Plant Nutr. 45: 385–393, 1999.Google Scholar
  12. Korte, L.L., Williams, J.H., Specht, J.E., Sorense, R.C.: Irrigation of soybean genotypes during reproductive ontogeny. I. Agronomic responses.-Crop Sci. 27: 1197–119, 1983.Google Scholar
  13. Long, S.P., Humphries, S., Falkowski, P.G.: Photoinhibition of photosynthesis in nature.-Annu. Rev. Plant Physiol. 85: 990–995, 1994.Google Scholar
  14. Lu, C., Zhang J.: Effects of water stress on photosynthesis, chlorophyll fluorescence and photoinhibition in wheat plants.-Aust. J. Plant Physiol. 25: 883–892, 1998.Google Scholar
  15. Maxwell, S.S., Delaney, H.D. (ed.): Designing Experiments and Analyzing Data.-Wadsworth, Belmint 1989.Google Scholar
  16. Ohashi, Y., Saneoka, H., Matsumoto, K., Ogata, S., Premachandra, G.S., Fujita, K.: Comparison of water stress effects on growth, leaf water status, and nitrogen fixation activity in tropical pasture legumes siratro and desmodium with soybean.-Soil Sci. Plant Nutr. 45: 759–802, 1999.Google Scholar
  17. Ramanjulu, S., Sreenivasalu, N. Giridhara Kumar, S., Sudhakar, C.: Photosynthetic characteristics in mulberry during water stress and rewatering.-Photosynthetica 35: 259–263, 1998.Google Scholar
  18. Shangguan, Z., Shao, M., Dyckmans J.: Effects of nitrogen nutrition and water deficit on net photosynthetic rate and chlorophyll fluorescence in winter wheat.-J. Plant Physiol. 156: 46–51, 2000.Google Scholar
  19. Sharp, R.E., Davis, W.J.: Root growth and water uptake by maize plants in drying soil.-J. exp. Bot. 36: 1441–1456, 1985.Google Scholar
  20. Simmoneau, T., Habib, R., Goutouly, J.P., Huguet, J.G.: Diurnal changes in stem diameter depend upon variations in water content: Direct evidence in peach trees.-J. exp. Bot. 44: 615–621, 1993.Google Scholar

Copyright information

© Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Praha 2006

Authors and Affiliations

  1. 1.Graduate School of Biosphere ScienceHiroshima UniversityHigashi-HiroshimaJapan

Personalised recommendations