Photosynthetica 1998, 35(2):259-263 | DOI: 10.1023/A:1006919009266

Photosynthetic Characteristics in Mulberry during Water Stress and Rewatering

S. Ramanjulu1, N. Sreenivasalu1, S. Giridhara Kumar1, C. Sudhakar1
1 Department of Botany, Sri Krishnadevaraya University, Anantapur, India

Three-month-old plants of mulberry (Morus alba L. cv. Kanva-2) were subjected to a drought stress by withholding water supply. As the leaf water potential (ΨW) was dropping progressively with the severity of treatment and increasing stress duration, the values of leaf area, dry mass accumulation, total chlorophyll (Chl) content, net photosynthetic rate (PN), stomatal conductance (gs), and transpiration rate (E) were declined. The photosystem 2 (PS2) photochemical efficiency significantly decreased only at a severe stress treatment. The intercellular CO2 concentration (Ci) remained unaltered during a mild stress, yet it increased under moderate and severe stresses. The Ci/gs ratio reflected the mesophyll efficiency during water stress. Rewatering of the plants led to an almost complete recovery of PN, E, and gs, indicating that a short-term stress brings about reversible effects only.

Additional key words: intercellular CO2 concentration; leaf area; leaf dry mass; Morus alba; net photosynthetic rate; photosystem 2; relative water content; stomatal conductance; transpiration rate; water relations

Prepublished online: June 1, 1998; Published: January 1, 1998  Show citation

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Ramanjulu, S., Sreenivasalu, N., Giridhara Kumar, S., & Sudhakar, C. (1998). Photosynthetic Characteristics in Mulberry during Water Stress and Rewatering. Photosynthetica, 35(2), 259-263. doi: 10.1023/A:1006919009266
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    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. Behboudian, M.H.: Response of egg plant to drought. II. Gas exchange parameters.-Scientia Hort. 7: 311-317, 1977. Go to original source...
    3. Castrillo, M., Fernandez, D.: Ribulose bis-phosphate carboxylase and phosphoenolpyruvate carboxylase activities, chlorophyll and protein contents of two hybrids under water stress.-Maydica 35: 67-72, 1990.
    4. Castrillo, M., Trujillo, I.: Ribulose-1,S-bisphosphate carboxylase activity and chlorophyll and protein contents in two cultivars of French bean plants under water stress and rewatering.-Photosynthetica 30: 175-181, 1994.
    5. Ceulemans, R., Impens, I., Ng, A.P.: Photosynthesis, stomatal conductance and leaf water potential during water stress situations in young rubbertrees (Hevea hrasiliensis) under tropical conditons.-In: Marcelle, R., Clijsters, H., Von Poucke, M. (ed.): Effects of Stress on Photosynthesis. Pp. 111-119. Martinus Nijhoff/Dr W. Junk Publ., The Hague-Boston-London 1983. Go to original source...
    6. Chaves, M.M.: Effects of water deficits on carbon assimilation.-J. exp. Bot. 42: 1-16, 1991. Go to original source...
    7. Cornic, G., Ghashgaie, J., Genty, B., Briantais, J.-M.: Leaf photosynthesis is resistant to a mild drought stress.-Photosynthetica 27: 295-309, 1992.
    8. Dr\(\mathop {\text{a}}\limits_, \)¿kiewicz, M.: Chlorophyllase: occurrence, functions, mechanism of action, effects of external and internal factors.-Photosynthetica 30: 321-331, 1994.
    9. Hsiao, T.C.: Plant responses to water stress.-Annu. Rev. Plant Physiol. 24: 519-570, 1973. Go to original source...
    10. Kicheva, M.I., Tsonev, T.D., Popova, L.P.: Stomatal and nonstomatal limitations to photosynthesis in two wheat cultivars subjected to water stress.-Photosynthetica 30: 107-116, 1994.
    11. Lakshmi, A., Ramanjulu, S., Veeranjaneyulu, K., Sudhakar, C.: Effect of NaCl on photosynthesis parameters in two cultivars of mulberry.-Photosynthetica 32: 285-289, 1996.
    12. Meyer, S., de Kouchkovsky, Y.: Electron transport, Photosystem-2 reaction centers and chlorophyll-protein complexes of thylakoids of drought resistant and sensitive Lupin plants.-Photosynth. Res. 37: 49-60, 1993. Go to original source...
    13. Meyer, S., Phung Nhu Hung, S., Trémoliéres, A., de Kouchkovsky, Y.: Energy coupling, membrane lipids and structure of thylakoids of lupin plants submitted to water stress.-Photosynth. Res. 32: 95-107, 1992.
    14. Nandwal, A.S., Bharti, S., Kuhad, M.S., Sheoran, I.S.: Water relations and gaseous exchange studies in pigeonpea under depleting soil water potential.-Plant Physiol. Biochem. 29: 75-78, 1991.
    15. Raggi, V.: Changes in water relations and in some physiological functions of bean under very light osmotic shock induced by polyethylene glycol.-Physiol. Plant. 84: 537-548, 1992. Go to original source...
    16. Sheshashayee, M.S., Krishna Prasad, B.T., Nataraj, K.N., Shankar, A.G., Prasad, T.G., Udayakumar, M.: Ratio of intercellular CO2 concentration to stomatal conductance is a reflection of mesophyll efficiency.-Curr. Sci. 70: 672-675, 1996.
    17. Sudhasundari, D., Raghavendra, A.S.: Sensitivity of photosynthesis by spinach chloroplast membrane to osmotic stress in vitro. Rapid inhibition of O2 evolution in presence of magnesium. Photosynth. Res. 23: 325-330, 1990. Go to original source...
    18. Turner, N.C.: Techniques and experimental approaches for the measurement of plant water status.-Plant Soil 58: 339-366, 1981. Go to original source...

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