Abstract
The effects of lead toxicity on leaf gas exchange, chlorophyll content, chlorophyll fluorescence, chloroplast ultrastructure, and opening of stomata were examined in tobacco (Nicotiana tabacum L.) plants. Plants were grown in a growth chamber for 7 d in Hoagland nutrient solution supplemented with 0.0 (control), 5, 10, 25, 50, 100, 300 and 500 μM Pb(NO3)2. Plants treated with 5, 10, and 25 μM Pb(NO3)2 exhibited no abnormalities. Root and shoot growth, net photosynthetic rate and stomatal conductance were significantly reduced in plants treated with 100, 300 and 500 μM Pb(NO3)2. In plants treated with 500 μM Pb(NO3)2, the majority of stomata were closed. The effect of Pb(NO3)2 on chlorophyll content and chlorophyll fluorescence parameters was negligible. However, in plants exposed to 100, 300, and 500 μM Pb(NO3)2, the mesophyll cells showed altered chloroplasts with disrupted thylakoid membranes.
Similar content being viewed by others
Abbreviations
- Chl:
-
chlorophyll
- E:
-
transpiration rate
- Fs :
-
steady state chlorophyll fluorescence
- Fm :
-
maximum chlorophyll fluorescence
- Fv :
-
variable fluorescence
- Fv/Fm :
-
maximum PS 2 quantum yield
- gs :
-
stomatal conductance
- PN :
-
net photosynthetic rate
- PS 2:
-
photosystem 2
References
Boonyapookana, B., Parkpian, P., Techapinyawat, S., Delaune, R.D., Jugsujinda, A.: Phytoaccumulation of lead by sunflower (Helianthus annus), tobacco (Nicotiana tabacum), and vetiver (Vetiveria zizanioides). — J. environ. Sci. Health 40: 117–137, 2005.
Burton, K.W., Morgan, E., Roig, A.: The influence of heavy metals on the growth of Sitka-spruce in South Wales forests. II. Greenhouse experiments. — Plant Soil 78: 271–282, 1984.
Burzyński, M., Klobus, G.: Changes of photosynthetic parameters in cucumber leaves under Cu, Cd, and Pb stress. — Photosynthetica 42: 505–510, 2004.
Drazkiewicz, M.: Chlorophyll-occurrence, functions, mechanism of action, effects of internal and external factors. — Photosynthetica 30: 321–331, 1994.
Epstein, M.A., Holt, S.J.: The localization by electron microscopy of hela cell surface enzymes splitting adenosine triphosphate. — J. Cell Biol. 19: 325–326, 1963.
Eun, S.O., Youn, H.S., Lee, Y.: Lead disturbs microtubule organization in the root meristem of Zea mays. — Physiol. Plant 110: 357–365, 2000.
Haussling, M., Jorns, C.A., Lehmbecker, G., Hecht-Buchholaz, C., Marschner, H.: Ion and water uptake in relation to root development of Norway spruce (Picea abies (L.) Karst). — J. Plant Physiol. 133: 486–491, 1988.
Ghoshroy, S., Freedman, K., Lartey, R., Citovsky, V.: Inhibition of plant viral systemic infection by non-toxic concentrations of cadmium. — Plant J.l 13: 591–602, 1998.
Kosobrukhov, A., Knyazeva, I., Mudrik, V.: Plantago major plants responses to increase content of lead in soil: growth and photosynthesis. — Plant Growth Regul. 42: 145–151, 2004.
Krupa, Z., Baszyński, T.: Some aspects of heavy metals toxicity towards photosynthetic apparatus-direct and indirect effects on light and dark reactions. — Acta Physiol. Plant 17: 177–190, 1995.
Kummerová, M., Zezulka, Š., Kráľová, K., Masarovičová, E.: Effects of zinc and cadmium on physiological and production characteristic in Matricaria recutita. — Biol. Plant. 54: 308–314, 2010.
Molas, J.: Changes in morphological and anatomical structure of cabbage (Brassica oleracea L.) outer leaves and in ultrastructural of their chloroplasts caused by in vitro excess of nickel. — Photosynthetica 34: 513–522, 1997.
Moussa, H.R., El-Gamal, S.M.: Effect of salicylic acid pretreatment on cadmium toxicity in wheat. — Biol. Plant. 54: 315–320, 2010.
Påhlsson, A.B.: Toxicity of heavy metals (Zn, Cu, Cd, Pb) to vascular plants. — Water Air Soil Pollut. 47: 287–319, 1989.
Peng, H.Y., Tian, S.K., Yang, X.E.: Changes of root morphology and Pb uptake by two species of Elsholtzia under Pb toxicity. — J. Zhejiangn Univ. Sci. 6: 546–552, 2005.
Poschenrieder, C., Barcelo, J.: Water relation in heavy metals stressed plants. — In: Prasad, M.N.V., Hagemayer, J. (ed.): Heavy Metals Stress in Plants. From Molecules to Ecosystems. Pp. 207–231. Springer-Verlag, Berlin — Heidelberg — New York 1999.
Ratnayaka, H.H., Molin, W.T., Sterling, T.M.: Physiological and antioxidant responses of cotton and spurred anoda under interference and mild drought. — J. exp. Bot. 54: 2293–2305, 2003.
Reynolds, E.S.: The use of lead citrate at high pH as an electron-opaque stain in electron microscopy. — J. Cell Biol. 17: 208–212, 1963.
Sarvari, E., Gaspar, L., Fodor, F., Cseh, E., Kropfl, K., Varga, A., Baron, M.: Comparison of the effects of Pb treatment on thylakoid development in poplar and cucumber plants. — Acta biol. Szeged 46: 163–165, 2002.
Sharma, P., Dubey, R.S.: Lead toxicity in plants. — Braz. J. Plant Physiol. 17: 35–52, 2005.
Siedlecka, A., Krupa, Z.: Cd/Fe interaction in higher plants-its consequences for the photosynthetic apparatus. — Photosynthetica, 36: 321–331, 1999.
Spurr, A.R.: A low-viscosity epoxy resin embedding medium for electron microscopy. — J. ultrastruct. Res. 26: 31–43, 1969.
Stiborová, M., Hromádková, R., Leblová, S.: Effects of ions of heavy metals on the photosynthetic characteristics of maize (Zea maize). — Biol. Plant. 4: 1221–1228, 1986.
Vázquez, M.D., Poschenrieder, C., Barceló, J.: Ultrastructural effects and localization of low cadmium concentrations in bean roots. — New Phytol. 120: 215–226, 1992.
Wierzbicka, M.: Resumption of mitotic activity in Allium cepa root tips during treatment with lead salts. — Environ. exp. Bot. 34: 173–180, 1994.
Wierzbicka, M.: Lead in the apoplast of Allium cepa L. root tips — ultra structural studies. — Plant Sci. 133: 105–119, 1998.
Author information
Authors and Affiliations
Corresponding author
Additional information
Acknowledgments: This work was supported by a research grant (No.G200803150008) awarded by the Sigma Xi Grant-in-Aid of Research Program. The authors gratefully acknowledge the assistance of Nour Abdo in experiment preparation.
Rights and permissions
About this article
Cite this article
Alkhatib, R., Maruthavanan, J., Ghoshroy, S. et al. Physiological and ultrastructural effects of lead on tobacco. Biol Plant 56, 711–716 (2012). https://doi.org/10.1007/s10535-012-0241-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10535-012-0241-9