مروری بر گیاهپالایی خاکهای آلوده به فلزات سنگین
الموضوعات :محمدرضا نادری 1 , عبدالرزاق دانششهرکی 2 , رضوان نادری 3
1 - دانشجوی دکتری اکولوژی گیاهان زراعی، گروه زراعت، دانشکده کشاورزی، دانشگاه فردوسی مشهد*(مسئول مکاتبات).
2 - استادیار گروه زراعت، دانشکده کشاورزی، دانشگاه شهرکرد.
3 - دانشجوی کارشناسی ارشد علوم و تکنولوژی بذر، دانشکده کشاورزی، دانشگاه بیرجند.
الکلمات المفتاحية: فلزات سنگین, گیاهپالایی, استخراجگیاهی, تصفیهیگیاهی, تبخیرگیاهی, تثبیتگیاهی,
ملخص المقالة :
سمیت فلزات سنگین و تجمع آنها در زنجیرههای غذایی یکی از اصلیترین معضلات زیست محیطی و بهداشتی جوامع مدرن است. اگرچه امکان اصلاح خاکهای آلوده به فلزات سنگین با استفاده از تکنیکهای شیمیایی، فیزیکی و یا زیستی وجود دارد، اما روشهای فیزیکی و شیمیایی اصلاح مناطق آلوده به فلزات سنگین هزینهبر، وقتگیر و تخریبکنندهی محیط زیست میباشند. از این رو، طی سالهای اخیر دانشمندان و مهندسین درصدد طراحی و توسعهی تکنیکهای زیستی برآمدند که بتوانند مکانهای آلوده به فلزات سنگین را بدون آنکه بر حاصلخیزی و تنوع بیولوژیکی خاک اثرات سوئی داشته باشند پاکسازی و تعدیل نمایند. گیاهپالایی از جمله فناوریهای سبز و دوستدار محیطزیست است، که از لحاظ اقتصادی مقرونبهصرفه و از لحاظ انرژی کم هزینه میباشد. این فناوری دربرگیرندهی استفاده از گیاهان و ریزجانداران وابسته به آنها جهت پاکسازی و یا تثبیت آلایندههای سمی نظیر فلزات سنگین است. در مقالهی حاضر مروری کوتاه بر فناوری گیاهپالایی و تکنیکهای مختلف آن خواهیم داشت.
1- Lasat, M.M., 2002. Phytoextraction of toxic metals – A review of biological mechanisms. Journal of Environmental Quality, vol. 31, pp. 109–120.
2- Adriano, D.C., 2001. Trace Elements in Terrestrial Environments; Biochemistry, Bioavailability and Risks of Metals. Springer-Verlag. New York.
3- Kabata-Pendias, A., 2001. Trace Elements in Soils and Plants. CRC Press, Boca Raton, FL. pp. 413.
4- Singh, O.V., Labana, S., Pandey, G., Budhiraja, R., Jain, R.K., 2003. Phytoremediation: an overview of metallicion decontamination from soil. Applied Microbiology and Biotechnology, vol. 61, pp. 405–412.
5- Agrawal, V., Sharma K., 2006. Phytotoxic effects of Cu, Zn, Cd and Pb on in vitro regeneration and concomitant protein changes in Holarrhena antidysentrica. Plant Biolology, Vol. 50, pp. 307-310.
6- Majer, B.J., Tscherko, D., Paschke, A., 2002. Effects of heavy metal contamination of soils on micronucleus induction in Tradescantia and on microbial enzyme activities: a comparative investigation. Mutation Research, vol. 515, pp. 111-124.
7- Jorge, L., Gardea-Torresdeya, B., Jose, R., Peralta-Videab, G., De la Rosaa, J.G., 2005. Phytoremediation of heavy metals and study of the metal coordination by X-ray absorption spectroscopy. Coordination Chemistry Reviews, vol. 249, pp. 1797–1810.
8- Lone, M.I., Li, H., Zhen, P.J., Stoffella, E., Yang, X., 2008. Phytoremediation of heavy metal polluted soils and water: Progresses and perspectives. Journal of Zhejiang University Sci B, vol. 9, pp. 210-220.
9- Baudouin, C., Charveron, M., Tarrouse, R., Gall, Y., 2002. Environmental pollutants and skin cancer. Cell Biology and Toxicology, Vol. 18, pp. 341–348.
10- World Health Organization., 1997. Inorganic lead. Environmental Health Criteria 165. International Programme on Chemical Safety, WHO, Geneva, Switzerland.
11- Yang, X.E., Long, X.X., Calvert, D.V., Stofella, P.J., 2004. Cadmium tolerance and hyperaccumulation in a new Zn-hyperaccumulating plant species (Sedium alfredii Hance). Plant Soil, vol. 259, pp. 181–189.
12- Ward, O.P., Singh, A., 2004. Soil bioremediation and phytoremediation An overview. In: Singh, A., Ward, O.P. (eds), Applied bioremediation and phytoremediation. Springer, Berlin, vol. 1, pp. 1-11.
13- Cho, M., Chardonnens, A.N., Dietz, K.J., 2003. Differential heavy metal tolerance of Arabidopsis halleri and Arabidopsis thaliana: a leaf slice test. New Phytologist, vol. 158, pp. 287-293.
14- McNair, M.R., Tilstone, G.H., Smith, S.S., 2000: The genetics of metal tolerance and accumulation in higher plants. - In: Terry, N., Banuelos, G. (eds), Phytoremediation of Contaminated Soil and Water. Lewis Publishers, Boca Raton. pp. 235-250.
15- Shah, K., 2007. Metal hyperaccumulation and bioremediation. Biologia plantarum, vol, 51, pp. 618-634.
16- Pence, N.S., Larsen, P.B., Ebbs, S.D., Letham, D.L., Lasat, M.M., Garvin, D.F., Eide, D., Kochian, L.V., 2000. The molecular physiology of heavy metal transport in zinc/cadmium hyperaccumulator Thlaspi caerulescens. Proceedings of the National Academy of Sciences of the United States of America, vol. 97, pp. 4956-4960.
17- Schmoger, M.C., Oven, M., Grill, E., 2000. Detoxification of arsenic by phytochelatins in plants. Plant Physiology, vol. 128, pp. 793-801.
18- Hartley-Whitaker, J., Woods, C., Meharg, A.A., 2002. Is differential phytochelatin production related to decreased arsenate influx in arsenate tolerant Holcus lanatus? New Phytologist, vol. 155, pp. 219-225.
19- Drazic, G., Mihalovic, N., Lojic, M., 2006. Cadmium concentration in Medicago sativa seedlings treated with salicylic acid. Plant Biolology, vol. 50, pp. 239-244.
20- Broos, K., Beyens, H., Smolders, E., 2005. Survival of rhizobia in soil is sensitive to elevated zinc in the absence of the host plant. Soil Biology and Biochemistry. vol. 37, pp. 573–579.
21- Baker, A.J.M., McGrath, S.P., Reeves, R.D., Smith, J.A.C., 2000. Metal Hyperaccumulator plants: A review of the ecology and physiology of a biochemical resource for phytoremediaton of metal polluted soil. In: Baneulos, T.N.G. (Ed), Phytoremediation of Contaminated Soil and Water. Lewis Publications, Boca Raton, pp. 85-107.
22- Thangavel, P., Subhuram, C.V., 2004. Phytoextraction – Role of hyper accumulators in metal contaminated soils. Proceedings of the Indian National Science Academy. Part B, vol. 70, pp. 109–130.
23- Winter Sydnor, M.E., Redente, E.F., 2002. Reclamation of high elevation, acidic mine waste with organic amendments and topsoil. Journal of Environmental Quality, vol. 31, pp. 1528-1537.
24- Tordoff, G.M., Baker, A.J.M., Willis, A.J., 2000. Current approaches to the revegetation and reclamation of metalliferous mine wastes. Chemosphere, vol. 41, pp. 219–228.
25- Berti, W.R., Cunningham, S.D., 2000. Phytostabilization of metals. In: Raskin, I., Ensley, B.D. (Eds.), Phytoremediation of toxic metals: Using plants to clean-up the environment. Wiley. New York, pp. 71–88.
26- Ghosh, M., Singh, S.P., 2005. A review on phytoremediation of heavy metals and utilization of its by-products. Applied Ecology and Environmental Research, vol. 3, pp. 1–18.
27- Yoon, J., Cao, X., Zhou, Q., Ma, L.Q., 2006. Accumulation of Pb, Cu, and Zn in native plants growing on a contaminated Florida site. Science of The Total Environment, vol. 368, pp. 456–464.
28- Prasad, M.N.V., Freitas, H., 2003. Metal hyperaccumulation in plants – Biodiversity prospecting for phytoremediation technology. Electronic Journal of Biotechnology, vol. 6, pp. 275–321.
29- Dushenkov, S., Kapulnik, Y., 2000. Phytofilitration of metals. In: Raskin, I., Ensley, B.D. (Eds.), Phytoremediation of toxic metals – Using plants to clean-up the environment. Wiley, New York, pp. 89–106.
30- Pilon-Smits, E.A.H., 2005. Phytoremediation. Annual Review of Plant Biology, vol. 56, pp. 15–39.
31- Peer, W., Baxter, I., Richards, E., Freeman, J., Murphy, A., 2005. Phytoremediation and hyperaccumulator plants. In: Tamas, M., Martinoia, E. (eds), Molecular Biology of Metal Homeostasis and Detoxification. Springer, Berlin, Topics in Current Genetics, vol. 14, pp. 299-340.
32- Blaylock, M.J., Huang, J.W., 2000. Phytoextraction of metals. In: Raskin, I., Ensley, B.D. (Eds.), Phytoremediation of toxic metals: Using plants to clean-up the environment. Wiley, New York, pp. 53–70.
33- McGrath, S.P., Zhao, F.J., Lombi, E., 2002. Phytoremediation of metals, metalloids, and radionuclides. Advances in Agronomy, vol. 75, pp. 1–56.
34- Bizily, S.P., Rugh, C.L., Summers, A.O., Meagher, R.B., 1999. Phytoremediation of methylmercury pollution: merB expression in Arabidopsis thaliana confers resistance to organomercurials. Proceedings of the National Academy of Sciences of the United States of America, vol. 96, pp. 6808-6813.
35- Moffat, A.S., 1995. Plants proving their worth in toxic metal cleanup. Science, vol. 269, pp. 302-303.
36- Sykes, M., Yang, V., Blankenburg, J., Abu Bakr, S., 1999. Biotechnology: working with nature to improve forest resources and products. International Conference of environment, vol. 29, pp. 631-637.
37- Belimov, A.A., Safronova, V.I., Mimura, T., 2002. Response of spring rape to inoculation with plant growth-promoting rhizobacteria containing 1-aminocyclopropane-1-carboxylate deaminase depends on nutrient status of the plant. Canadian Journal of Microbiology, vol. 48, pp. 189–199.
38- Gratao, P.L., Prasad, M.N.V., Cardoso, P.F., Lea, P.J., Azevedo, R.A., 2005. Phytoremediation: green technology for the clean up of toxic metals in the environment. Brazilian Journal of Plant Physiology, vol. 17, pp. 53-64.