JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.2 P.96-99

http://doi.org/10.1631/jzus.2005.B0096

Gama-aminobutyric acid accumulation in Elsholtzia splendens in response to copper toxicity

Author(s): YANG Xiao-e, PENG Hong-yun, TIAN Sheng-ke
Affiliation(s): Ministry of Education Key Lab of Environment, Remediation and Ecosystem Health, School of Natural Resources and Environmental Science, Zhejiang University, Hangzhou 310029, China
Corresponding email(s): xyang@zju.edu.cn, penghongyun@zju.edu.cn
Key Words: Accumulation, Copper toxicity, Elsholtzia splendens, Gama-aminobutyric acid (GABA)

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Abstract: A solution with different Cu supply levels was cultured to investigate gama-aminobutyric acid (GABA) accumulation in Elsholtzia splendens, a native Chinese Cu-tolerant and accumulating plant species. Increasing Cu from 0.25 to 500 μmol/L significantly enhanced levels of GABA and histidine (His), but considerably decreased levels of aspartate (Asp) and glutamate (Glu) in the leaves. The leaf Asp level negatively correlated with leaf Cu level, while leaf GABA level positively correlated with leaf Cu level. The leaf Glu level negatively correlated with leaf GABA level in Elsholtzia splendens. The depletion of leaf Glu may be related to the enhanced synthesis of leaf GABA under Cu stress.

Reference

[1] Baker, A.J.M., Proctor, J., 1990. The influence of cadmium, copper, lead, and zinc on the distribution and evolution of metallophytes in British Isles. Plant Systematics and Evolution, 173:91-108.

[2] Beuve, N., Rispail, N., Laine, P., Cliquet, J.B., Ourry, A., Deunff, E.L., 2004. Putative role of γ-aminobutyric acid (GABA) as a long-distance signal in up-regulation of nitrate uptake in Brassica napus L. Plant Cell and Environment, 27:1035-1046.

[3] Jiang, L.Y., Shi, W.Y., Yang, X.E., Fu, C.X., Chen, W.G., 2002. Cu hyperaccumulators in mining area. Chinese Journal of Applied Ecology, 13(7):906-908 (in Chinese).

[4] Kinnersley, A.M., Fang, L., 2000. Receptor modifiers indicate that 4-aminobutyric acid (GABA) is a potential modulator of ion transport in plants. Plant Growth Regulation, 32:65-76.

[5] Krämer, U., Cotter-Howells, J.D., Charnock, J.M., Baker, A.J.M., Smith, J.A.C., 1996. Free histidine as a metal chelator in plants that accumulate nickel. Nature, 379:635-638.

[6] Krämer, U., Smith, R.D., Wenzel, W.W., Raskin, I., Salt, D.E., 1997. The role of metal transport and tolerance in nickel hyperaccumulation by Thlaspi goesingense Halacsy. Physiologia Plantarum, 115:1641-1650.

[7] Satyanarayan, V., Nair, P.M., 1990. Metabolism, enzymology and possible roles of 4-aminobutyrate in higher plants. Phytochemistry, 29:367-375.

[8] Schaeffer, G.W., Sharpe, F.T., 1997. Free and bound amino acids and proteins in developing grains of rice with enhanced lysine/proteins. Theoretical and Applied Genetics, 94:878-881.

[9] Scott-Taggart, C.P., Cauwenberghe, V.O.R., McLean, M.D., Shelp, B.J., 1999. Regulation of gama-aminobutyric acid synthesis in situ by glutamate availability. Physiologia Plantarum, 106:363-369.

[10] Shelp, B.J., Bown, A.W., McLean, M.D., 1999. Metabolism and functions of gama-aminobutyric acid. Trends in Plant Science, 4(11):446-452.

[11] Snedden, W.A., Chung, I., Pauls, R.H., Bown, A.W., 1992. Proton/L-glutamate symport and the regulation of intracellular pH isolated mesophyll cells. Plant Physiology, 99:665-671.

[12] Van Assche, F., Clijsters, H., 1990. Effects of metals on enzyme activity in plants. Plant Cell and Environmental, 13:195-206.

[13] Verkleij, J.A.C., Schat, H., 1990. Mechanisms of Metal Tolerance in Higher Plants. In: Shaw, A.J. (Ed.), Heavy Metal Tolerance in Plants: Evolutionary Aspects. CRC Press, Boca Raton, FL, p.179-193.

[14] Yang, X.E., Shi, W.Y., Fu, C.X., Yang, M.J., 1998. Copper Hyperaccumulators of Chinese Native Plants: Characteristics and Possible Use for Phytoremediation. In: Bassam, N.E.L. (Ed.), Sustainable Agriculture for Food, Energy and Industry. James & James, Science Publishers Ltd., London, p.484-489.

[15] Yang, M.J., Yang, X.E., Roemheld, V., 2002. Growth and nutrient composition of Elsholtzia splendens nakai under copper toxicity. Journal of Plant Nutrition, 25(7):1359-1375.

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