Impacts of different concentrations of main pollutants from the synthetic leather industry on the physiology and ecology of Pinus taiwanensis

doi:10.3724/SP.J.1258.2011.00066

Abstract

Abstract:

Aims Vegetation in developed areas of China has been polluted by dimethylformamide (DMF) and toluene (TOL), solvents used in the synthetic leather industry; however, little research has been done on the impact of these pollutants on the physiology and ecology of trees.
Methods In this paper, we studied the pollution effects of DMF and TOL on the physiological and ecological characteristics of Pinus taiwanensis.
Important findings DMF began to induce an increase in total soluble sugars and glutathione (GSH) in the plant at low concentration. As the concentration of DMF increased, total soluble sugars and total antioxidant compounds (T-AOC) decreased and soluble proteins and malonaldehyde (MDA) increased, indicating that DMF started to have toxic effects on the plant. TOL promoted chlorophyll production at low concentration. As its concentration increased, the content of chlorophyll and MDA decreased, whereas that of total soluble sugars, proteins and T-AOC increased. When TOL reached a higher concentration, the content of chlorophyll and T-AOC decreased and that of MDA increased significantly, suggesting the occurrence of toxic effects. DMF may inhibit the facilitative effects of TOL at low concentration when they were combined. Their combined effects were similar to those of DMF at some concentrations. However, when the combined pollutants reached a rather high concentration, the content of MDA increased and the toxic effects were more pronounced than those of DMF alone. This study suggested that chemical pollutants at low concentration can be tolerated by P. taiwanensis whereas high concentrations are harmful to growth.

Key words: organic pollution, Pinus taiwanensis, stress, toxic effect

CHEN Mao-Quan, WANG Gen-Xuan, LIU Shu-Xin, BAI Yan-Yuan, YING Jun-Hui, CHEN Bing-Hong, WANG Dong-Ming. Impacts of different concentrations of main pollutants from the synthetic leather industry on the physiology and ecology of Pinus taiwanensis[J]. Chin J Plant Ecol, 2011, 35(1): 66-72.

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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2011.00066

https://www.plant-ecology.com/EN/Y2011/V35/I1/66

Figures/Tables 4

Table 1 The basic physical and chemical properties of soil (mean ± SD)

pH	有机质 Organic matter (g·kg^-1)	速效钾 Available K (%)	有效磷 Available P (g·kg^-1)	碱解氮 Alkaline N (g·kg^-1)
6.67 ± 0.01	15.17 ± 0.14	7.00 ± 0.53	58.73 ± 0.21	117.10 ± 0.89

Fig. 1 Effect of dimethylformamide (DMF) and toluene (TOL) on the chlorophyll content of needle of Pinus taiwanensis.

Fig. 2 Effect of dimethylformamide (DMF) and toluene (TOL) on the total soluble sugar (A) and soluble protein (B) content of needle of Pinus taiwanensis.

Fig. 3 Effect of dimethylformamide (DMF) and toluene (TOL) on the glutathione (GSH) (A), superoxide dismutase (SOD) (B), total antioxidant capacity (T-AOC) (C) and malonaldehyde (MDA) (D) content of needle of Pinus taiwanensis.

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