Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (3): 521-529.DOI: 10.3969/j.issn.1004-1524.20240168

• Crop Science • Previous Articles     Next Articles

Effects of combined copper-phenanthrene pollution on physiological characteristics and pollutant accumulation of rice roots at tillering stage

SONG Xinlu1(), FAN Shuhong2, WU Guangqi1, ZHAN Mengqi1, HOU Qian1, LI Mingyue1, XU Yan1,*()   

  1. 1. School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, Shandong, China
    2. Zaozhuang Agricultural and Rural Business Development Center, Zaozhuang 277099, Shandong, China
  • Received:2024-02-29 Online:2025-03-25 Published:2025-04-02

Abstract:

Soil pollution often involves a combination of heavy metals and polycyclic aromatic hydrocarbon, pollutants enter the plant through the root system, seriously endangering the safety of crop production. In order to study the effect of compound pollution on crops, pot experiment was carried out to analyze the effects of single additions of phenanthrene and copper, as well as their combined addition, on rice physiological and biochemical properties and copper and phenanthrene accumulation in rice roots at tillering stage. The results showed that the electrolyte permeability of rice under combined pollution of phenanthrene and copper was 16.08 percentage points higher than phenanthrene treatment; the activities of peroxidase and catalase in rice root were significantly (P<0.05) decreased under the pollution treatment, but there was no significant difference between combined pollution treatment and single pollution treatment. The content of phenanthrene in rice roots and rhizosphere under combined pollution of copper and phenanthrene were 0.59 mg·kg-1 and 6.51 mg·kg-1, respectively, which were significantly (P<0.05) higher than those in phenanthrene treatment (0.01 mg·kg-1 and 3.63 mg·kg-1). The content of copper in the rice roots was ranged from 48.28 to 74.18 mg·kg-1, there was no significant difference in copper content between the combined pollution treatment and the single pollution treatment. In conclusion, copper-phenanthrene combined pollution did not enhance the inhibition of antioxidant enzyme activities in rice, significantly increased the content of phenanthrene in rice root and rhizosphere soil, and aggravated phenanthrene pollution.

Key words: rice, transport and transfer, copper, phenanthrene, combined pollution

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