浙江农业学报 ›› 2025, Vol. 37 ›› Issue (3): 521-529.DOI: 10.3969/j.issn.1004-1524.20240168

• 作物科学 • 上一篇    下一篇

铜-菲复合污染对分蘖期水稻根系生理特性和污染物积累的影响

宋欣录1(), 范书红2, 武桄旗1, 展梦琪1, 侯倩1, 李明月1, 徐艳1,*()   

  1. 1.青岛大学 环境科学与工程学院,山东 青岛 266071
    2.枣庄市农业农村事业发展中心,山东 枣庄 277099
  • 收稿日期:2024-02-29 出版日期:2025-03-25 发布日期:2025-04-02
  • 作者简介:宋欣录(1999—),男,山东泰安人,硕士研究生,研究方向为土壤微生物学。E-mail:song1xinlu@163.com
  • 通讯作者: * 徐艳,E-mail:yanxu@qdu.edu.cn
  • 基金资助:
    国家自然科学基金(42177028);山东省高等学校青创人才引育计划(DC2000000961)

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

摘要:

土壤污染中经常存在重金属与多环芳烃复合污染的情况,污染物通过根系进入植物体内,严重危害作物生产安全。为探究复合污染对作物的影响,采用盆栽试验,研究菲、铜和铜-菲复合污染下分蘖期水稻生理生化特性和根系中铜与菲的积累特征。结果表明,复合污染下水稻的电解质渗透率较菲污染处理高出16.08百分点;污染处理的水稻根系过氧化物酶和过氧化氢酶活性均显著(P<0.05)降低,但复合污染与单一污染处理之间无显著差异。复合污染下水稻根内与根际的菲含量分别为0.59 mg·kg-1和6.51 mg·kg-1,显著(P<0.05)高于菲污染处理(0.01 mg·kg-1和3.63 mg·kg-1);水稻根系的铜含量为48.28~74.18 mg·kg-1,复合污染与单一污染处理的铜含量无显著差异。综上,铜-菲复合污染并未加强对水稻抗氧化酶活性的抑制,但显著增加了水稻根系与根际土壤中的菲含量,加重菲污染。

关键词: 水稻, 迁移转化, 铜, 菲, 复合污染

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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