植物对乙烯的基因毒性和毒性病理反应:对作物产量的潜在影响
Edson Araujo de Almeida1, Maria Eduarda Nardes Pinto2, Ana Elisa Maehashi3
1Postgraduate Program in Chemistry, Maringá State University, Maringá 87020-900, PR, Brazil.
Toxics
|November 27, 2025
概括
新兴的环境污染物乙烯 (EtP) 通过改变抗氧化酶活性并引起氧化应激,显著损害了作物根的生长. 这种污染对农业生产力和土壤健康构成风险.
科学领域:
- 环境科学 环境科学
- 植物生物学 植物生物学
- 毒理学 毒理学 毒理学
背景情况:
- 乙基 (EtP) 是一种新兴的环境污染物,经常在农业环境中检测到.
- 土壤和水的广泛污染引发了人们对其对作物产量和农业生态系统的影响的担忧.
研究的目的:
- 研究EtP在环境相关度下在各种作物物种中的系统毒性和细胞反应.
- 确定EtP是否作为污染物影响植物生长和细胞过程.
主要方法:
- 将胡卜,西红和黄瓜种子/球泡暴露在EtP度 (1-1000 ng·L−1) 中,持续7天.
- 测量抗氧化酶活性 (catalase,APX,GPX,SOD) 和脂质过氧化.
- 对细胞循环进展,线粒线索完整性和根生长抑制的分析.
主要成果:
- 所有测试的EtP度在所有植物物种中显著改变了抗氧化酶活性.
- EtP诱导了脂质过氧化,导致胡卜,西红和黄瓜根中的活性氧物种 (ROS) 积累增加.
- ROS积累导致细胞周期延迟,线粒状变化,并显著抑制根生长.
结论:
- 暴露于EtP会引发氧化应激,并破坏作物植物的细胞过程,导致根部生长受阻.
- 调查结果表明,EtP是一种污染物,有可能对农业生产率和土壤质量产生负面影响.
- 需要进一步的研究来了解EtP污染的长期生态后果.
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