父母对草甘的暴露使番茄后代获得增强的生长和承受压力的优势
Francisca Moreira Cruz1, Bruno Sousa1, Fernanda Fidalgo1
1GreenUPorto - Sustainable Agrifood Production Research Centre/INOV4AGRO, Biology Department, Faculty of Sciences of the University of Porto, Rua do Campo Alegre s/n 4169-007 Porto, Portugal.
概括
在母番茄植物中,草药草甘 (GLY) 暴露影响了它们的后代.
科学领域:
- 农业科学 农业科学
- 环境毒理学环境毒理学
- 植物生理学 植物生理学
背景情况:
- 杀虫剂的使用对作物产量至关重要,但也引发了环境问题.
- 草甘 (GLY) 除草剂土壤残留物对作物的长期影响尚不清楚.
- 调查GLY的代际影响对于风险评估至关重要.
研究的目的:
- 为了确定母番茄植物中的草甘 (GLY) 暴露是否会在后代中引起代际反应.
- 分析GLY对生物识别生长,氧化应激和抗氧化剂代谢跨代的影响.
- 评估父母GLY暴露对后代耐受性和生理反应的影响.
主要方法:
- 番茄植物 (Solanum lycopersicum L.) 在不同世代 (F0父母及其后代) 暴露于不同的GLY度 (0,2.5,5.0毫克/公斤).
- 对后代进行了生长参数 (根和芽长度),氧化应激指标 (H2O2,脂质过氧化) 和抗氧化剂代谢 (proline,酶活性) 的分析.
- 在对照父母的后代和暴露于GLY的父母的后代之间进行了比较分析.
主要成果:
- 草甘 (GLY) 对所有植物的根和芽生长产生了负面影响,但暴露于GLY的父母的后代显示出减少了生长抑制.
- 父母GLY暴露减轻了后代的氧化应激,由较低的H2O2和脂质过氧化证明,并减少了对抗氧化酶上调调节的需求.
- 受GLY治疗的父母的后代表现出更好的耐受性,具体反应根据父母和后代的GLY暴露水平而有所不同.
结论:
- 番茄植物对草甘 (GLY) 土壤残留物表现出代际反应,受父母暴露的影响.
- 父母暴露于GLY可以给后代带来一定程度的耐受性,改变他们的生理反应.
- 调查结果强调了在农业化学品风险评估中考虑跨代影响的重要性.
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