寻找的食:超积累和非积累植物物种之间的比较
Sofia Montanari1, Mirko Salinitro2, Andrea Simoni3
1Department of Biological Geological and Environmental Sciences, University of Bologna, Via Irnerio 42, 40126, Bologna, Italy.
Scientific reports
|June 30, 2023
概括
过度积累器植物积极寻找. 斯坦利亚皮纳塔 (Stanleya pinnata) 证明了对富含酸盐的土壤的根性食,与其他测试物种不同.
科学领域:
- 植物生物学 植物生物学
- 环境科学 环境科学
- 生物地质化学生物地质化学
背景情况:
- (Se) 过度积累器将Se集中在天线部分 (>100 mg kgDW-1).
- 根源食,即积极寻找土壤Se,人们对其了解甚少.
- 在土壤中以化和酸的形式存在.
研究的目的:
- 调查局部化的Se丰富对根架构的影响.
- 比较Se根在两个高蓄积体 (Stanleya pinnata,Astragalus bisulcatus) 和两个非蓄积体 (Brassica juncea,Medicago sativa) 中进行食.
- 确定植物是否可以检测和寻找化或酸.
主要方法:
- 使用的树根盒,其中一半是控制土壤,另一半是Se (化/酸).
- 在受控条件下,在土壤接口上种植苗三周.
- 分析了根分布和架构,以应对局部化的Se丰富.
主要成果:
- 斯坦利亚皮纳塔 (Stanleya pinnata) 在酸盐丰富的土壤中表现出显著的根生长 (76%).
- 在对照/对照和矿/对照处理中,S. pinnata的根密度相同.
- 阿斯特拉加勒斯双树,布拉西卡树和麦迪卡戈三叶树没有显示偏好的根分布.
- 非蓄积植物没有表现出形态或Se-积累差异.
结论:
- 只有Stanleya pinnata表现出对,特别是酸盐的积极根源食.
- 对于Se的根源食行为是特定于物种的.
- 非蓄积器植物缺乏检测和食土壤的能力.
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