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番茄植物的叶片吸收:比较来源和辅助剂使用的影响
Eduardo Santos1, Gabriel Sgarbiero Montanha1,2, Luís Fernando Agostinho3
1Group of Specialty Fertilizers and Plant Nutrition, Laboratory of Nuclear Instrumentation, Centre for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário, 303, Piracicaba 13400-970, Brazil.
Plants (Basel, Switzerland)
|July 29, 2023
概括
(Ca) 缺乏会影响水果的质量. 叶子化 (CaCl2) 的叶子吸收率最高,辅助剂改变了番茄植物中不同Ca来源的吸收动态和途径.
科学领域:
- 植物生理学 植物生理学
- 农业科学 农业科学
- 生物化学 生化学
背景情况:
- 缺乏会对水果的质量和保质期产生负面影响.
- 叶喷是一种常见的做法,但其在植物叶子中的吸收动态尚不清楚.
- 了解吸收对于改善水果生产和储存至关重要.
研究的目的:
- 为了研究番茄植物中不同 (Ca) 来源的叶子吸收动态.
- 评估辅助剂对Ca吸收和植物皮质结构的影响.
- 为了确定 (Sr2+) 是否可以在叶子吸收研究中作为Ca的可靠代理物.
主要方法:
- 在体内微探针X射线光 (micro-XRF) 用于监测CaCl2,Ca-酸盐和Ca3(PO4) 2纳米颗粒的叶子吸收.
- 使用扫描电子显微镜 (SEM) 来评估处理对叶子皮质结构的影响.
- (Sr2+) 被用作一个潜在的Ca2+标记物.
主要成果:
- 化 (CaCl2) 的吸收率最高 (在100小时后90%),其次是Ca-酸盐 (18%) 和Ca3(PO4) 2纳米粒子 (4%).
- 辅助剂显著改变了吸收:将Ca-酸盐的吸收增加到28%,并将CaCl2的吸收降低到77%,而不会影响Ca3(PO4) 2.2.
- CaCl2的吸收速度很快 (辅助剂的半衰期为5小时),而Ca-酸盐和Ca3(PO4) 2的吸收概况较慢,更加线性. Sr2+的吸收反映了Ca2+的吸收.
结论:
- 化 (CaCl2) 是番茄植物最有效的叶状来源.
- 辅助剂调节Ca吸收途径,表明CaCl2通过水友性途径和Ca-酸盐通过脂友性途径被吸收.
- (Sr2+) 可以被用作研究叶状吸收的有效标记物.
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