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GROWTH CHAMBER

成长室

Company: Conviron
Catalog#: ATC60
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Rhizosphere Acidification Assay
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2015-12-05
[Abstract]  Plant survival depends on the ability of root systems to establish themselves in locations where water and nutrients are available for uptake and translocation (Hawes et al., 2003). Rhizosphere influences crop productivity by mediating efficient nutrient transformation, acquisition, and use (Shen et al., 2013). Rhizosphere acidification is a central mechanism for plant mineral nutrition since it contributes to nutrient solubility and the proton motive force (pmf). This pmf is generated by the plasma membrane H+-ATPases (Miller and Smith, 1996; Forde, 2000) in root epidermal and cortical cells, and is coupled to active nutrient acquisition (e.g., N, K, P). Roots are able to acidify the rhizosphere by up to two pH units compared to the surrounding bulk ... [摘要]  植物生存取决于根系统在水和营养物可用于摄取和易位的位置建立自己的能力(Hawes等人,2003)。根际土壤通过介导有效的营养物转化,获得和使用来影响作物生产力(Shen等人,2013)。根际酸化是植物矿物营养的中心机制,因为它有助于营养物溶解度和质子动力(pmf)。该pmf由根表皮和皮层细胞中的质膜H sup + -ATPases(Miller和Smith,1996; Forde,2000)产生,并且与活性营养物获得(例如,/em> N,K,P)。与周围的主体土壤相比,根部能够使根际酸化多达两个pH单位,主要通过质子的释放,但是还有碳酸氢盐,有机酸和CO 2。在这里,我们提出了一个简单和便宜的协议,量化由根系统释放到媒体的质子 - 这种方法在我们最近出版的作品中成功地使用(Pizzio等人,2015)。

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