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Amberlite® IR-120(H), ion exchange resin

Company: Alfa Aesar
Catalog#: L14285
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Rice Root Organic Acid Efflux Measurement by Using Ion Chromatography
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2017-02-20
[Abstract]  Organic acids secreted from plant roots play important roles in various biological processes including nutrient acquisition, metal detoxification, and pathogen attraction. The secretion of organic acids may be affected by various conditions such as plant growth stage, nutrient deficiency, and abiotic stress. For example, when white lupin (Lupinus albus L.) is exposed to phosphorus (P)-deficient conditions, the secretion of citrate acid from its proteoid roots significantly increases (Neumann et al., 1999). This protocol describes a method for the collection and measurement of the efflux of organic acids (oxalate, malate, and citrate) from the roots of rice cultivar Nipponbare (‘Nip’) under different nitrogen forms (NH4+ and NO3-), ... [摘要]  从植物根系分泌的有机酸在各种生物过程中起重要作用,包括营养获取,金属解毒和病原体吸引。有机酸的分泌可能受植物生长阶段,营养缺乏和非生物胁迫等各种条件的影响。例如,当白羽扇豆(Lupinus albus)暴露于磷(P)缺乏条件时,柠檬酸从其类软骨根分泌显着增加(Neumann等, ,1999)。该方案描述了从不同氮形式的水稻品种Nipponbare('Nip')的根中收集和测量有机酸(草酸盐,苹果酸盐和柠檬酸盐)的流出的方法(NH 4) + 和NO 3 - )以及不同的P电源(+ P和-P)条件。

背景 除了酶法(Delhaize等人,1993)和高效液相色谱(HPLC)(Chen等人,2013),离子色谱是另一个广泛的用于测定有机酸的方法,其先前已被用于检测在Al 3 + 应力期间芋头根系分泌物中草酸盐含量的显着增加(Ma和Miyasaka,1998)。与离子色谱相比,替代方法有其自身的缺陷。例如,酶法需要使用容易经历变性的酶。此外,通过HPLC区分草酸和Cl-峰是困难的。在这里,我们描述了使用离子色谱法分析水稻根系分泌的有机酸的方法。该方法可用于分析其他水培栽培植物分泌的有机酸。

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