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Company: Cicarelli® Laboratories
Catalog#: 843211
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Determination of Ureides Content in Plant Tissues
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2020-06-05
[Abstract]  The ureides allantoin and allantoate are the main organic nitrogen compounds transported in several legumes, predominantly from N2 fixation. Moreover, recent studies point out a remarkable role for allantoin during several stress responses of plants other than legumes. The goal of this protocol is to determine ureides concentration in different plant tissues. Ureides are extracted from plant material by boiling it in phosphate buffer. The allantoin and allantoate present in the supernatants are subjected to alkaline-acidic hydrolysis to glyoxylate. The glyoxylate is converted into glycoxylic acid phenylhydrazone, that is then oxidized to red-colored 1,5-diphenylformazan. The absorbance of supernatants is measured using a spectrophotometer at 520 nm. Ureides concentration can be ... [摘要]  [摘要 ] 的酰脲尿囊素和尿囊酸是主要的有机氮化合物,在若干豆类,主要选自N 2 fixation.More,最近的研究指出期间比豆类其它植物的几个应激反应为尿囊素一个显着的作用。这样做的目的通过在磷酸盐缓冲液中煮沸从植物材料中提取尿素,然后将多糖中存在的尿囊素和尿囊酸酯进行碱酸水解以生成乙醛酸,将乙醛酸酯转化为协议,以确定不同植物组织中的尿素浓度。 酸苯腙Glycoxylic ,其随后被氧化成红色的1 ,5 -Diphenylformazan。吸光率上清测量用分光光度计在520牛米。酰脲含量可以推断使用乙醛酸校准曲线。酰脲定量不同组织的拟南芥按照该方案进行了拟南芥和大豆植株。

[背景 ] 测定尿素对于表征豆类植物中的N 2 固定和同化以及拟南芥等非尿素植物的胁迫和营养反应非常重要(Brychkova 等人,2008;Watanabe 等人,2014;Irani和Todd, 2016年和2018年)。尿囊素的形成也可用于体内和体外测定尿囊素酶的活性(Duran和Todd,2012年)。需要昂贵设备的技术,例如高效液相色谱(HPLC),通常用于尿素的定量分析,而乙醇提取主要用于从植物组织中回收尿素。本方案基于灵活的光谱分析方法,该方法使用少量廉价试剂,使用磷酸盐缓冲液代替乙醇进行尿素的提取和定量分析大大提高了可重复性。测量,PO ...

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