Fe Uptake from Meso and d,l-Racemic Fe(o,o-EDDHA) Isomers by Strategy I and II Plants

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• 作者：Mar Cerd&aacute ; n ; Sara Alcañ ; iz ; Margarita Ju&aacute ; rez ; Juana D. Jord&aacute ; and Dolores Bermú ; dez
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2006
• 出版时间：February 22, 2006
• 年：2006
• 卷：54
• 期：4
• 页码：1387 - 1391
• 全文大小：67K
• 年卷期：v.54,no.4(February 22, 2006)
• ISSN：1520-5118

文摘

One of the most efficient fertilizers to correct Fe deficiency in calcareous soils and waters withhigh bicarbonate content is based on ferric ethylenediamine-N,N'-bis(o-hydroxyphenylacetic) acid[Fe(o,o-EDDHA)]. Fe(o,o-EDDHA) forms two groups of geometric isomers known as meso and d,l-racemic. To determine the Fe uptake from meso and d,l-racemic Fe(o,o-EDDHA), four iron-efficientplants, two plants representative of strategy I (tomato and pepper) and two plants representative ofstrategy II (wheat and oats), were grown in hydroponic culture. Results indicated that strategy IIplants took up iron from both Fe(o,o-EDDHA) isomers equally. However, strategy I plants took mainlythe iron associated with the meso form (the lowest stability isomer).Keywords: Fe(o,o-EDDHA) isomers; strategy I plants; strategy II plants; iron uptake; Lycopersiconesculentum Mill.; Capsicum annuum L.; Triticum aestivum; Avena sativa L.