Fe uptake from meso and D,L-racemic Fe(o,o-EDDHA) isomers by strategy I and II plants.
One of the most efficient fertilizers to correct Fe deficiency in calcareous soils and waters with high 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-efficient plants, two plants representative of strategy I (tomato and pepper) and two plants representative of strategy II (wheat and oats), were grown in hydroponic culture. Results indicated that strategy II plants took up iron from both Fe(o,o-EDDHA) isomers equally. However, strategy I plants took mainly the iron associated with the meso form (the lowest stability isomer).
Cerdán
Mar
M
Agrochemistry and Biochemistry Department, Faculty of Sciences, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain. mar.cerdan@ua.es
Alcañiz
Sara
S
Juárez
Margarita
M
Jordá
Juana D
JD
Bermúdez
Dolores
D
D018554:Avena / Q000378:metabolism; D002212:Capsicum / Q000378:metabolism; D005029:Ethylenediamines / Q000737:chemistry / Q000378:metabolism*; D005290:Ferric Compounds / Q000737:chemistry / Q000378:metabolism*; D005308:Fertilizers / Q000032:analysis; D007502:Iron Chelating Agents / Q000737:chemistry / Q000378:metabolism*; D018551:Solanum lycopersicum / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D012987:Soil / Q000032:analysis; D013237:Stereoisomerism; D014908:Triticum / Q000378:metabolism
D005029:Ethylenediamines; D005290:Ferric Compounds; D005308:Fertilizers; D007502:Iron Chelating Agents; D012987:Soil; C011813:ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid)