title: A highly sensitive, quick and simple quantification method for nicotianamine and 2'-deoxymugineic acid from minimum samples using LC/ESI-TOF-MS achieves functional analysis of these components in plants.
abstract: A highly sensitive quantitative method for assaying nicotianamine (NA) and 2'-deoxymugineic acid (DMA) using liquid chromatography/electrospray ionization time-of-flight mass spectrometry (LC/ESI-TOF-MS) was developed. The amino and hydroxyl groups of NA and DMA were derivatized using 9-fluorenylmethoxycarbonyl chloride. The amounts of NA and DMA in 10 mul of xylem sap from rice cultivated under iron (Fe)-sufficient and Fe-deficient conditions were quantified without concentration. In Fe-sufficient plants, the concentrations of NA and DMA were almost equal to that of Fe. In Fe-deficient plants, the concentration of NA did not change significantly, whereas that of DMA increased markedly.
authors.affiliation: Department of Global Agricultural Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Kakei
authors.forename: Isomaro
authors.initials: I
authors.lastname: Yamaguchi
authors.forename: Takanori
authors.initials: T
authors.lastname: Kobayashi
authors.forename: Michiko
authors.initials: M
authors.lastname: Takahashi
authors.forename: Hiromi
authors.initials: H
authors.lastname: Nakanishi
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamakawa
authors.forename: Naoko K
authors.initials: NK
authors.lastname: Nishizawa
mesh_terms: D001383:Azetidinecarboxylic Acid / Q000031:analogs & derivatives* / Q000032:analysis; D002853:Chromatography, Liquid / Q000379:methods*; D007501:Iron / Q000378:metabolism; D012275:Oryza / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D052584:Xylem / Q000737:chemistry
chemical_list: C082893:nicotianamine; D001383:Azetidinecarboxylic Acid; C052864:2'-deoxymugineic acid; D007501:Iron