Effect of Fe-Catalyzed Photooxidation of EDTA on Root Growth in Plant Culture Media | Zendy

Roger P. Hangarter | Zendy; Triant C. Stasinopoulos | Zendy

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Effect of Fe-Catalyzed Photooxidation of EDTA on Root Growth in Plant Culture Media

Author(s) -

Roger P. Hangarter,

Triant C. Stasinopoulos

Publication year - 1991

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.96.3.843

Subject(s) - formaldehyde , chemistry , ferric , plant growth , photochemistry , catalysis , fluorescence , nutrient , ferric iron , plant cell , nuclear chemistry , inorganic chemistry , biochemistry , horticulture , organic chemistry , biology , physics , quantum mechanics , gene , ferrous

Light from fluorescent lamps can induce formaldehyde production and iron deficiency in plant nutrient culture medium. Formaldehyde is produced from EDTA when it is oxidized by the photochemical reduction of ferric iron and it can accumulate to inhibitory levels. The medium becomes iron deficient because iron becomes unchelated and forms an unavailable precipitate as EDTA is oxidized. The combination of light-induced formaldehyde production and loss of available iron reduces the ability of the culture media to support growth of Arabidopsis thaliana roots. Removing ultraviolet and blue wavelengths with a yellow acrylic filter is a simple and effective means of preventing Fecatalyzed photooxidation of EDTA in plant culture media.

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