The Contribution of Arabidopsis Homologs of <small>L</small>-Gulono-1,4-lactone Oxidase to the Biosynthesis of Ascorbic Acid

Takanori MARUTA; Yaka ICHIKAWA; Takahiro MIEDA; Toru TAKEDA; Masahiro TAMOI; Yukinori YABUTA; Takahiro ISHIKAWA; Shigeru SHIGEOKA

doi:10.1271/bbb.100157

This article has now been updated. Please use the final version.

The Contribution of Arabidopsis Homologs of L-Gulono-1,4-lactone Oxidase to the Biosynthesis of Ascorbic Acid

Takanori MARUTA, Yaka ICHIKAWA, Takahiro MIEDA, Toru TAKEDA, Masahiro TAMOI, Yukinori YABUTA, Takahiro ISHIKAWA, Shigeru SHIGEOKA

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Keywords: L-ascorbic acid, biosynthetic pathway, L-gulono-1,4-lactone oxidase, Arabidopsis plants

JOURNAL FREE ACCESS Advance online publication

Article ID: 100157

DOI https://doi.org/10.1271/bbb.100157

The final version of this article is now available: Vol. 74 (2010) , No. 7 p.1494

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Abstract

To clarify the involvement of seven Arabidopsis homologs of rat L-gulono-1,4-lactone (L-GulL) oxidase, AtGulLOs, in the biosynthesis of L-ascorbic acid (AsA), transgenic tobacco cells overexpressing the various AtGulLOs were generated. Under treatment with L-GulL, the levels of total AsA in three transgenic tobacco cell lines, overexpressing AtGulLO2, 3, or 5, were significantly increased as compared with those in control cells.

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