Two tobacco genes induced by infection, elicitor and salicylic acid encode glucosyltransferases acting on phenylpropanoids and benzoic acid derivatives, including salicylic acid

FEBS Letters

Chong, Julie¹  Kauffmann, Serge¹  Baltz, Rachel¹  Saindrenan, Patrick¹  Fritig, Bernard¹  Fraissinet-Tachet, Laurence¹ 

[1] Institut de Biologie Moléculaire des Plantes du CNRS, Université Louis Pasteur, 67084 Strasbourg, France

关键词: Glucosyltransferase;    Phenylpropanoid;    Salicylic acid;    Hypersensitive response;    Nicotiana tabacum;    TOGT;    tobacco glucosyltransferase;    HR;    hypersensitive response;    SA;    salicylic acid;    TMV;    tobacco mosaic virus;   

DOI  :  10.1016/S0014-5793(98)01257-5

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Two tobacco genes (TOGT) with homology to glucosyltransferase genes known to be induced by salicylic acid (SA) also responded rapidly to a fungal elicitor or to an avirulent pathogen. SA, although an efficient inducer, was shown not to be essential in the signal transduction pathway regulating TOGT gene expression during the resistance response. Recombinant TOGT proteins produced in Escherichia coli exhibited low, but significant, glucosyltransferase activity towards SA, but very high activity towards hydroxycoumarins and hydroxycinnamic acids, with glucose esters being the predominant products. These results point to a possible important function in defense of these glucosyltransferases in conjugating aromatic metabolites prior to their transport and cross-linking to the cell wall.

【 授权许可】

Unknown