Indoleacetic acid pretreatment of tobacco plants in vivo increases the in vitro sensitivity to auxin of the plasma membrane H + -ATPase from leaves and modifies the polypeptide composition of the membrane - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Article Dans Une Revue FEBS Letters Année : 1993

Indoleacetic acid pretreatment of tobacco plants in vivo increases the in vitro sensitivity to auxin of the plasma membrane H + -ATPase from leaves and modifies the polypeptide composition of the membrane

Résumé

The sensitivity to auxin of the H+-ATPase-mediated proton translocation was investigated in vitro using purified plasma membrane vesicles from tobacco leaves. In vivo pretreatment of tobacco plants with auxin promotes a 100-fold increase of the in vitro sensitivity to auxin. This effect is specific for biologically active auxins and is dose- and time-dependent. In addition, pretreatment with auxin induces the accumulation of several polypeptides in the plasma membrane. These polypeptides constitute the first set of hormone-responsive polypeptides evidenced in plant membranes.

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Biologie végétale Sciences du Vivant [q-bio]

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https://hal.inrae.fr/hal-04170109

Soumis le : mardi 25 juillet 2023-10:13:45

Dernière modification le : mercredi 31 janvier 2024-16:54:03

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hal-04170109 , version 1 (25-07-2023)

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Véronique Santoni, Gérard Vansuyt, Michel Rossignol. Indoleacetic acid pretreatment of tobacco plants in vivo increases the in vitro sensitivity to auxin of the plasma membrane H + -ATPase from leaves and modifies the polypeptide composition of the membrane. FEBS Letters, 1993, 326 (1-3), pp.17-20. ⟨10.1016/0014-5793(93)81751-K⟩. ⟨hal-04170109⟩

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