Mechanisms of auxin‐induced plant cell elongation

FEBS Letters

Brummer, Benno¹  Parish, Roger W.¹ 

[1] Cytology, Plant Biology Institute, University of Zürich, Zollikerstrasse 107, CH-8008 Zürich, Switzerland

关键词: Plant growth regulator;    Cell wall acidification;    Cytoplasmic Ca2+;    Cytoplasmic pH;    Membrane potential;    Transmembrane ion gradient;   

DOI  :  10.1016/0014-5793(83)80720-0

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

An alternative to the wall acidification theory of auxin-induced elongation growth is presented. A central effect of auxin is postulated to be cytoplasmic acidification, possibly via an increase in the levels of cytoplasmic Ca²⁺. Activation of the outwardly directed electrogenic proton pump resulting from acidification would lead to changes in Δψ and transmembrane ion gradients. We argue that these changes, rather than wall acidification, are involved in elongation growth.

【 授权许可】

Unknown