Plasma membrane-auxin interaction

Stimulatory effects of auxins on the activity of polymerases of lentil roots have been reported (45). Hardin s model (46), in which factors that "modify" RNA polymerases are released as a result of the auxin-plasma membrane interaction, has not been confirmed, but the finding that auxin action involves regulation... 

Each of these early studies revealed the ability of hormones to rearrange the cortical MTs (CMTs), lying in the cell cortex, just beneath the plasma membrane, in ways that seemed relevant to the respective growth response. Despite the paucity of subsequent studies on MT responses to cytokinin, the conclusions from the mid-1970s survive up to the present day. As in the case of the other classes of plant hormones, data are lacking on auxin and cytokinin interactions with the actin MFs. 

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