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. 1972 Nov;69(11):3146–3150. doi: 10.1073/pnas.69.11.3146

Enhancement of RNA Polymerase Activity by a Factor Released by Auxin from Plasma Membrane*

James W Hardin †, Joe H Cherry †, D James Morré ‡, Carole A Lembi ‡
PMCID: PMC389723  PMID: 4508307

Abstract

Using recently developed techniques for solubilization of RNA polymerase from soybean chromatin and isolation of plasma membrane fractions from plants we can show the presence of a transcriptional factor specifically released from the membranes by auxin, 2,4-dichlorophenoxyacetic acid. The nonauxin, 3,5-dichlorophenoxyacetic acid, does not release the factor, but subsequent exposure of the membranes to auxin results in its release. Factor activity could not be demonstrated in fractions devoid of plasma membranes. The presence of a regulatory factor for RNA polymerase associated with plant plasma membrane and specifically released by auxin provides a mechanism whereby both rapid growth responses and delayed nuclear changes could be derived from a common auxin receptor site associated with plasma membrane.

Keywords: soybean, transcription factor, chromatin

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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