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Transient expression assay demonstrates Aux/IAA proteins repress auxin response element promoters in plant cells, indicating a direct negative regulatory role in auxin-mediated transcription.
Tim Ulmasov, Jane Murfett, Gretchen Hagen, Tom J. Guilfoyle, Aux/IAA Proteins Repress Expression of Reporter Genes Containing Natural and Highly Active Synthetic Auxin Response Elements, The Plant Cell, Vol. 9, No. 11 (Nov., 1997), pp. 1963-1971
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Ulmasov et al. (1997) studied this question.
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