Changes in auxin response from mutations in an AUX/IAA gene.
basic_science · Level V
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Abstract
Transcription of the AUX/IAA family of genes is rapidly induced by the plant hormone auxin, but evidence that AUX/IAA genes mediate further responses to auxin has been elusive. Changes in diverse auxin responses result from mutations in the Arabidopsis AXR3 gene. AXR3 was shown to be a member of the AUX/IAA family, providing direct evidence that AUX/IAA genes are central in auxin signaling. Molecular characterization of axr3 gain-of-function and loss-of-function mutations established the functional importance of domains conserved among AUX/IAA proteins.
Medical subject headings
- Arabidopsis
- Arabidopsis Proteins
- Genes, Plant
- Indoleacetic Acids
- Nuclear Proteins
- Plant Proteins