The Arabidopsis abscisic acid (ABA) insensitive (ABI)5 transcription factor participates in the ABA‐dependent induction of late embryogenesis abundant (LEA) genes in the final stages of seed development. We tested whether the VP16 transcriptional activation domain is sufficient to provide ABI5 with the ability to activate the AtEm LEA genes in vegetative tissues. We took advantage of a new transgenic seed selection assay based on green fluorescent protein (GFP) fluorescence and found that VP16‐ABI5 triggered growth retardation and ABA‐independent induction of AtEm1 in seedlings. These results indicate that ABI5 activation potential is a limiting step and might be a target for ABA signaling.
Analysis of an activated ABI5 allele using a new selection method for transgenic Arabidopsis seeds
Sandra Bensmihen,A. To,G. Lambert,T. Kroj,J. Giraudat,F. Parcy
Published 2004 in FEBS Letters
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- Publication year
2004
- Venue
FEBS Letters
- Publication date
2004-03-12
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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