ArticleJournal of experimental botany2011
Misregulation of the LOB domain gene DDA1 suggests possible functions in auxin signalling and photomorphogenesis.
Article in Journal of experimental botany, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
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34 citing papers in PubMed.
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- Phylogeny and Functions of LOB Domain Proteins in Plants.International journal of molecular sciences · 2020Review
- Genome-Wide Analysis of the Lateral Organ Boundaries Domain Gene Family in Brassica Napus.Genes · 2020Article
- Genome-wide identification and characterization of the lateral organ boundaries domain gene family inPlant diversity · 2020Article
- Structural analysis reveals a "molecular calipers" mechanism for a LATERAL ORGAN BOUNDARIES DOMAIN transcription factor protein from wheat.The Journal of biological chemistry · 2019Article
- Development of Parasitic Organs of a Stem Holoparasitic Plant in GenusFrontiers in plant science · 2019Review
- Transcriptomic and Metabolomic Reprogramming from Roots to Haustoria in the Parasitic Plant, Thesium chinense.Plant & cell physiology · 2018Article
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5 authors.
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Abstract
The LATERAL ORGAN BOUNDARIES DOMAIN (LBD) gene family encodes plant-specific transcription factors. In this report, the LBD gene DOWN IN DARK AND AUXIN1 (DDA1), which is closely related to LATERAL ORGAN BOUNDARIES (LOB) and ASYMMETRIC LEAVES2 (AS2), was characterized. DDA1 is expressed primarily in vascular tissues and its transcript levels were reduced by exposure to exogenous indole-3-acetic acid (IAA or auxin) and in response to dark exposure. Analysis of a T-DNA insertion line, dda1-1, in which the insertion resulted in misregulation of DDA1 transcripts in the presence of IAA and in the dark revealed possible functions in auxin response and photomorphogenesis. dda1-1 plants exhibited reduced sensitivity to auxin, produced fewer lateral roots, and displayed aberrant hypocotyl elongation in the dark. Phenotypes resulting from fusion of a transcriptional repression domain to DDA1 suggest that DDA1 may act as both a transcriptional activator and a transcriptional repressor depending on the context. These results indicate that DDA1 may function in both the auxin signalling and photomorphogenesis pathways.
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