The auxin receptor homologue in Solanum lycopersicum stimulates tomato fruit set and leaf morphogenesis
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TLDR
The present data demonstrate that the tomato SlTIR1 gene plays an important role at the stages of flower-to-fruit transition and leaf formation, including parthenocarpic fruit formation and leaf morphology.Abstract:
TIR1 and its homologues act as auxin receptors and play a crucial role in auxin-mediated plant development. While the functions of auxin receptor genes have been widely studied in Arabidopsis thaliana, there has been no report on the consequences of TIR1 overexpression in plants that regulate fruit development. Here a putative tomato auxin receptor gene, homologous to Arabidopsis AtTIR1, is reported. This gene, designated as Solanum lycopersicum TIR1 (SlTIR1), was found to be expressed in all the parts of floral buds and flowers at anthesis stages. From bud to anthesis, SlTIR1 expression increases slightly in sepal tissue and decreases dramatically in stamen. From anthesis to post-anthesis when fruit set is expected to occur, the expression of SlTIR1 declines in the ovary and sepal. Overexpression of SlTIR1 results in a pleiotropic phenotype including parthenocarpic fruit formation and leaf morphology. Furthermore, SlTIR1 overexpression altered transcript levels of a number of auxin-responsive genes. The present data demonstrate that the tomato SlTIR1 gene plays an important role at the stages of flower-to-fruit transition and leaf formation.read more
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References
More filters
Journal ArticleDOI
Gapped BLAST and PSI-BLAST: a new generation of protein database search programs.
Stephen F. Altschul,Thomas L. Madden,Alejandro A. Schäffer,Jinghui Zhang,Zheng Zhang,Webb Miller,David J. Lipman +6 more
TL;DR: A new criterion for triggering the extension of word hits, combined with a new heuristic for generating gapped alignments, yields a gapped BLAST program that runs at approximately three times the speed of the original.
Journal ArticleDOI
SMART, a simple modular architecture research tool: Identification of signaling domains
TL;DR: SMART as discussed by the authors is a web-based tool that allows rapid identification and annotation of signaling domain sequences, which can be used to determine the modular architectures of single sequences or genomes.
SMART, a simple modular architecture research tool: Identification of signaling domains (computer analysisydiacylglycerol kinasesyDEATH domainydisease genesyautomatic sequence annotation)
TL;DR: SMART as discussed by the authors is a web-based tool that allows rapid identification and annotation of signaling domain sequences, which can be used to determine the modular architectures of single sequences or genomes.
Journal ArticleDOI
Auxin: regulation, action, and interaction.
Andrew Woodward,Bonnie Bartel +1 more
TL;DR: Nearly six decades after the structural elucidation of IAA, many aspects of auxin metabolism, transport and signalling are well established; however, more than a few fundamental questions and innumerable details remain unresolved.
Journal ArticleDOI
The F-box protein TIR1 is an auxin receptor
TL;DR: TIR1 is an auxin receptor that mediates Aux/IAA degradation and auxin-regulated transcription and the loss of TIR1 and three related F-box proteins eliminates saturable auxin binding in plant extracts.