ArticleJournal of experimental botany2008
The paramutated SULFUREA locus of tomato is involved in auxin biosynthesis.
Article in Journal of experimental botany, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Exogenous indole-3-acetic acid promotes the plant growth and accumulation of selenium in grapevine under selenium stress.BMC plant biology · 2024Article
- miRNA expression profiling and zeatin dynamic changes in a new model system of in vivo indirect regeneration of tomato.PloS one · 2020Article
- SLTAB2 is the paramutated SULFUREA locus in tomato.Journal of experimental botany · 2016Article
- Current Understanding of the Interplay between Phytohormones and Photosynthesis under Environmental Stress.International journal of molecular sciences · 2015Review
- Paramutagenicity of a p1 epiallele in maize.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2013Article
- Paramutation: just a curiosity or fine tuning of gene expression in the next generation?Current genomics · 2011Article
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Authors and funding
5 authors.
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Abstract
The tomato (Solanum lycopersicum) sulfurea mutation displays trans-inactivation of wild-type alleles in heterozygous plants, a phenomenon referred to as paramutation. Homozygous mutant plants and paramutated leaf tissue of heterozygous plants show a pigment-deficient phenotype. The molecular basis of this phenotype and the function of the SULFUREA gene (SULF) are unknown. Here, a comprehensive physiological analysis of the sulfurea mutant is reported which suggests a molecular function for the SULFUREA locus. It is found that the sulf mutant is auxin-deficient and that the pigment-deficient phenotype is likely to represent only a secondary consequence of the auxin deficiency. This is most strongly supported by the isolation of a suppressor mutant which shows an auxin overaccumulation phenotype and contains elevated levels of indole-3-acetic acid (IAA). Several lines of evidence point to a role of the SULF gene in tryptophan-independent auxin biosynthesis, a pathway whose biochemistry and enzymology is still completely unknown. Thus, the sulfurea mutant may provide a promising entry point into elucidating the tryptophan-independent pathway of IAA synthesis.
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