ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2008
Structures of the three homoeologous loci of wheat benzoxazinone biosynthetic genes TaBx3 and TaBx4 and characterization of their promoter sequences.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Evolutionary divergence and regulatory landscapes of benzoxazinoid metabolism in monocot crops.Plant cell reports · 2026Review
- Phenotypic and genetic resistance to Septoria blotch disease in European wheat varieties.The plant genome · 2026Article
- Genome-Wide Identification and Expression Analysis ofPlants (Basel, Switzerland) · 2024Article
- The Effectiveness of Physical and Chemical Defense Responses of Wild Emmer Wheat Against Aphids Depends on Leaf Position and Genotype.Frontiers in plant science · 2021Article
- On the Trail of the German Purity Law: Distinguishing the Metabolic Signatures of Wheat, Corn and Rice in Beer.Frontiers in chemistry · 2021Article
- Comparative transcriptomic and metabolic analysis of wild and domesticated wheat genotypes reveals differences in chemical and physical defense responses against aphids.BMC plant biology · 2020Article
- Structural characteristics of ScBx genes controlling the biosynthesis of hydroxamic acids in rye (Secale cereale L.).Journal of applied genetics · 2015Article
- Prolonged expression of the BX1 signature enzyme is associated with a recombination hotspot in the benzoxazinoid gene cluster in Zea mays.Journal of experimental botany · 2015Article
- Dispersed benzoxazinone gene cluster: molecular characterization and chromosomal localization of glucosyltransferase and glucosidase genes in wheat and rye.Plant physiology · 2011Article
- Operons.Cellular and molecular life sciences : CMLS · 2009Review
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Abstract
Common wheat (2n=6x=42, genome formula AABBDD) accumulates benzoxazinones (Bxs) as defensive compounds. There are five Bx biosynthetic genes (TaBx1-TaBx5), and their homoeologous alleles are located on all three homoeologous chromosomes of the A, B and D genomes. Here the molecular structures of the TaBx3 and TaBx4 loci, both of which are located on chromosomes 5A, 5B and 5D, were revealed by sequencing transformation-competent artificial chromosome (TAC) clones. In all homoeologous chromosomes, TaBx3 existed downstream of TaBx4 in a tail-to-head manner, and the two genes were separated from each other by 9.0 kb in 5A, 7.3 kb in 5B and 11.3 kb in 5D. Among the three homoeologs of TaBx3 and TaBx4, the promoter sequences were less conserved than the coding sequences. The promoter sequences of TaBx3 and TaBx4 were highly similar to those of their respective orthologs in the diploid progenitors of common wheat, but were not similar to those of the maize orthologs. Sequence similarity was found between the TaBx3 and TaBx4 coding sequences, but not between their promoter sequences despite their similar transcription pattern at the seedling stage. Some putative cis-elements were found to be shared by all TaBx3 and TaBx4 promoter regions. These results imply that stage-specific transcription of TaBx3 and TaBx4 is not controlled by global sequence similarity of their promoters but by some essential cis-elements. The promoter activity measured by transient assays in wheat protoplasts was similar among the three homoeologs of TaBx3 and TaBx4 in spite of their differential transcript levels in wheat seedlings.
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