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Updated: Jun 20, 2026
08:09
Annotation of Plant Gene Function via Combined Genomics, Metabolomics and Informatics
Published on: June 17, 2012
Anthocyanin biosynthesis genes location and expression in wheat-rye hybrids
Elena K Khlestkina1, Olesya Yu Tereshchenko, Elena A Salina
1Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Lavrentjeva Ave. 10, Novosibirsk, 630090, Russia. khlest@bionet.nsc.ru
Molecular Genetics and Genomics : MGG
|September 4, 2009
Summary
Gene expression networks in wheat and rye were studied using anthocyanin biosynthesis pathway (ABP) genes. While coordinated, some divergence in wheat and rye ABP genes affects gene expression levels.
Area of Science:
- Plant genetics and molecular biology
- Comparative genomics
- Crop improvement
Background:
- Understanding interspecies gene expression is crucial for wide hybridization in cultivated plants.
- Anthocyanin biosynthesis pathway (ABP) genes serve as a model for studying gene conservation across species.
- Wheat and rye share complex evolutionary histories and genetic interactions.
Purpose of the Study:
- To investigate the conservation and expression of wheat and rye anthocyanin biosynthesis pathway (ABP) genes.
- To analyze the regulatory interactions between wheat and rye genes, particularly the Rc gene and F3h.
- To assess the functional conservation and divergence of ABP gene networks in wheat-rye hybrids.
Main Methods:
- Isolation and analysis of key ABP genes (CHI, F3H, ANS, 3RT) in wheat and rye.
- Determination of rye ABP gene locations on chromosomes.
- Study of ABP gene expression in wheat-rye chromosome addition and substitution lines.
Main Results:
- Rye ABP gene locations align with known chromosomal rearrangements between wheat and rye.
- The Rc gene plays a critical role in activating F3h for red coleoptile formation.
- Cross-species activation of F3h by the Rc gene was observed, but rye F3h showed lower expression in a wheat background.
- Divergence in expression levels between wheat and rye ABP genes was detected.
Conclusions:
- Wheat and rye ABP gene systems are finely coordinated in hybrids, but exhibit divergence affecting expression levels.
- The Rc-F3h regulatory interaction is conserved but shows quantitative differences between species.
- These findings provide insights into gene network conservation and divergence for plant breeding applications.
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