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  Natural Genetic Diversity in Tomato Flavor Genes

Pereira, L., Sapkota, M., Alonge, M., Zheng, Y., Zhang, Y., Razifard, H., et al. (2021). Natural Genetic Diversity in Tomato Flavor Genes. Frontiers in Plant Science, 12: 642828. doi:10.3389/fpls.2021.642828.

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Pereira, Lara1, Author
Sapkota, Manoj1, Author
Alonge, Michael1, Author
Zheng, Yi1, Author
Zhang, YJ2, Author              
Razifard, Hamid1, Author
Taitano, Nathan K.1, Author
Schatz, Michael C.1, Author
Fernie, A. R.2, Author              
Wang, Ying1, Author
Fei, Zhangjun1, Author
Caicedo, Ana L.1, Author
Tieman, Denise M.1, Author
van der Knaap, Esther1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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 Abstract: Fruit flavor is defined as the perception of the food by the olfactory and gustatory systems, and is one of the main determinants of fruit quality. Tomato flavor is largely determined by the balance of sugars, acids and volatile compounds. Several genes controlling the levels of these metabolites in tomato fruit have been cloned, including LIN5, ALMT9, AAT1, CXE1, and LoxC. The aim of this study was to identify any association of these genes with trait variation and to describe the genetic diversity at these loci in the red-fruited tomato clade comprised of the wild ancestor Solanum pimpinellifolium, the semi-domesticated species Solanum lycopersicum cerasiforme and early domesticated Solanum lycopersicum. High genetic diversity was observed at these five loci, including novel haplotypes that could be incorporated into breeding programs to improve fruit quality of modern tomatoes. Using newly available high-quality genome assemblies, we assayed each gene for potential functional causative polymorphisms and resolved a duplication at the LoxC locus found in several wild and semi-domesticated accessions which caused lower accumulation of lipid derived volatiles. In addition, we explored gene expression of the five genes in nine phylogenetically diverse tomato accessions. In general, the expression patterns of these genes increased during fruit ripening but diverged between accessions without clear relationship between expression and metabolite levels.

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Language(s): eng - English
 Dates: 2021
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.3389/fpls.2021.642828
BibTex Citekey: 10.3389/fpls.2021.642828
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Title: Frontiers in Plant Science
  Abbreviation : Front. Plant Sci.
Source Genre: Journal
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Publ. Info: Lausanne : Frontiers Media
Pages: - Volume / Issue: 12 Sequence Number: 642828 Start / End Page: - Identifier: ISSN: 1664-462X
CoNE: https://pure.mpg.de/cone/journals/resource/1664462X