Molecular genetics of berry colour variation in table grape

  1. Lijavetzky, D. 1
  2. Ruiz-García, L. 3
  3. Cabezas, J.A. 1
  4. De Andrés, M.T. 2
  5. Bravo, G. 1
  6. Ibáñez, A. 1
  7. Carreño, J. 3
  8. Cabello, F. 2
  9. Ibáñez, J. 2
  10. Martínez-Zapater, J.M. 1
  1. 1 Centro Nacional de Biotecnología
    info

    Centro Nacional de Biotecnología

    Madrid, España

    ROR https://ror.org/015w4v032

  2. 2 Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario
    info

    Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario

    Madrid, España

  3. 3 Instituto Murciano de Investigacion y Desarrollo Agrario y Alimentario
    info

    Instituto Murciano de Investigacion y Desarrollo Agrario y Alimentario

    La Alberca de Záncara, España

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Revista:
Molecular Genetics and Genomics

ISSN: 1617-4615

Any de publicació: 2006

Volum: 276

Número: 5

Pàgines: 427-435

Tipus: Article

DOI: 10.1007/S00438-006-0149-1 PMID: 16924546 SCOPUS: 2-s2.0-33748974422 GOOGLE SCHOLAR

Altres publicacions en: Molecular Genetics and Genomics

Objectius de Desenvolupament Sostenible

Resum

The genetics and biochemistry of anthocyanins and flavonol biosynthesis and their role in plant organ pigmentation is well established in model species. However, the genetic basis of colour variation is species specific and understanding this variation is very relevant in many fruit and flower crop species. Among grape cultivars, there is a wide genetic variation for berry colour ranging from yellow-green ("white" cultivars) to dark blue berries. Berry colour results from the synthesis and accumulation of anthocyanins in the berry skin, which in plants is commonly regulated by transcription factors belonging to the MYB and bHLH families. In this work, we aimed to identify the major genetic determinants of berry colour variation in a large collection of table grape cultivars and somatic variants. The genetic analyses of berry colour in a few grape segregating progenies had previously identified a single locus on linkage group 2 responsible for colour variation. Furthermore, somatic variation for berry skin colour in cultivar Italia had been associated with the presence of a Gret1 retrotransposon in the promoter region of VvmybA1, a Myb gene whose expression is associated to skin colouration. The results show that VvmybA1 is the gene underlying the mapped locus controlling berry colour in grape. Additionally, the molecular analyses indicate that genetic and somatic berry colour variation can be associated to molecular variation at VvmybA1 in more than 95% of the analyzed cultivars. Thus, VvmybA1 is a major determinant of berry colour variation in table grape and its instability is the major cause of somatic variation for this trait. © Springer-Verlag 2006.