Issue |
Ciência Téc. Vitiv.
Volume 37, Number 1, 2022
|
|
---|---|---|
Page(s) | 71 - 78 | |
DOI | https://doi.org/10.1051/ctv/ctv2022370171 | |
Published online | 02 June 2022 |
Article
Gret1 retrotransposon and VvmybA1 gene sequences in somatic mutants of new table grape varieties ‘Brasil’ and –Black Star’ (Vitis vinifera L.).
Retrotransposon Gret1 e sequências do gene Vvmyba1 em mutantes somáticos de novas variedades de uvas de mesa ‘Brasil’ e ‘Black Star’ (Vitis Vinifera L.)
1
Postgraduate Program in Genetics and Breeding, State University of Maringá, 87020-900 Maringá, PR. Brazil
2
Department of Biotechnology, Genetics and Cell Biology, State University of Maringá, 87020-900 Maringá, PR. Brazil
* Corresponding author: Tel.: +55 44 3011 4681; e-mail: mfpsmachado@uem.br
Received:
23
December
2021
Accepted:
4
May
2022
Somatic mutations in grapes are relatively frequent and associated with diversity in grape skin color and berry morphology. Mutations that occur on a side branch of the ‘Benitaka’ cultivar with rosy-red berry skin color generated the ‘Brasil’ cultivar, and mutations that occurred on a side branch of ‘Brasil’ generated the ‘Black Star’ cultivar, both showing a black color in the berry skin. Therefore, genetic characterization of the Gret1 retrotransposon and the VvmybA1 gene in ‘Italia’, ‘Rubi’, ‘Benitaka’, ‘Brasil’, and ‘Black Star’ was started to find whether the altered coloration of berries in ‘Brasil’ and ‘Black Star’ is a product of different mutation patterns in the investigated sequences. Six primer combinations were used for the amplification of different sequences of the Gret1 retrotransposon and VvmybA1 gene of the five cultivars. Polymerase chain reaction (PCR) of the Gret1 retrotransposon and the VvmybA1 gene and sequencing of the amplified products using six primer combinations showed no different alleles or different nucleotide sequences in ‘Brasil’ and ‘Black Star’. The sequencing of the VvmybA1 gene in the present study showed that the mutations that occurred in the cultivar ‘Italia’ for generating the ‘Benitaka’ cultivar persisted in the ‘Brasil’ and ‘Black Star’ cultivars.
Resumo
As mutações somáticas em uvas são eventos relativamente frequentes e estão associados à diversidade de cor da película e da morfologia dos bagos. Mutações que ocorreram em ramos da cultivar ‘Benitaka’ com a cor da película dos bagos rosa-avermelhada originaram a cultivar ‘Brasil’, e mutações que ocorreram em ramos da cultivar ‘Brasil’ originaram a cultivar ‘Black Star’, ambas com bagos de coloração azul negra. Portanto, uma caracterização genética do retrotransposon Gret1 e do gene VvmybA1 em ‘Italia’, ‘Rubi’, ‘Benitaka’, ‘Brasil’ e ‘Black Star’ foi iniciada para verificar se a coloração alterada dos bagos nas cultivares ‘Brasil’ e ‘Black Star’ é produto de diferentes padrões de mutação nas sequências investigadas. Seis combinações de primers foram utilizadas para amplificar diferentes sequências do retrotransposon Gret1 e do gene VvmybA1 das cinco cultivares. A amplificação por reação em cadeia da polimerase (PCR) do retrotransposon Gret1 e do gene VvmybA1, assim como a sequenciação dos produtos amplificados pelas seis combinações de primers não mostrou alelos diferentes ou sequências nucleotídicas diferentes em ‘Brasil’ e ‘Black Star’. A sequenciação do gene VvmybA1 neste estudo mostrou que as mutações que ocorreram na cultivar ‘Italia’ e que originaram a cultivar ‘Benitaka’ persistiram nas cultivares ‘Brasil’ e ‘Black Star’.
Key words: grapes / clonal propagation / somatic mutations / ‘Brasil’ cultivar / ‘Black Star’ cultivar
Palavras-chave: uvas / propagação clonal / mutações somáticas / cultivar ‘Brasil’ / cultivar ‘Black Star’
© Strioto et al., 2022
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