Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/73851
Título: | Molecular reprogramming in grapevine woody tissues at bud burst |
Autor(es): | Noronha, Henrique Luís Silva Garcia, Virginie Silva, Angélica Delrot, Serge Gallusci, Philippe Gerós, H. |
Palavras-chave: | Bud break Cell wall metabolism RNA-seq Woody tissues a-amylase Vitis vinifera |
Data: | Out-2021 |
Editora: | Elsevier 1 |
Revista: | Plant Science |
Citação: | Noronha, Henrique; Garcia, Virginie; Silva, Angélica; Delrot, Serge; Gallusci, Philippe; Gerós, Hernâni, Molecular reprogramming in grapevine woody tissues at bud burst. Plant Science, 311(110984), 2021 |
Resumo(s): | Perennial woody plants undergo a period of dormancy from the beginning of autumn until the end of spring. Whereas the molecular and physiological events that characterize dormancy release of buds have been described in detail, those occurring in woody tissues underneath the buds are mostly unknown. To bridge this gap, the mRNA populations of cane segments located underneath the bud were analyzed at bud dormancy (E-L 1) and at bud burst (E-L 4). They revealed an important reprogramming of gene expression suggesting that cell division, cell wall metabolism and the mobilization of sugars are the main metabolic and cellular events occurring in cane woody tissues at bud burst. Also, the upregulation of several genes of sugar metabolism, encoding starch- and sucrose-degrading enzymes and sugar transporters, correlates with the decrease in starch and soluble sugars in woody tissues concomitant with increased sucrose synthase and -amylolytic biochemical activities. The latter is likely due to the VviAMY2 gene that encodes a functional -amylase as observed after its heterologous expression in yeast. Taken together, these results are consistent with starch and sugar mobilization in canes being primarily involved in grapevine secondary growth initiation and supporting the growth of the emerging bud. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/73851 |
DOI: | 10.1016/j.plantsci.2021.110984 |
ISSN: | 0168-9452 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0168945221001801 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
document_54485_1.pdf Acesso restrito! | 4,27 MB | Adobe PDF | Ver/Abrir |