Pre-anthesis cytokinin applications increase table grape berry firmness by modulating cell wall polysaccharides
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Archivos
Fecha
2021-12
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
MDPI
Nombre de Curso
Licencia CC
Attribution 4.0 International
CC BY 4.0
Deed
Licencia CC
https://creativecommons.org/licenses/by/4.0/
Resumen
The use of plant growth regulators (PGRs) is widespread in commercial table grape vine-yards. The synthetic cytokinin CPPU is a PGR that is extensively used to obtain higher quality grapes. However, the effect of CPPU on berry firmness is not clear. The current study investigated the effects of pre-anthesis applications (BBCH15 and BBCH55 stages) of CPPU on ‘Thompson Seedless’ berry firmness at harvest through a combination of cytological, morphological, and biochemical analyses. Ovaries in CPPU-treated plants presented morphological changes related to cell division and cell wall modification at the anthesis stage (BBCH65). Moreover, immunofluorescence analysis with monoclonal antibodies 2F4 and LM15 against pectin and xyloglucan demonstrated that CPPU treatment resulted in cell wall modifications at anthesis. These early changes have major repercussions regarding the hemicellulose and pectin cell wall composition of mature fruits, and are associated with increased calcium content and a higher berry firmness at harvest. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Notas
Indexación: Scopus.
Palabras clave
Cell wall, CPPU, Cytokinin, Pre-anthesis, Thompson Seedless, Vitis vinifera
Citación
Plants, Volume 10, Issue 12, December 2021, Article number 2642
DOI
10.3390/plants10122642