Pre-Anthesis Cytokinin Applications Increase Table Grape Berry Firmness by Modulating Cell Wall Polysaccharides
| Autor: | Romina Pedreschi, Felipe Suárez-Vega, Alonso Perez-Donoso, Susana Saez-Aguayo, Reinaldo Campos-Vargas, Bruno G. Defilippi, Claudio Meneses, Joaquín Delgado-Rioseco, Patricio Olmedo, Bárbara Rojas, Baltasar Zepeda |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
food.ingredient
Pectin Pre-anthesis Cytokinin Thompson Seedless Plant Science Berry CPPU Biology Article Cell wall chemistry.chemical_compound cytokinin food pre-anthesis Anthesis Cell wall modification Ecology Evolution Behavior and Systematics Vitis vinifera Ecology Table grape fungi Botany Horticulture & Product Physiology food and beverages PE&RC Xyloglucan Horticulture chemistry QK1-989 cell wall Tuinbouw & Productfysiologie |
| Zdroj: | Plants; Volume 10; Issue 12; Pages: 2642 Plants Plants, Vol 10, Iss 2642, p 2642 (2021) Plants 10 (2021) 12 Plants, 10(12) |
| ISSN: | 2223-7747 |
| DOI: | 10.3390/plants10122642 |
| Popis: | The use of plant growth regulators (PGRs) is widespread in commercial table grape vineyards. 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. |
| Databáze: | OpenAIRE |
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