Cell wall metabolism in cold-stored 'Somerset' sweet cherry fruit
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'Somerset' is a dark-red, sweet cherry (Prunus avium L.) cultivar displaying remarkable firmness levels, with concomitantly longer shelf-life potential in comparison to other varieties. It is generally accepted that fruit firmness depends mainly on the composition, structure and interconnections among cell wall polysaccharides. However, the biochemical mechanisms involved in cell wall disassembly vary widely among species, and the understanding of the processes underlying firmness loss in cherry fruit is particularly poor, although a critical role for β-galactosidase (β-Gal) activity has been suggested. In this study, 'Somerset' fruit were hand-collected at commercial maturity, and kept at 0 ºC for 14 or 28 days plus 3 additional days at 20 ºC to simulate commercial shelf life. Firmness, weight loss and juiciness were assessed in each case as indicators of fruit texture. Soluble and insoluble cell wall materials were extracted from lyophilized tissue, and a number of cell wall-modifying enzyme activities were also assessed therein. While β-xylosidase (β-Xyl), α-L-arabinofuranosidase (AFase) and pectin methylesterase (PME) activities were apparently connected to ripening-related firmness changes in this cherry cultivar, data obtained do not support a role for β-Gal in this process.
Is part ofActa Horticulturae (ISHS), 2017, vol. 1161, p. 543-548
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Characterization of cuticle composition after cold storage of "Celeste" and "Somerset" sweet cherry fruit Belge, Burcu; Llovera i Arcas, Montserrat; Comabella, Eva; Gatius Cortiella, Ferran; Guillén, Pere; Graell i Sarle, Jordi; Lara Ayala, Isabel (American Chemical Society, 2014-08-04)Cuticle composition and structure may be relevant factors affecting the storage potential of fruits, but very few studies have analyzed fruit cuticle composition from a postharvest perspective. In this work, the chemical ...
Belge, Burcu; Comabella, Eva; Graell i Sarle, Jordi; Gatius Cortiella, Ferran; Guillén, Pere; Llovera i Arcas, Montserrat; Lara Ayala, Isabel (International Society for Horticultural Science (ISHS), 2017)The cuticular layer plays an important role in protecting fruits against water loss and invasive microorganisms and insects, both during on-tree development and postharvest storage. There is also experimental evidence that ...
Post-storage cell wall metabolism in two sweet cherry (Prunus avium L.) cultivars displaying different postharvest performance Belge, Burcu; Comabella, Eva; Graell i Sarle, Jordi; Lara Ayala, Isabel (SAGE Publications, 2015)The biochemical processes underlying firmness loss of sweet cherry (Prunus avium L.) fruit are poorly understood.Studies on cell wall metabolism of sweet cherry have been generally undertaken during on-tree development or ...