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A comprehensive study on the main physiological and biochemical changes occurring during growth and on-tree ripening of two apple varieties with different postharvest behaviour

Giné-Bordonaba, Jordi ; Echeverria, Gemma ; Duaigües, Elisabet ; Bobo, Gloria ; Larrigaudière, Christian

Plant physiology and biochemistry, 2019-02, Vol.135, p.601-610 [Periódico revisado por pares]

France: Elsevier Masson SAS

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  • Título:
    A comprehensive study on the main physiological and biochemical changes occurring during growth and on-tree ripening of two apple varieties with different postharvest behaviour
  • Autor: Giné-Bordonaba, Jordi ; Echeverria, Gemma ; Duaigües, Elisabet ; Bobo, Gloria ; Larrigaudière, Christian
  • Assuntos: Antioxidants ; Ethylene ; Malus domestica Borkh ; Oxidative stress and respiration
  • É parte de: Plant physiology and biochemistry, 2019-02, Vol.135, p.601-610
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Apple quality and the storage potential likely depend on a range of physiological and biochemical events occurring throughout fruit development and ripening. In this study, we investigated the major physiological (ethylene production and respiration) and biochemical changes (related to sugar and malic acid content as well as antioxidant metabolism) occurring during growth and on-tree ripening of two apple varieties (‘Granny Smith’ (GS) and ‘Early Red One’ (ERO)) with known differences in their postharvest behaviour, mainly firmness loss and susceptibility to superficial scald. Our results demonstrate that the higher storability and the limited loss of firmness of ‘GS’ fruit was associated to a higher acid content, mainly malic acid, that seemed to be regulated already at fruit set (20 DAFB). The reduced loss of firmness during storage in ‘GS’ was also associated to the fruit inability to produce ethylene upon harvest resulting from very low 1-aminocyclopropane-1-carboxylic acid oxidase (ACO) activity. Sugar accumulation, on the other hand, was similar among both varieties as was also observed for the rate of fruit growth or the fruit respiration pattern. In addition, the higher susceptibility of ‘GS’ if compared to ‘ERO’ to superficial scald was not associated to peroxidative damage (malondialdehyde accumulation) nor to higher levels of the sesquiterpene α-farnesene but rather mediated by a fruit antioxidant imbalance resulting from higher H2O2 levels and lower antioxidant (peroxidase) enzymatic capacity. The interplay between ethylene, respiration and antioxidants or sugars and organic acids during apple growth and development is further discussed. [Display omitted] •Higher apple storability was associated to a higher malic acid content accumulation during growth.•An increased storage potential in apples was also related to the fruit inability to produce ethylene due to reduced ACO.•Superficial scald (SS) is not related to peroxidative damage nor to higher levels of α-farnesene at the time of harvest.•Higher SS incidence may be linked to an antioxidant imbalance resulting from higher H2O2 levels and lower POX activity.
  • Editor: France: Elsevier Masson SAS
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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