Chemical Studies in the Physiology of Apples XI. The Relation between the Mineral Constitution of Apples and the Soil on which they are Grown

Brown, Janet W.

doi:10.1093/oxfordjournals.aob.a090202

Cited by 4 publications

(1 citation statement)

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“…Foliar spraying of exogenous Ca2+ solution during the growing period could effectively reduce the incidence of cork spot disorder [3,[21][22][23]. In addition, boron (B), magnesium (Mg), potassium (K), and nitrogen (N) contents and the ratio of them to Ca have also been reported to be associated with the incidence of cork spot disorder [6,8,15,17,20,[24][25][26][27]. It was suggested that the interaction of Ca with other mineral elements may also affect the absorption of Ca by fruit [28,29].…”

Section: Introductionmentioning

confidence: 99%

Mineral and Metabolome Analyses Provide Insights into the Cork Spot Disorder on ‘Akizuki’ Pear Fruit

Yang

Zhu

et al. 2023

Horticulturae

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Cork spot is a common physiological disorder in pear fruits, which has been found in some pear cultivars. Mineral nutrition imbalance in fruit is regarded as the principal influence factor for disorder incidence, with some ongoing confusion and controversy. In our research, we explored the cork spot characteristics in Japanese pear ‘Akizuki’ (Pyrus pyrifolia Nakai), adopted metabolome and mineral content analysis for healthy and disordered fruits, and made a correlation analysis of mineral and metabolites. Cork spots are mainly distributed on the outer flesh beneath the fruit peel. In cork spotted tissues, superoxide (SOD) and peroxidase (POD) activities, as well as malondialdehyde (MDA) content, increased. A total of 1024 known metabolites were identified from all the samples and more changes in metabolism were detected between normal and cork spotted flesh tissues. Correlation analysis displayed that Ca, especially the Mg/Ca in fruits, could be used to predict whether an orchard will develop cork spot disorder; Mg and B were associated with the appearance of symptoms, and the contents of Zn, Fe, and Mg, as well as Mg/B and Zn/B, might be strongly tied to the formation of cork spots in pears. This research provides insights into the occurrence of pear cork spot disorder and clarifies the role of minerals.

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