Relationship of apple vitamin C and antioxidant contents to harvest date and postharvest pathogen infection
Relationship of apple vitamin C and antioxidant contents to harvest date and postharvest pathogen infection
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DOI：
10.1002/jsfa.2777
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发表时间：
2007-04-15
影响因子：
4.1
通讯作者：
Keulemans, Johan
中科院分区：
文献类型：
--
作者：
Davey, Mark W.;Auwerkerken, Annemarie;Keulemans, Johan
最近有报道称，比利时栽培的海参果实的商业收获日期与平均维生素C （l -抗坏血酸，L-AA）含量之间存在惊人的强相关性（Davey MW和Keulemans J， J农业食品化学52:8031-8038(2004)）。研究进一步表明，这种相关性在不同的生产年份保持一致，收获日期也与果实的L-AA和总抗氧化活性显著相关，但与谷胱甘肽（GSH）水平或果实的其他生理参数无关。L-AA浓度也与采前平均白天温度呈负相关；然而，由于采收前温度和采收日期本身是密切相关的，因此不可能明确区分遗传因素和环境因素对这些性状的相对贡献。不同苹果基因型果实对灰葡萄孢菌的敏感性随采收期的增加而降低，且与果实维生素C含量有关，与谷胱甘肽水平无关。果实对果实Gloeosporium fructigenum采后感染的易感性没有这种关系。这些结果在低投入育种的背景下进行了讨论，通过选择具有增强抗氧化防御能力的果实来提高果实品质和抗病性。(c) 2007年化学工业学会。
A surprisingly strong correlation between the date of commercial harvest and the mean vitamin C (L-ascorbate, L-AA) contents of fruits from Belgian-grown Malus x domestica cultivars was reported recently (Davey MW and Keulemans J, J Agric Food Chem 52:8031-8038 (2004)). The study has been extended to show that this correlation remains consistent over different production years and that harvest date is also significantly correlated with fruit L-AA and total antioxidant activities but not with glutathione (GSH) levels or other physiological parameters of fruits. L-AA concentrations were also found to be negatively correlated with mean preharvest daytime temperature; however, since preharvest temperature and harvest date themselves are closely linked, it was not possible to definitively separate the relative contributions of genetic and environmental factors to these traits. It is also shown that the susceptibility of fruits of different apple genotypes to postharvest infection with Botrytris cinerea decreases with increasing harvest date and that this susceptibility is correlated with fruit vitamin C but not GSH levels. There is no such relationship underlying the susceptibility of fruits to postharvest infection with Gloeosporium fructigenum. These results are discussed in the context of low-input breeding for improved fruit quality and disease resistance via selection of fruits with improved antioxidant defence capabilities. (c) 2007 Society of Chemical Industry.