Review of the studies on the accumulation mechanisms of sugar and organic acids in Eriobotrya japonica fruit
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摘要: 糖酸含量及糖酸比是果实品质的重要指标。糖不仅决定果实甜度,也是色素、氨基酸、维生素和芳香物质等其他营养成分合成的基础原料。果实有机酸与糖一起形成糖酸比,决定果实风味,同时,果实有机酸作为呼吸底物为合成其他物质提供基础。糖酸比是影响果实口感的最主要因子。对糖酸代谢机制的阐明可为果树栽培管理及高品质育种提供理论依据。文章综述了近年来国内外有关枇杷Eriobotrya japonica糖酸代谢的生理学、分子生物学及栽培措施对糖酸积累的影响等方面的研究进展,并结合笔者的研究经验提出未来在枇杷糖酸代谢机制与调控方面的主要研究重点:进一步明确栽培措施和环境因子对果实糖酸代谢的影响及分子机制;探明果实糖、酸运输的分子机制;应用遗传工程调控果实糖酸组成;探明糖积累与酸积累的相互作用机制。参22Abstract: Sugar and acid content and sugar/acid ratio are the important indexes for fruit quality. Sugars not only determine fruit sweetness,but also provide raw materials for synthesis of pigment,amino acids,vitamins and other nutrients and aromatic substances. Fruit acids and sugar form sugar/acid ratio,which decides fruit flavor. Meanwhile,fruit organic acids provide respiratory substrates for the synthesis of other essential substances. Sugar/acid ratio is one of the most important determiner for fruit quality. Sugar and organic acid metabolism processes are extremely complicated,the two pathways are closely connected. Understanding towards sugar and acid accumulation mechanism would provide important theoretical basis for cultivation and breeding. This article reviews the recent research advances on loquat (Eriobotrya japonica) sugar acid metabolism,physiology,molecular biology,and cultivation,etc,which will be helpful for related areas. Combining the authors research experience,the possible researching focuses on future loquat sugar and acid metabolic and regulation mechanism are proposed:further clarify the molecular mechanism of cultivation measures and environment factors on the fruit sugar and acid metabolism;ascertain the fruit sugar and acid transporting mechanisms; regulate fruit sugar and acid composition by genetic engineering technology; clarify the interaction mechanism of sugar accumulation and acid accumulation.[Ch,22 ref.]
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Key words:
- horticulture /
- Eriobotrya japonica /
- fruit /
- sugar /
- organic acid /
- metabolic mechanism /
- review
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2012.03.021
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