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Fruit quality and differentially expressed genes of winter-harvested pineapple in response to elevated temperature over a short postharvest period

文献类型： 外文期刊

作者： Liu, Chuan-He 1 ; Liu, Yan 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou 510640, Guangdong, Peoples R China

2.Minist Agr, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangzhou 510640, Guangdong, Peoples R China

关键词： Pineapple [Ananas comosus (L.) Men.];Elevated postharvest temperature (EPT);Fruit quality;Differentially expressed genes (DEGs)

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The aim of this work was to investigate the influences of elevated postharvest temperature (EPT) for 1 d and 2 d on the physicochemical quality of pineapple fruit and the differentially expressed genes (DEGs) underlying this process by RNA-seq. The results suggested that EPT increased the L*, a*, b* of pineapple fruit skin. EPT decreased the L* and increased the a* and b* of pineapple pulp. EPT increased the total soluble solid (TSS), sucrose content and TSS/titratable acidity (TA) ratio and decreased the TA. EPT decreased the firmness of pineapple fruit. At 1 d, EPT improved the production of aromatic alkenes. At 2 d, EPT improved the production of aromatic esters and decreased the alkenes. A differential gene expression analysis suggested that a total of 6725 and 5845 DEGs were identified by comparing EPT and control at 1 d and 2 d, respectively. A number of DEGs were screened for their involvement in the EPT process effects on pineapple fruit, including those associated with coloration, sugar/acid metabolism, texture softening and aroma biosynthesis. A subset of these DEGs was validated by qPCR, which was consistent with the corresponding Reads Per Kilo bases per Million reads (RPKM values) from RNA-seq. The findings of this study contribute to our understanding of how EPT regulates the quality of pineapple fruit over different durations and the molecular mechanisms underlying this process.

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