Analysis of heaping-induced decline in olive quality: insights from integrated analysis between phenotypic traits and gene expression profiles.

IF 3.5 2区 农林科学 Q1 FORESTRY Tree physiology Pub Date : 2024-07-02 DOI:10.1093/treephys/tpae066
Chenhe Wang, Qizhen Cui, Qingqing Liu, Yutong Fan, Qiaohua Li, Min Zhao, Liangmei Zhao, Jianguo Zhang, Guodong Rao
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Abstract

Heaping is an unavoidable process before olive milling, and its duration significantly affects the olive quality. However, there is limited research on the quality changes of olive fruits on a short-time scale. To gain a better understanding of the molecular mechanisms underlying postharvest deterioration of olives, this study piled olives at room temperature and extracted oil at 0, 8, 24, 48 and 72 h to analyze oil quality parameters. Gas/Liquid Chromatography-Mass Spectrometry (GC/LC-MS) techniques were employed to investigate variations in metabolite contents. Concurrently, the transcriptional profiles of olives during heaping were examined. As piling time progressed, quality indicators declined, and stored fruit were categorized into three groups based on their quality characters: '0 h' belongs to the first category, '8 h' and '24 h' to the second category, and '48 h' and '72 h' to the third category. Metabolite changes were consistent with the expression patterns of genes related to their synthesis pathways. Additionally, ethylene was identified as a crucial factor influencing fruit senescence. These findings establish a foundation for further research on olive deterioration after harvesting and offer insights for optimizing olive oil production.

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分析堆放导致的橄榄品质下降:表型特征与基因表达谱综合分析的启示。
堆叠是橄榄碾磨前不可避免的工序,其持续时间对橄榄果的质量有很大影响。然而,有关橄榄果在短期内质量变化的研究却很有限。为了更好地了解橄榄果采后变质的分子机制,本研究在室温下对橄榄果进行堆积,并在 0 h、8 h、24 h、48 h 和 72 h 提取橄榄油,分析橄榄油的质量参数。采用 GC/LC-MS 技术研究代谢物含量的变化。同时,还研究了堆垛过程中橄榄果的转录特征。随着堆放时间的延长,质量指标下降,储藏果实根据其质量特性分为三类:"0 h "属于第一类,"8 h "和 "24 h "属于第二类,"48 h "和 "72 h "属于第三类。代谢物的变化与其合成途径相关基因的表达模式一致。此外,乙烯被认为是影响果实衰老的关键因素。这些发现为进一步研究橄榄采收后的变质奠定了基础,并为优化橄榄油生产提供了启示。
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来源期刊
Tree physiology
Tree physiology 农林科学-林学
CiteScore
7.10
自引率
7.50%
发文量
133
审稿时长
1 months
期刊介绍: Tree Physiology promotes research in a framework of hierarchically organized systems, measuring insight by the ability to link adjacent layers: thus, investigated tree physiology phenomenon should seek mechanistic explanation in finer-scale phenomena as well as seek significance in larger scale phenomena (Passioura 1979). A phenomenon not linked downscale is merely descriptive; an observation not linked upscale, might be trivial. Physiologists often refer qualitatively to processes at finer or coarser scale than the scale of their observation, and studies formally directed at three, or even two adjacent scales are rare. To emphasize the importance of relating mechanisms to coarser scale function, Tree Physiology will highlight papers doing so particularly well as feature papers.
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