黄瓜(Cucumis sativus)果实在冷藏过程中受到黄瓜绿斑驳花叶病毒感染而变质

IF 6.8 1区 农林科学 Q1 AGRONOMY
Amit Raz Magid , Noa Sela , Ginat Raphael , Diana Leibman , Aviv Dombrovsky , Carmit Ziv
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引用次数: 0

摘要

黄瓜(Cucumis sativus L.)是一种被广泛种植的重要作物,对黄瓜绿色斑驳花叶病毒(CGMMV)易感。众所周知,CGMMV会降低黄瓜产量,但对其采后水果质量的影响知之甚少。为了研究CGMMV侵染对黄瓜果实采后品质和贮藏性的影响,在黄瓜苗期侵染、植物营养生长期侵染(与格架同时施用)和坐果期侵染3个不同发育阶段接种CGMMV。早期感染(苗期和棚架)导致产量显著下降,果实质量(形状、颜色和重量)受损。相反,在坐果期感染产生的可销售果实与收获时未感染的对照果实没有明显差异。然而,CGMMV侵染对冷藏后果实品质有显著影响。病毒感染的果实更易受到冷害,表现为果皮叶绿素降解、离子泄漏增加、丙二醛水平升高和自发光值升高。此外,cgmmv感染的果实更容易感染灰霉菌病。收获时受感染果实的转录组学分析显示,与苯丙素和乙烯代谢相关的基因、ERF和WRKY转录因子上调,表明多种途径介导了cgmmv感染果实对采后侵害的差异生理反应。这些结果表明,水果的病毒感染是一个额外的,以前未被重视的因素,影响新鲜农产品的质量和采后损失。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cucumber (Cucumis sativus) fruit deterioration in cold storage is aggravated by cucumber green mottle mosaic virus infection
Cucumber (Cucumis sativus L.), a widely cultivated and important crop, is susceptible to the Tobamovirus cucumber green mottle mosaic virus (CGMMV). CGMMV is known to reduce cucumber yield, yet little is known about its impact on the postharvest quality of the fruit. To examine the effect of CGMMV infection on the quality and storability of cucumber fruit after harvest, cucumber plants were inoculated with CGMMV at three different developmental stages: seedling infection, infection during the vegetative growth of the plants (along with trellis application), and infection during fruit set. Early-stage infections (seedling and trellising) led to significant reductions in yield and impaired fruit quality (shape, color, and weight). Conversely, infections during the fruit set stage produced marketable fruit that showed no apparent differences comparable to non-infected control fruit at harvest. Nevertheless, the quality of fruit after cold storage was significantly affected by CGMMV infection. Virus-infected fruit were more susceptible to chilling injuries, as evidenced by the degradation of fruit peel chlorophyll, increased ion leakage, elevated levels of Malondialdehyde, and higher values of auto-luminescence. Furthermore, CGMMV-infected fruits were more susceptible to gray mold disease caused by Botrytis cinerea. Transcriptomic profiling of infected fruit at harvest revealed upregulation of genes associated with phenylpropanoid and ethylene metabolism, ERF and WRKY transcription factors, suggesting the involvement of several pathways in mediating the differential physiological response of CGMMV-infected fruits to postharvest insults. These results indicate viral infection of fruit as an additional, previously unappreciated factor that affect quality and postharvest losses of fresh produce.
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来源期刊
Postharvest Biology and Technology
Postharvest Biology and Technology 农林科学-农艺学
CiteScore
12.00
自引率
11.40%
发文量
309
审稿时长
38 days
期刊介绍: The journal is devoted exclusively to the publication of original papers, review articles and frontiers articles on biological and technological postharvest research. This includes the areas of postharvest storage, treatments and underpinning mechanisms, quality evaluation, packaging, handling and distribution of fresh horticultural crops including fruit, vegetables, flowers and nuts, but excluding grains, seeds and forages. Papers reporting novel insights from fundamental and interdisciplinary research will be particularly encouraged. These disciplines include systems biology, bioinformatics, entomology, plant physiology, plant pathology, (bio)chemistry, engineering, modelling, and technologies for nondestructive testing. Manuscripts on fresh food crops that will be further processed after postharvest storage, or on food processes beyond refrigeration, packaging and minimal processing will not be considered.
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