Reflective Film Mulching Before Harvest Promotes Coloration and Expression of Ripening-Related Genes in Peach Fruits

IF 1 4区农林科学 Q3 HORTICULTURE Korean Journal of Horticultural Science & Technology Pub Date : 2021-06-01 DOI:10.7235/HORT.20210029

Dan-Bi Lee, Gook-Jin Lee, Y. You, S. Ahn, H. Yun

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引用次数: 3

Abstract

Fruit appearance is the most important factor of fruit quality in peach (Prunus persica). In order to determine the promotional effects of increased light in the canopy on peach fruit coloration, reflective film was applied under trees in the field 7 days before the harvest of ‘Taiko’ peach. We then investigated pigmentation of the peel, fruit traits like total soluble solids, titratable acidity, and hardness; the expression of genes related to fruit coloration and ripening in a peach fruits; and photosynthetically active radiation (PAR) inside the tree canopy treated with reflective film mulching. The color of fruit skins treated with reflective film mulching was improved significantly according to their Hunter value compared to untreated fruit. There was no significant change in total soluble solids, acid content, and hardness in fruits treated with reflective film mulching compared to control. Quantitative real-time PCR analysis revealed that transcript levels of anthocyanin biosynthetic related genes (F3H and CHS) were up-regulated; however, the expression of ethylene synthesis-related genes (ACO and ERS1) and ripening-related genes (PL and PME) was not enhanced by reflective film mulching. These results suggest that reflective film mulching improved light irradiance in the tree canopy, which promoted fruit skin coloration via the the induction of anthocyanin biosynthesis in the peel of peach. Additional key words: coloration, gene expression, peach, photosynthetically active radiation (PAR), quantitative real-time PCR, reflective film

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采前反射膜覆盖对桃果实着色及成熟相关基因表达的促进作用

桃果实外观是影响果实品质的重要因素。为了确定树冠增光对桃果实着色的促进作用，在“太果”桃收获前7天，在田间的树下施用反射膜。然后，我们研究了果皮的色素沉着、果实的特征，如总可溶性固形物、可滴定酸度和硬度；桃果实中与果实着色和成熟相关的基因的表达；以及经反射膜覆盖处理的树冠内的光合活性辐射（标准杆数）。与未处理的水果相比，反射膜覆盖处理的水果皮的Hunter值显著改善。与对照相比，反射膜覆盖处理的果实的总可溶性固形物、酸含量和硬度没有显著变化。实时定量PCR分析显示，花青素生物合成相关基因F3H和CHS的转录水平上调；然而，反射膜覆盖并没有增强乙烯合成相关基因（ACO和ERS1）和成熟相关基因（PL和PME）的表达。这些结果表明，反射膜覆盖改善了树冠的光照，通过诱导桃皮中花青素的生物合成促进了果皮的着色。附加关键词：着色、基因表达、桃、光合活性辐射（标准杆数）、定量实时PCR、反光膜

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来源期刊

Korean Journal of Horticultural Science & Technology 农林科学-园艺

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： Horticultural Science and Technology (abbr. Hortic. Sci. Technol., herein ‘HST’; ISSN, 1226-8763), one of the two official journals of the Korean Society for Horticultural Science (KSHS), was launched in 1998 to provides scientific and professional publication on technology and sciences of horticultural area. As an international journal, HST is published in English and Korean, bimonthly on the last day of even number months, and indexed in ‘SCIE’, ‘SCOPUS’ and ‘CABI’. The HST is devoted for the publication of technical and academic papers and review articles on such arears as cultivation physiology, protected horticulture, postharvest technology, genetics and breeding, tissue culture and biotechnology, and other related to vegetables, fruit, ornamental, and herbal plants.