Kaolin impacts on hormonal balance, polyphenolic composition and oenological parameters in red grapevine berries during ripening

IF 1.5 4区农林科学 Q3 PLANT SCIENCES

Journal of Berry Research Pub Date : 2021-06-03 DOI:10.3233/JBR-210737

S. Bernardo, L. Dinis, Nelson Machado, A. Barros, Marta Pitarch-Bielsa, A. Gómez-Cádenas, J. Moutinho-Pereira

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引用次数: 4

Abstract

BACKGROUND: Kaolin particle-film application is a well-known strategy to avoid fruit damage. However, its putative role in balancing berry ripening under a changing climate remains poorly explored. OBJECTIVE: We assessed kaolin treatment effect on several ripening berry components, hormonal balance and oenological parameters of the field-grown Touriga-Franca (TF) and Touriga–Nacional (TN) grapevine varieties at veraison (EL35) and ripening (EL38) during two growing seasons (2017 and 2018). RESULTS: Under the adverse summer conditions (two heatwave events) of 2017, kaolin application increased 211.2 %and 51.4 %the salicylic acid (SA) and abscisic acid (ABA) levels in TF berries at EL38, while no significant differences were observed in TN. Conversely, TF, and TN kaolin treated berries showed lower SA and ABA accumulation in 2018, respectively. Tartaric acid content increased about 17.2 %, and 24.2 %in TF and TN treated berries at stage EL35 in the 2017 growing season. Though kaolin treatment had no consistent effect on anthocyanins accumulation, flavonoids, ortho-diphenols and tannins increased in kaolin treated grapevines in 2017. CONCLUSIONS: This study highlights the key role of climate in triggering ripening related processes and fruit quality potential. Nevertheless, kaolin treated grapevines displayed an improved response to oxidative stress signals by increasing secondary metabolites accumulation in warm vintages. Kaolin application promoted different varietal responses, with a possible ripening delaying effect in TF, reinforcing its efficiency in alleviating severe summer stress impacts.

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高岭土对红葡萄果实成熟过程中激素平衡、多酚成分和酿酒参数的影响

背景:应用高岭土颗粒膜是众所周知的避免水果损伤的策略。然而，它在气候变化下平衡浆果成熟的假定作用仍未得到充分探讨。目的:评价高岭土处理对大田栽培Touriga-Franca (TF)和Touriga-Nacional (TN)葡萄品种在2017年和2018年两个生长季节(EL35)和成熟期(EL38)几种成熟果实成分、激素平衡和酿酒参数的影响。结果:在2017年夏季不利条件下(2个热浪事件)，施用高岭土使水杨酸(SA)和脱落酸(ABA)含量在EL38下分别增加21.2%和51.4%，而TN含量无显著差异。相反，在2018年，施用TF和TN高岭土处理的浆果的SA和ABA积累量分别下降。在2017年生长季EL35期，TF和TN处理的果实酒石酸含量分别提高了17.2%和24.2%。虽然高岭土处理对花青素积累的影响不一致，但2017年高岭土处理葡萄的黄酮、邻二酚和单宁含量均有所增加。结论:本研究强调了气候在触发成熟相关过程和果实品质潜力中的关键作用。然而，高岭土处理的葡萄通过增加次生代谢物的积累，在温暖的年份中表现出对氧化应激信号的改善反应。施用高岭土促进了不同品种的响应，可能具有延迟冬小麦成熟的作用，增强了其缓解夏季严重胁迫影响的效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Berry Research Biochemistry, Genetics and Molecular Biology-Biochemistry

CiteScore

3.50

自引率

11.80%

发文量

期刊介绍： The main objective of the Journal of Berry Research is to improve the knowledge about quality and production of berries to benefit health of the consumers and maintain profitable production using sustainable systems. The objective will be achieved by focusing on four main areas of research and development: From genetics to variety evaluation Nursery production systems and plant quality control Plant physiology, biochemistry and molecular biology, as well as cultural management Health for the consumer: components and factors affecting berries'' nutritional value Specifically, the journal will cover berries (strawberry, raspberry, blackberry, blueberry, cranberry currants, etc.), as well as grapes and small soft fruit in general (e.g., kiwi fruit). It will publish research results covering all areas of plant breeding, including plant genetics, genomics, functional genomics, proteomics and metabolomics, plant physiology, plant pathology and plant development, as well as results dealing with the chemistry and biochemistry of bioactive compounds contained in such fruits and their possible role in human health. Contributions detailing possible pharmacological, medical or therapeutic use or dietary significance will be welcomed in addition to studies regarding biosafety issues of genetically modified plants.