Differential response of the accumulation of primary and secondary metabolites to leaf-to-fruit ratio and exogenous abscisic acid

IF 2.5 3区农林科学 Q3 FOOD SCIENCE & TECHNOLOGY

Australian Journal of Grape and Wine Research Pub Date : 2021-07-14 DOI:10.1111/ajgw.12509

L. Wang, E. Brouard, G. Hilbert, C. Renaud, J.-P. Petit, E. Edwards, A. Betts, S. Delrot, N. Ollat, S. Guillaumie, E. Gomès, Z. Dai

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引用次数: 8

Abstract

Background and Aims

Climate change is modifying grape berry composition and affecting wine quality and typicity. We evaluated the effects of leaf-to-fruit ratio and exogenous abscisic acid (ABA) application on the accumulation of primary and secondary metabolites in berries, in order to optimise climate change adaptation strategies.

Methods and Results

A range of leaf-to-fruit ratios (2, 4, 6, 8, 10 or 12 leaves per bunch) and exogenous ABA (400 mg/L) applied to Vitis vinifera L. cv. Cabernet Sauvignon fruiting-cuttings in a greenhouse prior to veraison were evaluated over six consecutive growing seasons (2013–2018). Reducing the leaf-to-fruit ratio decreased berry sugar and anthocyanin concentration, slightly increased total organic acids, and modified the composition of free amino acids. Exogenous ABA significantly enhanced sugar and anthocyanin concentration and partially restored the balance of sugar and anthocyanins under a low leaf-to-fruit ratio, without altering free amino acid concentration or sugar to acids ratios.

Conclusions

Combining manipulation of the leaf-to-fruit ratio with application of exogenous ABA offers a potential method to reduce berry sugar concentration, while maintaining anthocyanin concentration.

Significance of the Study

This study paves the way for possible adaptation strategies for viticulture to global climate change.

Abstract Image

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主次代谢物积累对叶果比和外源脱落酸的差异响应

背景与目的气候变化正在改变葡萄果实成分，影响葡萄酒的品质和典型性。为了优化气候变化适应策略，研究了叶果比和外源脱落酸(ABA)对浆果初级和次级代谢物积累的影响。方法与结果采用不同叶果比(每束2、4、6、8、10、12片叶)和外源ABA (400mg /L)处理葡萄。赤霞珠(Cabernet Sauvignon)在一个温室里进行了连续六个生长季节(2013-2018)的品系评估。降低叶果比降低了浆果糖和花青素的浓度，使总有机酸略有增加，并改变了游离氨基酸的组成。外源ABA在不改变游离氨基酸浓度和糖酸比的情况下，显著提高了叶片中糖和花青素的浓度，部分恢复了叶片中糖和花青素的平衡。结论通过调控叶果比与外源ABA的结合，可以在保持花青素含量的同时降低果实糖浓度。本研究为葡萄栽培对全球气候变化的适应策略铺平了道路。

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

Australian Journal of Grape and Wine Research 工程技术-食品科技

CiteScore

5.30

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： The Australian Journal of Grape and Wine Research provides a forum for the exchange of information about new and significant research in viticulture, oenology and related fields, and aims to promote these disciplines throughout the world. The Journal publishes results from original research in all areas of viticulture and oenology. This includes issues relating to wine, table and drying grape production; grapevine and rootstock biology, genetics, diseases and improvement; viticultural practices; juice and wine production technologies; vine and wine microbiology; quality effects of processing, packaging and inputs; wine chemistry; sensory science and consumer preferences; and environmental impacts of grape and wine production. Research related to other fermented or distilled beverages may also be considered. In addition to full-length research papers and review articles, short research or technical papers presenting new and highly topical information derived from a complete study (i.e. not preliminary data) may also be published. Special features and supplementary issues comprising the proceedings of workshops and conferences will appear periodically.