Macrowine 2021
IVES 9 IVES Conference Series 9 Application of plant growth regulators on Vitis vinifera L var. Mouchtaro affect berry quality characteristics & associated microbial communities

Application of plant growth regulators on Vitis vinifera L var. Mouchtaro affect berry quality characteristics & associated microbial communities

Abstract

The phenolic profile of the red grapevine varieties berries is a key quality factor and several techniques have been applied to improve it (Perez-Lamela et al., 2007; Singh SK and Sharma, 2010). The last decade the application of resistance elicitors and phytohormones is an innovative viticultural technique (Paladines-Quezada et al., 2021; Alenazi et al., 2019).In the present study, leaves and berries of a Greek red indigenous variety (Mouhtaro) sprayed with two elicitors, benzothiadiazole and chitosan and a plant hormone abscisic acid, during veraison. Physicochemical and phenolic characteristics of the berries and microbial communities of carposphere were analyzed during harvest.Differences in the microbial communities were observed after the application of the plant activators. CHT treatment increased the abundance of the beneficial lactic acid bacteria while the ABA treatment decreased the presence of spoilage fungi on the carposphere. Treatments differentiate total phenolics, anthocyanins and in the chemical characteristics of grape must with chitosan treated grapes had increased anthocyanins and skin-derived phenolics that correlated positively with the microbial taxa that was discriminant by LefSe analysis.In the present research, we investigated the effect of alternative environmentally friendly compounds on grape berry quality characteristics, and how the carposhere communities could be influenced by them, contributing to the establishment of more sustainable viticulture.

DOI:

Publication date: September 3, 2021

Issue: Macrowine 2021

Type: Article

Authors

Myrto Tsiknia, Nikolaos KONTOUDAKIS1, Maria DIMOPOULOU2, Yorgos KOTSERIDIS1

Soil Science and Agricultural Chemistry Lab, Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, Athens, Greece,Dimitrios-Evangelos MILIORDOS1;

1 Agricultural University of Athens, Department of Food Science and Human Nutrition, Laboratory of Enology and Alcoholic Drinks, Athens
2 Department of Wine, Vine, and Beverage Sciences, School of Food Science, University of West Attica, Athens, Greece

Contact the author

Keywords

Vitis vinifera, mouhtaro, resistance elicitors, plant hormones, grapevine microbiome, benzothiadiazole, chitozan, abscisic acid

Citation

Related articles…

Quantification of Eugenol in various matrixes from hybrids vines. Case study of Armagnac white spirits production

Nowadays, winemaking is dealing with great challenges, notably climate change, disease resistance and low pesticide inputs, desire for more sustainable agricultural productions and permanent changing of consumer preference.

Read More

Fertilization with Seaweed (Laminaria japonica) on the characteristics of the bunch and the quality of the grape must of ‘Cabernet Sauvignon’

The objective of the present work was to study the influence of the foliar application of seaweed (Laminaria japonica), on the bunch and on the must in the ‘Cabernet Sauvignon’ grape. The experiment was carried out in the years 2021/2022, in a 21-year-old commercial vineyard, in the municipality of “Dom Pedrito” – “Rio Grande do Sul” (RS). A completely randomized experimental design was used, with 4 treatments and 4 replications (7 plants per replication). The treatments were: T1- control treatment; T2- Exal Powder 5 g L-1; T3- Hidro Exal 15 ml L-1; T4- Exal Powder 5 g L-1+ Hidro Exal 15 ml L-1.

Read More

Shifting wine consumption trends (2019-2024): market dynamics, sustainability, and consumer preferences

This study examined the evolution of wine consumption trends from 2019 to 2024, analyzing market dynamics, sustainability preferences, and generational shifts in consumer behavior.

Read More

Sustainable management of grapevine trunk diseases

Grapevine trunk diseases (GTD) occur wherever grapes are grown and are considered the main biotic factor reducing yields and shortening vineyards’ lifespan. Currently, no product is available to eradicate GTD once grapevines are infected. Therefore, prophylactic strategies based on pruning wound protection and ‘remedial surgery’, the only eradication method based on the elimination of infected wood and renewal of the vine by means of new canes or suckers, are the only effective strategies available. The Canadian grape and wine industry focusses on a sustainable production and thus, looking for alternatives to chemicals for disease management is a top priority.

Read More

Use of glutathione and a selected strain of metschnikowia pulcherrima as alternatives to sulphur dioxide to inhibit natural tyrosinase of grape must and prevent browning

The enzymatic browning of grape must is still a major problem in oenology today [1] being particularly serious when the grapes have been infected by grey rot [2]. Browning is an oxidation process that causes certain foods to turn brown, which often leads to them being rejected by consumers [3]. This is a particular problem in the case of wine, because grape must is very vulnerable to enzymatic browning [4].

Read More