terclim by ICS banner
IVES 9 IVES Conference Series 9 Vineyard microclimate alterations induced by black mulch through transcriptome reshaped the flavoromics of Cabernet Sauvignon

Vineyard microclimate alterations induced by black mulch through transcriptome reshaped the flavoromics of Cabernet Sauvignon

Abstract

To alter the vineyard microclimate and produce quality wine under a semi-arid climate, black geotextile inter-row mulch (M) was applied for two vintages (2016-2017). The grapes were sampled at three growing stages to conduct the untargeted metabolome and transcriptome analysis. The upregulated genes related to photosynthesis and heat shock proteins confirmed that M weakened the total light exposure and grapes suffered severe heat stress, resulting in lower sugar and higher acids at harvest. The integration of metabolome and transcriptome analysis identified the key genes responsible for the enhancements in phenylalanine, glutamine, ornithine, arginine, and C6 alcohol concentrations, and the downward trend in ε-viniferin, anthocyanins, flavonols, terpenes and norisoprenoids concentrations in M grapes. The effects of metabolites and transcriptome were more evident in vintage with weaker light indicating the key regulator of light exposure under semi-arid regions. In addition, the potential key transcription factors regulating the biosynthesis of the above metabolites including VviGATA11, VviHSFA6B, and VviWRKY03 were identified through weighted correlation network analysis. Taken together, this study provides a valuable overview of metabolic and transcriptomic responses of grapes exposed to inter-row mulch treatment in semi-arid climates, which could facilitate understanding the complex regulatory network of metabolites in response to microclimate changes.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Meng-Bo Tian1,2, Yu Wang1,2, Jun Wang1,2,*

1 Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
2 Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China

Contact the author*

Keywords

grape, floor management, microclimate, phenolic compounds, volatile compounds

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Influence of different Lachancea thermotolerans strains in wine acidity

Wine acidity is a parameter of great importance that influences different quality factors of the product such as biological stability or organoleptic characteristics. In the current context of climate change, which gives rise to wines with higher levels of ethanol and lower acidity, the biological acidification with yeast species such as Lachancea thermotolerans could be a solution.
In this work, the effect of the inoculation of different L. thermotolerans on the acidity of wine was studied.

Grape seed flavanols extraction and mechanical-acoustic properties as influenced by maceration time and ethanol content

AIM: Grape flavanols are involved in wine quality markers such as in-mouth sensations and colour stability.

Using atmospheric and statistical models to understand local climate and assess spatial temperature variability at a fine scale over the Stellenbosch wine district, South Africa

Atmospheric and statistical models were used to increase understanding of potential climatic impacts, resulting from mesoscale physical processes that cause significant temperature variability for viticulture within the Stellenbosch Wine of Origin district. Hourly temperature values from 16 automatic weather stations and 40 tinytag data loggers located in the vineyards were analysed.

Reconfiguring wine prescription : from traditional critics to digital social networks

The integration of digital social networks (DSN) has profoundly transformed communication practices within the wine industry, reorganizing the dynamics of prescription and marketing.

Carbon footprint in Austrian viticulture – Evaluation of the main polluters and possible solutions in entire the production chain

The sustainability certification ‘nachhaltig austria’ (www.sustainableaustria.com) has been offered to austrian wineries in an online version for 10 years and over 25% of the austrian wine-growing area is now certified. Since the 2022 harvest, ‘nachhaltig austria’ has automatically calculated the carbon footprint for each winery, per hectare of vineyard, per litre of bulk wine and per 0.75-litre bottle (poelz, w. And rosner, f.g. 2023). In last year’s publications and numerous presentations at national and international level, topics such as refilling glass bottles, lightweight glass bottles, renewable energy, … Etc.