terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 High-throughput sequencing analysis based on nematode indices revealed healthier soils of organic vineyards 

High-throughput sequencing analysis based on nematode indices revealed healthier soils of organic vineyards 

Abstract

Proper soil health assessments are crucial for sustainable cropland. Among the widely employed approaches, evaluating nematode community structure is particularly suitable. Traditionally, the taxonomic characterization of soil nematodes has relied on time-consuming morphology-based methods requiring experienced experts. However, molecular tools like high-throughput sequencing have emerged as efficient alternatives. In this study, we performed a metataxonomic analysis of soil samples collected from 57 vineyards in the DOCa Rioja region of Northern Spain, focusing on the impact of organic viticulture and cover cropping compared to integrated pest management (IPM) and tilling practices. Our goal was to investigate the potential benefits of organic viticulture and cover cropping on the quality and biodiversity of vineyard soils. The soil samples were collected to a depth of 20 cm, and the vineyards were categorized based on their pest and soil management strategies. Employing specific primers and following the Illumina amplicon protocol, we conducted sequencing on the Illumina MiSeq platform (2×300 bp). The resulting data underwent bioinformatics analysis utilizing Qiime2 and the SILVA v138.1 database to explore biodiversity measures and differentially abundant taxa. Over 80 taxonomic groups (genus/family) of nematodes were identified and utilized for calculating nematode-based indices using the NINJA platform. Findings showed no significant differences between cover cropping and tilling practices but for pest management. Thus, organic viticulture increased the α-biodiversity of soil nematodes, and nematode-based indices revealed raised environmental disturbance, higher occurrence of plant-parasitic nematodes of adverse implications for crop health, and declined soil food web structure in IPM vineyards. In conclusion, this approach appears well suited to assess vineyard soil health.

DOI:

Publication date: October 3, 2023

Issue: ICGWS 2023

Type: Article

Authors

Rubén Blanco-Pérez1*, María de Toro2, Sara Sánchez-Moreno3, Sergio Álvarez-Ortega4, Alícia Pou1, Raquel Campos-Herrera1

1 Instituto de Ciencias de la Vid y del Vino (CSIC-Univ. de La Rioja-Gobierno de La Rioja), Logroño, Spain.
Centro de Investigación Biomédica de La Rioja (CIBIR), Logroño, Spain.
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), Madrid, Spain.
Universidad Rey Juan Carlos, Madrid, Spain.

Contact the author*

Keywords

bioindicators, cover cropping, DNA-metabarcoding, pest management, tillage

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Overall conceptual characterization of aged dry white wines using a mental descriptive questionnaire

The purpose of the present study was to understand the overall concept of an aged dry white wine using a descriptive mental questionnaire. A total of 680 worldwide participants, grouped according to their involvement in the wine business, replied to an online questionnaire to characterize the sensory analytical and synthetic descriptors of an aged dry white wine. The descriptors were selected using a Check-All-That-Apply (CATA) approach concerning wine colour, aroma, taste, mouthfeel, and global appreciation.

Mapping grapevine metabolites in response to pathogen challenge: a Mass Spectrometry Imaging approach

Every year, viticulture is facing several outbreaks caused by established diseases, such as downy mildew and grey mould, which possess different life cycles and modes of infection. To cope with these different aggressors, grapevine must recognize them and arm itself with an arsenal of defense strategies.
The regulation of secondary metabolites is one of the first reactions of plants upon pathogen challenge. Their rapid biosynthesis can highly contribute to strengthen the defense mechanisms allowing the plant to adapt, defend and survive.

Comparison of the effects of hormone- and natural-based elicitors on key metabolic pathways in cv. Tempranillo

One of the most important effects of climate change in wine-growing areas is the advance of phenological stages, especially concerning early berry ripening. In the hottest seasons, this results in a lack of synchrony between sugar and phenolic ripeness. In order to cope with this fact, a general effort is being made by researchers and growers aiming at delaying ripening through different strategies. One of the proposed approaches is the application of elicitors. This study aims to assess the effect at the transcriptomic level of application of three elicitors (Vitalfit, Fruitel, and Protone) in Tempranillo.

Investigating the Ancient Egyptian wines: The wine jars database

In Ancient Egypt, wine was a luxury product consumed mainly by the upper classes and the royal family and offered to gods in daily religious rituals in the temples.
Since the Predynastic (4000-3100 BC) period, wine jars were placed in tombs as funerary offerings. From the Old Kingdom (2680-2160 BC) to the Greco-Roman (332 BC-395 AD) period, viticulture and winemaking scenes were depicted on the private tombs’ walls. During the New Kingdom (1539-1075 BC), wine jars were inscribed to indicate: vintage year, product, quality, provenance, property and winemaker’s name and title.

Adsorption of tetraconazole by organic residues and vineyard organically-amended soils 

Spain is the country with the largest wine-producing area in the EU and its productivity is largely controlled applying fungicides. However, residues of these compounds can move and contaminate surface and groundwater. The objective of this work was to evaluate the capacity of bioadsorbents from different origin to adsorb and immobilize tetraconazole by themselves or when applied as organic soil amendment, and to prevent soil and water contamination by this fungicide. The adsorption of tetraconazole by 3 organic residues: spent mushroom substrate (SMS), green compost (GC) and vine pruning sawdust (VP), as well as by vineyard soils unamended and amended individually with these residues at 1.5% (w/w) was evaluated using the batch equilibrium technique.