terclim by ICS banner
IVES 9 IVES Conference Series 9 A versatile genome editing platform for grapevine: improving biotic and abiotic stress resilience 

A versatile genome editing platform for grapevine: improving biotic and abiotic stress resilience 

Abstract

New Plant Breeding Techniques (NPBTs) have arisen with the objective of surmounting the constraints inherent in conventional breeding methodologies, thereby enhancing plant resilience against both biotic and abiotic stresses. To date the application of genome editing in grapevine is still limited by the necessity to overcome recalcitrance to produce embryogenic calli and to regenerate plants. In our studies, we developed a smart and versatile genetic transformation system carrying all the most promising features of different genome editing approaches. In specific, we joined the GRF-GIF expression to improve regeneration, the systemic movement of the editing transcripts through tRNA-like sequences (TLS) and the cisgenic-like approach to remove transgenes. In parallel, we were able to assess the efficiencies of several guide RNAs (gRNAs) targeting genes with fall-out on drought stress and pathogen resilience. To the first aim, a gene belonging to glutathione S-transferase (VvGST40) and two gene belonging to pectin-methyl esterase (VvPME1 and VvPME3) have been targeted. Several edited lines were acclimatized and are currently under evaluation. In parallel, two genes belonging to the Mildew Locus-O (VvMLO6 and VvMLO7) and a non-expressor pathogenesis related gene (VvNPR3) were targeted to improve pathogen resilience. Acclimatized plants edited for MLO genes resulted almost resistant to Erysiphe necator (disease incidence reduction up to 80%), whereas NPR3-edited vines showed a significant reduction in disease severity (up to 70%). In conclusion, our approaches allowed to improve stress resilience of several economically-important genotypes such as Pinot noir, Chardonnay, Sangiovese and Glera but also widely used rootstocks (e.g., 110R and K5BB).

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Luca Nerva1*, Loredana Moffa1, Anna Narduzzo1, Ivan Bevilacqua1, Irene Perrone2, Chiara Pagliarani2, Giorgio Gambino2, Claudio Lovisolo3, Riccardo Velasco1, Walter Chitarra1

1 Research Centre for Viticulture and Enology, Council for Agricultural Research and Economics (CREA-VE), Via XXVIII Aprile 26, 31015 Conegliano (Italy)
2 Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Strada delle Cacce 73, 10135 Torino (Italy)
3 Department of Agricultural, Forest and Food Sciences (DISAFA), University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco (TO), Italy

Contact the author*

Keywords

powdery mildew, climate change, recalcitrance, cisgenic-like approach, New Plant Breeding Techniques

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Effets de l’application d’acide gibbérellique (GA3) sur la qualité de raisins et de vins produits en climat tropical au Nord-Est du Brésil

The honeydew moth Cryptoblabes gnidiella is the main problem for the wineries in the Northeast of the Brazil, because it attacks the bunch and reduces the quality of the grapes and the wines. In order to stretch out the bunch to facilitate the penetration of the insecticides, it was used gibberellic acid. Six treatments with different concentrations and different dates of application, and the control were compared.

Read More

Melatonin priming retards fungal decay in postharvest table grapes 

Postharvest losses of fruits may reach in some cases 40% in developed countries. This food waste has a significant carbon footprint and makes a major contribution toward greenhouse gas emissions so sustainable postharvest strategies are being investigated.
Melatonin, a well-known mammalian neurohormone, has been investigated as a priming agent to slow down fungal decay progression in postharvest climacteric and some non-climacteric fruits. However, the molecular and metabolic mechanisms responsible for such enhancement of disease tolerance are largely unknown.

Read More

Ultra-High Pressure Homogenization (UHPH): a technique that allows the reduction of SO2 in winemaking

Ultra-High Pressure Homogenization (UHPH) is an innovative, efficient and non-thermal technology that can be applied at different stages in winemaking in order to reduce or avoid the use of sulphites. During 2022 vintage, a batch of Xarel·lo must was processed by UHPH at 300 MPa with an inlet temperature (Ti) of 4 ºC. In order to verify the influence of the UHPH treatment in wine characteristics, alcoholic fermentations with this must (UHPH) were carried out and compared with a control batch (without SO2 addition (C)) and a sulphited batch, in which 60 mg/L of total SO2 (SO2) were added.

Read More

Determination of aromatic characteristics from Syrah and Tempranillo tropical wines elaborated in Northeast Brazil

Dans la region Nord-Est du Brésil, située à la Vallée du São Francisco, localiséee entre les paralleles 8-9º HS, la production de vins tropicaux a commencé il y a une vigntaine d’années. Dans cette région, il est possible d’avoir au minimum deux récoltes par an, car la moyenne de température est de 26 ºC, avec une pluviosité moyenne de 550 mm entre les mois de janvier-avril.

Read More

Dissecting the dual role of light regarding the plasticity of grape physiology and gene regulation through daylength simulation in a semi-arid region

Context and purpose of the study. Daylength is a key climatic factor within the terroir concept. However, the complex interplay of multiple variables in regions with varying daylengths makes it challenging to isolate and investigate this specific factor.

Read More