terclim by ICS banner
IVES 9 IVES Conference Series 9 Open-GPB 9 Open-GPB-2024 9 Flash - New biotechnological tools 9 Exploring the impact of NPR3 gene silencing on the interaction between grapevine and mycorrhizal fungi through genome editing

Exploring the impact of NPR3 gene silencing on the interaction between grapevine and mycorrhizal fungi through genome editing

Abstract

One of the main plant defence mechanisms is the Systemic Acquired Resistance (SAR) mediated by Salicylic Acid (SA). This is a heightened and broad-spectrum immune response initiated by the exposure to pathogens, inducing resistance not only in the infected site, but also throughout the entire plant. It was demonstrated that plant immune system can be regulated by two classes of SA receptors: NONEXPRESSOR OF PR GENES 1 (NPR1) and NPR1-LIKE PROTEIN 3 and 4 (NPR3/NPR4). While NPR1 is required for SA-induction followed by the expression of pathogenesis-related (PR) protein and resistance against pathogens, NPR3/NPR4 serve as transcriptional co-repressors of SA-responsive genes. The aim of this work was to trigger SAR by suppressing NPR3, and to investigate how plant response affects its ability to recruit beneficial microorganisms, specifically arbuscular mycorrhizal fungi (AMF). To this aim, embryogenic calli were obtained from anther and ovaries of grapevine (cultivar Chardonnay) and NPR3 knock out lines were achieved using CRISPR/Cas9 technique. Three regenerated lines, along with a backbone and a wild-type lines, were inoculated in axenic condition with the AMF Rhizophagus irregularis to test their recruitment ability. After the acclimatation, plants were transferred in the greenhouse and forty-five days later both roots and leaves were collected. Root colonization was evaluated using the Trouvelot method and significant differences in colonization level were observed among plants. Consequently, root DNA and RNA were extracted for metabarcoding and RNAseq analysis. Additionally, metabolomic analysis targeting metabolites involved in plant-microorganism interactions are ongoing.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Ivan Bevilacqua1,2, Loredana Moffa1, Serena Varotto2, Raffaella Balestrini3, Walter Chitarra1,3, Luca Nerva1,3

1Council for Agricultural Research and Economics – Research Centre for Viticulture and Enology (CREA-VE). Via XXVIII Aprile, 26, 31015 Conegliano (TV), Italy
2University of Padua, Department of Agronomy, Food, Natural Resources, Animals and Environment, Agripolis, Viale dell’Università 16 – 35020 Legnaro (Pd)
3National Research Council of Italy – Institute for Sustainable Plant Protection (IPSP-CNR). Strada delle Cacce, 73, 10135 Torino (TO), Italy 

Contact the author*

Keywords

CRISPR/Cas9, grapevine, arbuscular mycorrhizal fungi (AMF), Systemic Acquired Resistance (SAR), multi-omics

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Portable NIR spectroscopy for nutrient profiling in rootstock and scion material: enhancing decision-making in the grafting industry

The success of grafting in viticulture is deeply influenced by the nutrient composition of both rootstock and scion
materials. Key components such as nitrogen and carbohydrates play a crucial role in graft compatibility, establishment,
and overall plant vigor [1].

Read More

Tools for terroir classification for the grape variety Kékfrankos

A 3-year study was carried out in order to evaluate the ecophysiology, yield and quality characteristics of Vitis vinifera L. cv. Kékfrankos (syn. Limberger) at Eger-Nagyeged hill (steep slope) and at Eger-Kőlyuktető (flat) vineyard sites located in the Eger wine region, Hungary.

Read More

Elaboration des cartes conseils pour une gestion du terroir à l’échelle parcellaire: utilisation d’algorithmes bases sur des paramètres physiques du milieu naturel

The “Anjou Terroirs” programme aims at bringing the necessary scientific basis for a ratio­nal and reasoned exploitation of the technical itinerary of the terroir. The scale study is 1/12500. For the mapping, many parameters, such as the granulometry or the depth of soil are observed to each point of caracterisation.

Read More

Irrigation as a tool for heatwave mitigation: the effect of irrigation intensity and timing in Cabernet Sauvignon

Heatwave events, defined as 2 or more days reaching ≥ 38 °C, are an increasingly frequent phenomenon threatening grape production worldwide. Heat stress has been shown to have negative consequences on grapevine physiology, leading to increased evaporative demand and intensified water stress. Due to heatwaves overlapping with important stages of grapevine reproductive development, spanning from berry set to the ripening stage, severe heat can potentially compromise yield and grape quality. The physiological response of grapevine to heat stress suggests a potential use of irrigation to mitigate heatwaves, however there is limited information regarding the irrigation amounts and timings needed for this purpose. Following up on a pivotal trial conducted between 2019 and 2022, in this study irrigation treatments with varying intensity and timing of application were refined to determine their potential mitigation of heat-associated damage to yield and fruit composition.

Read More

Physiological and growth reaction of Shiraz/101-14 Mgt to row orientation and soil water status

Advanced knowledge on grapevine row orientation is required to improve establishment, management and outcomes of vineyards on terroirs with different environmental conditions (climate, soil, topography) and in view of a future change to more extreme climatic conditions. The purpose of this study was to determine the combined effect of row orientation, plant water status and ripeness level on the physiological and viticultural reaction of Shiraz/101-14 Mgt.

Read More