Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy Mildew

Grapevine (<i>Vitis vinifera</i>) is a valuable crop in Europe for both economical and cultural reasons, but highly susceptible to Downy mildew (DM). The generation of resistant vines is of critical importance for a sustainable viticulture and can be achieved either by introgression of r...

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Main Authors: Carlotta Pirrello, Giulia Malacarne, Marco Moretto, Luisa Lenzi, Michele Perazzolli, Tieme Zeilmaker, Guido Van den Ackerveken, Stefania Pilati, Claudio Moser, Lisa Giacomelli
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Biomolecules
Subjects:
Online Access:https://www.mdpi.com/2218-273X/12/2/182
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author Carlotta Pirrello
Giulia Malacarne
Marco Moretto
Luisa Lenzi
Michele Perazzolli
Tieme Zeilmaker
Guido Van den Ackerveken
Stefania Pilati
Claudio Moser
Lisa Giacomelli
author_facet Carlotta Pirrello
Giulia Malacarne
Marco Moretto
Luisa Lenzi
Michele Perazzolli
Tieme Zeilmaker
Guido Van den Ackerveken
Stefania Pilati
Claudio Moser
Lisa Giacomelli
author_sort Carlotta Pirrello
collection DOAJ
description Grapevine (<i>Vitis vinifera</i>) is a valuable crop in Europe for both economical and cultural reasons, but highly susceptible to Downy mildew (DM). The generation of resistant vines is of critical importance for a sustainable viticulture and can be achieved either by introgression of resistance genes in susceptible varieties or by mutation of Susceptibility (S) genes, e.g., by gene editing. This second approach offers several advantages: it maintains the genetic identity of cultivars otherwise disrupted by crossing and generally results in a broad-spectrum and durable resistance, but it is hindered by the poor knowledge about S genes in grapevines. Candidate S genes are <i>Downy mildew Resistance 6</i> (<i>DMR6</i>) and <i>DMR6-Like Oxygenases</i> (<i>DLO</i>s), whose mutations confer resistance to DM in Arabidopsis. In this work, we show that grapevine <i>VviDMR6-1</i> complements the Arabidopsis <i>dmr6-1</i> resistant mutant. We studied the expression of grapevine <i>VviDMR6</i> and <i>VviDLO</i> genes in different organs and in response to the DM causative agent <i>Plasmopara viticola</i>. Through an automated evaluation of causal relationships among genes, we show that <i>VviDMR6-1</i>, <i>VviDMR6-2</i>, and <i>VviDLO1</i> group into different co-regulatory networks, suggesting distinct functions, and that mostly <i>VviDMR6-1</i> is connected with pathogenesis-responsive genes. Therefore, <i>VviDMR6-1</i> represents a good candidate to produce resistant cultivars with a gene-editing approach.
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spelling doaj.art-dea634f1ee75430fbc1fe2f4ed06397f2023-11-23T18:57:47ZengMDPI AGBiomolecules2218-273X2022-01-0112218210.3390/biom12020182Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy MildewCarlotta Pirrello0Giulia Malacarne1Marco Moretto2Luisa Lenzi3Michele Perazzolli4Tieme Zeilmaker5Guido Van den Ackerveken6Stefania Pilati7Claudio Moser8Lisa Giacomelli9Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalyResearch and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalyResearch and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalyResearch and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalyResearch and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalySciENZA Biotechnologies B.V., Sciencepark 904, 1098 XH Amsterdam, The NetherlandsPlant-Microbe Interactions, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, The NetherlandsResearch and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalyResearch and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalyResearch and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38098 San Michele all’Adige, ItalyGrapevine (<i>Vitis vinifera</i>) is a valuable crop in Europe for both economical and cultural reasons, but highly susceptible to Downy mildew (DM). The generation of resistant vines is of critical importance for a sustainable viticulture and can be achieved either by introgression of resistance genes in susceptible varieties or by mutation of Susceptibility (S) genes, e.g., by gene editing. This second approach offers several advantages: it maintains the genetic identity of cultivars otherwise disrupted by crossing and generally results in a broad-spectrum and durable resistance, but it is hindered by the poor knowledge about S genes in grapevines. Candidate S genes are <i>Downy mildew Resistance 6</i> (<i>DMR6</i>) and <i>DMR6-Like Oxygenases</i> (<i>DLO</i>s), whose mutations confer resistance to DM in Arabidopsis. In this work, we show that grapevine <i>VviDMR6-1</i> complements the Arabidopsis <i>dmr6-1</i> resistant mutant. We studied the expression of grapevine <i>VviDMR6</i> and <i>VviDLO</i> genes in different organs and in response to the DM causative agent <i>Plasmopara viticola</i>. Through an automated evaluation of causal relationships among genes, we show that <i>VviDMR6-1</i>, <i>VviDMR6-2</i>, and <i>VviDLO1</i> group into different co-regulatory networks, suggesting distinct functions, and that mostly <i>VviDMR6-1</i> is connected with pathogenesis-responsive genes. Therefore, <i>VviDMR6-1</i> represents a good candidate to produce resistant cultivars with a gene-editing approach.https://www.mdpi.com/2218-273X/12/2/182<i>DMR6</i><i>DLO</i>downy mildew<i>Plasmopara viticola</i><i>Vitis vinifera</i>
spellingShingle Carlotta Pirrello
Giulia Malacarne
Marco Moretto
Luisa Lenzi
Michele Perazzolli
Tieme Zeilmaker
Guido Van den Ackerveken
Stefania Pilati
Claudio Moser
Lisa Giacomelli
Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy Mildew
Biomolecules
<i>DMR6</i>
<i>DLO</i>
downy mildew
<i>Plasmopara viticola</i>
<i>Vitis vinifera</i>
title Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy Mildew
title_full Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy Mildew
title_fullStr Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy Mildew
title_full_unstemmed Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy Mildew
title_short Grapevine <i>DMR6-1</i> Is a Candidate Gene for Susceptibility to Downy Mildew
title_sort grapevine i dmr6 1 i is a candidate gene for susceptibility to downy mildew
topic <i>DMR6</i>
<i>DLO</i>
downy mildew
<i>Plasmopara viticola</i>
<i>Vitis vinifera</i>
url https://www.mdpi.com/2218-273X/12/2/182
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