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Article

Genome-Wide Association Study Reveals a Genomic Region Associated with Mite-Recruitment Phenotypes in the Domesticated Grapevine (Vitis vinifera)

1
Department of Plant Biology, Program in Ecology, Evolution, and Behavior, Michigan State University, East Lansing, MI 48824, USA
2
Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: José M. Leitão
Genes 2021, 12(7), 1013; https://doi.org/10.3390/genes12071013
Received: 1 June 2021 / Revised: 25 June 2021 / Accepted: 28 June 2021 / Published: 30 June 2021
(This article belongs to the Special Issue Powdery Mildew Resistance Genetics)
Indirect defenses are plant phenotypes that reduce damage by attracting natural enemies of plant pests and pathogens to leaves. Despite their economic and ecological importance, few studies have investigated the genetic underpinnings of indirect defense phenotypes. Here, we present a genome-wide association study of five phenotypes previously determined to increase populations of beneficial (fungivorous and predacious) mites on grape leaves (genus Vitis): leaf bristles, leaf hairs, and the size, density, and depth of leaf domatia. Using a common garden genetic panel of 399 V. vinifera cultivars, we tested for genetic associations of these phenotypes using previously obtained genotyping data from the Vitis9kSNP array. We found one single nucleotide polymorphism (SNP) significantly associated with domatia density. This SNP (Chr5:1160194) is near two genes of interest: Importin Alpha Isoform 1 (VIT_205s0077g01440), involved in downy mildew resistance, and GATA Transcription Factor 8 (VIT_205s0077g01450), involved in leaf shape development. Our findings are among the first to examine the genomic regions associated with ecologically important plant traits that facilitate interactions with beneficial mites, and suggest promising candidate genes for breeding and genetic editing to increase naturally occurring predator-based defenses in grapevines. View Full-Text
Keywords: acarodomatia; defense mutualisms; indirect defense; mite domatia; mite defense; powdery mildew acarodomatia; defense mutualisms; indirect defense; mite domatia; mite defense; powdery mildew
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MDPI and ACS Style

LaPlante, E.R.; Fleming, M.B.; Migicovsky, Z.; Weber, M.G. Genome-Wide Association Study Reveals a Genomic Region Associated with Mite-Recruitment Phenotypes in the Domesticated Grapevine (Vitis vinifera). Genes 2021, 12, 1013. https://doi.org/10.3390/genes12071013

AMA Style

LaPlante ER, Fleming MB, Migicovsky Z, Weber MG. Genome-Wide Association Study Reveals a Genomic Region Associated with Mite-Recruitment Phenotypes in the Domesticated Grapevine (Vitis vinifera). Genes. 2021; 12(7):1013. https://doi.org/10.3390/genes12071013

Chicago/Turabian Style

LaPlante, Erika R., Margaret B. Fleming, Zoë Migicovsky, and Marjorie G. Weber. 2021. "Genome-Wide Association Study Reveals a Genomic Region Associated with Mite-Recruitment Phenotypes in the Domesticated Grapevine (Vitis vinifera)" Genes 12, no. 7: 1013. https://doi.org/10.3390/genes12071013

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