biostudies-literatureSnyder TU.S. Department of Agriculture (USDA)Agricultural Research Foundation (ARF)U.S. Department of AgricultureOSU | CAS | Oregon Wine Research Institute, College of Agricultural Sciences, Oregon State UniversityAgricultural Research FoundationOSU | CAS | Oregon Wine Research Institute, College of Agricultural Sciences, Oregon State University (OWRI)e0081024https://www.ebi.ac.uk/biostudies/studies/S-EPMC11409673biostudies-literatureUnknown90(9)The apiculate yeast genus <i>Hanseniaspora</i> has appeared frequently in enological research for more than 100 years, mostly focused upon the species <i>H. uvarum</i> due to its notable capacity to cause spoilage. Recently, there has been increased research into the potential benefits of other <i>Hanseniaspora</i> species, such as <i>H. vineae,</i> in producing more complex wines. Furthermore, large-scale DNA sequencing-based (metabarcoding) vineyard ecology studies have suggested that <i>Hanseniaspora</i> species may not be evenly distributed. To address potential differences across geographical areas in Oregon, we sampled extensively from 12 vineyards within the Willamette Valley American Viticultural Area (AVA), across 2 sub-AVAs (Eola-Amity Hills and Yamhill-Carlton). Metabarcoding waApplied and environmental microbiologyContributions of &lt;i&gt;Hanseniaspora&lt;/i&gt; species to Pinot Noir microbial terroir in Oregon's Willamette Valley wine region.PMC11409673ORE00221Curtin COsborne JSnyder TfalseContributions of &lt;i&gt;Hanseniaspora&lt;/i&gt; species to Pinot Noir microbial terroir in Oregon's Willamette Valley wine region.The apiculate yeast genus <i>Hanseniaspora</i> has appeared frequently in enological research for more than 100 years, mostly focused upon the species <i>H. uvarum</i> due to its notable capacity to cause spoilage. Recently, there has been increased research into the potential benefits of other <i>Hanseniaspora</i> species, such as <i>H. vineae,</i> in producing more complex wines. Furthermore, large-scale DNA sequencing-based (metabarcoding) vineyard ecology studies have suggested that <i>Hanseniaspora</i> species may not be evenly distributed. To address potential differences across geographical areas in Oregon, we sampled extensively from 12 vineyards within the Willamette Valley American Viticultural Area (AVA), across 2 sub-AVAs (Eola-Amity Hills and Yamhill-Carlton). Metabarcoding wa2024-01-01T00:00:00Z2024 Sep2025-04-04T00:30:15.301Z2025-04-04T00:30:15.301ZS-EPMC114096733913648810.1128/aem.00810-24