Rootstock, Vine Vigor, and Light Mediate Methoxypyrazine Concentrations in the Grape Bunch Rachis of Vitis vinifera L. cv. Cabernet Sauvignon

Simple item page
dc.contributor.authorSanders, R.D.
dc.contributor.authorBoss, P.K.
dc.contributor.authorCapone, D.L.
dc.contributor.authorKidman, C.M.
dc.contributor.authorBramley, R.G.V.
dc.contributor.authorNicholson, E.L.
dc.contributor.authorJeffery, D.W.
dc.date.issued2022
dc.description.abstractRamsey rootstock has previously been implicated in an approximate 8-fold increase of 3-isobutyl-2-methoxypyrazine (IBMP) levels in the rachis (grape bunch stem) of Vitis vinifera L. cv. Shiraz scions over own-rooted Shiraz vines at harvest. IBMP extracted from rachis during red wine fermentation can contribute potent “green” flavors. Methoxypyrazines (MPs) are normally present in Cabernet Sauvignon grapes, rachis, and wines, but it is unknown whether rootstocks can influence the MP concentration in the rachis. This study considered the effect of eight rootstocks including Ramsey and own roots on the concentrations of IBMP, 3- isopropyl-2-methoxypyrazine (IPMP), and 3-sec-butyl-2-methoxypyrazine (SBMP) in the rachis and grapes of Cabernet Sauvignon over two seasons. IBMP predominated, and its concentration in rachis and berries at harvest was significantly affected by rootstock and growing season. In the 2020 vintage, light exclusion, vine vigor, and spatial variation in vine vigor were shown to significantly affect MP concentrations in rachis.
dc.description.statementofresponsibilityRoss D. Sanders, Paul K. Boss, Dimitra L. Capone, Catherine M. Kidman, Robert G.V. Bramley, Emily L. Nicholson, and David W. Jeffery
dc.identifier.citationJournal of Agricultural and Food Chemistry, 2022; 70(17):5417-5426
dc.identifier.doi10.1021/acs.jafc.1c07978
dc.identifier.issn0021-8561
dc.identifier.issn1520-5118
dc.identifier.orcidSanders, R.D. [0000-0003-3568-4417]
dc.identifier.orcidBoss, P.K. [0000-0003-0356-9342]
dc.identifier.orcidCapone, D.L. [0000-0003-4424-0746]
dc.identifier.orcidJeffery, D.W. [0000-0002-7054-0374]
dc.identifier.urihttps://hdl.handle.net/2440/135096
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/IC170100008
dc.rights© 2022 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acs.jafc.1c07978
dc.subjectwine aroma
dc.subjectlight exposure
dc.subjectGC−MS
dc.subjectspatial variation
dc.subjectk-means clustering
dc.subject.meshVitis
dc.subject.meshFruit
dc.subject.meshWine
dc.titleRootstock, Vine Vigor, and Light Mediate Methoxypyrazine Concentrations in the Grape Bunch Rachis of Vitis vinifera L. cv. Cabernet Sauvignon
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Agriculture, Food and Wine publications
ARC Training Centre for Innovative Wine Production publications