The effect of defoliation on the 3-isobutyl-2-methoxypyrazine biosynthesis in wine grapes

https://doi.org/10.17221/70/2020-HORTSCICitation:

Lei Y.J., Ma Z.N., Shi P.B., Sun Y.X., Wang P., Guan X.Q. (2022): The effect of defoliation on the 3-isobutyl-2-methoxypyrazine biosynthesis in wine grapes. Hort. Sci (Prague), 49: 117–120.

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Field studies were conducted on Vitis vinifera cv. ‘Cabernet Sauvignon’ to evaluate the effects of the defoliation time (pre- and post-flowering and veraison) and severity on the 3-isobutyl-2-methoxypyrazine (IBMP) concentration and expression levels of the key related genes in grape berries. The IBMP concentration in the grapes decreased significantly at harvest after all the defoliation treatments. The earlier and heavier the defoliation treatment, the lower the IBMP concentration. The relative expression level of VvOMT3 in the berry skin was closely positively correlated with the IBMP accumulation in all the treatments. Early defoliation coupled with a 1-week delay in the harvest time may be an effective management strategy to control the IBMP concentration in grapes.

References:
Bindon K., Varela C., Kennedy J., Holt H., Herderich M. (2013): Relationships between harvest time and wine composition in Vitis vinifera L. cv. ‘Cabernet Sauvignon’ Grape and wine chemistry. Food Chemistry, 138: 1696–1705. https://doi.org/10.1016/j.foodchem.2012.09.146
 
Coombe B.G. (1995): Adoption of a system for identifying grapevine growth stages. Australian Journal of Grape and Wine Research, 1: 100–110.
 
Dunlevy J.D., Dennis E.G., Soole K.L., Perkins M.V., Davies C., Boss P.K. (2013): A methyltransferase essential for the methoxypyrazine-derived flavor of wine. Plant Journal, 75: 606–617. https://doi.org/10.1111/tpj.12224
 
Dunlevy J.D., Soole K., Perkins V.M., Dennis E.G., Keyzers R.A., Kalua C.M., Boss P.K. (2010): Two O-methyltransferases involved in the biosynthesis of methoxypyrazines: Grape-derived aroma compounds important to wine flavor. Plant Molecular Biology, 74: 77–89. https://doi.org/10.1007/s11103-010-9655-y
 
Koch A., Doyle C.L., Matthews M.A., Williams L.E., Ebeler S.E. (2010): 2-Methoxy-3-isobutylpyrazine in grape berries and its dependence on genotype. Phytochemistry, 71: 2190–2198. https://doi.org/10.1016/j.phytochem.2010.09.006
 
Lei Y.J., Xie S., Chen H.Z., Guan X.Q., Zhang Z.W. (2019): Behavior of 3-isobutyl-2-methoxypyrazine biosynthesis related to proposed precursor and intermediate in wine grape. Food Chemistry, 217: 609–616. https://doi.org/10.1016/j.foodchem.2018.10.121
 
Martin D., Grose C., Fedrizzi B. (2016): Grape cluster microclimate influences the aroma composition of ‘Sauvignon blanc’ wine. Food Chemistry, 210: 640–647. https://doi.org/10.1016/j.foodchem.2016.05.010
 
Mozzon M., Savini S., Boselli E., Thorngate J.H. (2016): The herbaceous character of wines. Italian Journal of Food Science, 28: 190–207.
 
Roujou-de-Boubée D., Cumsille A.M., Pons D., Dubordieu D. (2002): Location of 2-methoxy-3-isobutylpyrazine in ‘Cabernet sauvignon’ bunches and its extractability during vinification. American Journal of Enology and Viticulture, 53: 1–5.
 
Sidhu D., Lund J., Kotseridis Y., Saucier C. (2015): Methoxypyrazine analysis and influence of viticultural and enological procedures on their levels in grapes, musts, and wines. Critical Reviews in Food Science and Nutrition, 55: 485–502. https://doi.org/10.1080/10408398.2012.658587
 
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