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Assessing Spatial Variability of Grape Skin Flavonoids at the Vineyard Scale Based on Plant Water Status Mapping.
J Agric Food Chem. 2017 Jul 05; 65(26):5255-5265.JA

Abstract

Plant water stress affects grape (Vitis vinifera L. cv. Cabernet Sauvignon) berry composition and is variable in space due to variations in the physical environment at the growing site. We monitored the natural variability of grapevine water stress by stem water potential (Ψstem) and leaf gas exchange in an equi-distant grid in a commercial vineyard. Spatial differences were measured and related to topographical variation by modeling. Geospatial analysis and clustering allowed researchers to differentiate the vineyard block into two distinct zones having severe and moderate water stress where it varied by 0.2 MPa. Differences in stem water potential affected stomatal conductance, net carbon assimilation, and intrinsic water use efficiency that were different in all measurement dates. The two zones were selectively sampled at harvest for measurements of berry chemistry. The water status zones did not affect berry mass or yield per vine. Significant difference in total soluble solids was observed (3.56 Brix), and in titratable acidity, thus indicating a direct effect of water stress on ripening acceleration. Berry skin flavonol and anthocyanin composition and concentration were measured by C18 reversed-phased high-performance liquid chromatography (HPLC). The anthocyanins were most affected by the two water stress zones. The dihydroxylated anthocyanins were more affected than trihydroxylated; therefore, the ratio of the two forms increased. Flavonols were different in total amounts, but hydroxylation patterns were not affected. Proanthocyanidin isolates were characterized by acid catalysis in the presence of excess phloroglucinol followed by reversed-phase HPLC. Proanthocyanidins showed the least significant difference, although (+)-catechin terminal subunits were important predictors in a partial least square model used to summarize the multivariate relationships, predicting Ψstem or the management zone. The results provide fundamental information on vineyard water status to discriminate harvest or direction to vineyard operators to modify irrigation management to equilibrate berry composition at harvest.

Authors+Show Affiliations

Department of Viticulture and Enology, University of California Davis , 1 Shields Avenue, Davis, California 95616, United States.Department of Viticulture and Enology, University of California Davis , 1 Shields Avenue, Davis, California 95616, United States.Department of Viticulture and Enology, University of California Davis , 1 Shields Avenue, Davis, California 95616, United States.Department of Viticulture and Enology, University of California Davis , 1 Shields Avenue, Davis, California 95616, United States.E. J. Gallo Winery, 1541 Cummins Drive, Modesto, California 95358, United States.Lake Erie Research and Extension Center, Cornell University , 6592 West Main Road, Portland, New York 14769, United States.Department of Viticulture and Enology, University of California Davis , 1 Shields Avenue, Davis, California 95616, United States.Department of Viticulture and Enology, University of California Davis , 1 Shields Avenue, Davis, California 95616, United States.Department of Viticulture and Enology, University of California Davis , 1 Shields Avenue, Davis, California 95616, United States.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28602091

Citation

Brillante, Luca, et al. "Assessing Spatial Variability of Grape Skin Flavonoids at the Vineyard Scale Based On Plant Water Status Mapping." Journal of Agricultural and Food Chemistry, vol. 65, no. 26, 2017, pp. 5255-5265.
Brillante L, Martínez-Luscher J, Yu R, et al. Assessing Spatial Variability of Grape Skin Flavonoids at the Vineyard Scale Based on Plant Water Status Mapping. J Agric Food Chem. 2017;65(26):5255-5265.
Brillante, L., Martínez-Luscher, J., Yu, R., Plank, C. M., Sanchez, L., Bates, T. L., Brenneman, C., Oberholster, A., & Kurtural, S. K. (2017). Assessing Spatial Variability of Grape Skin Flavonoids at the Vineyard Scale Based on Plant Water Status Mapping. Journal of Agricultural and Food Chemistry, 65(26), 5255-5265. https://doi.org/10.1021/acs.jafc.7b01749
Brillante L, et al. Assessing Spatial Variability of Grape Skin Flavonoids at the Vineyard Scale Based On Plant Water Status Mapping. J Agric Food Chem. 2017 Jul 5;65(26):5255-5265. PubMed PMID: 28602091.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Assessing Spatial Variability of Grape Skin Flavonoids at the Vineyard Scale Based on Plant Water Status Mapping. AU - Brillante,Luca, AU - Martínez-Luscher,Johann, AU - Yu,Runze, AU - Plank,Cassandra M, AU - Sanchez,Luis, AU - Bates,Terrence L, AU - Brenneman,Charles, AU - Oberholster,Anita, AU - Kurtural,S Kaan, Y1 - 2017/06/26/ PY - 2017/6/13/pubmed PY - 2017/7/22/medline PY - 2017/6/13/entrez KW - anthocyanins KW - flavonols KW - proanthocyanidins KW - selective harvest KW - spatial variability KW - water stress SP - 5255 EP - 5265 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 65 IS - 26 N2 - Plant water stress affects grape (Vitis vinifera L. cv. Cabernet Sauvignon) berry composition and is variable in space due to variations in the physical environment at the growing site. We monitored the natural variability of grapevine water stress by stem water potential (Ψstem) and leaf gas exchange in an equi-distant grid in a commercial vineyard. Spatial differences were measured and related to topographical variation by modeling. Geospatial analysis and clustering allowed researchers to differentiate the vineyard block into two distinct zones having severe and moderate water stress where it varied by 0.2 MPa. Differences in stem water potential affected stomatal conductance, net carbon assimilation, and intrinsic water use efficiency that were different in all measurement dates. The two zones were selectively sampled at harvest for measurements of berry chemistry. The water status zones did not affect berry mass or yield per vine. Significant difference in total soluble solids was observed (3.56 Brix), and in titratable acidity, thus indicating a direct effect of water stress on ripening acceleration. Berry skin flavonol and anthocyanin composition and concentration were measured by C18 reversed-phased high-performance liquid chromatography (HPLC). The anthocyanins were most affected by the two water stress zones. The dihydroxylated anthocyanins were more affected than trihydroxylated; therefore, the ratio of the two forms increased. Flavonols were different in total amounts, but hydroxylation patterns were not affected. Proanthocyanidin isolates were characterized by acid catalysis in the presence of excess phloroglucinol followed by reversed-phase HPLC. Proanthocyanidins showed the least significant difference, although (+)-catechin terminal subunits were important predictors in a partial least square model used to summarize the multivariate relationships, predicting Ψstem or the management zone. The results provide fundamental information on vineyard water status to discriminate harvest or direction to vineyard operators to modify irrigation management to equilibrate berry composition at harvest. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/28602091/Assessing_Spatial_Variability_of_Grape_Skin_Flavonoids_at_the_Vineyard_Scale_Based_on_Plant_Water_Status_Mapping_ L2 - https://doi.org/10.1021/acs.jafc.7b01749 DB - PRIME DP - Unbound Medicine ER -