| Title: | Could foliar applications of methyl jasmonate and methyl jasmonate + urea improve must grape aroma composition? |
| Author(s): | Garde-Cerdan T; Gonzalez-Lazaro M; Marin-San Roman S; Saenz de Urturi I; Murillo-Pena R; Rubio-Breton P; Perez-Alvarez EP; |
| Address: | "Grupo VIENAP, Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de La Rioja, Universidad de La Rioja), Carretera de Burgos, km. 6, Logrono, La Rioja, 26007, Spain" |
| ISSN/ISBN: | 1097-0010 (Electronic) 0022-5142 (Linking) |
| Abstract: | "BACKGROUND: Grape aromas are formed by a great number of volatile compounds. Methyl jasmonate (MeJ) and urea (Ur) foliar applications have been studied to improve grape quality, but their combined application has never been studied. RESULTS: In both seasons, MeJ application enhanced terpenoids and C6 compounds synthesis, though decreased alcohols content. Moreover, MeJ + Ur treatment reduced benzenoids and alcohols and did not affect C(13) -norisoprenoids content. However, there was no clear effect of these treatments on the rest of the volatile compounds. Multifactorial analysis showed a season effect on all volatile compounds, except terpenoids. Discriminant analysis showed a good separation among samples under treatment criterion. The great effect of MeJ treatment on terpenoids was probably due to this elicitor influencing their biosynthesis. CONCLUSION: Season has a strong influence on grapes aromatic composition since it affects all volatile compound families except terpenoids. MeJ foliar application enhanced terpenoids, C(13) -norisoprenoids and C6 compounds synthesis, whereas decreased alcohols content; however, MeJ + Ur foliar treatment did not affect C(13) -norisoprenoids and C6 compounds, and decreased benzenoids and alcohols grape compounds. Therefore, no synergistic effect was observed between Ur and MeJ on grape volatile compounds biosynthesis. Foliar application of MeJ seems to be sufficient to improve the aromatic quality of grapes. (c) 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry" |
| Keywords: | Humans *Vitis/chemistry *Wine/analysis Odorants/analysis Urea/pharmacology/analysis Norisoprenoids Fruit/chemistry *Volatile Organic Compounds/analysis Tempranillo foliar application methyl jasmonate urea volatile compounds; |
| Notes: | "MedlineGarde-Cerdan, Teresa Gonzalez-Lazaro, Miriam Marin-San Roman, Sandra Saenz de Urturi, Itziar Murillo-Pena, Rebeca Rubio-Breton, Pilar Perez-Alvarez, Eva Pilar eng Gobierno de La Rioja/ Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria/ Ministerio de Ciencia, Innovacion y Universidades/ Ministerio de Universidades/ England 2023/03/12 J Sci Food Agric. 2023 Aug 15; 103(10):4813-4825. doi: 10.1002/jsfa.12549. Epub 2023 Mar 29" |
