Abstract：
:Methyl jasmonate (MeJA) was applied in a vineyard on leaves and grape clusters of cv Sangiovese to test its ability to stimulate the production of aromas and identify the main genes involved in the biosynthetic pathways switched on by the elicitor. MeJA application led to a delay in grape technological maturity and a significant increase in the concentration of several berry aroma classes (about twice the total aroma: from around 3 to 6μg/g of berry). Of these, monoterpenes showed the most significant increase. An analysis of the expression of terpenoid biosynthesis genes confirmed that the MeJA application activated the related biosynthetic pathway. The expression of all the TPS genes analyzedwas higher in samples treated with MeJA. Also the wines produced by microvinification of Sangiovese treated and untreated grapes showed a rise in the aroma concentration as in berries, with an important impact on longevity and sensorial characters of wines.
journal_name
Food Chemjournal_title
Food chemistryauthors
D'Onofrio C,Matarese F,Cuzzola Adoi
10.1016/j.foodchem.2017.09.084subject
Has Abstractpub_date
2018-03-01 00:00:00pages
352-361eissn
0308-8146issn
1873-7072pii
S0308-8146(17)31559-5journal_volume
242pub_type
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