20.500.12556/RUL-136171 Salicylic and methyl salicylic acid affect quality and phenolic profile of apple fruits three weeks before the harvest Effects of spraying over apple trees (Malus domestica; ‘Topaz’) with methyl salicylic acid (MeSA) and SA during fruit maturation were investigated for quality parameters (weight, firmness, hue angle, red blush, yield) and phenolic profile of the peel and pulp (HPLC–mass spectrometry). These treatment effects were also investigated for activities of the phenylpropanoid pathway enzymes phenylalanine ammonia-lyase, chalcone synthase and isomerase (combined), and flavanone-3βhydroxylase. The MeSA and SA treatments resulted in poor fruit peel coloration, with higher hue angles and 20% and 10% lower red blush, respectively. Anthocyanin levels were also significantly lower (56%) for MeSA treatment. MeSA stimulated activities of phenylalanine ammonia-lyase and chalcone synthase/isomerase, which resulted in higher levels of flavanols (to 34%), flavonols (to 33%), and hydroxycinnamic acids (to 29%), versus control. Therefore, while these salicylate treatments improve levels of some beneficial polyphenols, they also have negative effects on the external quality characteristics of the fruit. phenolics bioactive compounds phenylalanine ammonium lyase chalcone synthase chalcone isomerase flavanone-3β-hydroxylase fenolne spojine fenoli bioaktivne spojine salicilna kislina rastni regulatorji jablana kemična sestava true false true Angleški jezik Slovenski jezik Članek v reviji 2022-04-14 11:15:43 2022-04-14 11:15:45 2022-09-15 04:13:30 0000-00-00 00:00:00 2021 0 0 15 str. iss. 9, art. 1807 Vol. 10 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 634.11/.12 2223-7747 10.3390/plants10091807 74702595 plants-10-01807-v2.pdf plants-10-01807-v2.pdf 1 F44C5D17BA2D3D533E3A25BB1B917C33 650ec1eaf76bfe1e179a986b3e560fb625988d01ac29434f7a72a4e936a331b0 af9902fa-bbd3-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155671 https://www.mdpi.com/2223-7747/10/9/1807 1 694733f5-bbd3-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155670 Biotehniška fakulteta 0 0 0