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Foliar Phenylalanine Application Promoted Antioxidant Activities in Cabernet Sauvignon by Regulating Phenolic Biosynthesis
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-12-15 , DOI: 10.1021/acs.jafc.0c05565
Xianghan Cheng 1 , Xuefei Wang 1 , Ang Zhang 2 , Panpan Wang 1 , Qianyi Chen 1 , Tingting Ma 1 , Wanping Li 1 , Yanying Liang 1 , Xiangyu Sun 1 , Yulin Fang 1
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-12-15 , DOI: 10.1021/acs.jafc.0c05565
Xianghan Cheng 1 , Xuefei Wang 1 , Ang Zhang 2 , Panpan Wang 1 , Qianyi Chen 1 , Tingting Ma 1 , Wanping Li 1 , Yanying Liang 1 , Xiangyu Sun 1 , Yulin Fang 1
Affiliation
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The effects of foliar phenylalanine application during veraison (FPV) on phenolic biosynthesis and correlation between phenolic compositions and antioxidant activities in Cabernet Sauvignon grown in field and greenhouse were investigated. Solutions with 69 and 138 mg N/vine phenylalanine (Pe1 and Pe2, respectively) and an aqueous solution without nitrogen (CK) were sprayed three times during veraison. FPV significantly improved antioxidant activities in grapes using the two culture methods. The most contributory phenolic compositions to antioxidant activities were anthocyanins and stilbenes following FPV compared with CK. Phenylalanine metabolism, abscisic acid content, and expression levels of VvPAL, VvCHS, VvF3H, VvUFGT, and VvSTS in the phenolic synthesis pathway were increased from the first FPV to harvest. Although Pe2 significantly increased total phenolic contents than Pe1, antioxidant parameters were not markedly affected by the phenylalanine dose. Our finding revealed that FPV was a useful fertilization method to enhance antioxidant activities in grapes in nitrogen-deficient vineyards.
中文翻译:
叶苯丙氨酸的应用通过调节酚类生物合成促进赤霞珠的抗氧化活性。
研究了在田间和温室种植赤霞珠时,叶面喷施苯丙氨酸对番茄酚类生物合成的影响以及酚类成分与抗氧化活性之间的关系。在检查期间,将含有69和138 mg N /藤苯丙氨酸(分别为Pe1和Pe2)和不含氮的水溶液(CK)的溶液喷雾三遍。使用两种培养方法,FPV可以显着提高葡萄的抗氧化活性。与CK相比,FPV后对抗氧化活性影响最大的酚类成分是花青素和对苯二酚。苯丙氨酸代谢,脱落酸含量以及VvPAL,VvCHS,VvF3H,VvUFGT和酚类合成途径中的VvSTS从第一个FPV到收获期均增加。尽管Pe2比Pe1显着增加了总酚含量,但苯丙氨酸的剂量不会明显影响抗氧化剂的参数。我们的发现表明,FPV是一种有用的施肥方法,可以提高缺氮葡萄园中葡萄的抗氧化活性。
更新日期:2020-12-30
中文翻译:
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叶苯丙氨酸的应用通过调节酚类生物合成促进赤霞珠的抗氧化活性。
研究了在田间和温室种植赤霞珠时,叶面喷施苯丙氨酸对番茄酚类生物合成的影响以及酚类成分与抗氧化活性之间的关系。在检查期间,将含有69和138 mg N /藤苯丙氨酸(分别为Pe1和Pe2)和不含氮的水溶液(CK)的溶液喷雾三遍。使用两种培养方法,FPV可以显着提高葡萄的抗氧化活性。与CK相比,FPV后对抗氧化活性影响最大的酚类成分是花青素和对苯二酚。苯丙氨酸代谢,脱落酸含量以及VvPAL,VvCHS,VvF3H,VvUFGT和酚类合成途径中的VvSTS从第一个FPV到收获期均增加。尽管Pe2比Pe1显着增加了总酚含量,但苯丙氨酸的剂量不会明显影响抗氧化剂的参数。我们的发现表明,FPV是一种有用的施肥方法,可以提高缺氮葡萄园中葡萄的抗氧化活性。