da Silva Joyce Alves Goulart, de Resende Mário Lúcio Vilela, Ribeiro Ingridy Simone, Lima Adriene Ribeiro, Albuquerque Luiz Roberto Marques, Monteiro Ana Cristina Andrade, Pereira Matheus Henrique Brito, Botelho Deila Magna Dos Santos
Universidade Federal de Lavras, UFLA, Departamento de Fitopatologia, Lavras, MG 37200-900, Brazil.
Instituto Federal do Sul de Minas Gerais (IFSULDEMINAS), Campus Muzambinho, Muzambinho, MG 37890-000, Brazil.
Plants (Basel). 2021 Sep 15;10(9):1915. doi: 10.3390/plants10091915.
Coffee production is one of the main agricultural activities in Brazil, and several coffee cultivars with disease resistance have already been developed. The secondary metabolites produced by plants are closely associated with defense strategies, and the resistance of coffee cultivars to bacterial halo blight (BHB) can be related to these compounds. Therefore, this study aims to compare a partially resistant coffee cultivar (Iapar-59) and a susceptible cultivar (Mundo Novo 376/4) to BHB ( pv) in relation to the chemical composition and antioxidant activity of the leaf extracts. In addition, this study determined the total phenolic and flavonoid contents and phenolic profiles of the Iapar-59 leaf extracts of plants inoculated with pv. . The Iapar-59 extract showed a higher content of phenolic compounds and flavonoids than the Mundo Novo 376/4 extract. Both cultivars contained gallic, chlorogenic and caffeic acids; however, the highest contents were quantified in the Iapar-59 cultivar. The leaf extracts from the Iapar-59 cultivar exhibited higher antioxidant activity. Higher concentrations of gallic, caffeic and chlorogenic acids and the presence of vanillin were detected in the extract of cultivar Iapar-59 inoculated with pv. .
咖啡生产是巴西主要的农业活动之一，并且已经培育出了几种具有抗病性的咖啡品种。植物产生的次生代谢产物与防御策略密切相关，咖啡品种对细菌性晕疫病（BHB）的抗性可能与这些化合物有关。因此，本研究旨在比较一个对BHB（pv）具有部分抗性的咖啡品种（Iapar-59）和一个易感品种（Mundo Novo 376/4）叶片提取物的化学成分和抗氧化活性。此外，本研究还测定了接种pv后的Iapar-59植株叶片提取物中的总酚和黄酮含量以及酚类物质谱。Iapar-59提取物中的酚类化合物和黄酮含量高于Mundo Novo 376/4提取物。两个品种都含有没食子酸、绿原酸和咖啡酸；然而，Iapar-59品种中的含量最高。Iapar-59品种的叶片提取物表现出更高的抗氧化活性。在接种pv的Iapar-59品种提取物中检测到更高浓度的没食子酸、咖啡酸和绿原酸以及香草醛的存在。
