Fungicides, bio-controllers and resistance inducers affect bioactive compounds and oxidative metabolism in bell pepper plants inoculated with Phytophthora capsici

IF 2.2 4区 农林科学 Q2 HORTICULTURE
María Teresa Martínez-Damián, Damaris Leopoldina Ojeda-Barrios, Oscar Cruz-Alvarez
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Abstract

The rational use of chemical fungicides in chilli pepper (Capsicum annuum L.) for controlling Phytophthora capsici Leo. should include molecules that promote induced systemic resistance in the plant. The study objective was to assess how the application of fungicides, bio-controllers and resistance inducers affects bioactive compounds production and oxidative metabolism in pepper plants when inoculated with P. capsici zoospores. Statistical analyses show significant differences in total flavonoids, total phenols and salicylic acid concentrations in plants treated with Trichoderma harzianum, Acibenzolar-S-Methyl (ASM) and phosphonic acid. In addition, the application of ASM and Bacillus subtilis showed the highest values of antioxidant capacity. On the other hand, ASM application favoured increases in superoxide dismutase and phenyl ammonium lyase activity with values of 4.42 ± 0.016 (units · min−1 · g−1) and 3.90 ± 0.22 U · g−1, respectively. However, hydrogen peroxide production was similar to that of phosphonic acid treatments. Similarly, plants treated with B. subtilis and Metalaxyl-M showed increases in peroxidase enzyme activity with values ranging from 2.86 ± 0.05 to 4.52 ± 0.02 (μmol · [mg protein]−1 · min−1). Likewise, phosphonic acid-treated plants exhibited high catalase enzyme activity with values ranging from 2.38 ± 0.032 μmol H2O2 · min−1 · g−1 to 4.30 ± 0.024 μmol H2O2 · min−1 · g−1. The complementary use of products with biological and resistance-inducing functions could help to mitigate the environmental impacts that occur due to the use of chemical fungicides for controlling P. capsici on chilli pepper.
杀菌剂、生物控制剂和抗性诱导剂对接种了疫霉的甜椒植株的生物活性化合物和氧化代谢的影响
在辣椒(Capsicum annuum L.)中合理使用化学杀菌剂来控制疫霉(Phytophthora capsici Leo.本研究的目的是评估在辣椒植株中接种荚膜疫霉动物孢子后,施用杀菌剂、生物控制剂和抗性诱导剂如何影响生物活性化合物的产生和氧化代谢。统计分析表明,在使用哈茨真菌、Acibenzolar-S-Methyl(ASM)和膦酸处理的植物中,总黄酮、总酚和水杨酸的浓度存在显著差异。此外,ASM 和枯草芽孢杆菌的抗氧化能力值最高。另一方面,ASM 的应用有利于提高超氧化物歧化酶和苯基铵裂解酶的活性,其值分别为 4.42 ± 0.016(单位-分钟-1 -克-1)和 3.90 ± 0.22 U -克-1。不过,过氧化氢的产生与膦酸处理相似。同样,用枯草芽孢杆菌和 Metalaxyl-M 处理的植物显示过氧化物酶活性增加,数值从 2.86 ± 0.05 到 4.52 ± 0.02(μmol - [mg 蛋白质]-1 - min-1)不等。同样,经膦酸处理的植物也表现出较高的过氧化氢酶活性,其值从 2.38 ± 0.032 μmol H2O2 - min-1 - g-1 到 4.30 ± 0.024 μmol H2O2 - min-1 - g-1。补充使用具有生物和抗性诱导功能的产品有助于减轻因使用化学杀菌剂控制辣椒上的辣椒疫霉菌而对环境造成的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Folia Horticulturae
Folia Horticulturae Agricultural and Biological Sciences-Horticulture
CiteScore
3.40
自引率
0.00%
发文量
13
审稿时长
16 weeks
期刊介绍: Folia Horticulturae is an international, scientific journal published in English. It covers a broad research spectrum of aspects related to horticultural science that are of interest to a wide scientific community and have an impact on progress in both basic and applied research carried out with the use of horticultural crops and their products. The journal’s aim is to disseminate recent findings and serve as a forum for presenting views as well as for discussing important problems and prospects of modern horticulture, particularly in relation to sustainable production of high yield and quality of horticultural products, including their impact on human health.
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