Yield parameters and antioxidant compounds of tomato fruit: the role of plant defence inducers with or without Cucumber mosaic virus infection

Abstract

BACKGROUND: The production of fruit and vegetables rich in health-promoting components in an eco-friendly context represents the winning answer to the world population demand for food. In this study, the effects of different treatments on the yield and fruit chemical characteristics of tomato (Solanum lycopersicum L.) are reported. The treatments included three inducers of plant defence responses (chitosan, Trichoderma harzianum T-22 and Bacillus subtilis QST713) applied alone or before Cucumber mosaic virus infection. Fruit production and antioxidant compounds were investigated by ultrahigh-performance liquid chromatography (UHPLC) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). RESULTS: Compared to control fruit harvested from untreated and healthy plants, treatment with QST713 increased the fruit number. Furthermore, plant treatments with T22, QST713 and chitosan alone enhanced fruit carotenoids (lutein and -carotene), ascorbic acid and phenolic acids (caffeoyl glucoside and p-coumaroyl glucoside). In parallel, compared to fruit harvested from only CMV-infected plants, treatments with T22, QST713 and chitosan before CMV enhanced fruit ascorbic acid and flavonoids (quercetin 3-O-xylosyl-rutinoside and rutin). CONCLUSION: Antioxidant compounds of tomato fruit can increase with the application of the plant defence inducers, thus protecting both the consumer and plant health. Statistical data analysisData normal distribution was tested using the Shapiro-Wilk test (P ≤ 0.05) and homoscedasticity using Bartlett's test (P ≤ 0.05). Data were analysed by one-way analysis of variance (ANOVA), parametric and non-parametric, performing Tukey's HSD and Kruskal-Wallis test, respectively. Statistical data analyses were carried out using RStudio software, version 1.0.136 (Integrated Development for R; Boston, MA, USA).J Sci Food Agric 2019; 99: 5541-5549

Ocimum basilicum-Mediated Synthesis of Silver Nanoparticles Induces Innate Immune Responses against Cucumber Mosaic Virus in Squash

“…The obtained results indicated a reduction in both phenolic and flavonoid contents (42.8 ± 1.5 and 11.5 ± 0.8 mg/g d. wt, respectively) in CMV treatment compared to Mock plants (76.7 ± 9.1 and 13 ± 1.2 mg/g d. wt, respectively) which is in line with the free radical scavenging activity ( Figure 7 B,C). The reduction of phenolic and flavonoid contents was reported among the main traits for several viral plant infections [ 73 , 74 ] and could be attributed to viral suppressor activity and severe mosaic symptoms [ 75 ]. The treatment with Ag-NPs revealed parallel impacts on phenolic and flavonoid contents, where the pre-CMV treatment significantly enhanced both contents to 72.1 ± 9.7 and 13.9 ± 2.1 mg/g d. wt.…”

Engineering the polyphenolic biosynthetic pathway stimulates metabolic and molecular changes during fruit ripening in “Bronze” tomato

“…Dry samples were used for carotenoid quantification using the method described in [ 20 ]. Lycopene, lutein and β-carotene were used as external standards for carotenoids quantification.…”

Mastrevirus Effect on Metabolic and Biological Activities in Tomato Leaves

“…Antioxidant profile of tomato fruit could raise with the implementation of the plant defense inducers, which could be two way beneficial i.e. by protecting both plant health and consumer's health (Rendina et al, 2019). Earlier, combined consideration of antiviral agents with antioxidants had been deployed for the treatment of influenza related complications (Uchide and Toyoda, 2011).…”