Exogenous 24‐epibrassinolide activates detoxification enzymes to promote degradation of boscalid in cherry tomatoes

Abstract

BACKGROUND Boscalid is often used to extend the storage time of postharvest cherry tomato. Pesticide residue has become an issue of food safety. This study sought to investigate the spatial distribution of boscalid residue in cherry tomato fruits and to determine the effect of 24‐epibrassinolide (EBR) in promoting boscalid degradation. RESULTS Boscalid could quickly penetrate into cherry tomatoes, but mainly remained in the peel. The migration of boscalid from the peel into the core was a time‐consuming and complex process during storage. After 72 h, boscalid residues in the pulp and the core began to accumulate gradually. The exogenous application of EBR activated peroxidase, glutathione reductase and glutathione S‐transferase, and effectively promoted the degradation of boscalid by a maximum decrease of 44.8% in peel, 54.0% in pulp and 71.2% in core. CONCLUSION As one of the common pesticides, boscalid had a strong ability to enter the cherry tomato and thus become a potential risk for public consumption. Therefore, rational use of pesticides is recommended. The results of this study indicate that the possible risk of boscalid residue could be alleviated by EBR pretreatment through activating detoxification enzymes. © 2020 Society of Chemical Industry

The spatial distribution and migration of three typical fungicides in postharvest satsuma mandarin (Citrus unshiu Marc.) fruit

“…The migration and accumulation of fungicides was a time-consuming process. A previous study pointed out that boscalid residue in the pulp and the core of cherry tomatoes accumulated until 120 h due to the complex migration behavior (Yang et al, 2020). According to our study, the concentration of three fungicide residues in the edible pulp was far lower than the MRL.…”

SlbHLH22-Induced Hypertrophy Development Is Related to the Salt Stress Response of the GTgamma Gene in Tomatoes

“…For hormonal treatment, all the potted tomato seedlings were sprayed with different hormonal (50 µM 3-Indoleacetic Acid IAA, 50 µM Gibberellin GA, 100 µM 1-Aminocyclopropane-1-Carboxylicacid, ACC, 100 µM Abscisic Acid ABA, 50 µM Methyl Jasmonic Acid MeJA; 50 µM Epibrassinolide EBR; 50 µM Uniconazole NA) (Coolaber, Beijing, Chia) and distilled water (the control). Plants were enclosed in plastic immediately and left for 0, 1, 4, 8, 12, 24 h; the leaves of the tomato seedlings were taken and stored at −80 • C until use [19][20][21].…”

Absolute Configuration, Enantioselective Bioactivity, and Mechanism Study of the Novel Chiral Fungicide Benzovindiflupyr

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“…4,5 Boscalid is the first broadspectrum fungicide and can control almost all types of fungal diseases. 6 Pydiflumetofen, as the fourth SDHI fungicide commercialized by Syngenta Crop Protection in 2016, shows a high efficient inhibitory activity against fungal diseases in many crops, including wheat, tomato, and soybean, and its global sales reached 40 million dollars in 2018. 7 SDHIs, as the second most prevalent group of fungicides, has become a focus in the global research on fungicides.…”