Effect of patulin from penicillium vulpinum on the activity of Glutathione-S-Transferase and selected antioxidative enzymes in Maize

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Ismaiel, A.A.; Papenbrock, J.: Effect of patulin from penicillium vulpinum on the activity of Glutathione-S-Transferase and selected antioxidative enzymes in Maize. In: International Journal of Environmental Research and Public Health 14 (2017), Nr. 7, No. 825. DOI: https://doi.org/10.3390/ijerph14070825

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Abstract: 
The mycotoxin patulin (PAT) was purified from Penicillium vulpinum CM1 culture that has been isolated from a soil cultivated with maize. The effect of PAT and of a fungal culture filtrate on the activities of glutathione-S-transferase (GST) and some antioxidant enzymes viz. ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR) and monodehydroascorbate reductase (MDHAR) was investigated in roots and shoots of 8-day-old maize seedlings. PAT and culture filtrate caused significant reduction effects in a dose-related manner on the total GST activity. Upon application of the high PAT concentration (25 μg·mL−1) and of the concentrated fungal filtrate (100%, v/v), the reduction in GST activity of roots was 73.8–76.0% and of shoots was 60–61.7%. Conversely, significant increases in the activities of antioxidant enzymes were induced. Application of 25 μg·PAT·mL−1 increased APX, GR, DHAR, and MDHAR activity of root by 2.40-, 2.00-, 1.24-, and 2.16-fold, respectively. In shoots, the enzymatic activity was increased by 1.57-, 1.45-, 1.45-, and 1.61-fold, respectively. Similar induction values of the enzymatic activity were obtained upon application of the concentrated fungal filtrate. This is the first report describing the response of GST and antioxidant enzyme activities of plant cells to PAT toxicity.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Naturwissenschaftliche Fakultät

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1 image of flag of Germany Germany 71 89.87%
2 image of flag of Spain Spain 3 3.80%
3 image of flag of China China 2 2.53%
4 image of flag of No geo information available No geo information available 1 1.27%
5 image of flag of Russian Federation Russian Federation 1 1.27%
6 image of flag of Kenya Kenya 1 1.27%

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