Journal
AGRICULTURE-BASEL
Volume 12, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/agriculture12101553
Keywords
PBAT biodegradable mulch film; seed germination; extracts; metabolites; metabolism pathway
Categories
Funding
- Science and Technology Program of Science and Technology Department of Guizhou Province [20182335]
- Technology Program of Science and Technology Department of Guizhou Province [20191212]
- Talent Project of Science and Technology Department of Guizhou Province [20206020]
- Program of Guizhou Provincial Tobacco Company [201933]
- Changsha Municipal Natural Science Foundation [kq2202233]
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This study evaluated the effects of organic compounds extracted from PBAT-BMF on tobacco seed germination and seedling metabolism. The results showed that these compounds had a stress effect on germination and growth of tobacco seeds and significantly changed the metabolic pathway.
Poly (butylene adipate-co-terephthalate) biodegradable mulch film (PBAT-BMF) is gradually applied in agricultural production, but its potential ecological risks have not been studied so far. In this paper, methyl tert-butyl ether (MTBE) was used to extract organic compounds from PBAT-BMF to evaluate its effects on tobacco seed germination and seedling metabolism. The results showed that six organic compounds were found in the extract of PBAT-BMF, among which the content of diisopropylphenyl isocyanate was the highest at 557.27 mu g g(-1). A germination test showed that the extract scan inhibited the germination of tobacco seeds. The germination time was 1 d later than the control (CK), and the germination percentage and germination energy were non-significantly decreased by 2.50% and 1.00%. In contrast, the extracts significantly affected the root length, and seedlings height (p < 0.01), decreased by 0.24 cm and 0.28 cm, respectively. A metabolic analysis revealed that the extracts have a certain stress effect on tobacco seedlings and showed an up-regulating effect on soluble sugar, critical organic acid, biogenic amine, and down-regulating alkaloid, which indicated that the carbon and nitrogen metabolism pathway of the tricarboxylic acid cycle and alkaloid synthesis were disturbed. These results indicated that organic compounds extracted from PBAT-BMF had stress effects on germination and the growth of tobacco seeds, which significantly changed the metabolism pathway. This study can provide a theoretical basis for the development and application of PBAT-BMF.
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