Chitosan and chitin oligomers increase phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities in soybean leaves
Phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) and tyrosine ammonia-lyase (TAL, 4.3.1.), the key enzymes of the phenylpropanoid pathway, are inducible in response to biotic (such as chitin from fungal cell walls) and abiotic cues. Application of chitin and chitosan to soybean leaf tissues caused incr...
| Veröffentlicht in: | Journal of plant physiology. - 1979. - 160(2003), 8 vom: 10. Aug., Seite 859-63 |
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| Weitere Verfasser: | , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2003
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| Zugriff auf das übergeordnete Werk: | Journal of plant physiology |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Oligosaccharides Plant Proteins Chitin 1398-61-4 Chitosan 9012-76-4 Ammonia-Lyases EC 4.3.1.- mehr... |
| Zusammenfassung: | Phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) and tyrosine ammonia-lyase (TAL, 4.3.1.), the key enzymes of the phenylpropanoid pathway, are inducible in response to biotic (such as chitin from fungal cell walls) and abiotic cues. Application of chitin and chitosan to soybean leaf tissues caused increased activity of PAL and TAL enzymes. The elevation of enzyme activity was dependent on the chain length of the oligomers and time after treatment. The hexamer of chitin and pentamer of chitosan produced the maximum activities at 36 h after treatment as compared to controls. Total phenolic content of soybean leaves increased following chitosan and chitin oligomer treatments, showing a positive correlation between enzyme activity and total phenolic content |
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| Beschreibung: | Date Completed 04.12.2003 Date Revised 13.12.2023 published: Print Citation Status MEDLINE |
| ISSN: | 1618-1328 |