Abscisic acid and jasmonic acid affect proteinase inhibitor activities in barley leaves
Proteinase inhibitor (PI) accumulation has been described as a plant defense response against insects and pathogens. The induction of PIs is known to be regulated by endogenous chemical factors including phytohormones. We studied the induction of barley chymotrypsin and trypsin inhibitory activities...
| Veröffentlicht in: | Journal of plant physiology. - 1979. - 161(2004), 4 vom: 14. Apr., Seite 389-96 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2004
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| Zugriff auf das übergeordnete Werk: | Journal of plant physiology |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Cyclopentanes Oxylipins Plant Growth Regulators Protease Inhibitors jasmonic acid 6RI5N05OWW Abscisic Acid 72S9A8J5GW mehr... |
| Zusammenfassung: | Proteinase inhibitor (PI) accumulation has been described as a plant defense response against insects and pathogens. The induction of PIs is known to be regulated by endogenous chemical factors including phytohormones. We studied the induction of barley chymotrypsin and trypsin inhibitory activities by aphid infestation, mechanical wounding, abscisic acid (ABA) and jasmonic acid (JA). Wounding experiments led to a minimal accumulation of PI activity (16% over controls) compared to that found in barley seedlings infested by aphids, where chymotrypsin inhibitor activity showed a two-fold increment. No systemic induction could be detected in healthy leaves of an infested or mechanically injured plant. Exogenous ABA applied on barley leaves increased the chymotrypsin inhibitory activity, while JA only increased trypsin inhibitory activity locally and systemically when applied exogenously. Our data suggest that two different mechanisms may be regulating the induction of these two types of inhibitors |
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| Beschreibung: | Date Completed 29.06.2004 Date Revised 30.09.2020 published: Print Citation Status MEDLINE |
| ISSN: | 1618-1328 |