1. Protease inhibitors – anti-nutritional components of grasspea, or is there more to it?
- Author
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Ilić, Aleksandra, Ilić, Aleksandra, Gvozdenac, Sonja, Nagl, Nevena, Ilić, Aleksandra, Ilić, Aleksandra, Gvozdenac, Sonja, and Nagl, Nevena
- Abstract
Balkan Peninsula is considered dispersion route of grasspea into Europe, leaving rich diversity of grasspea in this geographic area. Grasspea was familiar in Serbian agriculture throughout the centuries; however, nowadays it is only grown on small acreages. In the last decade, there have been attempts of the grasspea reintroduction in Serbia and other Western Balkan countries. One of the factors that limit the use of grasspea is the presence of anti-nutritional factors, including protease inhibitors (PI) - trypsin and chymotrypsin. On the other hand, we started to explore the possible role of protease inhibitors in seed protection against bean weevil (Acanthoscelides obtectus), as the most devastating and limiting factor in legume production, including grasspea. Therefore, the main goals of this research are (1) to determine the content of chymotrypsin inhibitor (CI) activity in seeds of 12 grasspea accessions and (2) to examine the suitability of grasspea in relation to other two legumes (common bean and faba bean) as the feeding medium for the development and population growth of the bean weevil. CI activity ranged from 5.7 CUI/mg to 16.3 CUI/mg, with medium of 13.3 CUI/mg for the analyzed collection. Further, the lowest total number of bean weevils emerged from faba bean, while the population growth of the bean weevil was the highest on common bean, followed by grasspea. These are preliminary results of larger research, which will focus on a role of protease inhibitors in protection of legumes to bean weevil and possibility of PIs to be used in the production of bioinsecticide. The correlation between these two parameters will be done in ongoing research.
- Published
- 2024