Legume seed vicilins (7S storage proteins) interfere with the development of the cowpea weevil (Callosobruchus maculatus (F))
✍ Scribed by Yunes, Andréa Neila A; de Andrade, Maria Tereza; Sales, Maurício P; Morais, Rosana A; Fernandes, Kátia Valevski S; Gomes, Valdirene M; Xavier-Filho, José
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 247 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0022-5142
No coin nor oath required. For personal study only.
✦ Synopsis
Vicilins (7S storage proteins) isolated from the seeds of the legumes V igna unguiculata (cowpea), V igna angularis (adzuki bean), Canavalia ensiformis (jack bean), Glycine max (soybean), Phaseolus vulgaris (common bean) and Phaseolus lunatus (lima bean) were shown to be immunologically related and to bind to a chitin matrix. The e †ect of the isolated vicilins on the development of the cowpea weevil Callosobruchus maculatus was examined. Vicilins from all nonhost seeds, including those of the C maculatus-resistant cowpea line IT81D-1045, strongly inhibited larval development of 1É07 ^0É32% to 2É22 ^0É64%). (ED 50 Vicilins from the C maculatus-susceptible cowpea CE-31 and adzuki bean seeds were the exception with of 6É25 ^0É75% and 5É40 ^1É54%, respectively. ED 50 These results correlate well with the host range of C maculatus and are possibly a reÑection of the low digestibility of vicilins by insect midgut proteinases in addition to the ability they show in binding to chitin-containing structures like the ones found in the bruchid midguts.
1998 SCI.