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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Identification and biological activity of antifungal saponins from shallot (Allium cepa L. Aggregatum Group)
Journal of Agricultural and Food Chemistry, Volume 61, No. 31, Year 2013
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Description
The n-butanol extract of shallot basal plates and roots showed antifungal activity against plant pathogenic fungi. The purified compounds from the extract were examined for antifungal activity to determine the predominant antifungal compounds in the extract. Two major antifungal compounds purified were determined to be alliospiroside A (ALA) and alliospiroside B. ALA had prominent antifungal activity against a wide range of fungi. The products of acid hydrolysis of ALA showed a reduced antifungal activity, suggesting that the compound's sugar chain is essential for its antifungal activity. Fungal cells treated with ALA showed rapid production of reactive oxygen species. The fungicidal action of ALA was partially inhibited by a superoxide scavenger, Tiron, suggesting that superoxide anion generation in the fungal cells may be related to the compound's action. Inoculation experiments showed that ALA protected strawberry plants against Colletotrichum gloeosporioides, indicating that ALA has the potential to control anthracnose of the plant. © 2013 American Chemical Society.
Authors & Co-Authors
Teshima, Yoshiki
Japan, Yamaguchi
Yamaguchi University
Japan, Kusatsu
Cent Research Inst
Ikeda, Tsuyoshi
Japan, Kumamoto
Sojo University
Imada, Kiyoshi
Japan, Yamaguchi
Yamaguchi University
Sasaki, Kazunori
Japan, Yamaguchi
Yamaguchi University
El-Sayed, Magdi A.
Egypt, Aswan
Faculty of Science
Shigyo, Masayoshi
Japan, Yamaguchi
Yamaguchi University
Tanaka, Shuuhei
Japan, Yamaguchi
Yamaguchi University
Ito, Shinichi
Japan, Yamaguchi
Yamaguchi University
Statistics
Citations: 50
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1021/jf401720q
ISSN:
00218561
e-ISSN:
15205118