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פותח על ידי קלירמאש פתרונות בע"מ -
Induced production of antifungal naphthoquinones in the pitchers of the carnivorous plant Nepenthes khasiana
Year:
2010
Source of publication :
Journal of Experimental Botany
Authors :
סיונוב, אדוארד
;
.
Volume :
61
Co-Authors:
Eilenberg, H., Department of Plant Sciences, George S Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Pnini-Cohen, S., Department of Plant Sciences, George S Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Rahamim, Y., School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Sionov, E., Department of Human Microbiology, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv 69978, Israel
Segal, E., Department of Human Microbiology, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv 69978, Israel
Carmeli, S., School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Zilberstein, A., Department of Plant Sciences, George S Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Facilitators :
From page:
911
To page:
922
(
Total pages:
12
)
Abstract:
Nepenthes spp. are carnivorous plants that have developed insect capturing traps, evolved by specific modification of the leaf tips, and are able to utilize insect degradation products as nutritional precursors. A chitin-induced antifungal ability, based on the production and secretion to the trap liquid of droserone and 5-O-methyldroserone, is described here. Such specific secretion uniquely occurred when chitin injection was used as the eliciting agent and probably reflects a certain kind of defence mechanism that has been evolved for protecting the carnivory-based provision of nutritional precursors. The pitcher liquid containing droserone and 5-O-methyldroserone at 3:1 or 4:1 molar ratio, as well as the purified naphthoquinones, exerted an antifungal effect on a wide range of plant and human fungal pathogens. When tested against Candida and Aspergillus spp., the concentrations required for achieving inhibitory and fungicidal effects were significantly lower than those causing cytotoxicity in cells of the human embryonic kidney cell line, 293T. These naturally secreted 1,4-naphthoquinone derivatives, that are assumed to act via semiquinone enhancement of free radical production, may offer a new lead to develop alternative antifungal drugs with reduced selectable pressure for potentially evolved resistance.
Note:
Related Files :
antifungal
Aspergillus
drug effect
fungi
germination
Histology
metabolism
microbiological examination
Microbiology
Plant pathogen
עוד תגיות
תוכן קשור
More details
DOI :
10.1093/jxb/erp359
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25527
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:15
Scientific Publication
Induced production of antifungal naphthoquinones in the pitchers of the carnivorous plant Nepenthes khasiana
61
Eilenberg, H., Department of Plant Sciences, George S Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Pnini-Cohen, S., Department of Plant Sciences, George S Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Rahamim, Y., School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Sionov, E., Department of Human Microbiology, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv 69978, Israel
Segal, E., Department of Human Microbiology, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv 69978, Israel
Carmeli, S., School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Zilberstein, A., Department of Plant Sciences, George S Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
Induced production of antifungal naphthoquinones in the pitchers of the carnivorous plant Nepenthes khasiana
Nepenthes spp. are carnivorous plants that have developed insect capturing traps, evolved by specific modification of the leaf tips, and are able to utilize insect degradation products as nutritional precursors. A chitin-induced antifungal ability, based on the production and secretion to the trap liquid of droserone and 5-O-methyldroserone, is described here. Such specific secretion uniquely occurred when chitin injection was used as the eliciting agent and probably reflects a certain kind of defence mechanism that has been evolved for protecting the carnivory-based provision of nutritional precursors. The pitcher liquid containing droserone and 5-O-methyldroserone at 3:1 or 4:1 molar ratio, as well as the purified naphthoquinones, exerted an antifungal effect on a wide range of plant and human fungal pathogens. When tested against Candida and Aspergillus spp., the concentrations required for achieving inhibitory and fungicidal effects were significantly lower than those causing cytotoxicity in cells of the human embryonic kidney cell line, 293T. These naturally secreted 1,4-naphthoquinone derivatives, that are assumed to act via semiquinone enhancement of free radical production, may offer a new lead to develop alternative antifungal drugs with reduced selectable pressure for potentially evolved resistance.
Scientific Publication
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