Beta-1,3-glucanase inhibitors in Brazilian brown seaweed

Beta-1,3-glucanase inhibitors in Brazilian brown seaweed

Abstract Beta-1,3-glucanases are enzymes that hydrolyze beta-1,3-glucans, and they are essential for the metabolism of seaweed, plants and fungi. These enzymes also participate in the digestion of herbivore and fungivore animals. Because of the importance of these enzymes in insects, beta-1,3-glucan...

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Published in:Anais da Academia Brasileira de Ciências Vol. 93; no. 3; p. e20191402
Main Authors: FERREIRA, TAINÁ N., BARUFI, JOSÉ B., HORTA, PAULO A., CASTRO, DANIELE P., GENTA, FERNANDO A.
Format: Journal Article
Language:English
Published: Academia Brasileira de Ciências 01-01-2021
Subjects:
3-glucanase
inhibitor
MULTIDISCIPLINARY SCIENCES
Padina gymnospora
Seaweed
Trichoderma
β-1
Seaweed
Trichoderma
3-glucanase
β-1
inhibitor
Padina gymnospora
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Summary:Abstract Beta-1,3-glucanases are enzymes that hydrolyze beta-1,3-glucans, and they are essential for the metabolism of seaweed, plants and fungi. These enzymes also participate in the digestion of herbivore and fungivore animals. Because of the importance of these enzymes in insects, beta-1,3-glucanase inhibitors may be used for the development of new control strategies against agricultural pests and disease vectors. Beta-1,3-glucanase inhibitors have been described in the brown seaweed Laminaria cichorioides, but were never recorded in Brazilian seaweed species. We evaluated the presence of beta-1,3-glucanase inhibitors in samples of Padina gymnospora, Dictyota sp., Colpomenia sinuosa, and Lobophora sp., collected in Arraial d’Ajuda (Bahia). Ethanolic or buffer extracts were used in inhibition tests against the beta-1,3-glucanase of Trichoderma sp. Extracts in buffer showed no inhibition, but ethanolic extracts from all species showed different extents of inhibition. Samples from Dictyota sp. and P. gymnospora showed inhibitions above 75% (absolute ethanol) or 50% (ethanol 50%). In summary, extraction with absolute ethanol resulted in better inhibitions, and P. gymnospora showed the higher inhibitions. Brazilian seaweed may be good sources of beta-1,3-glucanase inhibitors for biochemical and physiological studies of these enzymes. Besides that, these molecules show potential for the development of new biotechnological tools for insect control.
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ISSN:0001-3765
1678-2690
1678-2690
DOI:10.1590/0001-3765202120191402