Ấn phẩm:
IN VITRO ANTIOXIDANT, α-AMYLASE AND α-GLUCOSIDASE INHIBITORY ACTIVITIES OF ENDOPHYTIC BACTERIA FROM THE ROOTS OF THE MANGROVE PLANT Rhizophora stylosa Griffith
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Mangrove is one of the highly productive ecosystems and contains diverse plants and microbial communities. Bacterial endophytes from mangroves are considered as a prolific source of biological molecules with important functions in the protection of mangrove plants against herbivores, insects as well as pathogens. The present study aimed to isolate endophytic bacteria from the roots of mangrove plant Rhizophora stylosa and to screen antioxidant, α-amylase and α- glucosidase inhibitory activities of ethyl acetate extracts from the isolated endophytic bacteria. A total of 73 endophytic bacterial strains from R. stylosa roots were isolated, of which ethyl acetate extracts of 10 isolated endophytic strains at a concentration of 500 μg/mL showed antioxidant activity with ATBS and DPPH radical scavenging values ranging from 31.3 ± 2.5% to 62.2 ± 6.3% and 21.2 ± 3.2% to 56.7 ± 4.5%, respectively. Additionally, the ethyl acetate extracts of 11 isolated endophytic bacteria at a concentration of 500 μg/mL exhibited α-amylase and α- glucosidase inhibitory activities with values ranging from 31.4 ± 3.1% to 59.7 ± 6.4% and 17.3 ± 3.1% to 54.5 ± 6.1%, respectively. The identification of the five high antioxidant, α-amylase and α-glucosidase inhibitory endophytes by 16S rRNA sequences revealed that the bacterial endophytes belonged to three genera, including Bacillus, Streptomyces, and Pseudovibrio with the similarity of more than 99%. The obtained results suggest that the root endophytic bacteria of R. stylosa are a source of antioxidant and antidiabetic agents. To the best of our knowledge, this is the first report of antioxidant, α-amylase and α-glucosidase activities of the endophytic bacteria from the roots of Vietnam mangrove plants in general and R. stylosa in particular.
Mô tả
Academia of science and technology, Volume 43, Number 3.
Tác giả
Ton, That Huu Dat
Phung, Thi Thuy Oanh
Người hướng dẫn
Nơi xuất bản
Nhà xuất bản
Vietnam Academy of science and technology
Năm xuất bản
2021-09
ISSN tạp chí
Nhan đề tập
Từ khóa chủ đề
Endophytic bacteria , Rhizophora stylosa
URI
Tài liệu tham khảo
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TonThatHuuDat_PhungThiThuyOanh.pdf
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