Studies on antimicrobial activities of endophytic bacteria isolated from Neem tree (Azadirachta indica)

The objective of this study is to isolate endophytic bacteria from Azadirachta indica (neem). We isolated 7 strains of endogenous bacteria from the neem tree. By investing the anti-fungal and antibacterial activities of endophytic bacteria in A. indica by well diffusion agar method, we noticed there...

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Published inHo Chi Minh City Open University Journal of Science - Engineering and Technology (Online) Vol. 10; no. 1; pp. 72 - 80
Main Authors Linh, Duong Nhat, Thien, Bui Van, Ni, Tran Thi Ai, Duy, Nguyen Thanh, Minh, Nguyen Van, Dong, Tran Cat
Format Journal Article
LanguageEnglish
Published HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE 01.03.2020
Subjects
azadirachta indica a. juss
bacillus subtilis
candida albicans
endophytic bacteria
trichophyton rubrum
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Summary:The objective of this study is to isolate endophytic bacteria from Azadirachta indica (neem). We isolated 7 strains of endogenous bacteria from the neem tree. By investing the anti-fungal and antibacterial activities of endophytic bacteria in A. indica by well diffusion agar method, we noticed there was KT2 strain which resisted to Salmonella typhi and Staphylococcus aureus (10.67 ± 0.33 mm and 9.67 ± 0.33 mm), KT3 strain showed the inhibitory activity to three human pathogenic fungal (Candida albicans, Trichophyton mentagrophytes, Trichophyton rubrum), two strains (KT1, KT2) which resisted to C. albicans and T. rubrum. According to Cowan and Steel's manual, the result of biochemical identification showed that the KT2 strain was the Bacillus subtilis species.
ISSN:2734-9330
2734-9608
DOI:10.46223/HCMCOUJS.tech.en.10.1.362.2020