Open AccessScreening of endophytes from rubber trees (hevea brasiliensis) for biological control of Corticium salmonicolor
Author(s) -
Nguyễn Văn Minh,
Mai Huu Phuc,
Dương Nhật Linh,
Trần Thị Á Ni,
Trần Kiên Đức,
Nguyen Anh Nghia
Publication year - 2020
Publication title -
ho chi minh city open university journal of science - engineering and technology
Language(s) - English
Resource type - Journals
eISSN - 2734-9608
pISSN - 2734-9330
DOI - 10.46223/hcmcoujs.tech.en.8.2.345.2018
Subject(s) - hevea brasiliensis , biology , natural rubber , microbiology and biotechnology , chemistry , organic chemistry
28 leaves and living-tissue samples of rubber tree (Hevea brasiliensis) were collected from Ho Chi Minh City, Binh Phuoc province and Binh Duong province (Viet Nam). We isolated and screened endophytes that have potential application as agents for biocontrol of Corticium salmonicolor, the agent of Pink Disease in rubber trees. As a result, 21 strains of endophytic bacteria and 14 strains of endophytic fungi were isolated. Antagonistic activity of the endophytes towards C. salmonicolor was checked by using a dual culture. Testing results showed that: T9, T15 and T16 strains have inhibited C. salmonicolor. T9 and T16 strains showed result that 100% of inhibiting C. salmonicolor at the concentration of 1:1. In the test of ability to kill C. salmonicolor, T9 and T16 strains showed that they could kill C. salmonicolor
after 3 sprays of bacterial filtrate. T9 and T6 strains, which were identified by biochemical methods, have similar characteristics to Bacillus thuringiensis.