|
| Activity verification of a bacterium capable of facultative phenol degradation and biocontrol of Fusarium graminearum |
| Received:April 09, 2020 |
| View Full Text View/Add Comment Download reader |
| KeyWord:phenol degradation;biological control;soil-borne Fusarium disease;isolation;identification |
| Author Name | Affiliation | E-mail | | WANG Chen-jiao | Plateau Chinese Medicine Planting Soil Quality Field Observation and Research Station of Yunnan Province, Yunnan Normal University, Kunming 650500, China | | | CHEN Ying | Plateau Chinese Medicine Planting Soil Quality Field Observation and Research Station of Yunnan Province, Yunnan Normal University, Kunming 650500, China | | | LI Lei | Plateau Chinese Medicine Planting Soil Quality Field Observation and Research Station of Yunnan Province, Yunnan Normal University, Kunming 650500, China | | | GUO Jia-hang | Plateau Chinese Medicine Planting Soil Quality Field Observation and Research Station of Yunnan Province, Yunnan Normal University, Kunming 650500, China | | | TANG Guang-mei | Plateau Chinese Medicine Planting Soil Quality Field Observation and Research Station of Yunnan Province, Yunnan Normal University, Kunming 650500, China | | | GUAN Hui-lin | Plateau Chinese Medicine Planting Soil Quality Field Observation and Research Station of Yunnan Province, Yunnan Normal University, Kunming 650500, China | | | HUANG Jing-xin | Plateau Chinese Medicine Planting Soil Quality Field Observation and Research Station of Yunnan Province, Yunnan Normal University, Kunming 650500, China | huangjingxin17@163.com |
|
| Hits: 2442 |
| Download times: 2864 |
| Abstract: |
| To simultaneously solve the problems of soil phenol pollution and soil-borne Fusarium graminearum disease in agricultural plantations, bacteria with the ability to degrade phenol efficiently were isolated. "Multifunctional bacteria" that could inhibit Fusarium graminearum were screened, and their effects on degrading phenol pollution in soil and controlling F. graminearum were verified in a greenhouse experiment. In the study, three isolated bacteria showed phenol degrading functions as well as the ability to inhibit F. graminearum. One of them, PCB01, could degrade phenol by 99.57% in a 500 mg·L-1 solution within 70 h, and exhibited an inhibition rate of 79.38% for F. graminearum. This strain was identified as Rhodococcus zopfii sp. by 16s rRNA gene sequencing. The results of the greenhouse experiment showed that the PCB01 strain degraded phenol in soil significantly (by 84.20%)within 40 d. The PCB01 strain relieved the inhibition of F. graminearum on maize and reduced the effect of F. graminearum on plant height, chlorophyll content, and single biomass. The "multifunctional bacterium" isolated in our study is potentially useful for mitigating soil phenol pollution and F. graminearum disease in maize simultaneously, and thus, it may serve as a good solution for the current high incidence of soil phenol pollution and crop disease. |
|
|
|
