RRC ID |
56452
|
著者 |
Yu Y, Zeng Y, Li J, Yang C, Zhang X, Luo F, Dai X.
|
タイトル |
An algicidal Streptomyces amritsarensis strain against Microcystis aeruginosa strongly inhibits microcystin synthesis simultaneously.
|
ジャーナル |
Sci Total Environ
|
Abstract |
Microcystis aeruginosa and hepatotoxic microcystins produced by it have posed a severe threat to aquatic ecological security and human health. In this study a Streptomyces amritsarensis HG-16, showing high algicidal activity against M. aeruginosa and strong inhibitory effect on microcystin synthesis, was obtained by screening some anti-Fusarium sp. microbial strains isolated before in our laboratory. HG-16 bound cyanobacterial cells by mycelia to form flocs and killed M. aeruginosa by secreting active substances, which were proteinase K resistant and stable in the temperature range of 35-75 °C and pH range of 3-11. HG-16 removed M. aeruginosa of 105 and 106 cell mL-1 cell densities in similar rate and was active against all the tested harmful unicellular and filamentous cyanobacteria. Results of differential gene expression analysis indicated that HG-16 affected the photosynthesis system and microcystin synthesis of M. aeruginosa. Accordingly, the algicidal activity of HG-16 was light-dependent, and microcystin synthesis of M. aeruginosa decreased by 91.2% with HG-16 treatment. Thus, it is promising to utilize HG-16 to mitigate harmful cyanobacterial blooms, inhibit microcystin synthesis and control plant disease caused by Fusarium.spp. through irrigating farmland with eutrophic water applied HG-16.
|
巻・号 |
650(Pt 1)
|
ページ |
34-43
|
公開日 |
2019-2-10
|
DOI |
10.1016/j.scitotenv.2018.08.433
|
PII |
S0048-9697(18)33408-9
|
PMID |
30195130
|
MeSH |
Herbicides / pharmacology*
Microcystins / biosynthesis*
Microcystis / drug effects*
Streptomyces / chemistry*
|
IF |
5.589
|
引用数 |
8
|
リソース情報 |
藻類 |
|