铜绿微囊藻
细菌
蓝藻
微生物学
生物
微囊藻
生物化学
转录组
光合作用
新陈代谢
氧化磷酸化
脂质过氧化
水华
脂质代谢
抗氧化剂
基因
基因表达
浮游植物
生态学
营养物
遗传学
作者
Yulei Zhang,D. Chen,Ning Zhang,Feng Liu,Xiaoxia Luo,Qianru Li,Changling Li,Xianghu Huang
标识
DOI:10.3390/ijerph18168615
摘要
Harmful algal blooms caused huge ecological damage and economic losses around the world. Controlling algal blooms by algicidal bacteria is expected to be an effective biological control method. The current study investigated the molecular mechanism of harmful cyanobacteria disrupted by algicidal bacteria. Microcystis aeruginosa was co-cultured with Brevibacillus laterosporus Bl-zj, and RNA-seq based transcriptomic analysis was performed compared to M. aeruginosa, which was cultivated separately. A total of 1706 differentially expressed genes were identified, which were mainly involved in carbohydrate metabolism, energy metabolism and amino acid metabolism. In the co-cultured group, the expression of genes mainly enriched in photosynthesis and oxidative phosphorylation were significantly inhibited. However, the expression of the genes related to fatty acid synthesis increased. In addition, the expression of the antioxidant enzymes, such as 2-Cys peroxiredoxin, was increased. These results suggested that B. laterosporus could block the electron transport by attacking the PSI system and complex I of M. aeruginosa, affecting the energy acquisition and causing oxidative damage. This further led to the lipid peroxidation of the microalgal cell membrane, resulting in algal death. The transcriptional analysis of algicidal bacteria in the interaction process can be combined to explain the algicidal mechanism in the future.
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