The Secondary Outbreak Risk and Mechanisms of Microcystis aeruginosa after H2O2 Treatment

铜绿微囊藻 水杨酸 爆发 化学 微生物学 嗜麦芽窄食单胞菌 过氧化氢 蓝藻 生物化学 生物 药理学 铜绿假单胞菌 细菌 病毒学 遗传学
作者
Chen Luo,Chenlan Chen,Xuanxuan Xian,Wei-Feng Cai,Xin Yu,Chengsong Ye
出处
期刊:Journal of Hazardous Materials [Elsevier]
卷期号:470: 134196-134196 被引量:3
标识
DOI:10.1016/j.jhazmat.2024.134196
摘要

The secondary outbreak of cyanobacteria after algicide treatment has been a serious problem to water ecosystems. Hydrogen peroxide (H2O2) is an algaecide widely used in practice, but similar re-bloom problems are inevitably encountered. Our work found that Microcystis aeruginosa (M. aeruginosa) temporarily hibernates after H2O2 treatment, but there is still a risk of secondary outbreaks. Interestingly, the dormant period was as long as 20 and 28 days in 5 mg L-1 and 20 mg L-1 H2O2 treatment groups, respectively, but the photosynthetic activity was both restored much earlier (within 14 days). Subsequently, a quantitative imaging flow cytometry-based method was constructed and confirmed that the re-bloom had undergone two stages including first recovery and then re-division. The expression of ftsZ and fabZ genes showed that M. aeruginosa had active transcription processes related to cell division protein and fatty acid synthesis during the dormancy stat. Furthermore, metabolomics suggested that the recovery of M. aeruginosa was mainly by activating folate and salicylic acid synthesis pathways, which promoted environmental stress resistance, DNA synthesis, and cell membrane repair. This study reported the comprehensive mechanisms of secondary outbreak of M. aeruginosa after H2O2 treatment. The findings suggest that optimizing the dosage and frequency of H2O2, as well as exploring the potential use of salicylic acid and folic acid inhibitors, could be promising directions for future algal control strategies. The secondary outbreak of cyanobacteria after algicide treatment has been a serious problem in aquatic system. To better understand the mechanism, a laboratory simulation was conducted to observe the entire process of algae disappearing and re-emerging after H2O2 treatment. The results showed that M. aeruginosa cells experienced a process of dormancy - activity recovery - re-division when exposed to a dosage of 5-20 mg L-1. Metabolomics indicated that folate and salicylic acid synthesis were metabolic features of re-blooms. Therefore, it is crucial to consider moderately increasing the dosage of algaecide and implementing regular control measures to effectively manage this issue.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
天天快乐应助郝宝真采纳,获得10
1秒前
benj完成签到,获得积分10
1秒前
2秒前
yud完成签到 ,获得积分10
3秒前
陈曦发布了新的文献求助10
5秒前
xiao发布了新的文献求助30
6秒前
莫鱼完成签到,获得积分10
8秒前
lsq108发布了新的文献求助10
8秒前
天天破大防完成签到,获得积分10
12秒前
12秒前
12秒前
小二郎应助xiao采纳,获得10
15秒前
屈狒狒发布了新的文献求助10
16秒前
打打应助小凉采纳,获得10
17秒前
苏苏完成签到,获得积分10
17秒前
cruise完成签到,获得积分10
19秒前
xiao完成签到,获得积分10
22秒前
Diaory2023完成签到 ,获得积分10
23秒前
思源应助ZD采纳,获得10
25秒前
26秒前
26秒前
慕青应助LX采纳,获得10
27秒前
小蘑菇应助梨花带雨采纳,获得10
28秒前
笑点低的牛二完成签到 ,获得积分20
29秒前
30秒前
水穷云起完成签到,获得积分10
30秒前
单纯夏旋关注了科研通微信公众号
31秒前
momo123发布了新的文献求助10
33秒前
陈曦发布了新的文献求助10
36秒前
FashionBoy应助nadeem采纳,获得10
39秒前
韩丙宇完成签到,获得积分20
40秒前
糖糖爱干饭完成签到 ,获得积分10
40秒前
爆米花应助兄弟小文0810采纳,获得10
41秒前
温婉的紫霜关注了科研通微信公众号
45秒前
小破橙完成签到 ,获得积分10
45秒前
46秒前
NAOKI应助balabala采纳,获得10
48秒前
许大脚完成签到 ,获得积分10
49秒前
LDDD完成签到,获得积分10
49秒前
50秒前
高分求助中
Evolution 10000
ISSN 2159-8274 EISSN 2159-8290 1000
Becoming: An Introduction to Jung's Concept of Individuation 600
Ore genesis in the Zambian Copperbelt with particular reference to the northern sector of the Chambishi basin 500
A new species of Coccus (Homoptera: Coccoidea) from Malawi 500
A new species of Velataspis (Hemiptera Coccoidea Diaspididae) from tea in Assam 500
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3162968
求助须知:如何正确求助?哪些是违规求助? 2813960
关于积分的说明 7902525
捐赠科研通 2473582
什么是DOI,文献DOI怎么找? 1316940
科研通“疑难数据库(出版商)”最低求助积分说明 631546
版权声明 602187