Metagenomic insights into the mechanism for the rapid enrichment and high stability of Candidatus Brocadia facilitated by Fe(Ⅲ)

厌氧氨氧化菌 细菌 微生物代谢 胞外聚合物 代谢途径 新陈代谢 反硝化 环境化学 化学 生物 氮气 反硝化细菌 生物化学 有机化学 生物膜 遗传学
作者
Xiao Hu,Hongyu Wang,Bin Ji,Bin Wang,Wenbin Guo,Rongfan Chen,Can Jiang,Yanfang Chen,Dao Zhou,Qian Zhang
出处
期刊:Water Research [Elsevier]
卷期号:252: 121224-121224 被引量:14
标识
DOI:10.1016/j.watres.2024.121224
摘要

The rapid enrichment of anammox bacteria and its fragile resistance to adverse environment are the critical problems facing of anammox processes. As an abundant component in anammox bacteria, iron has been proved to promote the activity and growth of anammox bacteria in the mature anammox systems, but the functional and metabolic profiles in Fe(III) enhanced emerging anammox systems have not been evaluated. Results indicated that the relative abundance of functional genes involved in oxidative phosphorylation, nitrogen metabolism, cofactors synthesis, and extracellular polymers synthesis pathways was significantly promoted in the system added with 5 mg/L Fe(III) (R5). These enhanced pathways were crucial to energy generation, nitrogen removal, cell activity and proliferation, and microbial self-defense, thereby accelerating the enrichment of anammox bacteria Ca. Brocadia and facilitating their resistance to adverse environments. Microbial community analysis showed that the proportion of Ca. Brocadia in R5 also increased to 64.42%. Hence, R5 could adapt rapidly to the increased nitrogen loading rate and increase the nitrogen removal rate by 108% compared to the system without Fe(III) addition. However, the addition of 10 and 20 mg/L Fe(III) showed inhibitory effects on the growth and activity of anammox bacteria, which exhibited the lower relative abundance of Ca. Brocadia and unstable or even collapsed nitrogen removal performance. This study not only clarified the concentration range of Fe(III) that promoted and inhibited the enrichment of anammox bacteria, but also deepened our understanding of the functional and metabolic mechanisms underlying enhanced enrichment of anammox bacteria by Fe(III), providing a potential strategy to hasten the start-up of anammox from conventional activated sludge.
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
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
科研通AI5应助悄悄采纳,获得10
刚刚
dryyu发布了新的文献求助10
刚刚
1秒前
高高凡霜发布了新的文献求助10
1秒前
恬淡虚无完成签到,获得积分10
3秒前
芋曦完成签到,获得积分10
3秒前
杏仁儿完成签到,获得积分10
4秒前
柒柒完成签到,获得积分10
5秒前
5秒前
5秒前
caixia完成签到,获得积分10
5秒前
浅兮完成签到,获得积分20
7秒前
杏仁儿发布了新的文献求助10
7秒前
8秒前
烨枫晨曦完成签到,获得积分10
8秒前
unique发布了新的文献求助10
9秒前
争取不秃顶的医学僧完成签到,获得积分10
9秒前
9秒前
科研通AI5应助科研通管家采纳,获得10
10秒前
10秒前
lxd应助科研通管家采纳,获得20
10秒前
科研通AI5应助科研通管家采纳,获得10
10秒前
NexusExplorer应助科研通管家采纳,获得10
10秒前
大个应助科研通管家采纳,获得10
10秒前
李健应助科研通管家采纳,获得10
10秒前
小二郎应助科研通管家采纳,获得10
10秒前
深情安青应助科研通管家采纳,获得10
10秒前
xs应助科研通管家采纳,获得10
10秒前
彭于晏应助科研通管家采纳,获得10
10秒前
FashionBoy应助科研通管家采纳,获得10
10秒前
浅兮发布了新的文献求助10
10秒前
科研通AI5应助科研通管家采纳,获得10
10秒前
领导范儿应助科研通管家采纳,获得10
10秒前
Ava应助嘤嘤怪采纳,获得10
10秒前
思源应助科研通管家采纳,获得10
10秒前
彭于晏应助科研通管家采纳,获得10
10秒前
10秒前
CodeCraft应助科研通管家采纳,获得10
10秒前
11秒前
11秒前
高分求助中
Continuum Thermodynamics and Material Modelling 3000
Production Logging: Theoretical and Interpretive Elements 2700
Les Mantodea de Guyane Insecta, Polyneoptera 1000
Structural Load Modelling and Combination for Performance and Safety Evaluation 1000
Conference Record, IAS Annual Meeting 1977 720
電気学会論文誌D(産業応用部門誌), 141 巻, 11 号 510
有源雷达散射截面减缩——理论与应用 赫玛·辛格,拉凯什·莫汉·杰哈 500
热门求助领域 (近24小时)
化学 材料科学 生物 医学 工程类 有机化学 生物化学 物理 纳米技术 计算机科学 内科学 化学工程 复合材料 基因 遗传学 物理化学 催化作用 量子力学 光电子学 冶金
热门帖子
关注 科研通微信公众号,转发送积分 3569308
求助须知:如何正确求助?哪些是违规求助? 3140626
关于积分的说明 9438650
捐赠科研通 2841729
什么是DOI,文献DOI怎么找? 1561819
邀请新用户注册赠送积分活动 730660
科研通“疑难数据库(出版商)”最低求助积分说明 718179