Bacterial surface roughness regulates nanoparticle scavenging in seawater
Bacterial surface roughness regulates nanoparticle scavenging in seawater
复制标题
细菌表面粗糙度调节海水中纳米颗粒的清除
DOI:
10.1002/lno.12309
复制
发表时间:
2023
影响因子:
4.5
通讯作者:
Azam Farooq
中科院分区:
文献类型:
--
作者:
Yamada Yosuke;Patel Nirav;Fukuda Hideki;Nagata Toshi;Mitarai Satoshi;Azam Farooq
Organic nanoparticles are abundant in marine environments and constitute important nutrient sources for bacteria. Bacteria have evolved cell surfaces over 3.8 billion years to efficiently utilize food particles, and they contribute to material cycling in the world's oceans. Nanoscale roughness of bacterial cell surfaces reflects outer membrane structures and extracellular polymers that potentially affect cell–particle interactions. However, the variability of surface roughness of marine bacteria has been little studied and its involvement in nanoparticle attachment to bacteria is essentially unknown. Here, for the first time, we show the surface roughness of marine bacteria, evaluated as the root mean square deviation of height (Rq), determined by atomic force microscopy of over 1000 cells of coastal and offshore bacteria in the upper ocean. The Rq varied about 10‐fold among cells (range: 1.0–13.7 nm) and decreased with increasing seawater temperature, implying that bacteria–nanoparticle interactions differ among oceanographic areas. Microcosm experiments using two Gammaproteobacteria (isolated from coastal waters) and modeled with nanoparticle (polystyrene beads and viruses) show that the Rq is a strong predictor of nanoparticle attachment to marine bacteria, that is, bacterial nanoparticle scavenging increases with Rq. This relationship can be explained by steeper peaks/valleys and larger surface area of rougher cells. Measurement of nanoscale surface topography of marine bacteria provides novel insights into bacterial strategies for resource utilization and their contribution to marine biogeochemical cycles.
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影响因子:
1.4
作者:
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通讯作者:
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影响因子:
4.4
作者:
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2.7
作者:
Granhag, LM;Finlay, JA;Callow, ME
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Callow, ME
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
T. Nagata;D. Kirchman
通讯作者:
D. Kirchman
DOI:
10.1096/fasebj.28.1_supplement.970.1
发表时间:
2014
期刊:
The FASEB Journal
影响因子:
--
作者:
Lauren A. Genova;James E. Melnyk;Vishnu Mohanan;C. Grimes
通讯作者:
C. Grimes