A new ecology-on-a-chip microfluidic platform to study interactions of microbes with a rising oil droplet.

Abstract:

:Advances in microfluidics technology has enabled many discoveries on microbial mechanisms and phenotypes owing to its exquisite controls over biological and chemical environments. However, emulating accurate ecologically relevant flow environments (e.g. microbes around a rising oil droplet) in microfluidics remains challenging. Here, we present a microfluidic platform, i.e. ecology-on-a-chip (eChip), that simulates environmental conditions around an oil droplet rising through ocean water as commonly occurred during a deep-sea oil spill or a natural seep, and enables detailed observations of microbe-oil interactions at scales relevant to marine ecology (i.e. spatial scales of individual bacterium in a dense suspension and temporal scales from milliseconds to weeks or months). Owing to the unique capabilities, we present unprecedented observations of polymeric microbial aggregates formed on rising oil droplets and their associated hydrodynamic impacts including flow fields and momentum budgets. Using the platform with Pseudomonas, Marinobacter, and Alcarnivorax, we have shown that polymeric aggregates formed by them present significant differences in morphology, growth rates, and hydrodynamic impacts. This platform enables us to investigate unexplored array of microbial interactions with oil drops.

journal_name

Sci Rep

journal_title

Scientific reports

authors

White AR,Jalali M,Sheng J

doi

10.1038/s41598-019-50153-9

subject

Has Abstract

pub_date

2019-09-24 00:00:00

pages

13737

issue

1

issn

2045-2322

pii

10.1038/s41598-019-50153-9

journal_volume

9

pub_type

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