Ya-Jou Chen

Journal Article Canadian journal of microbiology · May 2024 Global warming-induced sea ice loss in the Canadian Northwest Passage (NWP) will result in more shipping traffic, increasing the risk of oil spills. Microorganisms inhabiting NWP beach sediments may degrade hydrocarbons, offering a potential bioremediation ... Full text Cite

Effects of marine diesel on microbial diversity and activity in high Arctic beach sediments.

Journal Article Marine pollution bulletin · September 2023 Global warming induced sea ice loss increases Arctic maritime traffic, enhancing the risk of ecosystem contamination from fuel spills and nutrient loading. The impact of marine diesel on bacterial metabolic activity and diversity, assessed by colorimetric ... Full text Cite

Molecular hydrogen in seawater supports growth of diverse marine bacteria.

Journal Article Nature microbiology · April 2023 Molecular hydrogen (H2) is an abundant and readily accessible energy source in marine systems, but it remains unknown whether marine microbial communities consume this gas. Here we use a suite of approaches to show that marine bacteria consume H ... Full text Cite

Active lithoautotrophic and methane-oxidizing microbial community in an anoxic, sub-zero, and hypersaline High Arctic spring.

Journal Article The ISME journal · July 2022 Lost Hammer Spring, located in the High Arctic of Nunavut, Canada, is one of the coldest and saltiest terrestrial springs discovered to date. It perennially discharges anoxic (<1 ppm dissolved oxygen), sub-zero (~-5 °C), and hypersaline (~24% salinity) bri ... Full text Cite

Hydrocarbon bioremediation on Arctic shorelines: Historic perspective and roadway to the future.

Journal Article Environmental pollution (Barking, Essex : 1987) · July 2022 Climate change has become one of the greatest concerns of the past few decades. In particular, global warming is a growing threat to the Canadian high Arctic and other polar regions. By the middle of this century, an increase in the annual mean temperature ... Full text Cite

Hydrodynamic disturbance controls microbial community assembly and biogeochemical processes in coastal sediments.

Journal Article The ISME journal · March 2022 The microbial community composition and biogeochemical dynamics of coastal permeable (sand) sediments differs from cohesive (mud) sediments. Tide- and wave-driven hydrodynamic disturbance causes spatiotemporal variations in oxygen levels, which select for ... Full text Cite

Hydrocarbon biodegradation potential of microbial communities from high Arctic beaches in Canada's Northwest Passage.

Journal Article Marine pollution bulletin · January 2022 Sea ice loss is opening shipping routes in Canada's Northwest Passage, increasing the risk of an oil spill. Harnessing the capabilities of endemic microorganisms to degrade oil may be an effective remediation strategy for contaminated shorelines; however, ... Full text Cite

Metabolic flexibility allows bacterial habitat generalists to become dominant in a frequently disturbed ecosystem.

Journal Article The ISME journal · October 2021 Ecological theory suggests that habitat disturbance differentially influences distributions of habitat generalist and specialist species. While well-established for macroorganisms, this theory has rarely been explored for microorganisms. Here we tested the ... Full text Cite

Two Chloroflexi classes independently evolved the ability to persist on atmospheric hydrogen and carbon monoxide.

Journal Article The ISME journal · July 2019 Most aerobic bacteria exist in dormant states within natural environments. In these states, they endure adverse environmental conditions such as nutrient starvation by decreasing metabolic expenditure and using alternative energy sources. In this study, we ... Full text Cite

Bacterial fermentation and respiration processes are uncoupled in anoxic permeable sediments.

Journal Article Nature microbiology · June 2019 Permeable (sandy) sediments cover half of the continental margin and are major regulators of oceanic carbon cycling. The microbial communities within these highly dynamic sediments frequently shift between oxic and anoxic states, and hence are less stratif ... Full text Cite

The effect of zerovalent iron on the microbial degradation of hexabromocyclododecane.

Journal Article Chemosphere · June 2018 Hexabromocyclododecane (HBCD), a commonly used brominated flame retardant (BFR), has been listed as a persistent organic pollutant (POP). In order to remediate HBCD in the environment, the influence of microscale zerovalent iron (MZVI) on the HBCD degradin ... Full text Cite

Effects of low-pH stress on shell traits of the dove snail, Anachis misera , inhabiting shallow-vent environments off Kueishan Islet, Taiwan

Journal Article Biogeosciences · May 5, 2015 Abstract. The effects of naturally acidified seawater on shell traits were quantified through the comparison of dove snails (Family: Columbellidae) Anachis misera from vent environments with Euplica sp. from non-vent sites in northeastern Taiwan. S ... Full text Cite

Biodegradation of bisphenol A with diverse microorganisms from river sediment.

Journal Article Journal of hazardous materials · April 2015 The wide distribution of bisphenol A (BPA) in the environment is problematic because of its endocrine-disrupting characteristics and toxicity. Developing cost-effective remediation methods for wide implementation is crucial. Therefore, this study investiga ... Full text Cite

A comparative study of the interaction of Bartonella henselae strains with human endothelial cells.

Journal Article Veterinary microbiology · April 2011 Bartonella henselae can cause a wide range of clinical outcomes and may lead to severe disease, especially in patients with acquired immunodeficiency syndrome. It is well-known that B. henselae-induced cell proliferation is mediated by anti-apoptotic activ ... Full text Cite