Publications by authors named "Buce Hetharua"

A Gram-stain-negative, strictly aerobic and oval-shaped bacterial strain with a flagellum, designated GS-10, was isolated from mangrove wetland sediment. GS-10 grew at 20-40 °C (optimum, 37 °C), in the pH range of 5.0-11.

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Anaerobic ammonium oxidation (anammox), a microbial process in which NH is oxidized to N gas, is considered a significant nitrogen cycle process, but its significance in mangrove wetland sediments, particularly its depth- and genus-specific distribution and activity have remained uncertain. Here we report the vertical distribution, abundance, activity and role of anammox bacteria in mangrove sediments of Zhangjiang Estuary, China. We used stable isotope-tracer techniques, 16S rRNA and anammox bacterial functional gene (Hydrazine synthase B: hzsB) clone libraries and quantitative polymerase chain reaction (qPCR) assays, along with an assessment of nutrient profiles of sediment core samples.

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A Gram-stain-negative strain, designated FM6, was isolated from surface seawater sampled at the port in Xiamen, PR China. Strain FM6 showed less than 96.3 % 16S rRNA gene sequence similarity to the type strains of species with validly published names.

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A Gram-stain-negative Rhodobacterales strain, designated as FSX-11, was isolated from surface seawater of Xiamen port in China. Strain FSX-11 showed less than 96.5 % 16S rRNA gene sequence similarity to the type strains of species with validly published names.

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Microorganisms play important roles in mangrove ecosystems. However, we know little about the ecological implications of mangrove microbiomes for high productivity and the efficient circulation of elements in mangrove ecosystems. Here, we focused on mangrove sediments located at the Yunxiao National Mangrove Reserve in southeast China, uncovering the mangrove microbiome using the 16S rRNA gene and shotgun metagenome sequencing approaches.

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Nitrite-dependent anaerobic methane oxidation (n-damo), which is mediated by "Candidatus Methylomirabilis oxyfera-like" bacteria, is unique in linking the carbon and nitrogen cycles. However, the niche and activity of n-damo bacteria in the mangrove ecosystem have not been confirmed. Here, we report the occurrence of the n-damo process in the mangrove wetland of the Zhangjiang Estuary, China.

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Objective: The present study aims to analyze the chemotaxis genes and proteins of several PAH-degrading Novosphingobium strains, and the chemotaxis of these strains toward aromatic compounds and intermediates.

Methods: Based on genome comparative analysis, we identified the chemotaxis genes organization and proteins distribution. We used drop and swarm plate assays to detect the chemotaxis of these strains toward aromatic compounds and intermediates of TCA cycle.

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