Abstract
The Pseudomonas sp. PAMC 26793 was isolated because of its high ability to degrade humic acids from a subarctic grassland in Alaska. We sequenced the PAMC 26793 genome to discover the genes for degradation of natural humic substances and to provide further information for the degradation process of soil bacteria in a low-temperature environment.
Highlights
Despite humic substances (HS) having been studied in many research fields, knowledge of the role played by microorganisms in forming and decomposing these substances is still insufficient
Current evidence suggests that soil bacteria play a critical role in the HS degradation process due to their prevalence, diversity, and catabolic versatility [3, 4]
Little has been known about the HS-degrading bacteria in cold environments, which led us to initiate the present study
Summary
Soil humic substances (HS), composed mainly of humic acids, are widely distributed in cold natural environments, such as alpine areas, the Arctic, and the Antarctic, and are known as an important fraction of soil organic carbon [1, 2, 3]. HS, characterized by carboxylic acid and phenolic hydroxyl groups, are formed via the decomposition of plant materials, including lignocellulose, and the condensation of smaller molecules through biological and physical processes [4]. Despite HS having been studied in many research fields, knowledge of the role played by microorganisms in forming and decomposing these substances is still insufficient.
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