Abstract
The abundance and diversity of archaeal assemblages were analyzed in soils collected from Gyorae Gotjawal forest, Jeju, Korea. Gotjawal soil refers to soil derived from a lava-formed forest, characterized by high organic matter content, fertility, and poor rocky soil. Using domain-specific primers, archaeal 16S rRNA gene sequences were PCR amplified for clone library construction, and a total of 185 archaeal clones were examined. The archaeal clones were affiliated with the phyla Thaumarchaeota (96.2%) and Euryarchaeota (3.8%). The most abundant thaumarchaeal group (90.3% of the clones) was the group I.1b clade, which includes soil ammonia-oxidizing archaea. The unique characteristics of Gotjawal soil, including basalt morphology, vegetation, and groundwater aquifer penetration, may be reflected in the archaeal community composition. Further study is necessary to understand the unique factors of Gotjawal soils that influence archaeal abundance, composition, and diversity.
Highlights
In Jeju, Korea, the word “Gotjawal” refers to any natural forest with trees that grows from basalt-flow rock inHow to cite this paper: Kim, J.-S., Jung, M.-Y., Lee, K.C., Kim, D.-S., Ko, S.-H., Lee, J.-S. and Rhee, S.-K. (2014) The Archaea Community Associated with Lava-Formed Gotjawal Forest Soil in Jeju, Korea
The soil samples collected from Gyorae Gotjawal had a pH of 4.5, an electrical conductivity of 3.44 dS∙m−1, 34% organic matter content, and an NO3– concentration of 300.48 mg∙kg−1 dry soil
Analysis of archaeal 16S rRNA gene sequences was performed with a total of 185 clones
Summary
In Jeju, Korea, the word “Gotjawal” refers to any natural forest with trees that grows from basalt-flow rock in. (2014) The Archaea Community Associated with Lava-Formed Gotjawal Forest Soil in Jeju, Korea. The poorest soil, and forms a virtually impassable mixture of trees and undergrowth [1] These forests are considered to represent sites of international importance because of their unique forest ecosystems and the support provided for ecological communities [2]. The Gotjawal are referred to as the “lungs of Jeju” and provide clean air in exchange for carbon dioxide, which is necessary within the ecosystem. It functions as a roof over pristine aquifers, as well as porous rocks that purify and recharge rainwater. Our study will expand the understanding of soil microbial communities to include those of lava forest soils
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