Archaeal communities in mineral soils were compared between a boreal forest in Finland and cold-temperate forest in Japan using 16S rRNA gene-targeted high-throughput sequencing. In boreal soils, Thaumarchaeota Group 1.1c archaea predominated and Thaumarchaeota Group 1.1a-associated and Group 1.1b archaea were also detected. In temperate soils, Thaumarchaeota Group 1.1a-associated and Group 1.1b archaea were dominant members at the subsurface, whereas their dominancy was replaced by Thermoplasmata archaea at the subsoil. An analysis of the ammonia monooxygenase subunit A gene of Archaea also indicated the distribution of Thaumarchaeota Group 1.1a-associated and Group 1.1b archaea in these soils.
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http://dx.doi.org/10.1264/jsme2.ME17100 | DOI Listing |
Environ Microbiol
January 2025
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China.
Deep-sea sediments contain a large number of Thaumarchaeota that are phylogenetically distinct from their pelagic counterparts. However, their ecology and evolutionary adaptations are not well understood. Metagenomic analyses were conducted on samples from various depths of a 750-cm sediment core collected from the Mariana Trench Challenger Deep.
View Article and Find Full Text PDFBiology (Basel)
August 2024
College of Life Science, Yantai University, Yantai 264005, China.
J Bacteriol
September 2024
Department of Marine Science, University of Texas at Austin, Marine Science Institute, Port Aransas, Texas, USA.
Until recently, microbiologists have relied on cultures to understand the microbial world. As a result, model organisms have been the focus of research into understanding Bacteria and Archaea at a molecular level. Diversity surveys and metagenomic sequencing have revealed that these model species are often present in low abundance in the environment; instead, there are microbial taxa that are cosmopolitan in nature.
View Article and Find Full Text PDFFront Microbiol
July 2024
Citrus Research and Education Center, Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences (IFAS), University of Florida, Lake Alfred, FL, United States.
Introduction: Citrus is one of the most important fruit crops worldwide, and the root-associated microbiota can have a profound impact on tree health and growth.
Methods: In a collaborative effort, the International Citrus Microbiome Consortium investigated the global citrus root microbiota with samples collected from nine citrus-producing countries across six continents. We analyzed 16S rDNA and ITS2 amplicon sequencing data to identify predominant prokaryotic and fungal taxa in citrus root samples.
Appl Microbiol Biotechnol
May 2024
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
Crop roots selectively recruit certain microbial taxa that are essential for supporting their growth. Within the recruited microbes, some taxa are consistently enriched in the rhizosphere across various locations and crop genotypes, while others are unique to specific planting sites or genotypes. Whether these differentially enriched taxa are different in community composition and how they interact with nutrient cycling need further investigation.
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