Metagenomic analysis of microbial communities across a transect from low to highly hydrocarbon‐contaminated soils in King George Island, Maritime Antarctica

Geobiology ◽  
2021 ◽  
Author(s):  
Diogo Jurelevicius ◽  
Raphael da Silva Pereira ◽  
Fabio Faria Mota ◽  
Juliano C. Cury ◽  
Ivan Cardoso Oliveira ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Contaminated Soils ◽  
Metagenomic Analysis ◽  
King George Island ◽  
Maritime Antarctica

scholarly journals Small-scale soil microbial community heterogeneity linked to landforms on King George Island, maritime Antarctica

2018 ◽  
Author(s):  
Yumin Zhang ◽  
Lu Lu ◽  
Xulu xChang ◽  
Fan Jiang ◽  
Xiangdong Gao ◽  
...  
Keyword(s):  
Microbial Community ◽  
Microbial Communities ◽  
Soil Microbial Communities ◽  
Small Scale ◽  
King George Island ◽  
Maritime Antarctica ◽  
Volcanic Stratigraphy ◽  
Elemental Compositions ◽  
Soil Microbial ◽  
Environmental Attributes

ABSTRACTWe analysed soil-borne microbial (bacterial, archaeal, and fungal) communities around the Fildes Region of King George Island, maritime Antarctica, which were divided into two groups according to soil elemental compositions and environmental attributes (soil chemical parameters and vegetation conditions) located in Holocene raised beach and Tertiary volcanic stratigraphy. Prokaryotic communities of the two groups were well separated; they predominantly correlated with soil elemental compositions, and were secondly correlated with environmental attributes (e.g., soil pH, total organic carbon, , and vegetation coverage; Pearson test, r = 0.59 vs. 0.52, both P < 0.01). The relatively high abundance of P, S, Cl, and Br in Group 1 was likely due to landform uplift. Lithophile-elements (Si, Al, Ca, Sr, Ti, V, and Fe) correlated with prokaryotic communities in Group 2 may originate from weathering of Tertiary volcanic rock. The elements and nutrients accumulated during formation of different landforms influenced the development of soils, plant growth, and microbial communities, and resulted in small-scale spatially heterogeneous biological distributions. We propose that the geological evolution of the Fildes Region was crucial to its microbial community development.IMPORTANCEThis current study analyzed soil-borne microbial communities around the Fildes Region of King George Island, maritime Antarctica, which were divided into two groups according to soil elemental compositions and environmental attributes. We provide new evidence for the crucial influence of landforms on small-scale structures and spatial heterogeneity of soil microbial communities.

scholarly journals Searching for signatures across microbial communities: Metagenomic analysis of soil samples from mangrove and other ecosystems

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Madangchanok Imchen ◽  
Ranjith Kumavath ◽  
Debmalya Barh ◽  
Vasco Azevedo ◽  
Preetam Ghosh ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Samples ◽  
Metagenomic Analysis

Pinnularia subcatenaborealis sp. nov. (Bacillariophyta) a new chain-forming diatom species from King George Island (Maritime Antarctica)

Phytotaxa ◽  
2018 ◽  
Vol 364 (3) ◽  
pp. 259 ◽  
Author(s):  
NATALIA KOCHMAN-KĘDZIORA ◽  
EVELINE PINSEEL ◽  
MATEUSZ RYBAK ◽  
TERESA NOGA ◽  
MARIA OLECH ◽  
...  
Keyword(s):  
Morphological Characteristics ◽  
New Taxon ◽  
King George Island ◽  
Maritime Antarctica ◽  
Glacier Forefield ◽  
Valve Size ◽  
James Ross Island ◽  
Small Pool ◽  
A New Species ◽  
Freshwater Diatom

During a survey conducted on the freshwater diatom flora of small shallow pools on the Ecology Glacier forefield (King George Island, Maritime Antarctic Region), an unknown spine-bearing chain-forming Pinnularia species, belonging to the Pinnularia borealis species complex, was found. Although it closely resembles the recently described Pinnularia catenaborealis from James Ross Island and Vega Island (Antarctic Peninsula), a unique set of morphological characteristics revealed in both light and scanning electron microscopy clearly discriminates the specimens of King George Island as a new species. Pinnularia subcatenaborealis Kochman-Kędziora, Pinseel & Van de Vijver sp. nov. can be distinguished from P. catenaborealis by an overall smaller valve size, the presence of irregularly formed silica outgrowths on the mantle and small, irregular plates located near the apices. The new taxon is so far only recorded from a small pool with circumneutral pH and very low conductivity.

scholarly journals Ecological succession of fungal and bacterial communities in Antarctic mosses affected by a fairy ring disease

2021 ◽  
Author(s):  
Luiz Henrique Rosa ◽  
Otávio Henrique Bezerra Pinto ◽  
Lívia Costa Coelho ◽  
Peter Convey ◽  
Micheline Carvalho-Silva ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Bacterial Diversity ◽  
Fungal Community ◽  
Bacterial Communities ◽  
Pathogenic Fungi ◽  
Plant Pathogenic Fungi ◽  
King George Island ◽  
Fairy Rings ◽  
Fungal Assemblages ◽  
Antarctic Mosses

Abstract We evaluated fungal and bacterial diversity in an established moss carpet on King George Island, Antarctica, affected by ‘fairy ring’ disease using metabarcoding. These microbial communities were assessed through the main stages of the disease. A total of 127 fungal and 706 bacterial taxa were assigned. The phylum Ascomycota dominated the fungal assemblages, followed by Basidiomycota, Rozellomycota, Chytridiomycota, Mortierellomycota and Monoblepharomycota. The fungal community displayed high indices of diversity, richness and dominance, which increased from healthy through infected to dead moss samples. Bacterial diversity and richness were greatest in healthy moss and least within the infected fairy ring. Chalara sp. 1, Alpinaria sp., Helotiaceae sp. 2, Chaetothyriales sp. 1, Ascomycota sp. 1, Rozellomycota sp. and Fungi sp. were most abundant within the fairy ring samples. A range of fungal taxa were more abundant in dead rather than healthy or fairy ring moss samples. The dominant prokaryotic phyla were Actinobacteriota, Proteobacteria, Bacteroidota and Cyanobacteria. The taxon Cyanobacteriia sp., whilst consistently dominant, were less abundant in fairy ring samples. Microbacteriaceae sp. and Chloroflexi sp. were the most abundant taxa within the fairy rings. Our data confirmed the presence and abundance of a range of plant pathogenic fungi, supporting the hypothesis that the disease is linked with multiple fungal taxas. Further studies are required to characterise the interactions between plant pathogenic fungi and their host Antarctic mosses. Monitoring the dynamics of mutualist, phytopathogenic and decomposer microorganisms associated with moss carpets may provide bioindicators of moss health.

Distribution of Anaerobic Hydrocarbon-Degrading Bacteria in Soils from King George Island, Maritime Antarctica

2017 ◽  
Vol 74 (4) ◽  
pp. 810-820 ◽  
Author(s):  
Dayanna Souza Sampaio ◽  
Juliana Rodrigues Barboza Almeida ◽  
Hugo E. de Jesus ◽  
Alexandre S. Rosado ◽  
Lucy Seldin ◽  
...  
Keyword(s):  
King George Island ◽  
Maritime Antarctica ◽  
Degrading Bacteria

scholarly journals Metagenomic Analysis of Microbial Diversity in Landfill Lysimeter Soil of Ghazipur Landfill Site, New Delhi, India

2017 ◽  
Vol 5 (42) ◽  
Author(s):  
Juhi Gupta ◽  
Rashmi Rathour ◽  
Madan Kumar ◽  
Indu Shekhar Thakur
Keyword(s):  
Microbial Diversity ◽  
Microbial Communities ◽  
Landfill Site ◽  
Metagenomic Analysis ◽  
New Delhi ◽  
Soil Microbial Diversity ◽  
Soil Microbial ◽  
Functional Aspects ◽  
Waste Degradation ◽  
Metagenomic Approach

ABSTRACT We report the soil microbial diversity and functional aspects related to degradation of recalcitrant compounds, determined using a metagenomic approach, in a landfill lysimeter prepared with soil from Ghazipur landfill site, New Delhi, India. Metagenomic analysis revealed the presence and functional diversity of complex microbial communities responsible for waste degradation.

Vertical profiles of microbial communities in perfluoroalkyl substance-contaminated soils

2018 ◽  
Vol 68 (6) ◽  
pp. 399-408 ◽  
Author(s):  
Yixiang Bao ◽  
Bingxin Li ◽  
Shuguang Xie ◽  
Jun Huang
Keyword(s):  
Microbial Communities ◽  
Contaminated Soils ◽  
Vertical Profiles
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