Abditibacterium utsteinense sp. nov., the first cultivated member of candidate phylum FBP, isolated from ice-free Antarctic soil samples

2018 ◽  
Vol 41 (4) ◽  
pp. 279-290 ◽  
Author(s):  
Guillaume Tahon ◽  
Bjorn Tytgat ◽  
Liesbeth Lebbe ◽  
Aurélien Carlier ◽  
Anne Willems
Keyword(s):  
Soil Samples ◽  
Antarctic Soil

scholarly journals Insights into bacterial cellulose biosynthesis by functional metagenomics on Antarctic soil samples

2009 ◽  
Vol 3 (9) ◽  
pp. 1070-1081 ◽  
Author(s):  
Renaud Berlemont ◽  
Maud Delsaute ◽  
Delphine Pipers ◽  
Salvino D'Amico ◽  
Georges Feller ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Soil Samples ◽  
Antarctic Soil ◽  
Cellulose Biosynthesis ◽  
Functional Metagenomics

Electron Microscopy of Bacterial-Like Microorganisms From the Antarctic Soil

1973 ◽  
Vol 31 ◽  
pp. 568-569
Author(s):  
Ian Uydess ◽  
Wolf Vishniac
Keyword(s):  
Electron Microscopy ◽  
Structural Characteristics ◽  
Uranyl Acetate ◽  
Soil Samples ◽  
Lake Area ◽  
Antarctic Soil ◽  
The Antarctic ◽  
Phosphate Buffered Saline ◽  
Microscopy Examination

Recently, a number of soil samples isolated from geographically distinct regions in the Asgard Range-Vanda Lake area of the Antarctic, were shown to contain living microorganisms which displayed bacterial-like morphologies. The microorganisms isolated from these samples were observed to have heterogeneous structural characteristics ranging from those with “typical” Gram - or Gram + morphologies, to those with “unique” morphologies which may be intermediate to the eubacteria and lower algae.Cell pellets prepared from the various soil samples were rinsed in phosphate buffered saline and fixed in Dalton's Chrome Osmium. These were then post-fixed in aqueous Uranyl Acetate, dehydrated in a graded alcohol series, and then embedded in Epon for electron microscopy. Examination of these preparations revealed the existence of several distinct morphologic types of bacterial-like microorganisms.

scholarly journals Complete Genome Sequence of Yellow Pigment-Producing Sphingobium sp. Strain HAL-16

2020 ◽  
Vol 9 (41) ◽  
Author(s):  
Soon Jae Kwon ◽  
Pyung Cheon Lee
Keyword(s):  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
Soil Samples ◽  
Yellow Pigment ◽  
Antarctic Soil ◽  
Circular Chromosome ◽  
Genes Encoding ◽  
Single Circular Chromosome ◽  
Β Carotene

ABSTRACT Sphingobium sp. strain HAL-16, which was isolated from Antarctic soil samples, synthesizes a yellow pigment. The complete genome consists of a single circular chromosome (4,372,398 bp, with a G+C content of 62.7%) and a single circular plasmid (57,025 bp, with a G+C content of 59.4%). Five genes encoding carotenogenic enzymes were identified, suggesting that the yellow pigment is a hydroxy/keto-β-carotene.

scholarly journals Evaluation of yeasts obtained from Antarctic soil samples as biocontrol agents for the management of postharvest diseases of apple (Malus × domestica)

2012 ◽  
Vol 13 (2) ◽  
pp. 189-199 ◽  
Author(s):  
Silvana Vero ◽  
Gabriela Garmendia ◽  
M. Belén González ◽  
Oscar Bentancur ◽  
Michael Wisniewski
Keyword(s):  
Malus Domestica ◽  
Soil Samples ◽  
Biocontrol Agents ◽  
Antarctic Soil ◽  
Postharvest Diseases

Genetic and biochemical characterization of yeasts isolated from Antarctic soil samples

Polar Biology ◽  
2017 ◽  
Vol 40 (9) ◽  
pp. 1787-1803 ◽  
Author(s):  
Aneta M. Białkowska ◽  
Katarzyna M. Szulczewska ◽  
Joanna Krysiak ◽  
Tomasz Florczak ◽  
Ewa Gromek ◽  
...  
Keyword(s):  
Biochemical Characterization ◽  
Soil Samples ◽  
Antarctic Soil

K-MEANS CLUSTERING ALGORITHM BASED CLASSIFICATION OF SOIL FERTILITY IN NORTH WEST NIGERIA

2020 ◽  
Vol 4 (2) ◽  
pp. 780-787
Author(s):  
Ibrahim Hassan Hayatu ◽  
Abdullahi Mohammed ◽  
Barroon Ahmad Isma’eel ◽  
Sahabi Yusuf Ali
Keyword(s):  
Soil Fertility ◽  
Crop Yield ◽  
Clustering Algorithm ◽  
Soil Samples ◽  
North West ◽  
R Programming ◽  
Available Information ◽  
Northwest Region ◽  
The Relationship

Soil fertility determines a plant's development process that guarantees food sufficiency and the security of lives and properties through bumper harvests. The fertility of soil varies according to regions, thereby determining the type of crops to be planted. However, there is no repository or any source of information about the fertility of the soil in any region in Nigeria especially the Northwest of the country. The only available information is soil samples with their attributes which gives little or no information to the average farmer. This has affected crop yield in all the regions, more particularly the Northwest region, thus resulting in lower food production.  Therefore, this study is aimed at classifying soil data based on their fertility in the Northwest region of Nigeria using R programming. Data were obtained from the department of soil science from Ahmadu Bello University, Zaria. The data contain 400 soil samples containing 13 attributes. The relationship between soil attributes was observed based on the data. K-means clustering algorithm was employed in analyzing soil fertility clusters. Four clusters were identified with cluster 1 having the highest fertility, followed by 2 and the fertility decreases with an increasing number of clusters. The identification of the most fertile clusters will guide farmers on where best to concentrate on when planting their crops in order to improve productivity and crop yield.

Characterization of dissolved organic matter (DOM) extracted from soils by hot water percolation (HWP)

2010 ◽  
Vol 59 (1) ◽  
pp. 99-108 ◽  
Author(s):  
M. Takács ◽  
Gy. Füleky
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Natural Organic Matter ◽  
Extraction Methods ◽  
Soil Samples ◽  
Hot Water ◽  
Soil Extracts ◽  
Water Percolation ◽  
Soil Humic Acid

The Hot Water Percolation (HWP) technique for preparing soil extracts has several advantages: it is easily carried out, fast, and several parameters can be measured from the same solution. The object of this study was to examine the possible use of HWP extracts for the characterization of soil organic matter. The HPLC-SEC chromatograms, UV-VIS and fluorescence properties of the HWP extracts were studied and the results were compared with those of the International Humic Substances Society (IHSS) Soil Humic Acid (HA), IHSS Soil Fulvic Acid (FA) and IHSS Suwannee Natural Organic Matter (NOM) standards as well as their HA counterparts isolated by traditional extraction methods from the original soil samples. The DOM of the HWP solution is probably a mixture of organic materials, which have some characteristics similar to the Soil FA fractions and NOM. The HWP extracted organic material can be studied and characterized using simple techniques, like UV-VIS and fluorescence spectroscopy.

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