scholarly journals Spatial distribution of marine airborne bacterial communities

2015 ◽  
Vol 4 (3) ◽  
pp. 475-490 ◽  
Author(s):  
Jasmin S. Seifried ◽  
Antje Wichels ◽  
Gunnar Gerdts
Keyword(s):  
Spatial Distribution ◽  
Bacterial Communities

Soil pH drives the spatial distribution of bacterial communities along elevation on Changbai Mountain

2013 ◽  
Vol 57 ◽  
pp. 204-211 ◽  
Author(s):  
Congcong Shen ◽  
Jinbo Xiong ◽  
Huayong Zhang ◽  
Youzhi Feng ◽  
Xiangui Lin ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Soil Ph ◽  
Bacterial Communities ◽  
Changbai Mountain

scholarly journals Subsurface microbial habitats in an extreme desert Mars-analogue environment

2018 ◽  
Author(s):  
Kimberley A. Warren-Rhodes ◽  
Kevin C. Lee ◽  
Stephen D.J. Archer ◽  
Nathalie Cabrol ◽  
Linda Ng-Boyle ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Bacterial Communities ◽  
Atacama Desert ◽  
Geochemical Analysis ◽  
Soluble Salts ◽  
Microbial Life ◽  
Subsurface Sediments ◽  
Sample Recovery ◽  
Osmotic Challenge

AbstractSediments in the hyper-arid core of the Atacama Desert are a terrestrial analogue to Mars regolith. Understanding the distribution and drivers of microbial life in the sediment may give critical clues on how to search for biosignatures on Mars. Here, we identify the spatial distribution of highly specialised bacterial communities in previously unexplored depth horizons of subsurface sediments. We deployed an autonomous rover in a mission-relevant Martian drilling scenario with manual sample validation. Subsurface communities were delineated by depth related to sediment moisture. Geochemical analysis indicated soluble salts and minerology that influenced water bio-availability, particularly in deeper sediments. Colonization was also patchy and uncolonized sediment was associated with indicators of extreme osmotic challenge. The study identifies linkage between biocomplexity, moisture and geochemistry in Mars-like sediments at the limit of habitability and demonstrates feasibility of the rover-mounted drill for future Mars sample recovery.

Responses of bacterial communities to spatial distribution and biogeochemical migration in Panzhihua mining tailing

2021 ◽  
Author(s):  
Ying Yang ◽  
Yi Huang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Enzyme Activity ◽  
Spatial Distribution ◽  
Bacterial Communities ◽  
Rhizosphere Soil ◽  
Soil Samples ◽  
Surface Soils ◽  
Heteropogon Contortus ◽  
16S Rna

<p>Heteropogon contortus were the domiant plants in Panzhihua mining tailing due to the characteristic of drought-enduring and toxicity resistance. The aim of this work was to determine the effects of the successive planting of Heteropogon contortus on soil characteristics, including heavy metals contents and biogeochemical migration. Spatial distribution of heavy metal and enzyme activity in surface soils and rhizosphere soil as well as responses of bacterial community were systematically researched. In the meanwhile, High-throughput 16s RNA sequencing results indicated that the abundance and diversity of bacterial communities from different altitude locations were quite diverse in soil samples. The contents of some heavy metals and enzyme activity markedly affected on the structures of bacterial communities surface soils and rhizosphere soil. The most abundant bacterial communities were Actinobacteria (29.74 %), Proteobacteria (28.06 %), Chloroflexi (13.73%) in phylum level in the original soil samples. The abundance of Proteobacteria (19.87 %, 27.57 %, 29.35 %) and Patescibacteria (1.56 %, 1.83 %, 2.66 %) of non-rhizosphere soil was gradually increased along with the increasing latitude, which is just the opposite rule to the abundance of Acidobacteria (17.19 %, 14.58 %, 11.77 %) and Gemmatimonadetes (4.61 %, 3.17 %, 2.86 %). Results in this study emphasized the heavy metal contaminations in soils and rhizosphere soil, providing valuable information on how heavy metal contamination influences soil bacterial communities across a chronosequence spanning 50 years.</p>

Sign in / Sign up

Export Citation Format

Share Document