Genetic and Ecological Characterization of the Invasive Wetland Grasses Arundo donax and Phragmites australis in the Cuatro Ciénegas Basin

2020 ◽  
pp. 241-263
Author(s):  
Ricardo Colin ◽  
Luis E. Eguiarte
Keyword(s):  
Phragmites Australis ◽  
Arundo Donax ◽  
Cuatro Ciénegas ◽  
Cuatro Ciénegas Basin

Characterization of a novel biosurfactant producing Pseudomonas koreensis lineage that is endemic to Cuatro Ciénegas Basin

2011 ◽  
Vol 34 (7) ◽  
pp. 531-535 ◽  
Author(s):  
Jeiry Toribio ◽  
Ana E. Escalante ◽  
Jesús Caballero-Mellado ◽  
Andrea González-González ◽  
Sergio Zavala ◽  
...  
Keyword(s):  
Cuatro Ciénegas ◽  
Cuatro Ciénegas Basin

scholarly journals Comparative Metagenomics of Two Microbial Mats at Cuatro Ciénegas Basin II: Community Structure and Composition in Oligotrophic Environments

Astrobiology ◽  
2012 ◽  
Vol 12 (7) ◽  
pp. 659-673 ◽  
Author(s):  
Germán Bonilla-Rosso ◽  
Mariana Peimbert ◽  
Luis David Alcaraz ◽  
Ismael Hernández ◽  
Luis E. Eguiarte ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Mats ◽  
Comparative Metagenomics ◽  
Cuatro Ciénegas ◽  
Cuatro Ciénegas Basin

Characterization of the Microbial Community in the Rhizosphere of Phragmites australis (Cav.) Trin ex. Steudel Growing in the Sun Island Wetland

2014 ◽  
Vol 86 (3) ◽  
pp. 258-268 ◽  
Author(s):  
Fang Ma ◽  
Jieting Wu ◽  
Li Wang ◽  
Jixian Yang ◽  
Shiyang Li ◽  
...  
Keyword(s):  
Microbial Community ◽  
Phragmites Australis ◽  
The Sun

scholarly journals The Geographic Structure of Viruses in the Cuatro Ciénegas Basin, a Unique Oasis in Northern Mexico, Reveals a Highly Diverse Population on a Small Geographic Scale

2018 ◽  
Vol 84 (11) ◽  
Author(s):  
B. Taboada ◽  
P. Isa ◽  
A. L. Gutiérrez-Escolano ◽  
R. M. del Ángel ◽  
J. E. Ludert ◽  
...  
Keyword(s):  
Fish Species ◽  
Phylogenetic Trees ◽  
Biological Diversity ◽  
Chihuahuan Desert ◽  
Geographic Scale ◽  
Geographic Structure ◽  
Virus Diversity ◽  
Intestinal Contents ◽  
Cuatro Ciénegas ◽  
Cuatro Ciénegas Basin

ABSTRACT The Cuatro Ciénegas Basin (CCB) is located in the Chihuahuan desert in the Mexican state of Coahuila; it has been characterized as a site with high biological diversity despite its extreme oligotrophic conditions. It has the greatest number of endemic species in North America, containing abundant living microbialites (including stromatolites and microbial mats) and diverse microbial communities. With the hypothesis that this high biodiversity and the geographic structure should be reflected in the virome, the viral communities in 11 different locations of three drainage systems, Churince, La Becerra, and Pozas Rojas, and in the intestinal contents of 3 different fish species, were analyzed for both eukaryotic and prokaryotic RNA and DNA viruses using next-generation sequencing methods. Double-stranded DNA (dsDNA) virus families were the most abundant (72.5% of reads), followed by single-stranded DNA (ssDNA) viruses (2.9%) and ssRNA and dsRNA virus families (0.5%). Thirteen families had dsDNA genomes, five had ssDNA, three had dsRNA, and 16 had ssRNA. A highly diverse viral community was found, with an ample range of hosts and a strong geographical structure, with very even distributions and signals of endemicity in the phylogenetic trees from several different virus families. The majority of viruses found were bacteriophages but eukaryotic viruses were also frequent, and the large diversity of viruses related to algae were a surprise, since algae are not evident in the previously analyzed aquatic systems of this ecosystem. Animal viruses were also frequently found, showing the large diversity of aquatic animals in this oasis, where plants, protozoa, and archaea are rare. IMPORTANCE In this study, we tested whether the high biodiversity and geographic structure of CCB is reflected in its virome. CCB is an extraordinarily biodiverse oasis in the Chihuahuan desert, where a previous virome study suggested that viruses had followed the marine ancestry of the marine bacteria and, as a result of their long isolation, became endemic to the site. In this study, which includes a larger sequencing coverage and water samples from other sites within the valley, we confirmed the high virus biodiversity and uniqueness as well as the strong biogeographical diversification of the CCB. In addition, we also analyzed fish intestinal contents, finding that each fish species eats different prey and, as a result, presents different viral compositions even if they coexist in the same pond. These facts highlight the high and novel virus diversity of CCB and its “lost world” status.

Diversity and Community Structure of Ants in the Cuatro Ciénegas Basin, Coahuila, Mexico

2019 ◽  
pp. 129-145
Author(s):  
Milan Janda ◽  
Madai Rosas-Mejía ◽  
Pablo Corcuera ◽  
Mario Josué Aguilar-Méndez ◽  
Miguel Vásquez-Bolaños ◽  
...  
Keyword(s):  
Community Structure ◽  
Cuatro Ciénegas ◽  
Cuatro Ciénegas Basin

scholarly journals Isolation and Characterization of 4-tert-Butylphenol-Utilizing Sphingobium fuliginis Strains from Phragmites australis Rhizosphere Sediment

2010 ◽  
Vol 76 (20) ◽  
pp. 6733-6740 ◽  
Author(s):  
Tadashi Toyama ◽  
Naonori Momotani ◽  
Yuka Ogata ◽  
Yuji Miyamori ◽  
Daisuke Inoue ◽  
...  
Keyword(s):  
Cell Growth ◽  
Phragmites Australis ◽  
Gas Chromatography Mass Spectrometry ◽  
Side Chains ◽  
Isolation And Characterization ◽  
Alkyl Side Chains ◽  
Basal Salts ◽  
Growth Experiments ◽  
Rhizosphere Sediment

ABSTRACT We isolated three Sphingobium fuliginis strains from Phragmites australis rhizosphere sediment that were capable of utilizing 4-tert-butylphenol as a sole carbon and energy source. These strains are the first 4-tert-butylphenol-utilizing bacteria. The strain designated TIK-1 completely degraded 1.0 mM 4-tert-butylphenol in basal salts medium within 12 h, with concomitant cell growth. We identified 4-tert-butylcatechol and 3,3-dimethyl-2-butanone as internal metabolites by gas chromatography-mass spectrometry. When 3-fluorocatechol was used as an inactivator of meta-cleavage enzymes, strain TIK-1 could not degrade 4-tert-butylcatechol and 3,3-dimethyl-2-butanone was not detected. We concluded that metabolism of 4-tert-butylphenol by strain TIK-1 is initiated by hydroxylation to 4-tert-butylcatechol, followed by a meta-cleavage pathway. Growth experiments with 20 other alkylphenols showed that 4-isopropylphenol, 4-sec-butylphenol, and 4-tert-pentylphenol, which have alkyl side chains of three to five carbon atoms with α-quaternary or α-tertiary carbons, supported cell growth but that 4-n-alkylphenols, 4-tert-octylphenol, technical nonylphenol, 2-alkylphenols, and 3-alkylphenols did not. The rate of growth on 4-tert-butylphenol was much higher than that of growth on the other alkylphenols. Degradation experiments with various alkylphenols showed that strain TIK-1 cells grown on 4-tert-butylphenol could degrade 4-alkylphenols with variously sized and branched side chains (ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, tert-pentyl, n-hexyl, n-heptyl, n-octyl, tert-octyl, n-nonyl, and branched nonyl) via a meta-cleavage pathway but not 2- or 3-alkylphenols. Along with the degradation of these alkylphenols, we detected methyl alkyl ketones that retained the structure of the original alkyl side chains. Strain TIK-1 may be useful in the bioremediation of environments polluted by 4-tert-butylphenol and various other 4-alkylphenols.

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