Alejandro A Murillo

Alejandro A Murillo
Instituto de Fomento Pesquero (IFOP)

Doctor in Biological Sciences (PUC)

About

28
Publications
2,021
Reads
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428
Citations
Introduction
My current position is at the "Instituto de Fomento Pesquero"/Fisheries Development Institute (IFOP), as Coordinator of Communications and outreach, for the Chilean-Japanese consortium MACH-SATREPS.
Additional affiliations
October 2011 - present
University of Concepción
Position
  • Identity and functional diversity of inorganic carbon-fixing bacterial community in costal waters with low oxygen: a probing with stable isotopes and metagenomic. Postdoctoral FONDECYT 3120047.
June 2010 - December 2012
University of Concepción
Position
  • Microbial diversity and activity in the seasonal hypoxic coastal waters off Central Chile and Oregon: A comparative study. Gordon and Betty Moore Foundation.
March 2008 - May 2010
Pontificia Universidad Católica de Chile
Position
  • Biosynthesis of saxitoxin and cylindrospermopsin in the cyanobacterium Cylindrospermopsis raciborskii: Identification of the genes involved in its regulation. FONDECYT 1080075.
Education
March 2005 - September 2007
Pontificia Universidad Católica de Chile
Field of study
  • Biological Sciences
March 2005 - March 2011
Pontificia Universidad Católica de Chile
Field of study
  • Biological Sciences, Microbiology
March 1999 - August 2004
Pontificia Universidad Católica de Chile
Field of study
  • Biological Sciences

Publications

Publications (28)
Article
Full-text available
Marine picocyanobacteria of the genus Prochlorococcus are the most abundant photosynthetic organisms in the modern ocean, where they exert a profound influence on elemental cycling and energy flow. The use of transmembrane chlorophyll complexes instead of phycobilisomes as light-harvesting antennae is considered a defining attribute of Prochlorococ...
Article
Euphausiids (krill) are important contributors to marine biomass and key players in marine pelagic trophic webs. Euphausiid stomachs represent a specific niche for microbes that participate in the digestion of the host’s dietary components. Methods for the study of the diversity and function of these microorganisms remain complex. Bacterial ribosoma...
Preprint
Full-text available
Euphausiids (or krill) are important contributors to marine biomass and key players in marine pelagic trophic webs. Euphausiids stomachs represent a specific niche for microbes that participate in the digestion of the host dietary components. To date, methods for the study of the diversity and function of these microorganisms remain complex. Often,...
Article
Full-text available
Seasonal wind-driven upwelling, high primary production in surface waters, and oxygen deficiency in subsurface waters characterize the coastal ecosystem of the subtropical eastern South Pacific (ESP), and shape the nature and dynamics of the microbial community structure and function. We investigated the diversity, abundance, and transcriptional le...
Article
Nitrous oxide (N2O) is a trace gas affecting atmospheric radiative forcing through its greenhouse effect in the troposphere and destroying the ozone in the stratosphere. The oceans account for one- third of the global atmospheric N2O emissions, in which they are primarily cycled by nitrification and denitrification, with high N2O production in the...
Article
Full-text available
Sulfur-oxidizing γ-proteobacteria are abundant in marine oxygen-deficient waters, and appear to play a key role in a previously unrecognized cryptic sulfur cycle. Metagenomic analyses of members of the uncultured SUP05 lineage in the Canadian seasonally anoxic fjord Saanich Inlet (SI), hydrothermal plumes in the Guaymas Basin (GB) and single cell g...
Article
The toxigenic freshwater cyanobacterium Cylindrospermopsis raciborskii T3 has been used as a model to study and elucidate the biosynthetic pathway of tetrahydropurine neurotoxins associated with paralytic shellfish poisoning (PSP). There are nevertheless several inconsistencies and contradictions in the toxin profile of this strain as published by...
Data
Full-text available
Comparison of the gene clusters for heterocyst polysaccharide biosynthesis. The comparison was based in the gene cluster described for Anabaena sp. PCC 7120 [51]. (0.10 MB PDF)
Data
Size estimation of D9 and CS-505 genomes by PFGE restriction analysis. Restriction profiles were obtained by Mlu I digestion. SC: Chromosomic DNA from Saccharomyces cerevisiae. Vpkx: Genomic DNA from Vibrio parahaemolyticus RIMD 2210633 digested with Not I. PFGE electrophoresis conditions are described in Stucken et al., [22]. (0.40 MB TIF)
Data
Possible extrachromosomal element in the CS-505 genome. PFGE of chromosomic DNA from strains D9 and CS-505, the possible plasmid is indicated by the arrow. SC: Chromosomic DNA from Saccharomyces cerevisiae. (0.25 MB TIF)
Data
Distribution of the total unique CDS of CS-505 and D9 into Cluster of Orthologous Groups (COGs). Unique CDS were obtained by a Best-Bidirectional Hits (BBHs) search between both genomes using a 30% cutoff. (0.57 MB TIF)
Data
Structure and comparison of the toxin gene clusters in CS-505 and D9 with those previously described. A. Comparison of the CYN gene cluster of strain CS-505 with the cyr gene cluster described in C. raciborskii AWT205 [12]; B. Comparison of the STX gene cluster of strain D9 with the sxt gene cluster described in C. raciborskii T3 [13]. Identical OR...
Data
Cell division genes in cyanobacteria (0.02 MB XLS)
Data
Genes common to all heterocystous cyanobacteria (0.06 MB XLS)
Data
83 Previously described regulatory genes present in the genomes of the terminal heterocystous cyanobacteria C. raciborskii CS-505 and the non-heterocystous R. brookii D9. (0.06 MB PDF)
Data
Repeated sequences in a repeat unit as revealed by an analysis using miropeats. The analysis was performed according to Parsons, (1995), with a threshold score of 100 [58]. (0.72 MB TIF)
Data
Full-text available
Phylogenetic relationships of the 10 CDS found as core in 9 filamentous cyanobacteria. Affiliations to the cyanobacterial subsections are shown in brackets. The trees were constructed with clustalX, using the Neighbor-Joining algorithm with bootstrap of 1000, only bootstrap values higher than 60% are shown over the nodes. When available, unicellula...
Data
List of the unique CDS of CS-505 and D9 and their classification into the different COG categories. (0.17 MB XLS)
Data
Supplementary Material and Methods (0.06 MB DOC)
Article
Full-text available
Cyanobacterial morphology is diverse, ranging from unicellular spheres or rods to multicellular structures such as colonies and filaments. Multicellular species represent an evolutionary strategy to differentiate and compartmentalize certain metabolic functions for reproduction and nitrogen (N(2)) fixation into specialized cell types (e.g. akinetes...
Article
Cylindrospermopsis raciborskii is a species of freshwater, bloom-forming cyanobacterium. C. raciborskii produces toxins, including cylindrospermopsin (hepatotoxin) and saxitoxin (neurotoxin), although non toxin-producing strains are also observed. In spite of differences in toxicity, C. raciborskii strains comprise a monophyletic group, based upon...
Article
Full-text available
The large pathogenicity island (SPI7) of Salmonella enterica serovar Typhi is a 133,477-bp segment of DNA flanked by two 52-bp direct repeats overlapping the pheU (phenylalanyl-tRNA) gene, contains 151 potential open reading frames, and includes the viaB operon involved in the synthesis of Vi antigen. Some clinical isolates of S. enterica serovar T...

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Projects

Project (1)
Project
https://www.frontiersin.org/research-topics/7112/marine-microbiome-and-biogeochemical-cycles-in-marine-productive-areas This Research Topic is devoted to gather research from different disciplines tackling the complexity of marine productive areas and aims to untangle the interactions between planktonic communities. The above does not exclude the submission of traditional-approached research, that can give new insights into coastal marine environments.