TRABAJO PUBLICADO

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Febrero 2020

In this non-exhaustive compendium on our flora and fauna of medical interest, a sample of terrestrial plants, marine organisms, fungi, amphibians, reptiles, scorpions, and insects that can affect human health is included. The descriptions of the selected plants, fungi and animals illustrate us about their habitat, their distribution in the country and about the toxic reactions that can occur when these organisms interact with humans.

Noviembre 2019

In this non-exhaustive compendium on our flora and fauna of medical interest, a sample of terrestrial plants, marine organisms, fungi, amphibians, reptiles, scorpions, and insects that can affect human health is included. The descriptions of the selected plants, fungi and animals illustrate us about their habitat, their distribution in the country and about the toxic reactions that can occur when these organisms interact with humans.

Septiembrer 2019

In this non-exhaustive compendium on our flora and fauna of medical interest, a sample of terrestrial plants, marine organisms, fungi, amphibians, reptiles, scorpions, and insects that can affect human health is included. The descriptions of the selected plants, fungi and animals illustrate us about their habitat, their distribution in the country and about the toxic reactions that can occur when these organisms interact with humans.

Agosto 2019

In this non-exhaustive compendium on our flora and fauna of medical interest, a sample of terrestrial plants, marine organisms, fungi, amphibians, reptiles, scorpions, and insects that can affect human health is included. The descriptions of the selected plants, fungi and animals illustrate us about their habitat, their distribution in the country and about the toxic reactions that can occur when these organisms interact with humans.

Junio 2019

In this non-exhaustive compendium on our flora and fauna of medical interest, a sample of terrestrial plants, marine organisms, fungi, amphibians, reptiles, scorpions, and insects that can affect human health is included. The descriptions of the selected plants, fungi and animals illustrate us about their habitat, their distribution in the country and about the toxic reactions that can occur when these organisms interact with humans.

Marzo 2019

Background Malaria control in Panama is problematic due to the high diversity of morphologically similar Anopheles mosquito species, which makes identification of vectors of human Plasmodium challenging. Strategies by Panamanian health authorities to bring malaria under control targeting Anopheles vectors could be ineffective if they tackle a misidentified species. Methods A rapid mass spectrometry identification procedure was developed to accurately and timely sort out field-collected Neotropical Anopheles mosquitoes into vector and non-vector species. Matrix-assisted laser desorption/ionization (MALDI) mass spectra of highly-abundant proteins were generated from laboratory-reared mosquitoes using different extraction protocols, body parts, and sexes to minimize the amount of material from specimen vouchers needed and optimize the protocol for taxonomic identification. 

Febrero 2019

Mangroves plants and their endophytes represent a natural source of novel and bioactive compounds. In our ongoing research on mangrove endophytes from the Panamanian Pacific Coast, we have identified several bioactive endophytic fungi. From these organisms, an isolate belonging to the genus Zasmidium (Mycosphaerellaceae) showed 91.3% of inhibition against α-glucosidase enzyme in vitro. Results Zasmidium sp. strain EM5-10 was isolated from mature leaves of Laguncularia racemosa, and its crude extract showed good inhibition against α-glucosidase enzyme (91.3% of inhibition).

June 2018

Pseudoalteromonas is a genus of marine bacteria often found in association with other organisms. Although several studies have examined Pseudoalteromonas diversity and their antimicrobial activity, its diversity in tropical environments is largely unexplored. We investigated the diversity of Pseudoalteromonas in marine environments of Panama using a multilocus phylogenetic approach. Furthermore we tested their antimicrobial capacity and evaluated the effect of recombination and mutation in shaping their phylogenetic relationships. The reconstruction of clonal relationships among 78 strains including 15 reference Pseudoalteromonas species revealed 43 clonal lineages, divided in pigmented and non‐pigmented strains

December 2017

The fungus-growing ant-microbe symbiosis is an ideal system to study chemistry-based microbial interactions due to the wealth of microbial interactions described, and the lack of information on the molecules involved therein. In this study, we employed a combination of MALDI imaging mass spectrometry (MALDI-IMS) and MS/MS molecular networking to study chemistry-based microbial interactions in this system. MALDI IMS was used to visualize the distribution of antimicrobials at the inhibition zone between bacteria associated to the ant Acromyrmex echinatior and the fungal pathogen Escovopsis sp. MS/MS molecular networking was used for the dereplication of compounds found at the inhibition zones.

July 2017

It is increasingly recognized that microbiota affect host health and physiology. However, it is unclear what factors shape microbiome community assembly in nature, and how microbiome assembly can be manipulated to improve host health. All plant leaves host foliar endophytic fungi, which make up a diverse, environmentally acquired fungal microbiota. Here, we experimentally manipulated assembly of the cacao tree (Theobroma cacao) fungal microbiome in nature and tested the effect of assembly outcome on host health. Using next-generation sequencing, as well as culture-based methods coupled with Sanger sequencing, we found that manipulating leaf litter exposure and location within the forest canopy significantly altered microbiome composition in cacao.

May 2016

Background The pathogenesis-related (PR) group of proteins are operationally defined as polypeptides that increase in concentration in plant tissues upon contact with a pathogen. To date, 17 classes of highly divergent proteins have been described that act through multiple mechanisms of pathogen resistance. Characterizing these families in cacao, an economically important tree crop, and comparing the families to those in other species, is an important step in understanding cacao’s immune response.

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