All The Americas articles
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NewsFirst known lichen in the fossil record helped structure terrestrial ecosystems
A group of researchers has confirmed the identity of the first lichens to inhabit Earth, Spongiophyton, around 410 million years ago, in great detail for the first time. The study confirms that the symbiosis between fungi and algae that dissolves rocks helped form the first soils.
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NewsAncient DNA pushes back record of treponemal disease-causing bacteria by 3,000 years
Scientists have recovered a genome of Treponema pallidum from 5,500-year-old human remains in Sabana de Bogotá, Colombia. The research expands knowledge about the history of this infectious disease and its occurrence in human populations.
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NewsDeadly to amphibians, a fungal strain emerged in Brazil and spread around the world
The fungal infection Batrachochytrium dendrobatidis is responsible for the decline of toad and frog populations across the globe. A new study has pinpointed the origin of the fungal strain.
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NewsSoil microbes in Colombia’s páramo and tropical forests respond to seasonal shifts
A new study has demonstrated that microbial communities in the soil of Colombia’s tropical forests and high-altitude páramos are significantly influenced by seasonal changes, particularly during the dry season.
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NewsThe COVID-19 virus manipulates host cell RNA to shut down the immune system
Researchers have discovered that SARS-CoV-2 uses a sophisticated tactic to evade the human body’s defense system. In addition to evading the immune system before invading the host cell, SARS-CoV-2 manipulates the host cell’s genetic material in a way never before seen in other pathogens.
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CareersCBCTA 2024 oral presentation winners: Isabella and Lia take home the honours
Letters in Applied Microbiology sponsored the best oral presentation award at the 29th Brazilian Congress of Food Science and Technology (CBCTA 2024). Winner Isabella Bassoto Xavier and runner-up Lia Mariano Aquino take a dive into their research.
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NewsRice resists change: Study reveals viral tools for probing gene function fall short
Researchers tested two popular viral vectors - barley stripe mosaic virus (BSMV) and foxtail mosaic virus (FoMV) - to see if they could temporarily switch genes on or off in rice (Oryza sativa). They found no evidence that these virus-enabled reverse genetics (VERG) techniques work in rice.
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NewsParasitic fungus may have emerged 18 million years before the ants with which it lives today
An analysis of 309 strains indicates that the genus Escovopsis emerged 56.9 million years ago, but only began interacting with today’s mutualistic ants 38 million years ago, challenging the theory that they all emerged at the same time.
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CareersThe Future is Fungi 2025: award-winner Michroma’s mission to harness fungi for clean food dyes and flavors
Winner of The Future is Fungi Award 2025, US and Argentina-based foodtech startup Michroma is replacing petrochemical coloring with fungibased natural ingredients, launching one of the world’s leading sustainable platforms for food flavors and colors. Here’s its story.
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NewsStudy links childhood vaccination to lower risk of drug-resistant bacteria
Children in Guatemala who received a common vaccine that helps prevent pneumonia were less likely to carry antibiotic-resistant bacteria, according to a new study examining whether rotavirus (RV) and pneumococcal (PCV13) vaccines reduce gut colonization by a group of bacteria.
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NewsMetabolites produced in the intestine play a central role in controlling obesity and diabetes
A study has identified a group of metabolites that travel from the intestine to the liver and then to the heart, where they are pumped throughout the body. These metabolites play an important role in controlling metabolic pathways in the liver and insulin sensitivity.
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OpinionWe couldn’t get people interested in science - until we started speaking their language
In 2020, Puerto Rico faced a misinformation crisis. Melanie Ortiz Alvarez De La Campa reveals how five STEM undergraduates created a sci-comm organization that helped pass legislation, educated thousands, and created an inclusive database of Caribbean scientists.
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OpinionPride in Microbiology Network: the road so far
Bruno Francesco Rodrigues de Oliveira, a founding member of the Pride in Microbiology Network, reveals how it has developed since it was launched three years ago - and what needs to happen next.
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NewsRainfall and temperature shape mosquito fauna in Atlantic Forest bromeliads, including malaria vectors
Results from a study of mosquito larvae conducted in a natural area in the municipality of São Paulo (Brazil) may help estimate the effects of climate change on disease transmission risk in the biome.
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NewsMissing links for rabies in Peru highlights global threats of health inequity
Researchers found that efforts to track dog-related rabies in poorer areas of Peru’s second largest city were lacking even though more dogs were found to have the disease there than in wealthier neighborhoods.
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NewsAccessible imaging technique can predict cardiac risks in patients with Chagas disease
A simple imaging exam capable of assessing myocardial deformation during contraction has emerged as a promising tool for predicting the risk of cardiac complications in patients with chronic Chagas disease.
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NewsGlobal Virus Network welcomes new centers of excellence across the Americas
The Global Virus Network (GVN), a coalition of leading medical virologists representing 80+ Centers of Excellence and Affiliates in 40+ countries, has announced the addition of three new Centers of Excellence.
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NewsMalaria risk in the Amazon is higher in regions with intermediate forest degradation
Research shows that areas with 50% deforestation near residential areas or fragmented vegetation allow greater contact between mosquitoes and humans. The study helps us understand the link between forest destruction and the spread of the disease.
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NewsUnderwater thermal vents may have given rise to the first molecular precursors of life
A new study shows that, without the presence of enzymes, natural gradients of pH, redox potential, and temperature present in underwater hydrothermal vents could have promoted the reduction of carbon dioxide to formic acid and the subsequent formation of acetic acid.
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NewsIn the midst of a global dengue epidemic, Wolbachia kept a Brazilian city safe
In the middle of the world’s worst global dengue epidemic, a city in Brazil was effectively protected by an innovative program that introduced the bacterium Wolbachia into the local mosquito population, lowering the rate of dengue by almost 90 per cent.