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A group of scientists has revealed the mechanism whereby Salvator merianae—the black and white tegu, also called the Argentine giant tegu—is able to keep warm by raising its own body temperature during the reproductive season even while it is in a dark burrow. This had never been observed before in reptiles. An article on the study is published in Acta Physiologica "Generally speaking, only birds and mammals are considered endotherms, which can keep warm even in a cooling [...]

For thousands of years, plants have evolved in the presence of wildfires in the Cerrado, Brazil's savanna-like biome. Scientists at São Paulo State University (UNESP) studied the effect of smoke on seed germination for 44 plant species typical of the Cerrado, as reported in an article published in Plant Ecology , where they stress that their findings could be used to optimize the restoration of degraded areas. The study was conducted by Ph.D. candidate Gabriel Schmidt Teixeira [...]

In an article published in the journal Proceedings of the National Academy of Sciences , researchers at the University of São Paulo's Luiz de Queiroz College of Agriculture (ESALQ-USP) in Brazil describe for the first time how strigolactones, plant hormones discovered several decades ago, control flowering and fruiting in the tomato (Solanum lycopersicum). The findings of their study point to a new opportunity for management of fruiting time and could have a significant impact on [...]

Research indicates that while the most severe effects of SARS-CoV-2 were observed in patients with acute COVID-19 , individuals who experienced milder cases and were not hospitalized also reported symptoms of memory loss and attention deficits lasting over 18 months post-infection. Memory loss and attention deficit are common complaints among severe COVID-19 survivors. However, these and other cognitive impairments have also been observed in patients with mild cases more than 18 months after [...]

Memory loss and attention deficit are common complaints among those who have recovered from severe COVID-19. However, a new study from the University of São Paulo (USP) in Brazil reveals that even individuals with mild COVID cases can experience cognitive impairments more than 18 months after infection.  This finding underscores the importance of comprehensive rehabilitation for long COVID sufferers. COVID infection and cognitive [...]

Researchers at the Federal University of São Paulo (UNIFESP) and the University of São Paulo (USP) have determined, for the first time with precision, the vertical limits of the marine environments in the Southwest Atlantic, the region comprising the offshore and coastal zones of the Atlantic side of South America. The study is reported in an article published in the journal Marine Environmental Research The main finding is the upper boundary of the mesophotic zone, the [...]

A group of researchers has found that the key criteria according to which areas of the Atlantic Rainforest can be legally cleared by their owners are defined in too "subjective and imprecise" a manner in Brazil's environmental legislation, allowing for the destruction of valuable forest that provides important ecosystem services. The group proposes changes to simplify the licensing process for landowners while at the same time making conservation policy more effective. The [...]

The work makes it possible to tell the story of the fusion of genomes that gave rise to the world's most consumed species , as well as identifying genes responsible for resistance to rust and other diseases. Coffee is one of the world's most traded commodities, and Coffea arabica is the most widely consumed of the 130 or so species that exist. It is the result of the fusion of two other species: Coffea canephora (known in Brazil as Conilon or Robusta coffee) and Coffea eugenioides . [...]

Researchers now have unlocked the genome of the Arabica species and traced its origins to a natural mating between two other coffee species an estimated 610,000 to one million years ago in the forests of Ethiopia. That makes this species older than our own species Homo sapiens, which arose in Africa about 300,000 years ago. The researchers sequenced the genomes of 39 Arabica varieties, including a specimen from the 18th century, to create the highest quality genome to date of this species, [...]