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Images taken from an unmanned aerial vehicle, processed with free software, help assess water stress parameters in corn experiments and select varieties that are better adapted to water shortages. A method using free software and a drone with a low-cost camera has made it possible to select drought-tolerant corn plants. The tool contributes to the selection of plants that can better withstand water stress, one of the impacts of climate change on agriculture. The results of the experiments [...]

An enzyme cloned from an insect found by Brazilian researchers – and genetically modified – makes it possible to monitor intracellular acidity and could be used to study diseases and drugs. The gene encoding an enzyme from a firefly, discovered at the Sorocaba campus of the Federal University of São Carlos (UFSCar) in Brazil, has given rise to a biosensor capable of detecting pH changes in mammalian cells – which could be useful, for example, in studying diseases and [...]

Fruit coated with the material developed by researchers at the University of São Paulo showed 11% less weight loss during storage and took longer to start becoming contaminated by fungi An edible biofilm, obtained from agricultural and fishing waste and developed by researchers at the São Carlos Institute of Chemistry of the University of São Paulo (IQSC-USP) in Brazil, allows the shelf life of strawberries (Fragaria x ananassa Duch.) to be extended. In laboratory [...]

In experiments conducted at the University of São Paulo, tumor stem cells became less able to proliferate and invade tissues when the production of the prion protein was blocked by gene editing; the results suggest that the molecule could be a therapeuti Glioblastoma (GBM), one of the most aggressive types of brain cancer, is one of the greatest challenges for medicine, both because it is difficult to treat and because of its high mortality rate. In Brazil, although no exact figures [...]

Agricultural fertilizers are critical for feeding the world’s population, restoring soil fertility and sustaining crops. Excessive and inefficient use of those resources can present an environmental threat, contaminating waterways and generating greenhouse gases such as nitrous oxide. Now, researchers reporting in ACS Agricultural Science & Technology have addressed those challenges with glass fertilizer beads. The beads control nutrient release, and the researchers say they’re [...]

Wie Gewitter und Pflanzen-Ausdünstungen Kondensationskeime erzeugen. Der Regenwald im Amazonas dünstet riesige Mengen von gasförmigem Isopren aus. Bislang galt, dass dieses Molekül nicht weit in der Atmosphäre verbreitet wird, da es unter Lichteinwirkung rasch zerfällt. Die Messkampagne CAFE-Brazil lieferte Daten für zwei Studien, die jetzt als Titelgeschichte der Zeitschrift Nature erscheinen und das anders sehen: Demnach transportieren nächtliche [...]

A recent study from the University of Würzburg unveiled a key enzyme involved in producing selenoproteins, opening new strategies for treating certain types of cancer in children. Selenoproteins are crucial for several biological functions, including the breakdown of harmful substances, immune system support, and regulating metabolic processes. However, in specific contexts, these proteins can be misused and shield cancer cells from death. One such protein, glutathione peroxidase 4 [...]

In a study conducted at the University of São Paulo and described in Scientific Reports, the diameter of semiconductor quantum dots was monitored in real time via the wavelength of the emitted light. Luminescence refers to the result of a process in which an object absorbs light at one wavelength and then re-emits it at another wavelength. Through light absorption, electrons in the ground state of the material are excited to a higher energy state. After a certain amount of time [...]

Many new drugs inhibit the processes that cancer cells need to divide rapidly. So as to inhibit the cancer as a whole. But cancer cells have all sorts of workarounds to get around that effect. As a result, the tumor becomes unresponsive to treatment. That’s why researcher Matheus dos Santos Dias is taking a completely different approach. He had to convince some colleagues before he could start working on this quite surprising idea. After all, you’re not going to give cancer cells [...]