Air samples were collected during an expedition of the research vessel Heincke in 2021. The data reveals the amount of different types of plastic in the ocean air. Analyses showed that microplastic particles from polyester and other plastics such as polyethylene terephthalate (PET), polypropylene (PP), polycarbonate and polystyrene were present in all samples. The most common sources of these particles include textile fibres and tyre wear from cars. The concentration of microplastics in the air reached up to 37.5 nanograms per cubic metre.
How powdery mildew outwits the defenses of plants
Every year, fungal diseases cause major yield losses in cereals worldwide. At the molecular biological level, there is a constant arms race between plants and their pathogens. Fungi use certain molecules, known as effectors, to trick the plant's immune system. The plant, in turn, learns to recognize these effectors and still activate its defenses. The fungi then change their effectors, and the plant must again develop immune receptors to recognize them. And so the game goes on and on.