Plants protect themselves against fungal invaders by closure of their stomatal pores. (Image: Michaela Kopischke)
Using special receptors, plants recognize when they are at risk of fungal infection. This new finding could help cultivate resistant crops and reduce pesticide usage. Plants are under constant pressure from fungi and other microorganisms. The air is full of fungal spores, which attach themselves to plant leaves and germinate, especially in warm and humid weather. Some fungi remain on the surface of the leaves. Others, such as downy mildew, penetrate the plants and proliferate, extracting important nutrients. These fungi can cause great damage in agriculture.
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