How A Harmful Fungus Renders Its Host Plant Defenseless
Published:14 Aug.2022 Source:University of Bonn
Ustilago maydis attacks and reproduces in the aerial parts of the corn plant. Huge tumor-like tissue growth often form at the site of infection. These galls can reach the size of a child's head.
The growths are triggered by molecules released by the fungus, called effectors. They manipulate the plant's metabolism and suppress its immune system. They also promote cell growth and division in corn. To do this, they interfere with a plant signaling pathway regulated by the plant hormone auxin.