Wheat plants that overexpress a corn methyltransferase gene cannot regulate their defence adequately and become susceptible to aphid attack.

Cereals use chemical defences against insects

Science Notes: Plants rely on their toxins not only to fend off caterpillars but also to regulate defence mechanisms against aphids

A team of scientists from the University of Bern in Switzerland and the Max Planck Institute for Chemical Ecology and partners have characterized multiple functions of benzoxazinoids in wheat. The toxic form of the substances makes the plant directly resistant to lepidopteran larvae, whereas a less toxic form regulates indirect defence mechanisms against aphids. Scientists […] Read more