To avoid salt in soil, plants can change their root direction and grow away from saline areas. Researchers helped find out what makes this possible. The discovery changes our understanding of how plants change their shape and direction of growth and may help alleviate the accelerating global problem of high soil salinity on farmland.To avoid salt in soil, plants can change their root direction and grow away from saline areas. Researchers helped find out what makes this possible. The discovery changes our understanding of how plants change their shape and direction of growth and may help alleviate the accelerating global problem of high soil salinity on farmland.