Growing several plant varieties in the same field for disease resistance is a longstanding agricultural practice, but can have unpredictable results.
by Jean-Benoit Morel at Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement, Montpellier, France, and colleagues suggests that plant-to-plant interactions may confer disease immunity in both wheat and rice.
The researchers identified 23 same-species mixtures where plant-to-plant interactions modulated disease susceptibility, suggesting that Neighbor-Modulated Susceptibility is a relatively frequent phenomenon. They observed both positive and negative effects of the neighbors, indicating that the consequences of plant-to-plant interactions can be variable.
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