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Roots face many challenges in the soil in order to supply the plant with the necessary water and nutrients. New work from Carnegie and Stanford University’s José Dinneny shows that one of these challenges, salinity, can cause root cells to explode if the risk is not properly sensed. Salinity has deleterious effects on plant health and limits crop yields, because salt inhibits water uptake and can be toxic for plants. But Dinneny and his collaborators, including Alice Cheung at the University of Massachusetts Amherst and Carnegie’s Wei Feng determined a never-before-described effect that salt has on the plant cell wall.

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