By Walt Hickey Good morning! Oranges Citrus greening is a disease that has had a terrible impact on orange groves in Florida. Production of oranges has collapsed from 300 million boxes in 2000 to just 70 million boxes in 2019, and the disease has further spread to groves in Texas and some trees in California. Still, researchers have found a compelling gene in a distant relative of the orange, the Australian finger lime. They grow on small trees in the rainforest, are rising in popularity as an exotic fruit (they’re tasty, sort of a roe-like texture with a fierce acidic and sour citrus taste), and most importantly for the Floridians, they’re resistant to citrus greening. The peptide they produce to ward off the bacteria has now been isolated and found to reduce symptoms when sprayed or injected, with the goal of federal approval soon.
We sent an email to with a link to finish logging in.