Data from: Lichen fungi do not depend on the alga for ATP production

Lichen fungi live in a symbiotic association with unicellular phototrophs
and have no known aposymbiotic stage. A recent study postulated that some
of them have lost mitochondrial oxidative phosphorylation and rely on
their algal partners for ATP. This claim originated from an apparent lack
of ATP9, a gene encoding one subunit of ATP synthase, from a few
mitochondrial genomes. Here we show that while these fungi indeed have
lost the mitochondrial ATP9, each retain a nuclear copy of this
gene. Our analysis reaffirms that lichen fungi produce their own ATP.