title: Microbiology. Leaf bacteria fertilize trees, researchers claim.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Pennisi
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D009586:Nitrogen Fixation; D018515:Plant Leaves / Q000382:microbiology*; D032107:Populus / Q000254:growth & development* / Q000382:microbiology*