What did Katharine Esau report in her early publications?

The origin of species diversity in plants.

The curly top virus spreads through a plant via the food conducting or phloem tissue.

Plants change light energy to chemical energy by transferring an electron in an organised array of pigment molecules and other substances.

Described a structure located on the basilar membrane of the cochlea containing hair cells that convert sound vibrations into nerve impulses, the organ of Corti.