title: Investigations on the Role of Boron in Plants III. Anatomical Observations.
abstract: Electron microscopic examination of leaf mesophyll cells of boron-deficient sunflower plant reveals that chloroplasts degenerate and cell walls undergo profound structural changes before any visual deficiency symptoms become apparent. Mitochondria, which increase in number as deficiency develops, frequently show myeline figures, while nuclei may develop dense rhombohedral structures.
authors.affiliation: Department of Biochemistry and Biophysics, Iowa State University, Ames, Iowa 50010.
authors.forename: S G
authors.initials: SG
authors.lastname: Lee
authors.forename: S
authors.initials: S
authors.lastname: Aronoff