title: Histological Compartmentation of Phosphate in Vicia faba L. Leaflet : Possible Significance to Stomatal Functioning.
abstract: Guard cells, epidermal cells, palisade parenchyma cells, and spongy parenchyma cells of Vicia faba L. leaflet were analyzed for inorganic phosphate and phosphorus. On a molar basis, cells in the epidermal layer contained about 15-fold more inorganic phosphate than mesophyll cells did. Although a metabolic role for this asymmetric distribution cannot be defined unequivocally, we note that high epidermal inorganic phosphate would buffer against pH changes in the epidermis during stomatal movements.
authors: Biology Unit 1, Florida State University, Tallahassee, Florida 32306.
authors: W H
authors: WH
authors: Outlaw
authors: M C
authors: MC
authors: Tarczynski
authors: W I
authors: WI
authors: Miller