Micromorphology and monolignols of leaf epidermis in Phragmites australis (Poaceae) of air-aquatic and terrestrial ecotypes.

The microstructure of leaf epidermis, the localization, and content of syringyl (S) and guajacyl (G) monolignol in epidermal cells of Phragmites australis grown in water and moderate drought soil on the bank of the Venetian strait of the Dnipro River in Kiev (Ukraine) were studied with the electron microscopic method and laser confocal microscopy. The trichomes, guard cells of stomata, epidermal cells of vaulted zones over veins of adaxial and abaxial surface contained syringyl and guajacyl, the content of which depended on plant ecotype. We established that moisture soil influenced the leaf epidermis ultrastructure, on the change of monolignols content and S/G ratio in epidermis leaf of reed.