Stomatal Guard Cells Are Totipotent.

AUTOR(ES)

Hall, R. D.

RESUMO

It has been successfully demonstrated, using epidermis explants of sugar beet (Beta vulgaris L.), that stomatal guard cells retain full totipotent capacity. Despite having one of the highest degrees of morphological adaptation and a unique physiological specialization, it is possible to induce a re-expression of full (embryogenic) genetic potential in these cells in situ by reversing their highly differentiated nature to produce regenerated plants via a callus stage. The importance of these findings both to stomatal research and to our understanding of cytodifferentiation in plants is discussed.

Documentos Relacionados

• Actin Filaments in Mature Guard Cells Are Radially Distributed and Involved in Stomatal Movement.
• Ca2+ channels at the plasma membrane of stomatal guard cells are activated by hyperpolarization and abscisic acid
• Organic acid and potassium accumulation in guard cells during stomatal opening
• Starch Hydrolysis Induced by Polarized Light in Stomatal Guard Cells of Living Plants
• Changes in cytosolic pH and calcium of guard cells precede stomatal movements.