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Annals of Botany 61: 289-292, 1988
© 1988 Annals of Botany Company

RESEARCH-ARTICLE

The Stimulation of Acid Phosphatase Activity in the Stalked Gland of Drosera rotundifolia

SHEILA F. MCNALLY1, ANNE STEWART1 and UNA E. WILSON2

1 School of Botany, Trinity College Dublin 2, Ireland
2 Department of Plant Pathology, University College Belfield, Dublin 4, Ireland

Accepted: 12 October 1987   

Localization of acid phosphatases (phosphomonoesterases II EC 3.1.3.2 [EC] ) was studied in the secretory cells of stalked gland tissue of Drosera rotundifolia L. using a modified Gomori procedure with p-nitrophenol phosphate (pNP) as substrate. In unstimulated and 24 h stimulated tissue, some acid phosphatase activity was localized in vacuoles, cell wall regions and cuticular pores of only a few cells. Following stimulation for either 48, 72 or 96 h, acid phosphatase activity was additionally observed in most gland cells within the nuclear envelope, endoplasmic reticulum and dictyosome cisternae and their associated vesicles, suggesting a de novo synthesis of acid phosphatases.

Acid phosphatase, cytochemistry, Drosera rotundifolia, secretory cells


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