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. 1999 Oct;18(2):69-72.
doi: 10.1007/pl00007051.

Biochemical Changes Associated With Brassica juncea Seed Development. IV. Acid and Alkaline Phosphatases

S Saroop  1 , SV Chanda, YD Singh
Affiliations

Biochemical Changes Associated With Brassica juncea Seed Development. IV. Acid and Alkaline Phosphatases

S Saroop et al. J Plant Growth Regul. 1999 Oct.

Abstract

Changes in acid and alkaline phosphatase activities in cytoplasmic and wall-bound fractions of developing mustard (Brassica juncea) seed were studied. Growth was measured by seed dry weight and water content. Seed dry weight data were fitted to a cubic polynomial equation. Seed water content and dry matter accumulation was significantly correlated. Cytoplasmic acid and alkaline phosphatase activities were substantially less in the cytoplasmic fraction than the wall-bound fraction. Wall-bound acid phosphatase activity was low initially, but high levels were maintained after day 25, indicating a relationship with dry matter accumulation. The results suggest that acid phosphatase plays an important role during mustard seed development.

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