Glycosidases and acid-invertase activities are not correlated with Phaseolus hypocotyl growth

• Autorzy: Bagatharia S B , Chanda S.V.
• Języki publikacji: EN

Abstrakty

EN

Changes in α-galactosidase, β-galactosidase, β-glucosidase and acid invertase activities were examined in Phaseolus vulgaris hypocotyls treated with gibberellic acid (GA), naphthyl acetic acid (NAA) and distilled water (DW) (control) in light condition. The activities were estimated both in cytoplasmic and ionically wall-bound fraction. The upper segment showed considerable elongation growth while there was hardly any growth in lower segment. GA and NAA showed distinct promotion and inhibition respectively in hypocotyl growth in upper segment. The glycosidase activities were detected in both the fractions but the activity was more pronounced in cytoplasmic than in wall fraction. Acid invertase activity was present only in cytoplasmic fraction. In lower segment, in both cytoplasmic and wall fraction, the glycosidase activity, in general, showed a decreasing trend and no effect of treatment could be envisaged. In upper segment, though the trend was similar to the lower one, in α- and β-galactosidase NAA treated segment had more activity. Invertase activity also did not show a clear trend to implicate its function in hypocotyl elongation growth. The results are discussed in relation to establishing a correlation between an activity (glycosidase and invertase) and a physiological process (hypocotyl elongation). It is concluded that these wall-loosening enzymes have no role in elongation growth of Phaseolus vulgaris hypocotyls.

Słowa kluczowe

EN

alpha-galactosidase; beta-glucosidase; acid invertase activity; Phaseolus vulgaris; growth; hypocotyl; glycosidase; beta-galactosidase

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 1998
• Tom: 20
• Numer: 4
• Opis fizyczny: p.431-436,fig.

Twórcy

autor

Bagatharia S B

• Saurashtra University, Rajkot 360 005, India

autor

Chanda S.V.

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