The effect of sodium humate on the content of different types of phosphorus compounds and on the activity of acid phosphatases in tomato seedlings | Zendy

Maria J. Lisiak | Zendy

Open Access

The effect of sodium humate on the content of different types of phosphorus compounds and on the activity of acid phosphatases in tomato seedlings

Author(s) -

Maria J. Lisiak

Publication year - 2014

Publication title -

acta societatis botanicorum poloniae

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.297

H-Index - 29

eISSN - 2083-9480

pISSN - 0001-6977

DOI - 10.5586/asbp.1984.034

Subject(s) - chemistry , phosphorus , phosphate , sodium , acid phosphatase , phosphatase , hydrolysis , humic acid , nucleic acid , phosphorus deficiency , metabolism , biochemistry , enzyme , organic chemistry , fertilizer

The effect of sodium humate on the level of some fractions of phosphorus compounds in the leaves and roots of tomatoes cultured in mediums with a full or reduced phosphorus dose was studied. A dependence was found between the presence of humate in the medium and an increase in the amount of some organic phosphorus compounds in the leaves (lipid phosphorus, easily hydrolyzed phosphorus compounds, nucleic acid phosphorus). In addition, humate lowered the activity of acid phosphatases which had been excessively increased due to the plants inadequate phosphate supply. The results suggest that Na-humate affects phosphorus metabolism not only in an indirect manner, but also directly through penetration of humic substances into the plant tissues

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