Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(3), 55-58 | DOI: 10.11118/actaun201159030055
Proportion of root-derived acid phosphomonoesterase in total soil acid phosphomonoesterase in different forests
- Ústav geologie a pedologie, Mendelova univerzita v Brně, Zemědělská 3, 613 00 Brno, Česká republika
Enzyme acid phosphomonoesterase (APM) plays an important role in phosphorus mineralization in different type of terrestrial ecosystems. This enzyme is of great agronomic significance because it hydrolyses organic phosphorus to different forms of inorganic phosphorus which are assimilable by plants. APM may also indicate changes in the quantity and quality of phosphorylated substrates in soil and is a good indicator of its biological state as well as presence of pollutants. APM may be produced by plant roots and soil microorganisms and both of these sources may play different role in phosphorus mineralization in different ecosystems. The aim of this work was determine acid phosphomonoesterase (APM) activity location in soil of different forest ecosystems. The APM activity location determination was performed on the basis of root-derived and soil-derived APM and expression of proportion of those root-derived in total soil APM up to 13 cm depth. The results of this preliminary study showed that root-derived APM formed 21-34 % of total soil APM in pine and oak forest.
Keywords: acid phosphomonoesterase, soil, forests, roots
Grants and funding:
The study was supported by the Grant MSM6215648902/Forest and Wood: the support of functionally integrated forest management and use of wood as a renewable raw material phase 4/2/2, part II "The management strategy of nature conservation areas", and by project "Extension of current knowledge on bioavailable amino acids in soil and their utilization by soil microorganisms and plant roots" (IGA FFWT MENDELU No. 47/2010-2012).
Received: January 13, 2011; Published: June 14, 2014 Show citation
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