Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59, 49-52
Published online 2014-07-10

Mineralization of alanine enantiomers in soil treated with heavy metals and nutrients

Pavel Formánek1, Katty Rosselle2, Adrien Turco2, Klement Rejšek1, Valerie Vranová1

1Ústav geologie a pedologie, Mendelova univerzita v Brně, Zemědělská 3, 613 00 Brno, Česká republika
2University Paul Verlaine Metz, CNRS UMR 7146, IUT Thionville Yutz - Impasse A. Kastler - 57970 Yutz – France

This work deals with the determination of the effect of heavy metals and nutrients applied to the soil on alanine enatiomers mineralization with the main focus on evaluating the effect on L/D alanine respiration rate ratio. This study was initiated because previous research works revealed a change in L/D amino acid respiration under acid- or heavy metal-stress in soil. Generally, D-amino acids artificially supplied to soil are less utilized by microorganisms compared with their L-enantiomers. Stress of soil microorganisms cause decreased discrimination of D-amino acids utilization. Also, previous research showed that an application of fertilizers or combinations of fertilizers may affect the mineralization rate of L-amino acids differently, compared with their D-enantiomers. The results of this study show, that the effect of both heavy metals and nutrients on the L/D ratio was not clear, increasing or decreasing this ratio. Further research is necessary to broaden this study.


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