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Influence of Glutamic Acid Enantiomers on C‐mineralization
Author(s) -
Formánek Pavel,
Vranová Valerie,
Lojková Lea
Publication year - 2015
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.22396
Subject(s) - chemistry , enantiomer , glutamic acid , mineralization (soil science) , stereochemistry , organic chemistry , biochemistry , amino acid , nitrogen
Seasonal dynamics in the mineralization of glutamic acid enantiomers in soils from selected ecosystems was determined and subjected to a range of treatments: ambient x elevated CO 2 level and meadow x dense x thinned forest environment. Mineralization of glutamic acid was determined by incubation of the soil with 2 mg L‐ or D‐glutamic acid g ‐1 of dry soil to induce the maximum respiration rate. Mineralization of glutamic acid enantiomers in soils fluctuates over the course of a vegetation season, following a similar trend across a range of ecosystems. Mineralization is affected by environmental changes and management practices, including elevated CO 2 level and thinning intensity. L‐glutamic acid metabolism is more dependent on soil type as compared to metabolism of its D‐enantiomer. The results support the hypothesis that the slower rate of D‐ compared to L‐ amino acid mineralization is due to different roles in anabolism and catabolism of the soil microbial community. Chirality 27:104–108, 2015 . © 2014 Wiley Periodicals, Inc.