Uptake of glycine by field grown wheat. Näsholm, T., Huss-Danell, K., & Högberg, P. New Phytologist, 150(1):59–63, 2001. _eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00072.x![Uptake of glycine by field grown wheat [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex • Uptake of glycine, a simple organic nitrogen (N) source, directly from the soil is shown here in a conventionally cropped wheat ( Triticum aestivum ) field. • Wheat plants were harvested after tracer injections into the soil of two forms of dual-labelled amino acid; [ 13C2], [15N]-glycine and 2-[13C], [15N]-glycine. Uptake of intact amino acid was analysed by stable isotope–, and gas chromatography–, mass spectrometry. • Significant increases in 13 C were found in root extracts for all glycine-treated plants. Regression analysis of excess 13 C vs excess 15 N for the two glycine forms showed that at least 20% of absorbed glycine-N was derived from uptake of intact glycine. Gas chromatography–mass spectrometry was used to verify the presence of intact dual-labelled glycine in wheat roots. Results also indicated that glycine decarboxylase had a minor role in metabolism of absorbed glycine in wheat roots. Microbial metabolism in the soil did, however, result in rapid decarboxylation of added glycine. • Field-grown wheat takes up glycine directly from the soil; the dependence of agricultural plants on nitrate and ammonium as the only forms of available N is therefore questionable.
@article{nasholm_uptake_2001,
title = {Uptake of glycine by field grown wheat},
volume = {150},
issn = {1469-8137},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1469-8137.2001.00072.x},
doi = {10/bvc8j6},
abstract = {• Uptake of glycine, a simple organic nitrogen (N) source, directly from the soil is shown here in a conventionally cropped wheat ( Triticum aestivum ) field. • Wheat plants were harvested after tracer injections into the soil of two forms of dual-labelled amino acid; [ 13C2], [15N]-glycine and 2-[13C], [15N]-glycine. Uptake of intact amino acid was analysed by stable isotope–, and gas chromatography–, mass spectrometry. • Significant increases in 13 C were found in root extracts for all glycine-treated plants. Regression analysis of excess 13 C vs excess 15 N for the two glycine forms showed that at least 20\% of absorbed glycine-N was derived from uptake of intact glycine. Gas chromatography–mass spectrometry was used to verify the presence of intact dual-labelled glycine in wheat roots. Results also indicated that glycine decarboxylase had a minor role in metabolism of absorbed glycine in wheat roots. Microbial metabolism in the soil did, however, result in rapid decarboxylation of added glycine. • Field-grown wheat takes up glycine directly from the soil; the dependence of agricultural plants on nitrate and ammonium as the only forms of available N is therefore questionable.},
language = {en},
number = {1},
urldate = {2021-11-02},
journal = {New Phytologist},
author = {Näsholm, Torgny and Huss-Danell, Kerstin and Högberg, Peter},
year = {2001},
note = {\_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00072.x},
keywords = {13C, 15N-glycine, GC-MS, amino acid uptake, ammonium, nitrate, wheat (Triticum aestivum)},
pages = {59--63},
}
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