✦ LIBER ✦

Studies of amino-acid metabolism in winter barley

✍ Scribed by S. R. Draper; R. Sylvester-Bradley; D. G. Keith

Publisher: John Wiley and Sons
Year: 1972
Tongue: English
Weight: 461 KB
Volume: 23
Category: Article
ISSN: 0022-5142
DOI: 10.1002/jsfa.2740231113

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

During cold hardening of five varieties of winter barley, increases were observed in the level of total ethanol‐soluble ninhydrin‐reactive substances in leaves. The extent of the increase was dependent on variety. Of the individual amino acids in leaf extracts, those compounds derived biosynthetically from an α‐ketoglutarate, namely proline, glutamine and glutamic acid, showed the largest increases. Analyses of amino acids in xylem exudates suggest that the continued export of organic nitrogen from the roots contributes to the observed accumulation in leaf tissue.

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