Changes in free amino acids and guanosine nucleotides in Atriplex canescens (Pursh) during water stress

Cress, W.A.

General Technical Report, Intermountain Forest and Range Experiment Station, USDA Forest Service 172: 116-119


Accession: 001314430

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Water stress of Atriplex canescens seedlings resulted in changes in levels of several nonbound amino acids. Glutamate decreased from 1 mu mol. per gram fresh weight to an undetectable level. Asparagine increased from 16 to 30 mu mol. per gram fresh weight. An overall decrease in guanosine nucleotides of 32 percent was noted. The decrease in glutamate and in guanosine nucleotide contents along with an increase in asparagine content during water stress suggest a cause-effect relationship between the decrease in glutamate and the decrease in polysomes during water stress.