delta-Acetylornithine was found to vary seasonally and in response to
nitrogen availability in the rhizomes of the alpine herb, Bistorta bis
tortoides (Pursh). delta-Acetylornithine accounts for 38% of the free
amino acid pool and up to 12% of the total nitrogen in rhizomes. It is
concluded that this compound plays an important role in nitrogen stor
age in this species.