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Distinct drimane chemotypes in Tasmanian Mountain Pepper (Tasmannia lanceolata): Differences in the profiles of pungent leaf phytochemicals associated with altitudinal cline

This study assesses whether the distinct altitudinal cline in leaf morphology (decreased leaf width and length with increased altitude) in Tasmanian mountain pepper (Tasmannia lanceolata) is associated with changes in the leaf chemistry of wild populations from different ecological landscapes and altitudes. The presence of distinct pungent drimane sesquiterpenoid chemotypes was identified: subalpine woodland and wet sclerophyll forest chemotypes. Isolation studies and analysis of extracts revealed that wet sclerophyll forest T. lanceolata populations featured polygodial as the principal terpenoid, with profiles similar to the commercial cultivars sampled. In contrast, the subalpine woodland populations contained the drimane sesquiterpenoids 1β-acetoxy-9-deoxyisomuzigadial and 3β-acetoxydrimenin and the conspicuous absence of the pungent principle polygodial.

History

Publication title

Journal of Agricultural and Food Chemistry

Volume

68

Pagination

315−322

ISSN

1520-5118

Department/School

School of Natural Sciences

Publisher

Amer Chemical Soc

Place of publication

United States

Rights statement

Copyright 2019 American Chemical Society

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

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