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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

Deans, BJ ORCID: 0000-0002-3102-0907, Just, J, Tedone, L ORCID: 0000-0002-5252-8865, Kilah, NL ORCID: 0000-0002-0615-3791, Jordan, GJ ORCID: 0000-0002-6033-2766, Bissember, AC ORCID: 0000-0001-5515-2878 and Smith, JA ORCID: 0000-0001-6313-3298 2019 , 'Distinct drimane chemotypes in Tasmanian Mountain Pepper (Tasmannia lanceolata): Differences in the profiles of pungent leaf phytochemicals associated with altitudinal cline' , Journal of Agricultural and Food Chemistry, vol. 68 , 315−322 , doi: 10.1021/acs.jafc.9b05703.

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Abstract

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.

Item Type: Article
Authors/Creators:Deans, BJ and Just, J and Tedone, L and Kilah, NL and Jordan, GJ and Bissember, AC and Smith, JA
Keywords: drimane chemotypes, Tasmanian mountain pepper, pungent leaf phytochemicals, altitudinal cline
Journal or Publication Title: Journal of Agricultural and Food Chemistry
Publisher: Amer Chemical Soc
ISSN: 1520-5118
DOI / ID Number: 10.1021/acs.jafc.9b05703
Copyright Information:

Copyright 2019 American Chemical Society

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