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Type: Journal article
Title: Distribution of rotundone and possible translocation of related compounds amongst grapevine tissues in vitis vinifera L. cv. shiraz
Author: Zhang, P.
Fuentes, S.
Wang, Y.
Deng, R.
Krstic, M.
Herderich, M.
Barlow, E.
Howell, K.
Citation: Frontiers in Plant Science, 2016; 7:859-1-859-12
Publisher: Frontiers Media
Issue Date: 2016
ISSN: 1664-462X
Statement of
Pangzhen Zhang, Sigfredo Fuentes, Yueying Wang, Rui Deng, Mark Krstic, Markus Herderich, Edward W. R. Barlow and Kate Howell
Abstract: Rotundone is an attractive wine aroma compound, especially important for cool climate Shiraz. Its presence in wine is mainly from the grape skin, but can also be found in non-grape tissues, such as leaves and stems. Whether rotundone is produced independently within different grapevine tissues or transported amongst non-grape tissues and grape berries remains unclear. The current study investigated the distribution of this compound in different vine tissues during development and studied the most likely mode of rotundone translocation-via phloem-using stable isotope feeding. In addition, local production of rotundone induced by herbivore feeding was assessed. Results showed that rotundone was firstly detected in the petioles and peduncles/rachises within the development of Vitis vinifera L. cv. Shiraz. Different grapevine tissues had a similar pattern of rotundone production at different grape developmental stages. In the individual vine shoots, non-grape tissues contained higher concentrations and amounts of rotundone compared to berries, which showed that non-grape tissues were the larger pool of rotundone within the plant. This study confirmed the local production of rotundone in individual tissues and ruled out the possibility of phloem translocation of rotundone between different tissues. In addition, other terpenes, including one monoterpenoid (geraniol) and six sesquiterpenes (clovene, α-ylangene, β-copaene, α-muurolene, δ-cadinene, and cis/trans-calamenene) were, for the first time, detected in the ethylenediaminetetraacetic acid-facilitated petiole phloem exudates, with their originality unconfirmed. Unlike other herbivore-induced terpenes, herbivorous activity had limited influences on the concentration of rotundone in grapevine leaves.
Keywords: herbivore attack
pepper aroma
phloem translocation
secondary metabolite
Rights: © 2016 Zhang, Fuentes, Wang, Deng, Krstic, Herderich, Barlow and Howell. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
DOI: 10.3389/fpls.2016.00859
Appears in Collections:Aurora harvest 8
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