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Physiol Plant

Title:		Differential accumulation of volatile terpene and terpene synthase mRNAs during lavender (Lavandula angustifolia and L. x intermedia) inflorescence development
Author(s):		Guitton Y; Nicole F; Moja S; Valot N; Legrand S; Jullien F; Legendre L;
Address:		"Universite de Lyon, F-69003, Lyon, France"
Journal Title:		Physiol Plant
Year:		2010
Volume:		20091023
Issue:		2
Page Number:		150 - 163
DOI:		10.1111/j.1399-3054.2009.01315.x
ISSN/ISBN:		1399-3054 (Electronic) 0031-9317 (Linking)
Abstract:		"Despite the commercial importance of Lavandula angustifolia Mill. and L. x intermedia Emeric ex Loisel floral essential oils (EOs), no information is currently available on potential changes in individual volatile organic compound (VOC) content during inflorescence development. Calyces were found to be the main sites of VOC accumulation. The 20 most abundant VOCs could be separated into three sub-groups according to their patterns of change in concentration The three groups of VOCs sequentially dominated the global scent bouquet of inflorescences, the transition between the first and second groups occurring around the opening of the first flower of the inflorescence and the one between the second and third groups at the start of seed set. Changes in calyx VOC accumulation were linked to the developmental stage of individual flowers. Leaves accumulated a smaller number of VOCs which were a subset of those seen in preflowering inflorescences. Their nature and content remained constant during the growing season. Quantitative real time polymerase chain reaction assessments of the expression of two terpene synthase (TPS) genes, LaLIMS and LaLINS, revealed similar trends between their patterns of expression and those of their VOC products. Molecular and chemical analyses suggest that changes in TPS expression occur during lavender inflorescence development and lead to changes in EO composition. Both molecular data and terpene analysis support the findings that changes in biosynthesis of terpene occurred during inflorescence development"
Keywords:		"Gas Chromatography-Mass Spectrometry Gene Expression Profiling Gene Expression Regulation, Plant Genes, Plant Hydro-Lyases/genetics/*metabolism Inflorescence/*chemistry/enzymology/genetics/growth & development Intramolecular Lyases/genetics/*metabolism La;"
Notes:		"MedlineGuitton, Yann Nicole, Florence Moja, Sandrine Valot, Nadine Legrand, Sylvain Jullien, Frederic Legendre, Laurent eng Research Support, Non-U.S. Gov't Denmark 2009/12/17 Physiol Plant. 2010 Feb; 138(2):150-63. doi: 10.1111/j.1399-3054.2009.01315.x. Epub 2009 Oct 23"