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Front Plant Sci

Title:		Phenotypic Space and Variation of Floral Scent Profiles during Late Flower Development in Antirrhinum
Author(s):		Weiss J; Muhlemann JK; Ruiz-Hernandez V; Dudareva N; Egea-Cortines M;
Address:		"Department of Genetics, Institute of Biotechnology, Universidad Politecnica de Cartagena Cartagena, Spain. Department of Biology, Wake Forest University, Winston-Salem NC, USA. Department of Biochemistry, Purdue University, West Lafayette IN, USA"
Journal Title:		Front Plant Sci
Year:		2016
Volume:		20161221
Issue:
Page Number:		1903 -
DOI:		10.3389/fpls.2016.01903
ISSN/ISBN:		1664-462X (Print) 1664-462X (Electronic) 1664-462X (Linking)
Abstract:		"The genus Antirrhinum comprises about 28 species with a center of origin in the Iberian Peninsula. They show an important diversity of growing niches. We have performed a comprehensive analysis of scent profiles in eight wild species, Antirrhinum linkianum, A. tortuosum, A. cirrigherum, A. latifolium, A. meonanthum, A. braun-blanquetii, A. barrelieri, and A. graniticum. We used also two laboratory inbred lines A. majus, 165E and Sippe50. We identified 63 volatile organic compounds (VOCs) belonging to phenylpropanoids, benzenoids, mono- and sesquiterpenes, nitrogen-containing compounds, and aliphatic alcohols previously described in plants. Twenty-four VOCs were produced at levels higher than 2% of total VOC emission, while other VOCs were emitted in trace amounts. The absolute scent emission varied during flower maturation and species. The lowest emitting was A. meonanthum while A. tortuosum had the largest emissions. Species were clustered according to their scent profiles and the resulting dendrogram matched the current species phylogeny. However, two accessions, A. majus Sippe 50 and A. braun-blanquetii, showed development-specific changes in their VOC composition, suggesting a precise control and fine tuning of scent profiles. Cluster analysis of the different scent components failed to identify a specific synthesis pathway, indicating a key role of scent profiles as blends. There is considerable degree of chemodiversity in scent profiles in Antirrhinum. The specific developmental stage plays an important role in scent quantitative emissions. The relative robustness of the bouquets could be an adaptation to local pollinators"
Keywords:		Antirrhinum anthesis biodiversity chemodiversity floral scent flower development phylogeny;
Notes:		"PubMed-not-MEDLINEWeiss, Julia Muhlemann, Joelle K Ruiz-Hernandez, Victoria Dudareva, Natalia Egea-Cortines, Marcos eng Switzerland 2017/01/10 Front Plant Sci. 2016 Dec 21; 7:1903. doi: 10.3389/fpls.2016.01903. eCollection 2016"