Interspecific and Intersexual Differences in the Chemical Composition of Floral Scent in Glochidion Species Phyllanthaceae in South ChinaReportar como inadecuado




Interspecific and Intersexual Differences in the Chemical Composition of Floral Scent in Glochidion Species Phyllanthaceae in South China - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Journal of Chemistry - Volume 2015 2015, Article ID 865694, 14 pages -

Research Article

College of Life Sciences, Nankai University, Weijin Road 94, Tianjin 300071, China

Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, China

Received 19 August 2015; Revised 14 October 2015; Accepted 15 October 2015

Academic Editor: Hassan Arida

Copyright © 2015 Daihong Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Plants of the Glochidion Phyllanthaceae genus are pollinated exclusively by host-specific Epicephala Gracillariidae moths. Floral scent has been thought to play key role in the obligate pollination mutualism between Glochidion plants and Epicephala moths, but few studies have been reported about chemical variation in floral volatiles of Glochidion species in China. Floral volatiles of male and female flowers of five Glochidion species in south China were collected by dynamic headspace absorption technique and then were chemically analyzed by using gas chromatography-mass spectrometry. A total of 69 compounds were identified from floral scents of five investigated species. Glochidion hirsutum and G. zeylanicum showed no qualitative differences in floral scent, whereas there were clear variations of floral scent among other species G. eriocarpum, G. daltonii, and G. sphaerogynum and also they distinctly differed from these two species. Male flowers emitted significantly more scent than female flowers. Glochidion plants exhibited qualitative and quantitative differences in floral scent between two sexes of flowers. The findings suggest that the volatile variation of floral scent among Glochidion species reflects adaptations to specific pollinators. Sexual dimorphism in floral scent has evolved to signal alternative rewards provided by each sex to Epicephala moths.





Autor: Daihong Huang, Fuchen Shi, Minwei Chai, Ruili Li, and Houhun Li

Fuente: https://www.hindawi.com/



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