Characterization of strigolactones exuded by Asteraceae plants |
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Authors: | Kaori?Yoneyama Xiaonan?Xie Takaya?Kisugi Takahito?Nomura Hitoshi?Sekimoto Takao?Yokota Email author" target="_blank">Koichi?YoneyamaEmail author |
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Institution: | (1) Weed Science Center, Utsunomiya University, 350 Mine-machi, Utsunomiya 321-8505, Japan;(2) Faculty of Agriculture, Utsunomiya University, 350 Mine-machi, Utsunomiya 321-8505, Japan;(3) Department of Biosciences, Faculty of Science and Technology, Teikyo University, 1-1 Toyosato-dai, Utsunomiya 320-8551, Japan; |
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Abstract: | Strigolactones (SLs), originally characterized as germination stimulants for root parasitic weeds, are now recognized as hyphal
branching factors for symbiotic arbuscular mycorrhizal fungi and as a novel class of plant hormones inhibiting shoot branching.
In the present study, SLs in root exudates of 13 Asteraceae plants including crops, a weed, and ornamental plants were characterized.
High performance liquid chromatography/tandem mass spectrometry (LC–MS/MS) analyses revealed that all the Asteraceae plants
examined exuded known SLs and, except for sunflower (Helianthus annuus), high germination stimulant activities at retention times corresponding to these SLs were confirmed. The two major SLs exuded
by these Asteraceae plants were orobanchyl acetate and orobanchol. 5-Deoxystrigol and 7-hydroxyorobanchyl acetate were detected
in root exudates from several Asteraceae species examined in this study. |
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