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Comprehensive quantification and genome survey reveal the presence of novel phytohormone action modes in red seaweeds

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/66905

Title: Comprehensive quantification and genome survey reveal the presence of novel phytohormone action modes in red seaweeds
Authors: Mikami, Koji Browse this author →KAKEN DB
Mori, Izumi C. Browse this author →KAKEN DB
Matsuura, Takakazu Browse this author →KAKEN DB
Ikeda, Yoko Browse this author
Kojima, Mikiko Browse this author
Sakakibara, Hitoshi Browse this author →KAKEN DB
Hirayama, Takashi Browse this author →KAKEN DB
Keywords: Bangia fuscopurpurea
Liquid chromatography-tandemmass spectrometry
Phytohormone
Pyropia yezoensis
Quantitative profiling
Comparative genomics
Issue Date: Aug-2016
Publisher: Springer
Journal Title: Journal of applied phycology
Volume: 28
Issue: 4
Start Page: 2539
End Page: 2548
Publisher DOI: 10.1007/s10811-015-0759-2
Abstract: Emerging work has suggested the existence of phytohormones in seaweeds, although chemical species, endogenous biosynthetic pathways, and signal transduction machineries remain poorly understood. We performed profiling of nine phytohormones with liquid chromatography-mass spectrometry and in silico genome-wide homology search to identify genes involved in biosynthesis and signal transduction of hormones in red algae. It was demonstrated that two Bangiophycean algae, Bangia fuscopurpurea and Pyropia yezoensis, possessed indoleacetic acid (IAA), N-6-(Delta(2)-isopentenyl) adenine (iP), abscisic acid (ABA), and salicylic acid, although trans-zeatin, dihydrozeatin, gibberellin A(1) and A(4), and jasmonate were not detected. Results of genome-wide survey demonstrated that Bangiophycean algae produce iP and ABA via pathways similar to those in terrestrial plants. However, these seaweeds lack homologues of already known factors participating in perception and signal transduction of IAA, iP, ABA and SA, indicating that the action modes of these phytohormones in red seaweeds differ from those elucidated in terrestrial plants. These findings shed lights on evolutional divergence of signal transduction pathways of phytohormones in plants.
Rights: The final publication is available at link.springer.com
Type: article (author version)
URI: http://hdl.handle.net/2115/66905
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 三上 浩司

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