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Phytohormones in red seaweeds: a technical review of methods for analysis and a consideration of genomic data

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Title: Phytohormones in red seaweeds: a technical review of methods for analysis and a consideration of genomic data
Authors: Mori, Izumi C. Browse this author →KAKEN DB
Ikeda, Yoko Browse this author
Matsuura, Takakazu Browse this author →KAKEN DB
Hirayama, Takashi Browse this author →KAKEN DB
Mikami, Koji Browse this author →KAKEN DB
Keywords: epiphytes
genome-wide survey
hormone metabolism
liquid chromatography–mass spectrometry
red seaweed
simultaneous analysis
Issue Date: Apr-2017
Journal Title: Botanica Marina
Volume: 60
Issue: 2
Start Page: 153
End Page: 170
Publisher DOI: 10.1515/bot-2016-0056
Abstract: Emerging studies suggest that seaweeds contain phytohormones; however, their chemical entities, biosynthetic pathways, signal transduction mechanisms, and physiological roles are poorly understood. Until recently, it was difficult to conduct comprehensive analysis of phytohormones in seaweeds because of the interfering effects of cellular constituents on fine quantification. In this review, we discuss the details of the latest method allowing simultaneous profiling of multiple phytohormones in red seaweeds, while avoiding the effects of cellular factors. Recent studies have confirmed the presence of indole-3-acetic acid (IAA), N6-(Δ2-isopentenyl)adenine(iP), (+)-abscisic acid (ABA), and salicylic acid, but not of gibberellins and jasmonate, in Pyropia yezoensis and Bangia fuscopurpurea. In addition, an in silico genome-wide homology search indicated that red seaweeds synthesize iP and ABA via pathways similar to those in terrestrial plants, although genes homologous to those involved in IAA biosynthesis in terrestrial plants were not found, suggesting the epiphytic origin of IAA. It is noteworthy that these seaweeds also lack homologues of known factors involved in the perception and signal transduction of IAA, iP, and ABA. Thus, the modes of action of these phytohormones in red seaweeds are unexpectedly dissimilar to those in terrestrial plants.
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Type: article
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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