NDLI: Accumulation of hydroxycinnamic acid amides induced by pathogen infection and identification of agmatine coumaroyltransferase in Arabidopsis thaliana

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Induction of multinucleation by β-glucosyl Yariv reagent in regenerated cells from Marchantia polymorpha protoplasts and involvement of arabinogalactan proteins in cell plate formation

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Planta : Volume 230, Issue 2, July 2009

Planta : Volume 230, Issue 1, June 2009

Accumulation of hydroxycinnamic acid amides induced by pathogen infection and identification of agmatine coumaroyltransferase in Arabidopsis thaliana

Content Provider	Springer Nature Link
Author	Muroi, Atsushi Ishihara, Atsushi Tanaka, Chihiro Ishizuka, Akihiro Takabayashi, Junji Miyoshi, Hideto Nishioka, Takaaki
Copyright Year	2009
Abstract	Hydroxycinnamic acid amides (HCAAs) are secondary metabolites involved in the defense of plants against pathogens. Here, we report the first identification of HCAAs, p-coumaroylagmatine, feruloylagmatine, p-coumaroylputrescine and feruloylputrescine, in Arabidopsis thaliana rosette leaves infected with Alternaria brassicicola and the assignment of At5g61160 as the agmatine coumaroyltransferase (AtACT) that catalyzes the last reaction in the biosynthesis of the HCAAs. Feeding experiments with putative labeled precursors revealed that the four HCAAs were synthesized from hydroxycinnamic acids and agmatine or putrescine. AtACT gene function was identified from an analysis of a mutant that did not accumulate HCAAs. In wild-type Arabidopsis, AtACT transcripts markedly increased in response to A. brassicicola infection. Enzymatic activity that catalyzes the synthesis of the HCAAs was confirmed in vitro by using a recombinant AtACT expressed in Escherichia coli. The Atact mutant was susceptible to infection by A. brassicicola, indicating that HCAAs are responsible for defense against pathogens in A. thaliana.
Starting Page	517
Ending Page	527
Page Count	11
File Format	PDF
ISSN	00320935
Journal	Planta
Volume Number	230
Issue Number	3
e-ISSN	14322048
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-06-12
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arabidopsis thaliana Alternaria brassicicola HCAA p-Coumaroylagmatine Agmatine coumaroyltransferase BAHD acyltransferase family Ecology Forestry Agriculture Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science

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Accumulation of hydroxycinnamic acid amides induced by pathogen infection and identification of agmatine coumaroyltransferase in Arabidopsis thaliana

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