Article (Scientific journals)
The cyclic lipopeptide orfamide induces systemic resistance in rice to Cochliobolus miyabeanus but not to Magnaporthe oryzae
Ma, Z.; Ongena, Marc; Höfte, M.
2017In Plant Cell Reports, 36 (11), p. 1731-1746
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Keywords :
Cochliobolus miyabeanus; Induced systemic resistance; Orfamide; Pathogenesis-related proteins; Plant hormones; Pseudomonas protegens CHA0
Abstract :
[en] Key message: ThePseudomonas-derived cyclic lipopeptide orfamide can induce resistance toCochliobolus miyabeanus but not toMagnaporthe oryzae in rice. Abscisic acid signaling is involved in the induced systemic resistance response triggered by orfamide. Abstract: Diverse natural products produced by beneficial Pseudomonas species have the potential to trigger induced systemic resistance (ISR) in plants, and thus may contribute to control of diseases in crops. Some beneficial Pseudomonas spp. can produce cyclic lipopeptides (CLPs), amphiphilic molecules composed of a fatty acid tail linked to an oligopeptide which is cyclized. CLPs can have versatile biological functions, but the capacity of Pseudomonas-derived CLPs in triggering ISR responses has barely been studied. Pseudomonas protegens and related species can produce orfamide-type CLPs. Here we show that in rice, orfamides can act as ISR elicitors against the necrotrophic fungus Cochliobolus miyabeanus, the causal agent of brown spot disease, but are not active against the blast fungus Magnaporthe oryzae. Orfamide A can trigger early defensive events and activate transcripts of defense-related genes in rice cell suspension cultures, but does not cause cell death. Further testing in rice cell suspension cultures and rice plants showed that abscisic acid signaling, the transcriptional activator OsWRKY4 and pathogenesis-related protein PR1b are triggered by orfamide A and may play a role in the ISR response against C. miyabeanus. © 2017, Springer-Verlag GmbH Germany.
Disciplines :
Microbiology
Author, co-author :
Ma, Z.;  Laboratory of Phytopathology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
Ongena, Marc ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Höfte, M.;  Laboratory of Phytopathology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
Language :
English
Title :
The cyclic lipopeptide orfamide induces systemic resistance in rice to Cochliobolus miyabeanus but not to Magnaporthe oryzae
Publication date :
2017
Journal title :
Plant Cell Reports
ISSN :
0721-7714
eISSN :
1432-203X
Publisher :
Springer Verlag
Volume :
36
Issue :
11
Pages :
1731-1746
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 February 2018

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