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Nematode ascaroside enhances resistance in a broad spectrum of plant–pathogen systems
Author(s) -
Klessig Daniel F.,
Manohar Murli,
Baby Shine,
Koch Aline,
Danquah Wiseborn B.,
Luna Emily,
Park HeeJin,
Kolkman Judith M.,
Turgeon B. Gillian,
Nelson Rebecca,
Leach Jan E.,
Williamson Valerie M.,
Kogel KarlHeinz,
Kachroo Aardra,
Schroeder Frank C.
Publication year - 2019
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/jph.12795
Subject(s) - biology , pathogen , nematode , jasmonic acid , salicylic acid , broad spectrum , innate immune system , systemic acquired resistance , microbiology and biotechnology , plant defense against herbivory , immune system , gene , genetics , ecology , arabidopsis , mutant , combinatorial chemistry , chemistry
Recognition of specific molecule signatures of microbes, including pathogens, induces innate immune responses in plants, as well as in animals. Analogously, a nematode pheromone, the ascaroside ascr#18, induces hallmark plant defences including activation of (a) mitogen‐activated protein kinases, (b) salicylic acid‐ and jasmonic acid‐mediated defence signalling pathways and (c) defence gene expression and provides protection to a broad spectrum of pathogens. Ascr#18 is a member of an evolutionarily conserved family of nematode signalling molecules and is the major ascaroside secreted by plant–parasitic nematodes. Here, we report the effects of ascr#18 on resistance in four of the major economically important crops: maize, rice, wheat and soybean to some of their associated pathogens. Treatment with low nanomolar to low micromolar concentrations of ascr#18 provided from partial to strong protection in seven of eight plant–pathogen systems tested with viruses, bacteria, fungi, oomycetes and nematodes. This research may have potential to improve agricultural sustainability by reducing use of potentially harmful agrochemicals and enhance food security worldwide.