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Conserved nematode signalling molecules elicit plant defenses and pathogen resistance.
- Source :
- Nature communications; vol 6, iss 1, 7795; 2041-1723
- Publication Year :
- 2015
-
Abstract
- Plant-defense responses are triggered by perception of conserved microbe-associated molecular patterns (MAMPs), for example, flagellin or peptidoglycan. However, it remained unknown whether plants can detect conserved molecular patterns derived from plant-parasitic animals, including nematodes. Here we show that several genera of plant-parasitic nematodes produce small molecules called ascarosides, an evolutionarily conserved family of nematode pheromones. Picomolar to micromolar concentrations of ascr#18, the major ascaroside in plant-parasitic nematodes, induce hallmark defense responses including the expression of genes associated with MAMP-triggered immunity, activation of mitogen-activated protein kinases, as well as salicylic acid- and jasmonic acid-mediated defense signalling pathways. Ascr#18 perception increases resistance in Arabidopsis, tomato, potato and barley to viral, bacterial, oomycete, fungal and nematode infections. These results indicate that plants recognize ascarosides as a conserved molecular signature of nematodes. Using small-molecule signals such as ascarosides to activate plant immune responses has potential utility to improve economic and environmental sustainability of agriculture.
Details
- Database :
- OAIster
- Journal :
- Nature communications; vol 6, iss 1, 7795; 2041-1723
- Notes :
- application/pdf, Nature communications vol 6, iss 1, 7795 2041-1723
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1287394534
- Document Type :
- Electronic Resource