Plant elicitor peptides promote plant defences against nematodes in soybean

Plant elicitor peptides promote plant defences against nematodes in soybean Plant elicitor peptides (Peps) are widely distributed among angiosperms, and have been shown to amplify immune responses in multiple plant families. Here, we characterize three Peps from soybean (Glycine max) and describe their effects on plant defences against two damaging agricultural pests, the root‐knot nematode (Meloidogyne incognita) and the soybean cyst nematode (Heterodera glycines). Seed treatments with exogenous GmPep1, GmPep2 or GmPep3 significantly reduced the reproduction of both nematodes. Pep treatment also protected plants from the inhibitory effects of root‐knot nematodes on above‐ground growth, and up‐regulated basal expression levels of nematode‐responsive defence genes. GmPep1 induced the expression of its propeptide precursor (GmPROPEP1), a nucleotide‐binding site leucine‐rich repeat protein (NBS‐LRR), a pectin methylesterase inhibitor (PMEI), Respiratory Burst Oxidase Protein D (RBOHD) and the accumulation of reactive oxygen species (ROS) in leaves. In addition, GmPep2 and GmPep3 seed treatments up‐regulated RBOHD expression and ROS accumulation in roots and leaves. These results suggest that GmPeps activate plant defences through systemic transcriptional reprogramming and ROS signalling, and that Pep seed treatments represent a potential strategy for nematode management. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Molecular Plant Pathology Wiley

Plant elicitor peptides promote plant defences against nematodes in soybean

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 BSPP AND JOHN WILEY & SONS LTD
ISSN
1464-6722
eISSN
1364-3703
D.O.I.
10.1111/mpp.12570
Publisher site
See Article on Publisher Site

Abstract

Plant elicitor peptides (Peps) are widely distributed among angiosperms, and have been shown to amplify immune responses in multiple plant families. Here, we characterize three Peps from soybean (Glycine max) and describe their effects on plant defences against two damaging agricultural pests, the root‐knot nematode (Meloidogyne incognita) and the soybean cyst nematode (Heterodera glycines). Seed treatments with exogenous GmPep1, GmPep2 or GmPep3 significantly reduced the reproduction of both nematodes. Pep treatment also protected plants from the inhibitory effects of root‐knot nematodes on above‐ground growth, and up‐regulated basal expression levels of nematode‐responsive defence genes. GmPep1 induced the expression of its propeptide precursor (GmPROPEP1), a nucleotide‐binding site leucine‐rich repeat protein (NBS‐LRR), a pectin methylesterase inhibitor (PMEI), Respiratory Burst Oxidase Protein D (RBOHD) and the accumulation of reactive oxygen species (ROS) in leaves. In addition, GmPep2 and GmPep3 seed treatments up‐regulated RBOHD expression and ROS accumulation in roots and leaves. These results suggest that GmPeps activate plant defences through systemic transcriptional reprogramming and ROS signalling, and that Pep seed treatments represent a potential strategy for nematode management.

Journal

Molecular Plant PathologyWiley

Published: Jan 1, 2018

Keywords: ; ; ; ; ; ;

References

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