Campus Units
Plant Pathology and Microbiology
Document Type
Article
Publication Version
Published Version
Publication Date
2012
Journal or Book Title
Journal of Experimental Botany
Volume
63
Issue
10
First Page
3683
Last Page
3696
DOI
10.1093/jxb/ers058
Abstract
Phytoparasitic nematodes secrete an array of effector proteins to modify selected recipient plant cells into elaborate and essential feeding sites. The biological function of the novel 30C02 effector protein of the soybean cyst nematode, Heterodera glycines, was studied using Arabidopsis thaliana as host and the beet cyst nematode, Heterodera schachtii, which contains a homologue of the 30C02 gene. Expression of Hg30C02 in Arabidopsis did not affect plant growth and development but increased plant susceptibility to infection by H. schachtii. The 30C02 protein interacted with a specific (AT4G16260) host plant β-1,3-endoglucanase in both yeast and plant cells, possibly to interfere with its role as a plant pathogenesis-related protein. Interestingly, the peak expression of 30C02 in the nematode and peak expression of At4g16260 in plant roots coincided at around 3–5 d after root infection by the nematode, after which the relative expression of At4g16260 declined significantly. An Arabidopsis At4g16260 T-DNA mutant showed increased susceptibility to cyst nematode infection, and plants that overexpressed At4g16260 were reduced in nematode susceptibility, suggesting a potential role of host β-1,3-endoglucanase in the defence response against H. schachtii infection. Arabidopsis plants that expressed dsRNA and its processed small interfering RNA complementary to the Hg30C02 sequence were not phenotypically different from non-transformed plants, but they exhibited a strong RNA interference-mediated resistance to infection by H. schachtii. The collective results suggest that, as with other pathogens, active suppression of host defence is a critical component for successful parasitism by nematodes and a vulnerable target to disrupt the parasitic cycle.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial 3.0 License
Copyright Owner
The Authors
Copyright Date
2012
Language
en
File Format
application/pdf
Recommended Citation
Hamamouch, Noureddine; Li, Chunying; Hewezi, Tarek; Baum, Thomas J.; Mitchum, Melissa M.; Hussey, Richard S.; Vodkin, Lila O.; and Davis, Eric L., "The interaction of the novel 30C02 cyst nematode effector protein with a plant β-1,3-endoglucanase may suppress host defence to promote parasitism" (2012). Plant Pathology and Microbiology Publications. 135.
https://lib.dr.iastate.edu/plantpath_pubs/135
Included in
Agricultural Science Commons, Agriculture Commons, Entomology Commons, Genetics and Genomics Commons, Plant Pathology Commons
Comments
This article is published as Hamamouch, Noureddine, Chunying Li, Tarek Hewezi, Thomas J. Baum, Melissa G. Mitchum, Richard S. Hussey, Lila O. Vodkin, and Eric L. Davis. "The interaction of the novel 30C02 cyst nematode effector protein with a plant β-1, 3-endoglucanase may suppress host defence to promote parasitism." Journal of experimental botany 63, no. 10 (2012): 3683-3695, doi: 10.1093/jxb/ers058. Posted with permission.