Mi-1-Mediated Resistance to Meloidogyne incognita in Tomato May Not Rely on Ethylene but Hormone Perception through ETR3 Participates in Limiting Nematode Infection in a Susceptible Host
| Autor: | Teraneh Z. Jhaveri, Sophie Mantelin, Kishor Bhattarai, Isgouhi Kaloshian |
|---|---|
| Přispěvatelé: | van Damme, Els JM |
| Rok vydání: | 2013 |
| Předmět: |
Cyclopropanes
0106 biological sciences Mutant lcsh:Medicine Plant Science Plant Genetics Biochemistry Plant Roots 01 natural sciences Solanum lycopersicum Plant Growth Regulators Gene Expression Regulation Plant Receptors Meloidogyne incognita Plant defense against herbivory 2.1 Biological and endogenous factors Aetiology lcsh:Science Plant Proteins Disease Resistance Genetics Plant Pests 0303 health sciences Multidisciplinary Ecology biology Plant Biochemistry food and beverages Agriculture Infectious Diseases Plant Physiology Gene Knockdown Techniques Cell Surface Infection Terra incognita Research Article Signal Transduction Transcriptional Activation General Science & Technology Plant Cell Biology Plant Pathogens Lyases Crops Receptors Cell Surface Plant disease resistance 03 medical and health sciences Botany Animals Gene family Tylenchoidea Gene Silencing Lycopersicon esculentum Biology Gene Plant Diseases 030304 developmental biology Plant Ecology lcsh:R fungi Plant Plant Pathology Ethylenes biology.organism_classification Gene Expression Regulation lcsh:Q Pest Control Solanum 010606 plant biology & botany |
| Zdroj: | PloS one, vol 8, iss 5 PLoS ONE PLoS ONE, Vol 8, Iss 5, p e63281 (2013) |
| ISSN: | 1932-6203 |
| DOI: | 10.1371/journal.pone.0063281 |
| Popis: | Root-knot nematodes, Meloidogyne spp., are important pests of tomato (Solanum lycopersicum) and resistance to the three most prevalent species of this genus, including Meloidogyne incognita, is mediated by the Mi-1 gene. Mi-1 encodes a nucleotide binding (NB) leucine-rich repeat (LRR) resistance (R) protein. Ethylene (ET) is required for the resistance mediated by a subset of NB-LRR proteins and its role in Mi-1-mediated nematode resistance has not been characterized. Infection of tomato roots with M. incognita differentially induces ET biosynthetic genes in both compatible and incompatible interactions. Analyzing the expression of members of the ET biosynthetic gene families ACC synthase (ACS) and ACC oxidase (ACO), in both compatible and incompatible interactions, shows differences in amplitude and temporal expression of both ACS and ACO genes in these two interactions. Since ET can promote both resistance and susceptibility against microbial pathogens in tomato, we investigated the role of ET in Mi-1-mediated resistance to M. incognita using both genetic and pharmacological approaches. Impairing ET biosynthesis or perception using virus-induced gene silencing (VIGS), the ET-insensitive Never ripe (Nr) mutant, or 1-methylcyclopropene (MCP) treatment, did not attenuate Mi-1-mediated resistance to M. incognita. However, Nr plants compromised in ET perception showed enhanced susceptibility to M. incognita indicating a role for ETR3 in basal resistance to root-knot nematodes. |
| Databáze: | OpenAIRE |
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