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Rescooped by Xuening Wei from Host-Microbe Interactions. Plant Biology.
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The hijacking of a receptor kinase–driven pathway by a wheat fungal pathogen leads to disease

The hijacking of a receptor kinase–driven pathway by a wheat fungal pathogen leads to disease | wheat | Scoop.it
Necrotrophic pathogens live and feed on dying tissue, but their interactions with plants are not well understood compared to biotrophic pathogens. The wheat Snn1 gene confers susceptibility to strains of the necrotrophic pathogen Parastagonospora nodorum that produce the SnTox1 protein. We report the positional cloning of Snn1 , a member of the wall-associated kinase class of receptors, which are known to drive pathways for biotrophic pathogen resistance. Recognition of SnTox1 by Snn1 activates programmed cell death, which allows this necrotroph to gain nutrients and sporulate. These results demonstrate that necrotrophic pathogens such as P. nodorum hijack host molecular pathways that are typically involved in resistance to biotrophic pathogens, revealing the complex nature of susceptibility and resistance in necrotrophic and biotrophic pathogen interactions with plants.

Via Tatsuya Nobori
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Identification of genes required for nonhost resist... [PLoS One. 2012]

ERF43, participated in nonhost resistance

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ERF43, identified in tobacco, participanted in the nonhost resistance.

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Molecular and spatial constraints on NB... [Curr Opin Plant Biol. 2012] - PubMed - NCBI

R protein review

 

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Current Opinion in Plant Biology - How to build a pathogen detector: structural basis of NB-LRR function

Current Opinion in Plant Biology - How to build a pathogen detector: structural basis of NB-LRR function | wheat | Scoop.it
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review on R protein structure

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Rescooped by Xuening Wei from Rice Blast
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Allele-mining of rice blast resistance genes at AC134922 locus

Allele-mining of rice blast resistance genes at AC134922 locus | wheat | Scoop.it

The AC134922 locus is one of the most rapidly evolving nucleotide binding site–leucine-rich repeat (NBS-LRR) gene family in rice genome. Six rice blast resistance (R) genes have been cloned from this locus and other two resistance candidate genes, Pi34 and Pi47, are also mapped to this complex locus. Therefore, it seems that more functional R genes could be identified from this locus. In this study, we cloned 22 genes from 12 cultivars based on allele-mining strategy at this locus and identified 6 rice blast R genes with 4 of them recognizing more than one isolates. Our result suggests that gene stacking might be the evolutionary strategy for complex gene locus to interact with rapidly evolving pathogens, which might provide a potential way for the cloning of durable resistance genes. Moreover, the mosaic structure and ambiguous ortholog/paralog relationships of these homologous genes, caused by frequent recombination and gene conversion, indicate that multiple alleles of this complex locus may serve as a reservoir for the evolutionary novelty of these R genes.


Via Elsa Ballini
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Genetic and molecular basis of nonhost ... [Curr Opin Plant Biol. 2012] - PubMed - NCBI

review on nonhost resistant

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Current Opinion in Plant Biology - Plant pattern recognition receptor complexes at the plasma membrane

Current Opinion in Plant Biology - Plant pattern recognition receptor complexes at the plasma membrane | wheat | Scoop.it
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review on PRRs

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SOS - too many signals for systemic acquire... [Trends Plant Sci. 2012] - PubMed - NCBI

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