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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erp244
|2 doi
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|a (NLM)19690018
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Klingler, John P
|e verfasserin
|4 aut
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| 245 |
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|a A single gene, AIN, in Medicago truncatula mediates a hypersensitive response to both bluegreen aphid and pea aphid, but confers resistance only to bluegreen aphid
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.02.2010
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|a Date Revised 17.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Biotic stress in plants frequently induces a hypersensitive response (HR). This distinctive reaction has been studied intensively in several pathosystems and has shed light on the biology of defence signalling. Compared with microbial pathogens, relatively little is known about the role of the HR in defence against insects. Reference genotype A17 of Medicago truncatula Gaertn., a model legume, responds to aphids of the genus Acyrthosiphon with necrotic lesions resembling a HR. In this study, the biochemical nature of this response, its mode of inheritance, and its relationship with defence against aphids were investigated. The necrotic lesion phenotype and resistance to the bluegreen aphid (BGA, Acyrthosiphon kondoi Shinji) and the pea aphid (PA, Acyrthosiphon pisum (Harris)) were analysed using reference genotypes A17 and A20, their F(2) progeny and recombinant inbred lines. BGA-induced necrotic lesions co-localized with the production of H(2)O(2), consistent with an oxidative burst widely associated with hypersensitivity. This HR correlated with stronger resistance to BGA in A17 than in A20; these phenotypes cosegregated as a semi-dominant gene, AIN (Acyrthosiphon-induced necrosis). In contrast to BGA, stronger resistance to PA in A17, compared with A20, did not cosegregate with a PA-induced HR. The AIN locus resides in a cluster of sequences predicted to encode the CC-NBS-LRR subfamily of resistance proteins. AIN-mediated resistance presents a novel opportunity to use a model plant and model aphid to study the role of the HR in defence responses to phloem-feeding insects
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|a Journal Article
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|a Plant Proteins
|2 NLM
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1 |
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|a Nair, Ramakrishnan M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Edwards, Owain R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Singh, Karam B
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 60(2009), 14 vom: 21., Seite 4115-27
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|x 1460-2431
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| 773 |
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|g volume:60
|g year:2009
|g number:14
|g day:21
|g pages:4115-27
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|u http://dx.doi.org/10.1093/jxb/erp244
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