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The pepper MLO gene, CaMLO2 , is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation

Loss‐of‐function alleles of the mildew resistance locus O () gene provide broad‐spectrum powdery mildew disease resistance. Here, we identified a pepper () gene () that is transcriptionally induced by pv. () infection. Topology and subcellular localization analyses reveal that CaMLO2 is a plasma mem... Full description

Journal Title: Plant Journal December 2012, Vol.72(5), pp.843-855
Main Author: Kim, Dae Sung
Other Authors: Hwang, Byung Kook
Format: Electronic Article Electronic Article
Language:
Subjects:
Pv.
Mlo
ID: ISSN: 0960-7412 ; E-ISSN: 1365-313X ; DOI: 10.1111/tpj.12003
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recordid: wj10.1111/tpj.12003
title: The pepper MLO gene, CaMLO2 , is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation
format: Article
creator:
  • Kim, Dae Sung
  • Hwang, Byung Kook
subjects:
  • Pepper
  • Pv.
  • Mlo
  • Susceptibility Cell Death
  • Arabidopsis
  • Hyaloperonospora Arabidopsidis
ispartof: Plant Journal, December 2012, Vol.72(5), pp.843-855
description: Loss‐of‐function alleles of the mildew resistance locus O () gene provide broad‐spectrum powdery mildew disease resistance. Here, we identified a pepper () gene () that is transcriptionally induced by pv. () infection. Topology and subcellular localization analyses reveal that CaMLO2 is a plasma membrane‐anchored and amphiphilic Ca‐dependent calmodulin‐binding protein. expression is up‐regulated by and salicylic acid, as well as abiotic stresses. Silencing of in pepper plants confers enhanced resistance against virulent , but not against avirulent . This resistance is accompanied by a compromised susceptibility cell‐death response and reduced bacterial growth, as well as an accelerated reactive oxygen species burst. Virulent infection drastically induces expression of the salicylic acid‐dependent defense marker gene in ‐silenced leaves. over‐expression in Arabidopsis enhances susceptibility to pv. and . Leaves of plants over‐expressing exhibit a susceptibility cell‐death response and high bacterial growth during virulent DC3000 infection. These are accompanied by enhanced electrolyte leakage but compromised induction of some defense response genes and the reactive oxygen species. Together, our results suggest that CaMLO2 is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation in pepper and Arabidopsis.
language:
source:
identifier: ISSN: 0960-7412 ; E-ISSN: 1365-313X ; DOI: 10.1111/tpj.12003
fulltext: fulltext
issn:
  • 0960-7412
  • 09607412
  • 1365-313X
  • 1365313X
url: Link


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titleThe pepper MLO gene, CaMLO2 , is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation
creatorKim, Dae Sung ; Hwang, Byung Kook
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subjectPepper ; Pv. ; Mlo ; Susceptibility Cell Death ; Arabidopsis ; Hyaloperonospora Arabidopsidis
descriptionLoss‐of‐function alleles of the mildew resistance locus O () gene provide broad‐spectrum powdery mildew disease resistance. Here, we identified a pepper () gene () that is transcriptionally induced by pv. () infection. Topology and subcellular localization analyses reveal that CaMLO2 is a plasma membrane‐anchored and amphiphilic Ca‐dependent calmodulin‐binding protein. expression is up‐regulated by and salicylic acid, as well as abiotic stresses. Silencing of in pepper plants confers enhanced resistance against virulent , but not against avirulent . This resistance is accompanied by a compromised susceptibility cell‐death response and reduced bacterial growth, as well as an accelerated reactive oxygen species burst. Virulent infection drastically induces expression of the salicylic acid‐dependent defense marker gene in ‐silenced leaves. over‐expression in Arabidopsis enhances susceptibility to pv. and . Leaves of plants over‐expressing exhibit a susceptibility cell‐death response and high bacterial growth during virulent DC3000 infection. These are accompanied by enhanced electrolyte leakage but compromised induction of some defense response genes and the reactive oxygen species. Together, our results suggest that CaMLO2 is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation in pepper and Arabidopsis.
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titleThe pepper MLO gene, CaMLO2 , is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation
descriptionLoss‐of‐function alleles of the mildew resistance locus O () gene provide broad‐spectrum powdery mildew disease resistance. Here, we identified a pepper () gene () that is transcriptionally induced by pv. () infection. Topology and subcellular localization analyses reveal that CaMLO2 is a plasma membrane‐anchored and amphiphilic Ca‐dependent calmodulin‐binding protein. expression is up‐regulated by and salicylic acid, as well as abiotic stresses. Silencing of in pepper plants confers enhanced resistance against virulent , but not against avirulent . This resistance is accompanied by a compromised susceptibility cell‐death response and reduced bacterial growth, as well as an accelerated reactive oxygen species burst. Virulent infection drastically induces expression of the salicylic acid‐dependent defense marker gene in ‐silenced leaves. over‐expression in Arabidopsis enhances susceptibility to pv. and . Leaves of plants over‐expressing exhibit a susceptibility cell‐death response and high bacterial growth during virulent DC3000 infection. These are accompanied by enhanced electrolyte leakage but compromised induction of some defense response genes and the reactive oxygen species. Together, our results suggest that CaMLO2 is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation in pepper and Arabidopsis.
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abstractLoss‐of‐function alleles of the mildew resistance locus O () gene provide broad‐spectrum powdery mildew disease resistance. Here, we identified a pepper () gene () that is transcriptionally induced by pv. () infection. Topology and subcellular localization analyses reveal that CaMLO2 is a plasma membrane‐anchored and amphiphilic Ca‐dependent calmodulin‐binding protein. expression is up‐regulated by and salicylic acid, as well as abiotic stresses. Silencing of in pepper plants confers enhanced resistance against virulent , but not against avirulent . This resistance is accompanied by a compromised susceptibility cell‐death response and reduced bacterial growth, as well as an accelerated reactive oxygen species burst. Virulent infection drastically induces expression of the salicylic acid‐dependent defense marker gene in ‐silenced leaves. over‐expression in Arabidopsis enhances susceptibility to pv. and . Leaves of plants over‐expressing exhibit a susceptibility cell‐death response and high bacterial growth during virulent DC3000 infection. These are accompanied by enhanced electrolyte leakage but compromised induction of some defense response genes and the reactive oxygen species. Together, our results suggest that CaMLO2 is involved in the susceptibility cell‐death response and bacterial and oomycete proliferation in pepper and Arabidopsis.
copOxford, UK
pubBlackwell Publishing Ltd
doi10.1111/tpj.12003
pages843-855
date2012-12