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Paranoid potato : phytophthora-resistant genotype shows constitutively activated defense

Ali, Ashfaq LU orcid ; Moushib, Laith Ibrahim LU ; Lenman, Marit LU ; Levander, Fredrik LU ; Olsson, Kerstin ; Carlson-Nilson, Ulrika ; Zoteyeva, Nadezhda ; Liljeroth, Erland and Andreasson, Erik LU (2012) In Plant Signaling and Behavior 7(3). p.400-408
Abstract

Phytophthora is the most devastating pathogen of dicot plants. There is a need for resistance sources with different modes of action to counteract the fast evolution of this pathogen. In order to better understand mechanisms of defense against P. infestans, we analyzed several clones of potato. Two of the genotypes tested, Sarpo Mira and SW93-1015, exhibited strong resistance against P. infestans in field trials, whole plant assays and detached leaf assays. The resistant genotypes developed different sizes of hypersensitive response (HR)-related lesions. HR lesions in SW93-1015 were restricted to very small areas, whereas those in Sarpo Mira were similar to those in Solanum demissum, the main source of classical resistance genes.... (More)

Phytophthora is the most devastating pathogen of dicot plants. There is a need for resistance sources with different modes of action to counteract the fast evolution of this pathogen. In order to better understand mechanisms of defense against P. infestans, we analyzed several clones of potato. Two of the genotypes tested, Sarpo Mira and SW93-1015, exhibited strong resistance against P. infestans in field trials, whole plant assays and detached leaf assays. The resistant genotypes developed different sizes of hypersensitive response (HR)-related lesions. HR lesions in SW93-1015 were restricted to very small areas, whereas those in Sarpo Mira were similar to those in Solanum demissum, the main source of classical resistance genes. SW93-1015 can be characterized as a cpr (constitutive expressor of PR genes) genotype without spontaneous microscopic or macroscopic HR lesions. This is indicated by constitutive hydrogen peroxide (H₂O₂) production and PR1 (pathogenesis-related protein 1) secretion. SW93-1015 is one of the first plants identified as having classical protein-based induced defense expressed constitutively without any obvious metabolic costs or spontaneous cell death lesions.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Gene Expression Regulation, Plant/genetics, Genotype, Phytophthora/pathogenicity, Plant Diseases/genetics, Solanum tuberosum/genetics
in
Plant Signaling and Behavior
volume
7
issue
3
pages
400 - 408
publisher
Landes Bioscience
external identifiers
  • pmid:22476463
  • scopus:85052278014
ISSN
1559-2316
DOI
10.4161/psb.19149
language
English
LU publication?
yes
id
9f6d692b-c2d3-4a66-bf9d-cb5d2f779899
date added to LUP
2020-03-30 16:07:41
date last changed
2024-02-16 13:35:54
@article{9f6d692b-c2d3-4a66-bf9d-cb5d2f779899,
  abstract     = {{<p>Phytophthora is the most devastating pathogen of dicot plants. There is a need for resistance sources with different modes of action to counteract the fast evolution of this pathogen. In order to better understand mechanisms of defense against P. infestans, we analyzed several clones of potato. Two of the genotypes tested, Sarpo Mira and SW93-1015, exhibited strong resistance against P. infestans in field trials, whole plant assays and detached leaf assays. The resistant genotypes developed different sizes of hypersensitive response (HR)-related lesions. HR lesions in SW93-1015 were restricted to very small areas, whereas those in Sarpo Mira were similar to those in Solanum demissum, the main source of classical resistance genes. SW93-1015 can be characterized as a cpr (constitutive expressor of PR genes) genotype without spontaneous microscopic or macroscopic HR lesions. This is indicated by constitutive hydrogen peroxide (H₂O₂) production and PR1 (pathogenesis-related protein 1) secretion. SW93-1015 is one of the first plants identified as having classical protein-based induced defense expressed constitutively without any obvious metabolic costs or spontaneous cell death lesions.</p>}},
  author       = {{Ali, Ashfaq and Moushib, Laith Ibrahim and Lenman, Marit and Levander, Fredrik and Olsson, Kerstin and Carlson-Nilson, Ulrika and Zoteyeva, Nadezhda and Liljeroth, Erland and Andreasson, Erik}},
  issn         = {{1559-2316}},
  keywords     = {{Gene Expression Regulation, Plant/genetics; Genotype; Phytophthora/pathogenicity; Plant Diseases/genetics; Solanum tuberosum/genetics}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{400--408}},
  publisher    = {{Landes Bioscience}},
  series       = {{Plant Signaling and Behavior}},
  title        = {{Paranoid potato : phytophthora-resistant genotype shows constitutively activated defense}},
  url          = {{http://dx.doi.org/10.4161/psb.19149}},
  doi          = {{10.4161/psb.19149}},
  volume       = {{7}},
  year         = {{2012}},
}