Proteomic analysis of phytophthora infestans reveals the importance of cell wall proteins in pathogenicity
Resjö, Svante LU ; Brus, Maja ; Ali, Ashfaq LU
; Meijer, Harold J. G.
; Sandin, Marianne
LU
; Govers, Francine
; Levander, Fredrik
LU
; Grenville-Briggs, Laura J.
and Andreasson, Erik
(2017)
In Molecular and Cellular Proteomics
16(11).
p.1958-1971
- Abstract
The oomycete Phytophthora infestans is the most harmful pathogen of potato. It causes the disease late blight, which generates increased yearly costs of up to one billion euro in the EU alone and is difficult to control. We have performed a large-scale quantitative proteomics study of six P. infestans life stages with the aim to identify proteins that change in abundance during development, with a focus on preinfectious life stages. Over 10 000 peptides from 2061 proteins were analyzed. We identified several abundance profiles of proteins that were up- or downregulated in different combinations of life stages. One of these profiles contained 59 proteins that were more abundant in germinated cysts and appressoria. A large majority of... (More)
The oomycete Phytophthora infestans is the most harmful pathogen of potato. It causes the disease late blight, which generates increased yearly costs of up to one billion euro in the EU alone and is difficult to control. We have performed a large-scale quantitative proteomics study of six P. infestans life stages with the aim to identify proteins that change in abundance during development, with a focus on preinfectious life stages. Over 10 000 peptides from 2061 proteins were analyzed. We identified several abundance profiles of proteins that were up- or downregulated in different combinations of life stages. One of these profiles contained 59 proteins that were more abundant in germinated cysts and appressoria. A large majority of these proteins were not previously recognized as being appressorial proteins or involved in the infection process. Among those are proteins with putative roles in transport, amino acid metabolism, pathogenicity (including one RXLR effector) and cell wall structure modification. We analyzed the expression of the genes encoding nine of these proteins using RT-qPCR and found an increase in transcript levels during disease progression, in agreement with the hypothesis that these proteins are important in early infection. Among the nine proteins was a group involved in cell wall structure modification and adhesion, including three closely related, uncharacterized proteins encoded by PITG-01131, PITG-01132, and PITG-16135, here denoted Piacwp1-3. Transient silencing of these genes resulted in reduced severity of infection, indicating that these proteins are important for pathogenicity. Our results contribute to further insight into P. infestans biology, and indicate processes that might be relevant for the pathogen while preparing for host cell penetration and during infection. The mass spectrometry data have been deposited to ProteomeXchange via the PRIDE partner repository with the data set identifier PXD002446.
(Less)
- author
- Resjö, Svante
LU
; Brus, Maja
; Ali, Ashfaq
LU
; Meijer, Harold J. G.
; Sandin, Marianne
LU
; Govers, Francine
; Levander, Fredrik
LU
; Grenville-Briggs, Laura J.
and Andreasson, Erik
- organization
- publishing date
- 2017-11-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Molecular and Cellular Proteomics
- volume
- 16
- issue
- 11
- pages
- 14 pages
- publisher
- American Society for Biochemistry and Molecular Biology
- external identifiers
-
- scopus:85032643073
- wos:000414216800005
- pmid:28935716
- ISSN
- 1535-9476
- DOI
- 10.1074/mcp.M116.065656
- language
- English
- LU publication?
- yes
- id
- 33e826ae-3ce6-4c4f-b1f5-988ef8e27703
- date added to LUP
- 2017-11-10 10:32:45
- date last changed
- 2024-06-11 05:51:40
@article{33e826ae-3ce6-4c4f-b1f5-988ef8e27703,
abstract = {{<p>The oomycete Phytophthora infestans is the most harmful pathogen of potato. It causes the disease late blight, which generates increased yearly costs of up to one billion euro in the EU alone and is difficult to control. We have performed a large-scale quantitative proteomics study of six P. infestans life stages with the aim to identify proteins that change in abundance during development, with a focus on preinfectious life stages. Over 10 000 peptides from 2061 proteins were analyzed. We identified several abundance profiles of proteins that were up- or downregulated in different combinations of life stages. One of these profiles contained 59 proteins that were more abundant in germinated cysts and appressoria. A large majority of these proteins were not previously recognized as being appressorial proteins or involved in the infection process. Among those are proteins with putative roles in transport, amino acid metabolism, pathogenicity (including one RXLR effector) and cell wall structure modification. We analyzed the expression of the genes encoding nine of these proteins using RT-qPCR and found an increase in transcript levels during disease progression, in agreement with the hypothesis that these proteins are important in early infection. Among the nine proteins was a group involved in cell wall structure modification and adhesion, including three closely related, uncharacterized proteins encoded by PITG-01131, PITG-01132, and PITG-16135, here denoted Piacwp1-3. Transient silencing of these genes resulted in reduced severity of infection, indicating that these proteins are important for pathogenicity. Our results contribute to further insight into P. infestans biology, and indicate processes that might be relevant for the pathogen while preparing for host cell penetration and during infection. The mass spectrometry data have been deposited to ProteomeXchange via the PRIDE partner repository with the data set identifier PXD002446.</p>}},
author = {{Resjö, Svante and Brus, Maja and Ali, Ashfaq and Meijer, Harold J. G. and Sandin, Marianne and Govers, Francine and Levander, Fredrik and Grenville-Briggs, Laura J. and Andreasson, Erik}},
issn = {{1535-9476}},
language = {{eng}},
month = {{11}},
number = {{11}},
pages = {{1958--1971}},
publisher = {{American Society for Biochemistry and Molecular Biology}},
series = {{Molecular and Cellular Proteomics}},
title = {{Proteomic analysis of phytophthora infestans reveals the importance of cell wall proteins in pathogenicity}},
url = {{http://dx.doi.org/10.1074/mcp.M116.065656}},
doi = {{10.1074/mcp.M116.065656}},
volume = {{16}},
year = {{2017}},
}