Arabidopsis late blight: infection of a nonhost plant by Albugo laibachii enables full colonization by Phytophthora infestans.
The oomycete pathogen Phytophthora infestans causes potato late blight, and as a potato and tomato specialist pathogen, is seemingly poorly adapted to infect plants outside the Solanaceae. Here, we report the unexpected finding that P. infestans can infect Arabidopsis thaliana when another oomycete pathogen, Albugo laibachii, has colonized the host plant. The behaviour and speed of P. infestans infection in Arabidopsis pre-infected with A. laibachii resemble P. infestans infection of susceptible potato plants. Transcriptional profiling of P. infestans genes during infection revealed a significant overlap in the sets of secreted-protein genes that are induced in P. infestans upon colonization of potato and susceptible Arabidopsis, suggesting major similarities in P. infestans gene expression dynamics on the two plant species. Furthermore, we found haustoria of A. laibachii and P. infestans within the same Arabidopsis cells. This Arabidopsis-A. laibachii-P. infestans tripartite interaction opens up various possibilities to dissect the molecular mechanisms of P. infestans infection and the processes occurring in co-infected Arabidopsis cells.
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.
Khaoula
K
Belhaj
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.|University of Florida, Department of Plant Pathology, Indian River Research and Education Center, Fort Pierce, USA.
Liliana M
LM
Cano
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.|School of Biological Sciences, University of East Anglia, Norwich, United Kingdom.
David C
DC
Prince
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.|Max Planck Institute for Plant Breeding Research, Cologne, Germany.
Ariane
A
Kemen
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.|Organization of Advanced Science and Technology, Kobe University, Kobe, Hyogo, Japan.
Kentaro
K
Yoshida
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.
Yasin F
YF
Dagdas
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.|The Genome Analysis Centre, Norwich Research Park, Norwich, United Kingdom.
Graham J
GJ
Etherington
John Innes Centre, Department of Crop Genetics, Norwich Research Park, Norwich, United Kingdom.
Henk-Jan
HJ
Schoonbeek
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.
H Peter
HP
van Esse
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.
Jonathan D G
JD
Jones
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.
Sophien
S
Kamoun
The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom.|Sainsbury Laboratory, University of Cambridge, Cambridge, United Kingdom.
Sebastian
S
Schornack
D017360:Arabidopsis / Q000382:microbiology*; D020869:Gene Expression Profiling; D054884:Host-Pathogen Interactions; D056265:Microbial Interactions; D009868:Oomycetes / Q000235:genetics / Q000254:growth & development*; D010935:Plant Diseases / Q000382:microbiology*; D011198:Solanum tuberosum / Q000382:microbiology