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The immunophilin repertoire of Plasmodiophora brassicae and functional analysis of PbCYP3 cyclophilin
K. Singh, G. Tzelepis, M. Zouhar, P. Ryšánek, C. Dixelius,
Language English Country Germany
Document type Journal Article
NLK
ProQuest Central
from 2000-01-01 to 1 year ago
Medline Complete (EBSCOhost)
from 2005-03-01 to 1 year ago
Health & Medicine (ProQuest)
from 2000-01-01 to 1 year ago
- MeSH
- Brassica classification parasitology MeSH
- Cyclophilins classification genetics metabolism MeSH
- Phylogeny MeSH
- Immunophilins genetics metabolism MeSH
- Host-Pathogen Interactions MeSH
- Plant Roots parasitology MeSH
- Plant Diseases parasitology MeSH
- Plasmodiophorida genetics metabolism physiology MeSH
- Protozoan Proteins genetics metabolism MeSH
- Gene Expression Regulation MeSH
- Amino Acid Sequence MeSH
- Sequence Homology, Amino Acid MeSH
- Spores, Protozoan genetics MeSH
- Gene Expression Profiling methods MeSH
- Publication type
- Journal Article MeSH
Plasmodiophora brassicae is a soil-borne pathogen that belongs to Rhizaria, an almost unexplored eukaryotic organism group. This pathogen requires a living host for growth and multiplication, which makes molecular analysis further complicated. To broaden our understanding of a plasmodiophorid such as P. brassicae, we here chose to study immunophilins, a group of proteins known to have various cellular functions, including involvement in plant defense and pathogen virulence. Searches in the P. brassicae genome resulted in 20 putative immunophilins comprising of 11 cyclophilins (CYPs), 7 FK506-binding proteins (FKBPs) and 2 parvulin-like proteins. RNAseq data showed that immunophilins were differentially regulated in enriched life stages such as germinating spores, maturing spores, and plasmodia, and infected Brassica hosts (B. rapa, B. napus and B. oleracea). PbCYP3 was highly induced in all studied life stages and during infection of all three Brassica hosts, and hence was selected for further analysis. PbCYP3 was heterologously expressed in Magnaporthe oryzae gene-inactivated ΔCyp1 strain. The new strain ΔCyp1+ overexpressing PbCYP3 showed increased virulence on rice compared to the ΔCyp1 strain. These results suggest that the predicted immunophilins and particularly PbCYP3 are activated during plant infection. M. oryzae is a well-studied fungal pathogen and could be a valuable tool for future functional studies of P. brassicae genes, particularly elucidating their role during various infection phases.
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- $a Singh, Khushwant $u Department of Plant Biology, Uppsala BioCenter, Linnean Centre for Plant Biology, Swedish University of Agricultural Sciences, P.O Box 7080, 75007, Uppsala, Sweden. Department of Plant Protection, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic. Division of Crop Protection and Plant Health, Crop Research Institute, Drnovska 507, 16106, Prague, Czech Republic.
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- $a The immunophilin repertoire of Plasmodiophora brassicae and functional analysis of PbCYP3 cyclophilin / $c K. Singh, G. Tzelepis, M. Zouhar, P. Ryšánek, C. Dixelius,
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- $a Plasmodiophora brassicae is a soil-borne pathogen that belongs to Rhizaria, an almost unexplored eukaryotic organism group. This pathogen requires a living host for growth and multiplication, which makes molecular analysis further complicated. To broaden our understanding of a plasmodiophorid such as P. brassicae, we here chose to study immunophilins, a group of proteins known to have various cellular functions, including involvement in plant defense and pathogen virulence. Searches in the P. brassicae genome resulted in 20 putative immunophilins comprising of 11 cyclophilins (CYPs), 7 FK506-binding proteins (FKBPs) and 2 parvulin-like proteins. RNAseq data showed that immunophilins were differentially regulated in enriched life stages such as germinating spores, maturing spores, and plasmodia, and infected Brassica hosts (B. rapa, B. napus and B. oleracea). PbCYP3 was highly induced in all studied life stages and during infection of all three Brassica hosts, and hence was selected for further analysis. PbCYP3 was heterologously expressed in Magnaporthe oryzae gene-inactivated ΔCyp1 strain. The new strain ΔCyp1+ overexpressing PbCYP3 showed increased virulence on rice compared to the ΔCyp1 strain. These results suggest that the predicted immunophilins and particularly PbCYP3 are activated during plant infection. M. oryzae is a well-studied fungal pathogen and could be a valuable tool for future functional studies of P. brassicae genes, particularly elucidating their role during various infection phases.
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- $a Tzelepis, Georgios $u Department of Plant Biology, Uppsala BioCenter, Linnean Centre for Plant Biology, Swedish University of Agricultural Sciences, P.O Box 7080, 75007, Uppsala, Sweden. georgios.tzelepis@slu.se.
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