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The streamlined genome of Phytomonas spp. relative to human pathogenic kinetoplastids reveals a parasite tailored for plants

BM. Porcel, F. Denoeud, F. Opperdoes, B. Noel, MA. Madoui, TC. Hammarton, MC. Field, C. Da Silva, A. Couloux, J. Poulain, M. Katinka, K. Jabbari, JM. Aury, DA. Campbell, R. Cintron, NJ. Dickens, R. Docampo, NR. Sturm, VL. Koumandou, S. Fabre, P....

. 2014 ; 10 (2) : e1004007.

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články, Research Support, N.I.H., Extramural, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc15008321

Members of the family Trypanosomatidae infect many organisms, including animals, plants and humans. Plant-infecting trypanosomes are grouped under the single genus Phytomonas, failing to reflect the wide biological and pathological diversity of these protists. While some Phytomonas spp. multiply in the latex of plants, or in fruit or seeds without apparent pathogenicity, others colonize the phloem sap and afflict plants of substantial economic value, including the coffee tree, coconut and oil palms. Plant trypanosomes have not been studied extensively at the genome level, a major gap in understanding and controlling pathogenesis. We describe the genome sequences of two plant trypanosomatids, one pathogenic isolate from a Guianan coconut and one non-symptomatic isolate from Euphorbia collected in France. Although these parasites have extremely distinct pathogenic impacts, very few genes are unique to either, with the vast majority of genes shared by both isolates. Significantly, both Phytomonas spp. genomes consist essentially of single copy genes for the bulk of their metabolic enzymes, whereas other trypanosomatids e.g. Leishmania and Trypanosoma possess multiple paralogous genes or families. Indeed, comparison with other trypanosomatid genomes revealed a highly streamlined genome, encoding for a minimized metabolic system while conserving the major pathways, and with retention of a full complement of endomembrane organelles, but with no evidence for functional complexity. Identification of the metabolic genes of Phytomonas provides opportunities for establishing in vitro culturing of these fastidious parasites and new tools for the control of agricultural plant disease.

Biomedical Research Foundation Academy of Athens Athens Greece

Center for Tropical and Emerging Global Diseases and Department of Cellular Biology University of Georgia Athens Georgia United States of America

Centre de Résonance Magnétique des Systèmes Biologiques Université Bordeaux Segalen CNRS UMR 5536 Bordeaux France

Centre for Immunity Infection and Evolution Institute of Immunology and Infection Research School of Biological Sciences University of Edinburgh Edinburgh United Kingdom

Centre National de Recherche Scientifique UMR 8030 Evry France

CIRAD TA A 98 F Campus International de Baillarguet Montpellier France

Commissariat à l'Energie Atomique Genoscope Evry France

Department of Microbiology Immunology and Molecular Genetics David Geffen School of Medicine University of California at Los Angeles Los Angeles California United States of America

Department of Pathology University of Cambridge Cambridge United Kingdom

e Duve Institute Université catholique de Louvain Brussels Belgium

Faculty of Biology Technion Israel Institute of Technology Haifa Israel

Institute of Infection Immunity and Inflammation College of Medical Veterinary and Life Sciences University of Glasgow Glasgow United Kingdom

Institute of Parasitology Biology Centre and Faculty of Sciences University of South Bohemia České Budějovice Czech Republic

The Mina and Everard Goodman Faculty of Life Sciences Bar Ilan University Ramat Gan Israel

Université d'Evry UMR 8030 Evry France

Wellcome Trust Centre for Molecular Parasitology Institute of Infection Immunity and Inflammation College of Medical Veterinary and Life Sciences University of Glasgow Glasgow United Kingdom

Citace poskytuje Crossref.org

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$a Members of the family Trypanosomatidae infect many organisms, including animals, plants and humans. Plant-infecting trypanosomes are grouped under the single genus Phytomonas, failing to reflect the wide biological and pathological diversity of these protists. While some Phytomonas spp. multiply in the latex of plants, or in fruit or seeds without apparent pathogenicity, others colonize the phloem sap and afflict plants of substantial economic value, including the coffee tree, coconut and oil palms. Plant trypanosomes have not been studied extensively at the genome level, a major gap in understanding and controlling pathogenesis. We describe the genome sequences of two plant trypanosomatids, one pathogenic isolate from a Guianan coconut and one non-symptomatic isolate from Euphorbia collected in France. Although these parasites have extremely distinct pathogenic impacts, very few genes are unique to either, with the vast majority of genes shared by both isolates. Significantly, both Phytomonas spp. genomes consist essentially of single copy genes for the bulk of their metabolic enzymes, whereas other trypanosomatids e.g. Leishmania and Trypanosoma possess multiple paralogous genes or families. Indeed, comparison with other trypanosomatid genomes revealed a highly streamlined genome, encoding for a minimized metabolic system while conserving the major pathways, and with retention of a full complement of endomembrane organelles, but with no evidence for functional complexity. Identification of the metabolic genes of Phytomonas provides opportunities for establishing in vitro culturing of these fastidious parasites and new tools for the control of agricultural plant disease.
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