Survival trade-offs in plant roots during colonization by closely related beneficial and pathogenic fungi
2016
Hacquard, Stéphane | Kracher, Barbara | Hiruma, Kei | Münch, Philipp C. | Garrido-Oter, Ruben | Thon, Michael R. | Weimann, Aaron | Damm, Ulrike | Dallery, Jean-Félix | Hainaut, Matthieu | Henrissat, Bernard | Lespinet, Olivier | Sacristán, Soledad | Ver Loren van Themaat, Emiel | Kemen, Eric | Mchardy, Alice C. | Schulze-Lefert, Paul | O'Connell, Richard | Department of Plant Microbe Interactions ; Max Planck Institute for Plant Breeding Research (MPIPZ) | Max Von Pettenkofer Institute (MVP) ; Ludwig Maximilian University [Munich] = Ludwig Maximilians Universität München (LMU) | German Center for Infection Research - Partner Site Bonn-Cologne (DZIF) | Computational Biology of Infection Research [Braunschweig] ; Helmholtz Centre for Infection Research (HZI) | Cluster of Excellence on Plant Sciences (CEPLAS) | Algorithmische Bioinformatik [Düsseldorf] ; Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf] | Centro Hispano-Luso de Investigaciones Agrarias, Departamento de Microbiología y Genétic ; Universidad de Salamanca [España] = University of Salamanca [Spain] | Fungal Biodiversity Centre | BIOlogie et GEstion des Risques en agriculture (BIOGER) ; Institut National de la Recherche Agronomique (INRA)-AgroParisTech | Architecture et fonction des macromolécules biologiques (AFMB) ; Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS) | Department of Biological Sciences ; King Abdulazziz University | Laboratoire de Recherche en Informatique (LRI) ; Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS) | BioInformatique Moléculaire (BIM) ; Département Biologie des Génomes (DBG) ; Institut de Biologie Intégrative de la Cellule (I2BC) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) | Centro de Biotechnologia y Genomica de Plantas (UPM-INIA) and ETSI Agronomos ; Universidad Politécnica de Madrid (UPM) | Max Planck Society ; Agence Nationale de la Recherche [ANR-12-CHEX-0008-01] ; 'Cluster of Excellence on Plant Sciences' program - Deutsche Forschungsgemeinschaft ; German Center for Infection Research, DZIF ; Japan Society for the Promotion of Science | European Project: 323094,EC:FP7:ERC,ERC-2012-ADG_20120314,ROOTMICROBIOTA(2013)
International audience
Mostrar más [+] Menos [-]Inglés. The sessile nature of plants forced them to evolve mechanisms to prioritize their responses to simultaneous stresses, including colonization by microbes or nutrient starvation. Here, we compare the genomes of a beneficial root endophyte, Colletotrichum tofieldiae and its pathogenic relative C. incanum, and examine the transcriptomes of both fungi and their plant host Arabidopsis during phosphate starvation. Although the two species diverged only 8.8 million years ago and have similar gene arsenals, we identify genomic signatures indicative of an evolutionary transition from pathogenic to beneficial lifestyles, including a narrowed repertoire of secreted effector proteins, expanded families of chitin-binding and secondary metabolism-related proteins, and limited activation of pathogenicity-related genes in planta. We show that beneficial responses are prioritized in C. tofieldiae-colonized roots under phosphate-deficient conditions, whereas defense responses are activated under phosphate-sufficient conditions. These immune responses are retained in phosphate-starved roots colonized by pathogenic C. incanum, illustrating the ability of plants to maximize survival in response to conflicting stresses.
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