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Journal Articles Nature Communications Year : 2016

Survival trade-offs in plant roots during colonization by closely related beneficial and pathogenic fungi

Stéphane Hacquard
  • Function : Author
Barbara Kracher
  • Function : Author
Kei Hiruma
  • Function : Author
Philipp Münch
  • Function : Author
Ruben Garrido-Oter
  • Function : Author
Michael Thon
Aaron Weimann
  • Function : Author
Ulrike Damm
  • Function : Author
Jean-Félix Dallery
  • Function : Author
Matthieu Hainaut
  • Function : Author
Bernard Henrissat
  • Function : Author
Soledad Sacristán
  • Function : Author
Emiel Ver Loren van Themaat
  • Function : Author
Eric Kemen
  • Function : Author
Alice Mchardy
  • Function : Author
Paul Schulze-Lefert
  • Function : Author
Richard O'Connell

Abstract

Abstract 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.

Dates and versions

hal-04011139 , version 1 (02-03-2023)

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Stéphane Hacquard, Barbara Kracher, Kei Hiruma, Philipp Münch, Ruben Garrido-Oter, et al.. Survival trade-offs in plant roots during colonization by closely related beneficial and pathogenic fungi. Nature Communications, 2016, 7 (1), pp.11362. ⟨10.1038/ncomms11362⟩. ⟨hal-04011139⟩
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