Pectic homogalacturonan sensed by Bacillus acts as host associated cue to promote establishment and persistence in the rhizosphere.

Boubsi, Farah; Hoff, Grégory; Arguelles Arias, Anthony; Steels, Sébastien; Andric, Sofija; Anckaert, Adrien; Roulard, Romain; Rigolet, Augustin; van Wuytswinkel, Olivier; Ongena, Marc

doi:10.1016/j.isci.2023.107925

Article (Scientific journals)

Pectic homogalacturonan sensed by Bacillus acts as host associated cue to promote establishment and persistence in the rhizosphere.

Boubsi, Farah; Hoff, Grégory; Arguelles Arias, Anthony et al.

2023 • In iScience, 26 (10), p. 107925

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/313873

DOI
10.1016/j.isci.2023.107925

PubMed
37790276

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Keywords :

Plant biology; Plant development; Process in plant; Multidisciplinary

Abstract :

[en] Bacillus velezensis isolates are among the most promising plant-associated beneficial bacteria used as biocontrol agents. However, various aspects of the chemical communication between the plant and these beneficials, determining root colonization ability, remain poorly described. Here we investigated the molecular basis of such interkingdom interaction occurring upon contact between Bacillus velezensis and its host via the sensing of pectin backbone homogalacturonan (HG). We showed that B. velezensis stimulates key developmental traits via a dynamic process involving two conserved pectinolytic enzymes. This response integrates transcriptional changes leading to the switch from planktonic to sessile cells, a strong increase in biofilm formation, and an accelerated sporulation dynamics while conserving the potential to efficiently produce specialized secondary metabolites. As a whole, we anticipate that this response of Bacillus to cell wall-derived host cues contributes to its establishment and persistence in the competitive rhizosphere niche and ipso facto to its activity as biocontrol agent.

Disciplines :

Microbiology

Author, co-author :

Boubsi, Farah ; Université de Liège - ULiège > Département GxABT > Microbial technologies

Hoff, Grégory ; Université de Liège - ULiège > Département GxABT > Microbial technologies

Arguelles Arias, Anthony; Microbial Processes and Interactions, TERRA Teaching and Research Center, University of Liège - Gembloux Agro-Bio Tech, 5030 Gembloux, Belgium

Steels, Sébastien ; Université de Liège - ULiège > Département GxABT > Microbial technologies

Andric, Sofija ; Université de Liège - ULiège > Département GxABT > Microbial technologies

Anckaert, Adrien ; Université de Liège - ULiège > TERRA Research Centre

Roulard, Romain; UMRT INRAe 1158 Plant Biology and Innovation, University of Picardie Jules Verne, UFR des Sciences, 80039 Amiens, France

Rigolet, Augustin ; Université de Liège - ULiège > Département GxABT > Microbial technologies

van Wuytswinkel, Olivier; UMRT INRAe 1158 Plant Biology and Innovation, University of Picardie Jules Verne, UFR des Sciences, 80039 Amiens, France

Ongena, Marc ; Université de Liège - ULiège > Département GxABT

Language :

English

Title :

Pectic homogalacturonan sensed by Bacillus acts as host associated cue to promote establishment and persistence in the rhizosphere.

Publication date :

20 October 2023

Journal title :

iScience

eISSN :

2589-0042

Publisher :

Elsevier Inc., United States

Volume :

Issue :

Pages :

107925

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://api.elsevier.com/content/article/PII:S2589004223020023?httpAccept=text/xml

Funding text :

This work was supported by the PDR research project ID 26084552 from the F.R.S.-FNRS (National fund for Scientific Research in Belgium) and by the EOS project ID 30650620 from the FWO/F.R.S.-FNRS. F.B. A.A. and A.R. are recipient of an F.R.I.A. fellowship (F.R.S.-FNRS) and MO is Research Director at the F.R.S.-FNRS. We gratefully acknowledge Emmanuel Petit for providing the oligogalacturonides of high polymerization degree and Catherine Helmus for technical help. F.B. and M.O. conceived, designed, and coordinated the project. F.B. G.H. A.A.A. S.S. S.A. A.A. R.R. A.R. and O.V.W. generated materials, performed experiments, and/or analyzed data. F.B. and M.O. wrote the manuscript. O.V.W. A.A. and G.H. revised the manuscript. O.V.W. and G.H. were involved in the discussion of the work. The authors declare no competing interests.This work was supported by the PDR research project ID 26084552 from the F.R.S.- FNRS ( National fund for Scientific Research in Belgium ) and by the EOS project ID 30650620 from the FWO/F.R.S.- FNRS . F.B., A.A., and A.R. are recipient of an F.R.I.A. fellowship (F.R.S.- FNRS ) and MO is Research Director at the F.R.S.- FNRS . We gratefully acknowledge Emmanuel Petit for providing the oligogalacturonides of high polymerization degree and Catherine Helmus for technical help.

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