Article (Scientific journals)
Cyclic lipopeptide-producing Pseudomonas koreensis group strains dominate the cocoyam rhizosphere of a Pythium root rot suppressive soil contrasting with P. putida prominence in conducive soils
Oni, F. E.; Geudens, N.; Onyeka, J. T. et al.
2020In Environmental Microbiology
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Abstract :
[en] Pseudomonas isolates from tropical environments have been underexplored and may form an untapped reservoir of interesting secondary metabolites. In this study, we compared Pseudomonas and cyclic lipopeptide (CLP) diversity in the rhizosphere of a cocoyam root rot disease (CRRD) suppressive soil in Boteva, Cameroon with those from four conducive soils in Cameroon and Nigeria. Compared with other soils, Boteva andosols were characterized by high silt, organic matter, nitrogen and calcium. Besides, the cocoyam rhizosphere at Boteva was characterized by strains belonging mainly to the P. koreensis and P. putida (sub)groups, with representations in the P. fluorescens, P. chlororaphis, P. jessenii and P. asplenii (sub)groups. In contrast, P. putida isolates were prominent in conducive soils. Regarding CLP diversity, Boteva was characterized by strains producing 11 different CLP types with cocoyamide A producers, belonging to the P. koreensis group, being the most abundant. However, putisolvin III-V producers were the most dominant in the rhizosphere of conducive soils in both Cameroon and Nigeria. Furthermore, we elucidated the chemical structure of putisolvin derivatives—putisolvin III-V, and described its biosynthetic gene cluster. We show that high Pseudomonas and metabolic diversity may be driven by microbial competition, which likely contributes to soil suppressiveness to CRRD. © 2020 Society for Applied Microbiology and John Wiley & Sons Ltd.
Disciplines :
Microbiology
Author, co-author :
Oni, F. E.;  Phytopathology Laboratory, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium, Unit for Environmental Sciences and Management, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
Geudens, N.;  NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Faculty of Science, Ghent University, Ghent, Belgium
Onyeka, J. T.;  Plant Pathology Unit, National Root Crops Research Institute (NRCRI), Umudike, Abia, Nigeria
Olorunleke, O. F.;  Phytopathology Laboratory, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
Salami, A. E.;  Department of Crop, Horticulture and Landscape Design, Faculty of Agricultural Sciences, Ekiti State University (EKSU), Ado-Ekiti, Nigeria
Omoboye, O. O.;  Phytopathology Laboratory, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium, Department of Microbiology, Faculty of Science, Obafemi Awolowo University, Ile-Ife, Nigeria
Arguelles Arias, Anthony ;  Microbial Processes and Interactions Unit, Faculty of Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
Adiobo, A.;  Institute for Agricultural Research for Development (IRAD), Ekona, Cameroon
De Neve, S.;  Research Group of Soil Fertility and Nutrient Management, Department of Environment, Ghent University, Ghent, Belgium
Ongena, Marc ;  Université de Liège - ULiège > Département GxABT > Microbial, food and biobased technologies
Martins, J. C.;  NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Faculty of Science, Ghent University, Ghent, Belgium
Höfte, M.;  Phytopathology Laboratory, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
Language :
English
Title :
Cyclic lipopeptide-producing Pseudomonas koreensis group strains dominate the cocoyam rhizosphere of a Pythium root rot suppressive soil contrasting with P. putida prominence in conducive soils
Publication date :
2020
Journal title :
Environmental Microbiology
ISSN :
1462-2912
eISSN :
1462-2920
Publisher :
Blackwell Publishing Ltd
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 February 2021

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