Article (Scientific journals)
Efficacy of Bacillus amyloliquefaciens as biocontrol agent to fight fungal diseases of maize under tropical climates: from lab to field assays in south Kivu
Kulimushi, P. Z.; Basime, G. C.; Nachigera, G. M. et al.
2017In Environmental Science and Pollution Research, p. 1-14
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Keywords :
Antifungal activity; Bacillus amyloliquefaciens; Biological control; Cyclic lipopeptides; Maize; South-Kivu
Abstract :
[en] In the province of South Kivu (Democratic Republic of Congo), warm and humid climatic conditions favor the development and spreading of phytopathogens. The resulting diseases cause important losses in production both in crop and after harvest. In this study, we wanted to evaluate the potential of Bacillus amyloliquefaciens as biocontrol agent to fight some newly isolated endemic fungal pathogens infesting maize. The strain S499 has been selected based on its high in vitro antagonistic activity correlating with a huge potential to secrete fungitoxic lipopeptides upon feeding on maize root exudates. Biocontrol activity of S499 was further tested on infected plantlets in growth chamber and on plants grown under field conditions over an entire cropping period. We observed a strong protective effect of this strain evaluated at two different locations with specific agro-ecological conditions. Interestingly, disease protection was associated with higher yields and our data strongly suggest that, in addition to directly inhibit pathogens, the strain may also act as biofertilizer through the solubilization of phosphorus and/or by producing plant growth hormones in the rhizosphere. This work supports the hope of exploiting such technologically advantageous bacilli for the sake of sustainable local production of this important crop in central Africa. © 2017 Springer-Verlag Berlin Heidelberg
Disciplines :
Microbiology
Author, co-author :
Kulimushi, P. Z.;  Microbial Processes and Interactions Laboratory, Faculty Gembloux Agro-BioTech, University of Liège, Passage des Déportés 2, Gembloux, Belgium, Laboratory of Biotechnology and Molecular Biology, Faculty of Agricultural and Environmental Sciences, Université Evangélique en Afrique, Bukavu, Democratic Republic Congo
Basime, G. C.;  Laboratory of Ecophysiology and Plants Nutrition, Faculty of Agricultural and Environmental Sciences, Université Evangélique en Afrique, Bukavu, Democratic Republic Congo
Nachigera, G. M.;  Laboratory of Ecophysiology and Plants Nutrition, Faculty of Agricultural and Environmental Sciences, Université Evangélique en Afrique, Bukavu, Democratic Republic Congo
Thonart, Philippe ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Ongena, Marc ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Language :
English
Title :
Efficacy of Bacillus amyloliquefaciens as biocontrol agent to fight fungal diseases of maize under tropical climates: from lab to field assays in south Kivu
Publication date :
2017
Journal title :
Environmental Science and Pollution Research
ISSN :
0944-1344
eISSN :
1614-7499
Publisher :
Springer Verlag
Pages :
1-14
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 February 2018

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