Article (Scientific journals)
Biostimulant Effects of Bacillus strains on wheat from in vitro towards field conditions are modulated by nitrogen supply
Nguyen, Minh Luan; Glaes, Johann; Spaepen, Stijn et al.
2019In Journal of Plant Nutrition and Soil Science, 182, p. 325-334
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Keywords :
nutrient uptake; PGPR; spraying inoculation; Triticum aestivum; winter crop
Abstract :
[en] Bacillus velezensisstrains, belonging to plant growth-promoting rhizobacteria (PGPR), areincreasingly used as microbial biostimulant. However, their field application to winter wheatunder temperate climate remains poorly documented. Therefore, threeB. velezensisstrainsIT45, FZB24 and FZB42 were tested for their efficacy under these conditions. Two biological in-teraction systems were firstly developed under gnotobiotic and greenhouse conditions combinedwith sterile or non-sterile soil, respectively, and finally assayed in the field during two yearscoupled with different N fertilization rates. Under gnotobiotic conditions, all three strains signifi-cantly increased root growth of 14 d-old spring and winter wheat seedlings. In the greenhouseusing non-sterile soil, only FZB24 significantly increased root biomass of spring wheat (+31%).The three strains were able to improve nutrient uptake of the spring wheat grown in the green-house, particularly for the micronutrients Fe, Mn, Zn, and Cu, but the observed increases innutrient uptake were dependent on the organs and the elements. The root biomass increases ininoculated plants coincided with lowered nutrient concentrations of P and K. In 2014, under fieldconditions and absence of any N fertilizer supply, FZB24 significantly increased grain yields by983 kg ha–1, or 14.9%, in relation to non-inoculated controls. The three strains in the 2015 fieldtrial failed to confirm the previous positive results, likely due to the low temperatures occurringduring and after inoculations. The Zeleny sedimentation value, indicative of flour quality, wasunaffected by the inoculants. The results are discussed in the perspective of bacterial applicationto wheat under temperate agricultural practices
Research center :
Gembloux Agro-Bio Tech - Terra
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Microbiology
Agriculture & agronomy
Author, co-author :
Nguyen, Minh Luan;  Université de Liège - ULiège
Glaes, Johann;  Université de Liège - ULiège
Spaepen, Stijn;  Katholieke Universiteit Leuven - KUL
Bodson, Bernard ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions végétales et valorisation
du Jardin, Patrick  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions végétales et valorisation
Delaplace, Pierre  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions végétales et valorisation
Language :
English
Title :
Biostimulant Effects of Bacillus strains on wheat from in vitro towards field conditions are modulated by nitrogen supply
Publication date :
2019
Journal title :
Journal of Plant Nutrition and Soil Science
ISSN :
1436-8730
eISSN :
1522-2624
Publisher :
Wiley-VCH, Germany
Volume :
182
Pages :
325-334
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Terra - AgricultureIsLife
Available on ORBi :
since 13 March 2019

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