TY - JOUR
T1 - Tomato plants rather than fertilizers drive microbial community structure in horticultural growing media
AU - Grunert, Oliver
AU - Robles-Aguilar, Ana A.
AU - Hernandez-Sanabria, Emma
AU - Schrey, Silvia D.
AU - Reheul, Dirk
AU - Van Labeke, Marie-Christine
AU - Vlaeminck, Siegfried E.
AU - Vandekerckhove, Tom G. L.
AU - Mysara, Mohamed
AU - Monsieurs, Pieter
AU - Temperton, Vicky M.
AU - Boon, Nico
AU - Jablonowski, Nicolai D.
N1 - DOAJ ; FTX
PY - 2019
Y1 - 2019
N2 - Synthetic fertilizer production is associated with a high environmental footprint, as compounds typically dissolve rapidly leaching emissions to the atmosphere or surface waters. We tested two recovered nutrients with slower release patterns, as promising alternatives for synthetic fertilizers: struvite and a commercially available organic fertilizer. Using these fertilizers as nitrogen source, we conducted a rhizotron experiment to test their effect on plant performance and nutrient recovery in juvenile tomato plants. Plant performance was significantly improved when organic fertilizer was provided, promoting higher shoot biomass. Since the microbial community influences plant nitrogen availability, we characterized the root-associated microbial community structure and functionality. Analyses revealed distinct root microbial community structure when different fertilizers were supplied. However, plant presence significantly increased the similarity of the microbial community over time, regardless of fertilization. Additionally, the presence of the plant significantly reduced the potential ammonia oxidation rates, implying a possible role of the rhizosheath microbiome or nitrification inhibition by the plant. Our results indicate that nitrifying community members are impacted by the type of fertilizer used, while tomato plants influenced the potential ammonia-oxidizing activity of nitrogen-related rhizospheric microbial communities. These novel insights on interactions between recovered fertilizers, plant and associated microbes can contribute to develop sustainable crop production systems.
AB - Synthetic fertilizer production is associated with a high environmental footprint, as compounds typically dissolve rapidly leaching emissions to the atmosphere or surface waters. We tested two recovered nutrients with slower release patterns, as promising alternatives for synthetic fertilizers: struvite and a commercially available organic fertilizer. Using these fertilizers as nitrogen source, we conducted a rhizotron experiment to test their effect on plant performance and nutrient recovery in juvenile tomato plants. Plant performance was significantly improved when organic fertilizer was provided, promoting higher shoot biomass. Since the microbial community influences plant nitrogen availability, we characterized the root-associated microbial community structure and functionality. Analyses revealed distinct root microbial community structure when different fertilizers were supplied. However, plant presence significantly increased the similarity of the microbial community over time, regardless of fertilization. Additionally, the presence of the plant significantly reduced the potential ammonia oxidation rates, implying a possible role of the rhizosheath microbiome or nitrification inhibition by the plant. Our results indicate that nitrifying community members are impacted by the type of fertilizer used, while tomato plants influenced the potential ammonia-oxidizing activity of nitrogen-related rhizospheric microbial communities. These novel insights on interactions between recovered fertilizers, plant and associated microbes can contribute to develop sustainable crop production systems.
KW - AMMONIA-OXIDIZERS
KW - ORGANIC NITROGEN
KW - WASTE-WATER
KW - SOIL
KW - NITRIFICATION
KW - BACTERIAL
KW - STRUVITE
KW - NITRATE
KW - RHIZOSPHERE
KW - MICROORGANISMS
U2 - 10.1038/s41598-019-45290-0
DO - 10.1038/s41598-019-45290-0
M3 - A1: Web of Science-article
VL - 9
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 9561
ER -