Facilitation of phosphorus uptake in maize plants by mycorrhizosphere bacteria
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Facilitation of phosphorus uptake in maize plants by mycorrhizosphere bacteria. / Battini, Fabio; Grønlund, Mette; Agnolucci, Monica; Giovannetti, Manuela; Jakobsen, Iver.
In: Scientific Reports, Vol. 7, 4686, 2017.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Facilitation of phosphorus uptake in maize plants by mycorrhizosphere bacteria
AU - Battini, Fabio
AU - Grønlund, Mette
AU - Agnolucci, Monica
AU - Giovannetti, Manuela
AU - Jakobsen, Iver
PY - 2017
Y1 - 2017
N2 - A major challenge for agriculture is to provide sufficient plant nutrients such as phosphorus (P) to meet the global food demand. The sufficiency of P is a concern because of it's essential role in plant growth, the finite availability of P-rock for fertilizer production and the poor plant availability of soil P. This study investigated whether biofertilizers and bioenhancers, such as arbuscular mycorrhizal fungi (AMF) and their associated bacteria could enhance growth and P uptake in maize. Plants were grown with or without mycorrhizas in compartmented pots with radioactive P tracers and were inoculated with each of 10 selected bacteria isolated from AMF spores. Root colonization by AMF produced large plant growth responses, while seven bacterial strains further facilitated root growth and P uptake by promoting the development of AMF extraradical mycelium. Among the tested strains, Streptomyces sp. W94 produced the largest increases in uptake and translocation of (33)P, while Streptomyces sp. W77 highly enhanced hyphal length specific uptake of (33)P. The positive relationship between AMF-mediated P absorption and shoot P content was significantly influenced by the bacteria inoculants and such results emphasize the potential importance of managing both AMF and their microbiota for improving P acquisition by crops.
AB - A major challenge for agriculture is to provide sufficient plant nutrients such as phosphorus (P) to meet the global food demand. The sufficiency of P is a concern because of it's essential role in plant growth, the finite availability of P-rock for fertilizer production and the poor plant availability of soil P. This study investigated whether biofertilizers and bioenhancers, such as arbuscular mycorrhizal fungi (AMF) and their associated bacteria could enhance growth and P uptake in maize. Plants were grown with or without mycorrhizas in compartmented pots with radioactive P tracers and were inoculated with each of 10 selected bacteria isolated from AMF spores. Root colonization by AMF produced large plant growth responses, while seven bacterial strains further facilitated root growth and P uptake by promoting the development of AMF extraradical mycelium. Among the tested strains, Streptomyces sp. W94 produced the largest increases in uptake and translocation of (33)P, while Streptomyces sp. W77 highly enhanced hyphal length specific uptake of (33)P. The positive relationship between AMF-mediated P absorption and shoot P content was significantly influenced by the bacteria inoculants and such results emphasize the potential importance of managing both AMF and their microbiota for improving P acquisition by crops.
KW - Journal Article
U2 - 10.1038/s41598-017-04959-0
DO - 10.1038/s41598-017-04959-0
M3 - Journal article
C2 - 28680077
VL - 7
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 4686
ER -
ID: 180936566