Hence, plants are highly dependent on mechanisms that allow them to adapt to low‐phosphate stress and/or achieve suitable levels of soluble P on the root surface. Although total soil P level is high, P bioavailability to plants is suboptimal in most soils due to high fixation rates into inorganic and organic insoluble complexes. Phosphorus (P), an essential macronutrient for all living organisms, is required in large amounts for the growth and development of plants. This is not surprising, given that each plant species uses different mechanisms to cope with nutritional deficits and therefore it seems reasonable that different P-transporting, P-solubilising and/or P-mineralising microbes are selected to fit the plant requirements. However, there is no universal plant microbiome response to P stress among different plant species, ranging from none or very subtle impact of P fertilisation on the rhizospheric community (Pantigoso et al., 2020 Sawyer et al., 2019 Widdig et al., 2019) to large shifts in bacterial taxa composition and abundance, as well as microbial interactions (Gomes et al., 2018 Gumiere et al., 2019 Leff et al., 2015 Pantigoso et al., 2018 Silva et al., 2017). (2018) observed that soil P level has more impact on selecting maize root microbiomes under nutrient-limiting conditions than the plant genotype or the plant compartment. Despite the many works addressing the influence of the plant genotype on its associated microbiome (Bulgarelli et al., 2015 Gomes et al., 2018 Liu et al., 2019), Gomes et al. Thus, our results suggest that P fertilization decreases the ability of P–solubilizing microbes to naturally provide P to the plant. Additionally, predictive microbial acid phosphatase activity decreased with increasing levels of decomposition and solubility of mineral P. The rhizosphere microbiome was influenced by P level and differentiated based on low P (0 and 50 kg/ha) and high P (101 and 192 kg/ha) rates. Shifts in microbial community composition and diversity were found in response to P amendment.
Our study explored the effect of P fertilization amendments on soil bacterial community composition in two varieties of commercial blueberry (Vaccinium sp.
Blueberries are sensitive to fertilization hinting to close relationships with beneficial microbes related to soil nutrition. However, it is presently unknown if its application may have detrimental effects on the soil bacterial community. Soil microorganisms play a key role in P cycle and mediating P availability to plants. Phosphorous (P) fertilization is critical to enhance plant P uptake and proper growth.
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