Next Article in Journal
Trends in Soil Microbial Inoculants Research: A Science Mapping Approach to Unravel Strengths and Weaknesses of Their Application
Previous Article in Journal
Food System Resilience during COVID-19 Pandemic: The Case of Roman Solidarity Purchasing Groups
Previous Article in Special Issue
Earthworm Inoculation Improves Upland Rice Crop Yield and Other Agrosystem Services in Madagascar
Article

Richness of Rhizosphere Organisms Affects Plant P Nutrition According to P Source and Mobility

1
Eco&Sols, Institut Agro, Univ Montpellier, CIRAD, INRAe, IRD, 34060 Montpellier, France
2
Department of Environmental Sciences, COMSATS, University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
*
Author to whom correspondence should be addressed.
Academic Editors: Stefano Mocali and Ryusuke Hatano
Agriculture 2021, 11(2), 157; https://doi.org/10.3390/agriculture11020157
Received: 5 January 2021 / Revised: 7 February 2021 / Accepted: 13 February 2021 / Published: 16 February 2021
(This article belongs to the Special Issue Thematic of Soil Ecological Functions in Agriculture)
Plants evolve complex interactions with diverse soil mutualist organisms to enhance P mobilization from the soil. These strategies are particularly important when P is poorly available. It is still unclear how the soil P source (e.g., mineral P versus recalcitrant organic P) and its mobility in the soil (high or low) affect soil mutualist biological (ectomycorrhizal fungi, bacteria and bacterial-feeding nematodes) richness—plant P acquisition relationships. Using a set of six microcosm experiments conducted in growth chamber across contrasting P situations, we tested the hypothesis that the relationship between the increasing addition of soil mutualist organisms in the rhizosphere of the plant and plant P acquisition depends on P source and mobility. The highest correlation (R2 = 0.70) between plant P acquisition with soil rhizosphere biological richness was found in a high P-sorbing soil amended with an organic P source. In the five other situations, the relationships became significant either in soil conditions, with or without mineral P addition, or when the P source was supplied as organic P in the absence of soil, although with a low correlation coefficient (0.09 < R2 < 0.15). We thus encourage the systematic and careful consideration of the form and mobility of P in the experimental trials that aim to assess the role of biological complexity on plant P nutrition. View Full-Text
Keywords: soil P status; rhizospheric organisms; bacteria; nematodes; mycorrhizal fungi; biodiversity-function relationships soil P status; rhizospheric organisms; bacteria; nematodes; mycorrhizal fungi; biodiversity-function relationships
Show Figures

Figure 1

  • Supplementary File 1:

    PDF-Document (PDF, 611 KiB)

  • Externally hosted supplementary file 1
    Doi: 10.6084/m9.figshare.13522073
    Link: https://figshare.com/s/fd952019a4cfe4181c6c
    Description: Figure S1. Photography of the root system from an ectomycorrhizal plant extracted from the Petri dish at the end of the experiment (experiment F). The very important development of the mycorrhizal fungus H. cylindrosporum in the soil-bead mixture leads to a strong aggregation of the soil around the roots of pine. Table S1. Untransformed average values (SD) of plant P gain in mg-P per Petri dish according to biological treatments. Plant P gain were calculated by subtracting the mean amount of total P contained in plants at the beginning of each experiment from individual values measured at the end of the experiment. P-value corresponds to significant difference against 0 (Student t test). Table S2. Fitting parameters (R², P-value) for each experiment with linear (additive hypothesis) or polynomial (non-additive hypothesis) models.
MDPI and ACS Style

Trap, J.; Ranoarisoa, P.M.; Irshad, U.; Plassard, C. Richness of Rhizosphere Organisms Affects Plant P Nutrition According to P Source and Mobility. Agriculture 2021, 11, 157. https://doi.org/10.3390/agriculture11020157

AMA Style

Trap J, Ranoarisoa PM, Irshad U, Plassard C. Richness of Rhizosphere Organisms Affects Plant P Nutrition According to P Source and Mobility. Agriculture. 2021; 11(2):157. https://doi.org/10.3390/agriculture11020157

Chicago/Turabian Style

Trap, Jean, Patricia M. Ranoarisoa, Usman Irshad, and Claude Plassard. 2021. "Richness of Rhizosphere Organisms Affects Plant P Nutrition According to P Source and Mobility" Agriculture 11, no. 2: 157. https://doi.org/10.3390/agriculture11020157

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop