caa a22 4500 606219471 CHVBK 20210128101118.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11104-014-2246-y doi (NATIONALLICENCE)springer-10.1007/s11104-014-2246-y Phosphorus availability to beans via interactions between mycorrhizas and biochar [Elektronische Daten] [Steven Vanek, Johannes Lehmann] Background and aims: We sought to understand biochar's role in promoting plant phosphorus (P) access via arbuscular mycorrhizas (AM), focusing on whether P solubility and biochar-P proximity altered AM enhancement of P uptake in a mycorrhizal crop legume. Methods: A greenhouse study compared feedstock-derived P with 50mg P pot−1 of sparingly soluble FePO4 (Fe-P) or soluble NaH2PO4 (Na-P) at different proximities to biochar (co-pyrolyzed, mixed with biochar, mixed with soil) on Phaseolus vulgaris P uptake, specific root length (SRL), AM colonization, AM neutral lipids, and microbial biomass-P. Results: Biochar increased AM colonization by 6% (p < 0.01) and increased Fe-P uptake from 3.1 to 3.8mg plant−1, with AM-related Fe-P uptake increased by 12% (p < 0.05). Regardless of proximity, biochar applied with Fe-P was enriched (>2×) with AM hyphae. Biochar-P proximity did not alter P uptake, but shifted uptake towards AM for Fe-P and roots for Na-P. Soluble P located on biochar increased total plant + microbial P (p < 0.05). Biochar reversed (p < 0.05) reductions in SRL induced by AM. Conclusions: Biochar enhanced AM's access to sparingly soluble P, and root/microbial access to soluble P. Biochar augments sparingly soluble P uptake at scales larger than biochar particles, perhaps by reducing P sorption or facilitating root/hyphal exploration. Springer International Publishing Switzerland, 2014 Biochar nationallicence Iron phosphate nationallicence Microbial biomass nationallicence Mycorrhizas nationallicence Phaseolus vulgaris nationallicence Phosphorus fixation nationallicence NLFA nationallicence Rhizosphere nationallicence Vanek Steven Department of Geography, Penn State University, State College, PA, USA aut Lehmann Johannes Department of Crop and Soil Sciences, Cornell University, Ithaca, NY, USA aut Plant and Soil Springer International Publishing 395/1-2(2015-10-01), 105-123 0032-079X 395:1-2<105 2015 395 11104 https://doi.org/10.1007/s11104-014-2246-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-014-2246-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vanek Steven Department of Geography, Penn State University, State College, PA, USA aut NATIONALLICENCE 700 1- Lehmann Johannes Department of Crop and Soil Sciences, Cornell University, Ithaca, NY, USA aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 395/1-2(2015-10-01), 105-123 0032-079X 395:1-2<105 2015 395 11104