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Most plants extend their zone of interaction with surrounding soils and plants via mycorrhizal hyphae, which in some cases can form common mycorrhizal networks with hyphal continuity to other radial plants. These interactions can impact plant health and ecosystem function, yet the role of these radial plants in mycorrhizal interactions and subseque...
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... on above-and below-ground carbon ux Plants grown in static cores had a signicantly lower (18.2% less on average) gross ecosystem exchange (GEE) compared to those in rotated cores (Table 5, Fig. 4), indicating greater xation of carbon by plants in static cores. Radial plant community did not inuence GEE. In addition, rotation of the mesh core surrounding the plant signicantly reduced the total amount of carbon exudated by plant roots by 24.2% on average (Table 5, Fig. 4). No signicant impact of radial plants on the total amount ...
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... ecosystem exchange (GEE) compared to those in rotated cores (Table 5, Fig. 4), indicating greater xation of carbon by plants in static cores. Radial plant community did not inuence GEE. In addition, rotation of the mesh core surrounding the plant signicantly reduced the total amount of carbon exudated by plant roots by 24.2% on average (Table 5, Fig. 4). No signicant impact of radial plants on the total amount of carbon exudated by plant roots was detected. There was a signicant correlation between GEE and the total amount of carbon in root exudates with biomass (Fig. 4). When both effects were scaled by aboveground biomass, they were no longer signicant (Table S1, Fig. S3). There was ...
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... core surrounding the plant signicantly reduced the total amount of carbon exudated by plant roots by 24.2% on average (Table 5, Fig. 4). No signicant impact of radial plants on the total amount of carbon exudated by plant roots was detected. There was a signicant correlation between GEE and the total amount of carbon in root exudates with biomass (Fig. 4). When both effects were scaled by aboveground biomass, they were no longer signicant (Table S1, Fig. S3). There was no signicant impact on soil respiration (Fig S4). Table 5 The effect of radial plant community (radial) and core rotation (rotation) on the total amount of carbon exudated and gross ecosystem exchange (GEE) of Plantago ...
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... both effects were scaled by aboveground biomass, they were no longer signicant (Table S1, Fig. S3). There was no signicant impact on soil respiration (Fig S4). Table 5 The effect of radial plant community (radial) and core rotation (rotation) on the total amount of carbon exudated and gross ecosystem exchange (GEE) of Plantago lanceolata. ...
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... may be due to the additional carbon sink from the connected mycorrhizal hyphae, that in turns stimulates leaf growth to supply additional carbon ( Kaschuk et al. 2009). This theory is in-line with our hypothesis that mycorrhiza would stimulate carbon absorption and release below-ground as root exudates and was conrmed by our experimental results (Fig. 4). Other literature also supports that disconnection from mycorrhizal hyphae reduces plant photosynthetic rate ( Gavito et al. 2019). These ndings has implications for the role that AM fungi play in terrestrial carbon cycling ( Hawkins et al. ...
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... is linked to increased carbon in root exudation. This nding therefore connects above-ground and belowground effects of mycorrhizal symbiosis that have been reported separately ( Xu et al. 2023). We observed a strong positive correlation between leaf biomass and both above-ground carbon capture and below-ground carbon release as root exudation (Fig. 4). This suggests that the effect is mediated by an increase in photosynthetic tissue as opposed to some metabolic shift. Nevertheless, the observed enhancements in photosynthesis and below-ground carbon allocation may be constrained in environments where mycorrhizal networks cannot provide sucient resources to support increased biomass. ...
