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Arbuscular mycorrhizal fungi and goethite promote carbon sequestration via hyphal-aggregate mineral interactions. / Peduru Hewa, Jeewani; Luo, Yu; Yu, Guanghui et al.
In: Soil Biology and Biochemistry, Vol. 162, 108417, 01.11.2021.

Research output: Contribution to journalArticlepeer-review

HarvardHarvard

Peduru Hewa, J, Luo, Y, Yu, G, FU, Y, He, X, van Zwieten, L, Liang, C, Kumar , A, He, Y, Kuzyakov, Y, Qin, H, Guggenberger, G & Xu, J 2021, 'Arbuscular mycorrhizal fungi and goethite promote carbon sequestration via hyphal-aggregate mineral interactions', Soil Biology and Biochemistry, vol. 162, 108417. https://doi.org/10.1016/j.soilbio.2021.108417

APA

Peduru Hewa, J., Luo, Y., Yu, G., FU, Y., He, X., van Zwieten, L., Liang, C., Kumar , A., He, Y., Kuzyakov, Y., Qin, H., Guggenberger, G., & Xu, J. (2021). Arbuscular mycorrhizal fungi and goethite promote carbon sequestration via hyphal-aggregate mineral interactions. Soil Biology and Biochemistry, 162, Article 108417. https://doi.org/10.1016/j.soilbio.2021.108417

CBE

Peduru Hewa J, Luo Y, Yu G, FU Y, He X, van Zwieten L, Liang C, Kumar A, He Y, Kuzyakov Y, et al. 2021. Arbuscular mycorrhizal fungi and goethite promote carbon sequestration via hyphal-aggregate mineral interactions. Soil Biology and Biochemistry. 162:Article 108417. https://doi.org/10.1016/j.soilbio.2021.108417

MLA

VancouverVancouver

Peduru Hewa J, Luo Y, Yu G, FU Y, He X, van Zwieten L et al. Arbuscular mycorrhizal fungi and goethite promote carbon sequestration via hyphal-aggregate mineral interactions. Soil Biology and Biochemistry. 2021 Nov 1;162:108417. Epub 2021 Sept 7. doi: 10.1016/j.soilbio.2021.108417

Author

Peduru Hewa, Jeewani ; Luo, Yu ; Yu, Guanghui et al. / Arbuscular mycorrhizal fungi and goethite promote carbon sequestration via hyphal-aggregate mineral interactions. In: Soil Biology and Biochemistry. 2021 ; Vol. 162.

RIS

TY - JOUR

T1 - Arbuscular mycorrhizal fungi and goethite promote carbon sequestration via hyphal-aggregate mineral interactions

AU - Peduru Hewa, Jeewani

AU - Luo, Yu

AU - Yu, Guanghui

AU - FU, Yingyi

AU - He, Xinhua

AU - van Zwieten, Lukas

AU - Liang, Chao

AU - Kumar , Amit

AU - He, Yan

AU - Kuzyakov, Yakov

AU - Qin, Hua

AU - Guggenberger, Georg

AU - Xu, Jianming

PY - 2021/11/1

Y1 - 2021/11/1

N2 - Goethite is known to contribute to the co-precipitation of rhizodeposits and thus benefit carbon (C) sequestration, while arbuscular mycorrhizal fungi (AMF) play significant role in soil organic C (SOC), however, the combined effect is less known. To address this paucity in knowledge, we compared the physicochemical stabilization and microbial mineralization of rhizodeposits from maize (Zea mays L.) and the rhizosphere priming effect (RPE) in soils with a combination of goethite addition and AMF inoculation. Here, we showed that compared to the control: i) Co-amendment of AMF and goethite resulted in a 0.6-fold decrease of rhizodeposit derived CO2, and a 2.8-fold larger allocation of rhizodeposits into macro-aggregates, most likely due to precipitation by goethite and macro-aggregate formation stimulated by AMF hyphae. Analyses using μ-FTIR confirmed the spatial distribution of polysaccharides overlapped with Fe–O minerals within macro-aggregates, supporting the concomitant processes of rhizodeposit stabilization and aggregate formation via hyphal-aggregate mineral interactions; ii) Inoculation with AMF accelerated SOC turnover by increasing the RPE (by 6.1 mg C kg−1 day−1, 74% increase) and rhizodeposit stabilization (by 6.2 mg C kg−1 soil day−1, 47% increase). The larger soil priming effect stimulated by AMF was associated with several genera including Solirubrobacter, Pseudomonas and Talaromyces, suggesting these hyper-symbionts were involved in nutrient acquisition (mining hypothesis). Our results enabled the comparison between rhizodeposit stabilization versus rhizodeposit and SOC mineralization, and highlighted the contributions of both goethite (abiotic contribution) and AMF (biotic contribution) to C accrual in a soil-plant system.

AB - Goethite is known to contribute to the co-precipitation of rhizodeposits and thus benefit carbon (C) sequestration, while arbuscular mycorrhizal fungi (AMF) play significant role in soil organic C (SOC), however, the combined effect is less known. To address this paucity in knowledge, we compared the physicochemical stabilization and microbial mineralization of rhizodeposits from maize (Zea mays L.) and the rhizosphere priming effect (RPE) in soils with a combination of goethite addition and AMF inoculation. Here, we showed that compared to the control: i) Co-amendment of AMF and goethite resulted in a 0.6-fold decrease of rhizodeposit derived CO2, and a 2.8-fold larger allocation of rhizodeposits into macro-aggregates, most likely due to precipitation by goethite and macro-aggregate formation stimulated by AMF hyphae. Analyses using μ-FTIR confirmed the spatial distribution of polysaccharides overlapped with Fe–O minerals within macro-aggregates, supporting the concomitant processes of rhizodeposit stabilization and aggregate formation via hyphal-aggregate mineral interactions; ii) Inoculation with AMF accelerated SOC turnover by increasing the RPE (by 6.1 mg C kg−1 day−1, 74% increase) and rhizodeposit stabilization (by 6.2 mg C kg−1 soil day−1, 47% increase). The larger soil priming effect stimulated by AMF was associated with several genera including Solirubrobacter, Pseudomonas and Talaromyces, suggesting these hyper-symbionts were involved in nutrient acquisition (mining hypothesis). Our results enabled the comparison between rhizodeposit stabilization versus rhizodeposit and SOC mineralization, and highlighted the contributions of both goethite (abiotic contribution) and AMF (biotic contribution) to C accrual in a soil-plant system.

KW - Carbon sequestration AMF Rhizosphere priming effects Rhizodeposition 13C natural abundance Synchrotron-radiation-based spectromicroscopy

U2 - 10.1016/j.soilbio.2021.108417

DO - 10.1016/j.soilbio.2021.108417

M3 - Article

VL - 162

JO - Soil Biology and Biochemistry

JF - Soil Biology and Biochemistry

SN - 0038-0717

M1 - 108417

ER -