The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.
Carbon availability triggers fungal nitrogen uptake and transport in arbuscular mycorrhizal symbiosis
Open accessAbstract
The arbuscular mycorrhizal (AM) symbiosis, formed between the majority of land plants and ubiquitous soil fungi of the phylum Glomeromycota, is responsible for massive nutrient transfer and global carbon sequestration. AM fungi take up nutrients from the soil and exchange them against photosynthetically fixed carbon (C) from the host. Recent studies have demonstrated that reciprocal reward strategies by plant and fungal partners guarantee a “fair trade” of phosphorus against C between partners [Kiers ET, et al. (2011) Science 333:880–882], but whether a similar reward mechanism also controls nitrogen (N) flux in the AM symbiosis is not known. Using mycorrhizal root organ cultures, we manipulated the C supply to the host and fungus and followed the uptake and transport of N sources in the AM symbiosis, the enzymatic activities of arginase and urease, and fungal gene expression in the extraradical and intraradical mycelium. We found that the C supply of the host plant triggers the uptake and transport of N in the symbiosis, and that the increase in N transport is orchestrated by changes in fungal gene expression. N transport in the symbiosis is stimulated only when the C is delivered by the host across the mycorrhizal interface, not when C is supplied directly to the fungal extraradical mycelium in the form of acetate. These findings support the importance of C flux from the root to the fungus as a key trigger for N uptake and transport and provide insight into the N transport regulation in the AM symbiosis.
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Reciprocal Rewards Stabilize Cooperation in the Mycorrhizal Symbiosis
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Self-citationResource limitation is a driver of local adaptation in mycorrhizal symbioses
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Cited by
Phillips, R. P., Brzostek, E., & Midgley, M. G. (2013) · New Phytologist · doi:10.1111/nph.12221 · Cited by 1,153
Rhizosphere interactions: root exudates, microbes, and microbial communities
Huang, X.-F., Chaparro, J. M., Reardon, K. F., Zhang, R., Shen, Q., & Vivanco, J. M. (2014) · Botany · doi:10.1139/cjb-2013-0225 · Cited by 824
Freschet, G. T., Pagès, L., Iversen, C. M., Comas, L. H., Rewald, B., Roumet, C., Klimešová, J., Zadworny, M., Poorter, H., Postma, J. A., et al. (2021) · New Phytologist · doi:10.1111/nph.17572 · Cited by 668
Arbuscular Mycorrhizal Fungi Increase Organic Carbon Decomposition Under Elevated CO 2
Cheng, L., Booker, F. L., Tu, C., Burkey, K. O., Zhou, L., Shew, H. D., Rufty, T. W., & Hu, S. (2012) · Science · doi:10.1126/science.1224304 · Cited by 522
Biodiversity of arbuscular mycorrhizal fungi and ecosystem function
Powell, J. R., & Rillig, M. C. (2018) · New Phytologist · doi:10.1111/nph.15119 · Cited by 508
Metadata
- Authors
- Fellbaum, C. R., Gachomo, E. W., Beesetty, Y., Choudhari, S., Strahan, G. D., Pfeffer, P. E., Kiers, E. T., & Bücking, H.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2012-01-30
- Volume
- 109
- Issue
- 7
- Pages
- 2666-2671
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2152764989
- Cited by
- 425
- References
- 26
- FWCI
- 34.42
- Type
- journal article
- Language
- en
- Open access
- green
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- Fellbaum, C. R., Gachomo, E. W., Beesetty, Y., Choudhari, S., Strahan, G. D., Pfeffer, P. E., Kiers, E. T., & Bücking, H. (2012). Carbon availability triggers fungal nitrogen uptake and transport in arbuscular mycorrhizal symbiosis. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1118650109
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