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Carbon allocation, root exudation and mycorrhizal colonization of Pinus echinata seedlings grown under CO2 enrichment
Abstract
Increased exudation of carbon compounds from roots may provide a mechanism for enhancement of nutrient availability to plants growing in a CO(2)-enriched atmosphere. Therefore, the effect of atmospheric CO(2) concentration on carbon allocation and root exudation was investigated in Pinus echinata Mill. (shortleaf pine) seedlings. After 34 and 41 weeks, seedlings growing in 695 microl l(-1) CO(2) allocated proportionately more (14)C-labeled photosynthate to fine roots than did seedlings growing in ambient air. This was associated with greater fine root mass and mycorrhizal density in CO(2)-enriched plants after 34 weeks. Exudation of soluble, (14)C-labeled compounds from roots also was greater in these plants at 34 weeks, but the effect of CO(2) concentration on exudation did not persist at 41 weeks.
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Citations
Cited by
Plant responses to atmospheric CO2 enrichment with emphasis on roots and the rhizosphere
Rogers, H. H., Runion, G. B., & Krupa, S. V. (1994) · Environmental Pollution · doi:10.1016/0269-7491(94)90034-5 · Cited by 731
Tansley Review No. 71 Effects of elevated atmospheric CO2on woody plants
CEULEMANS, R., & MOUSSEAU, M. (1994) · New Phytologist · doi:10.1111/j.1469-8137.1994.tb03961.x · Cited by 707
Carbohydrate sources and sinks in woody plants
Kozlowski, T. T. (1992) · The Botanical Review · doi:10.1007/bf02858600 · Cited by 706
Compant, S., Van Der Heijden, M. G. A., & Sessitsch, A. (2010) · FEMS Microbiology Ecology · doi:10.1111/j.1574-6941.2010.00900.x · Cited by 593
Evidence of a feedback mechanism limiting plant response to elevated carbon dioxide
Díaz, S., Grime, J. P., Harris, J., & McPherson, E. (1993) · Nature · doi:10.1038/364616a0 · Cited by 571
Metadata
- Authors
- Norby, R. J., O'Neill, E. G., Hood, W. G., & Luxmoore, R. J.
- Venue
- Tree Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1987-09-01
- Volume
- 3
- Issue
- 3
- Pages
- 203-210
- ISSN
- 0829-318X (ISSN-L)
- 1758-4469
- OpenAlex
- W2138954811
- Cited by
- 274
- References
- 0
- FWCI
- 4.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Carbon allocation, root exudation and mycorrhizal colonization of Pinus echinata seedlings grown under CO2 enrichment. https://app.cochat.ai/papers/10.1093/treephys/3.3.203
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- Norby, R. J., O'Neill, E. G., Hood, W. G., & Luxmoore, R. J. (1987). Carbon allocation, root exudation and mycorrhizal colonization of Pinus echinata seedlings grown under CO2 enrichment. Tree Physiology. https://doi.org/10.1093/treephys/3.3.203
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