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Cited by 544

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Chloroplast gene sequence data suggest a single origin of the predisposition for symbiotic nitrogen fixation in angiosperms.

Open access
Soltis, D E, Soltis, P S, Morgan, D R, Swensen, S M, Mullin, B C, Dowd, J M, Martin, P G·1995·Proceedings of the National Academy of Sciences

Abstract

Of the approximately 380 families of angiosperms, representatives of only 10 are known to form symbiotic associations with nitrogen-fixing bacteria in root nodules. The morphologically based classification schemes proposed by taxonomists suggest that many of these 10 families of plants are only distantly related, engendering the hypothesis that the capacity to fix nitrogen evolved independently several, if not many, times. This has in turn influenced attitudes toward the likelihood of transferring genes responsible for symbiotic nitrogen fixation to crop species lacking this ability. Phylogenetic analysis of DNA sequences for the chloroplast gene rbcL indicates, however, that representatives of all 10 families with nitrogen-fixing symbioses occur together, with several families lacking this association, in a single clade. This study therefore indicates that only one lineage of closely related taxa achieved the underlying genetic architecture necessary for symbiotic nitrogen fixation in root nodules.

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Metadata

Authors
Soltis, D. E., Soltis, P. S., Morgan, D. R., Swensen, S. M., Mullin, B. C., Dowd, J. M., & Martin, P. G.
Venue
Proceedings of the National Academy of Sciences
Published
1995-03-28
Volume
92
Issue
7
Pages
2647-2651
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2022814224
Cited by
544
References
0
FWCI
26.75
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Chloroplast gene sequence data suggest a single origin of the predisposition for symbiotic nitrogen fixation in angiosperms. https://app.cochat.ai/papers/10.1073/pnas.92.7.2647
The paper
Soltis, D. E., Soltis, P. S., Morgan, D. R., Swensen, S. M., Mullin, B. C., Dowd, J. M., & Martin, P. G. (1995). Chloroplast gene sequence data suggest a single origin of the predisposition for symbiotic nitrogen fixation in angiosperms. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.92.7.2647

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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