Legumes versus rhizobia: a model for ongoing conflict in symbiosis

The New Phytologist
J L SachsCamille E Wendlandt

Abstract

Contents Summary 1199 I. Introduction 1199 II. Selecting beneficial symbionts: one problem, many solutions 1200 III. Control and conflict over legume nodulation 1201 IV. Control and conflict over nodule growth and senescence 1204 V. Conclusion 1204 Acknowledgements 1205 References 1205 SUMMARY: The legume-rhizobia association is a powerful model of the limits of host control over microbes. Legumes regulate the formation of root nodules that house nitrogen-fixing rhizobia and adjust investment into nodule development and growth. However, the range of fitness outcomes in these traits reveals intense conflicts of interest between the partners. New work that we review and synthesize here shows that legumes have evolved varied mechanisms of control over symbionts, but that host control is often subverted by rhizobia. An outcome of this conflict is that both legumes and rhizobia have evolved numerous traits that can improve their own short-term fitness in this interaction, but little evidence exists for any net improvement in the joint trait of nitrogen fixation.

References

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Citations

Sep 12, 2018·Canadian Journal of Microbiology·George C diCenzoAlessio Mengoni
Jul 25, 2019·Evolution; International Journal of Organic Evolution·Liana T BurghardtPeter Tiffin
Jan 5, 2020·Proceedings of the National Academy of Sciences of the United States of America·Yoshikazu ShimodaMakoto Hayashi
Jan 30, 2020·Proceedings. Biological Sciences·Kelsey A Gano-CohenJoel L Sachs
Jun 6, 2019·Pest Management Science·Alessandra GuerrieriHarro J Bouwmeester
Feb 18, 2020·American Journal of Botany·Rebecca T BatstoneMegan E Frederickson
Mar 20, 2019·Ecology Letters·Kelsey A Gano-CohenJoel L Sachs
Aug 11, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Guillaume ChomickiE Toby Kiers
Nov 16, 2019·FEMS Microbiology Letters·Brett S Younginger, Maren L Friesen
Jan 13, 2021·Proceedings. Biological Sciences·Anna M O'BrienMegan E Frederickson
Feb 2, 2021·Evolution; International Journal of Organic Evolution·Kenjiro W QuidesJoel L Sachs
Mar 31, 2021·Evolution; International Journal of Organic Evolution·Lorena Torres-MartínezJoel L Sachs
Apr 8, 2021·Evolution; International Journal of Organic Evolution·Samuel M ScheinerRobert D Holt
Feb 3, 2021·Journal of Bacteriology·Raphael LedermannPhilip S Poole
May 27, 2021·Proceedings. Biological Sciences·Kenjiro W QuidesJoel L Sachs
May 29, 2021·Microbiological Research·Hong-Wei WangChuan-Chao Dai
Jul 29, 2021·Microbial Biotechnology·Laura A Basile, Viviana C Lepek
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Sep 18, 2021·Evolution; International Journal of Organic Evolution·Samuel M ScheinerRobert D Holt
Jul 10, 2021·Annual Review of Cell and Developmental Biology·John P McCutcheon
Jan 12, 2022·Evolution; International Journal of Organic Evolution·Gabriel S Ortiz-BarbosaJoel L Sachs

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