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Joel Sachs

Posted by | March 13, 2021


Joel Sachs

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Google Scholar Profile



Research Areas:

  • Legume-rhizobia symbiosis

Current N-related Projects:


  1. Pahua, V.J., Stokes, P.J.N., Hollowell, A.C., Regus, J.U., Gano-Cohen, K.A., Wendlandt, C.E., Quides, K.W., Lyu, J. Y., Sachs, J.L.. 2018 Fitness variation among host species and the paradox of ineffective rhizobia Journal of Evolutionary Biology. 31-599-610.
  2. Masson-Boivin, C., Sachs, J.L. 2018 Symbiotic nitrogen fixation by rhizobia – the roots of a success story. Current Opinion in Plant Biology. 44:7-17.
  3. Quides, K.W., Stomackin, G.M., Lee, H-H., Chang, J.H, Sachs, J.L. 2017. Lotus japonicus alters in planta fitness of Mesorhizobium loti dependent on symbiotic nitrogen fixation. PLoS ONE  12(9) e0185568.
  4. Regus, J.U., Quides, K.W., O’Neill, M.R., Suzuki, R., Savory, E.A., Chang, J.H, Sachs, J.L. 2017. Cell autonomous sanctions in legumes target ineffective rhizobia in nodules with mixed infections American Journal of Botany 104: 1-14.
  5. Regus, J.U., Wendlandt, C.E., Bantay, R.M., Gano-Cohen, K.A., Gleason, N.J., Hollowell, A.C.,O’Neill, M.R., Shahin, K.K., Sachs, J.L. 2017. Nitrogen deposition decreases the benefits of symbiosis in a native legume 2016. Plant and Soil. 414: 159-170
  6. Gano-Cohen, K.A., Stokes, P., Blanton, M.A., Wendlandt, C.E., Hollowell, A.C., Regus, J.U., Kim, D., Patel, S., Pahua, V. J., Sachs., J.L. 2016. Non-nodulating Bradyrhizobium spp. modulate the benefits of the legume-rhizobium mutualism  Applied and Environmental Microbiology. 82:5259-5268
  7. Hollowell, A. C., Regus, J. U., Turissini, D., Gano, K. A., Bantay, R., Bernardo, A., Moore, D. Pham, J., Sachs, J. L. 2016. Metapopulation dominance and genomic-island acquisition of Bradyrhizobium with superior catabolic capabilityies. Proceedings of the Royal Society, 283: 20160496.
  8. Hollowell, A. C., Regus, J. U., Gano, K. A., Bantay, R., Centeno, D., Pham, J., Lyu, J.Y., Moore, D. Bernardo, A., Lopez, G., Patil, A., Patel, S., Lii, Y., Sachs, J.L. 2016. Epidemic spread of symbiotic and non–symbiotic Bradyrhizobium genotypes across California Microbial Ecology 71(3) 700-710. DOI 10.1007/s00248-015-0685-5
  9. Mueller U.G., Sachs, J.L. 2015 Engineering microbiomes to improve plant and animal health   Trends in Microbiology.
  10. Regus, J. U., Gano, K. A., Holllowell, A .C.,  V. Sofish, and Sachs, J.L.  2015. Lotus hosts delimit the  mutualism-parasitism continuum of Bradyrhizobium. J. Evol. Biol. 28:447-458.
  11. Ehinger, M., Mohr, T. J., Starcevich, J. B., Sachs, J. L., Porter, S. S., Simms, E. L. 2014 Specialization -generalization trade off in a Bradyrhizobium symbiosis with wild legume hosts BMC Ecology. 14:8
  12. Regus, J. U., Gano, K. A., Hollowell, A. C., Sachs, J. L. 2014. Efficiency of partner choice and sanctions in Lotus is not altered by nitrogen fertilization. Proceedings of the Royal Society of London. 281, 20132587.
  13. Pietrasiak, N, Regus, J. U., Johansen, J. R., Lam, D., Sachs, J. L., Santiago, L. S. 2013. Biological soil crust communities differ in key ecological functions Soil Biology and Biochemistry 65:168-171.
  14. Sachs, J. L. Gano, K. A., Hollowell, A. C., Regus, J. U. The legume-rhizobium symbiosis 2013 Oxford Bibliographies in Ecology.
  15. Kimbrel, J.A., Thomas, W. J., Jiang, Y., Creason, A.L., Thireault, C.A Sachs, J.L.,., Chang, J.H. 2013 Mutualistic coevolution of type III effector genes in Sinorhizobium fredii and Bradyrhizobium japonicum PLoS Pathogens 9: 2, e1003204
  16. Sachs, J.L., Russell, J. E. and Hollowell, A. C. 2011. Evolutionary instability of symbiotic function in Bradyrhizobium. PLoS One 6:11:26370.
  17. Sachs, J.L., Skophammer, R.G., and Regus, J.U. 2011. Evolutionary transitions in bacterial symbiosis. Proceedings of the National Academy of Sciences USA. 108:10800-10807
  18. Sachs, J.L., Russell, J. E., Lii, Y. E., Black, K. C., Lopez, G., and Patil, A. S. 2010. Host control over infection and proliferation of a cheater symbiont. Journal of Evolutionary Biology 23:1919-1927.
  19. Sachs, J.L., Ehinger, E. O., & Simms, E. L. 2010. Origins of cheating and loss of symbiosis in wild Bradyrhizobium. Journal of Evolutionary Biology 23:1075-1089.
  20. Sachs, J.L., Kembel, S.W., Lau, A.H., and Simms, E.L. 2009. In situ phylogenetic structure and diversity of wild Bradyrhizobium communities. Applied & Environmental Microbiology 75: 4727-4735.
  21. Sachs, J.L. and Simms, E.L. 2008. The origins of uncooperative rhizobia. Oikos 117: 961-966
  22. Simms, E. L., Taylor, D. L., Povich, J., Shefferson, R. P., Sachs, J.L., Urbina, M., Tauszick, Y. 2006. An empirical test of partner choice mechanisms in a wild legume-rhizobium interaction. Proceedings of the Royal Society of London. B. B 273:77-81.