根瘤菌目

根瘤菌目（学名：Rhizobiales）是革兰氏阴性變形菌門中的一个目。

具有会固氮作用和与植物根系共生的根瘤菌出现在几个不同的科中。 四个科中的慢生根瘤菌科，，Phyllobacteriaceae，和根瘤菌科至少含有6个固氮的，豆类结瘤的微生物共生菌。 例子是和根瘤菌属。 Methylocystaceae的种属是; 它们使用甲醇（CH3OH）或甲烷（CH4）作为唯一的能源和碳源。 其他重要属是人类病原体和布鲁氏菌科，以及农杆菌属（遗传工程）。

下级分类
本科包括以下属：

参考资料
延伸閱讀

• Kuykendall, L. D. and Dazzo, F.B. 2005. Allorhizobium. In Brenner, Krieg, Staley and Garrity (Editors), The Alpha-, Beta-, Delta- and Epsilonproteobacteria, The Proteobacteria, Part C, Bergey’s Manual of Systematic Bacteriology, 2nd. Ed., Vol. 2, Springer, New York, NY, pp. 345–346.
• Kuykendall, L. D. 2005 Genus Azorhizobium. In Brenner, Krieg, Staley and Garrity (Editors), The Alpha-, Beta-, Delta- and Epsilonproteobacteria, The Proteobacteria, Part C, Bergey’s Manual of Systematic Bacteriology, 2nd. Ed.,Vol. 2, Springer, New York, NY, pp. 505–506.
• Kuykendall, L.D. 2005. Genus Bradyrhizobium, family Bradyrhizobiaceae. In: Bergey's Manual of Systematic Bacteriology, 2nd Edition, 2nd Volume. George Garrity, (Ed.) Springer–Verlag, New York, NY, pp. 438–443.
• Chen, W. X., E.T. Wang, and L.D. Kuykendall. 2005. Genus Mesorhizobium, Family Photobacteriaceae. In: Bergey's Manual of Systematic Bacteriology, 2nd Edition, 2nd Volume. George Garrity, (Ed.) Springer–Verlag, New York, NY, pp. 403–408.,
• Kuykendall, L.D., J.M. Young, E. Martínez-Romero, A. Kerr, and H. Sawada. 2005. Genus Rhizobium, a highly divergent genus in a revised family, the Rhizobiaceae. In: Bergey's Manual of Systematic Bacteriology, 2nd Edition, 2nd Volume. George Garrity, (Ed.) Springer–Verlag, New York, NY, pp. 324–340.