Freiberg C, Fellay R, Bairoch A, Broughton WJ, Rosen-
thal A, Perret X (1997) Molecular basis of symbiosis
between Rhizobium and legumes. Nature 387
(6631):394– 401
Gagnon H, Ibrahim RK (1998) Aldonic Acids: A Novel
Family of nod Gene Inducers ofMesorhizobium loti,
Rhizobium lupini, andSinorhizobium meliloti. Mol
Plant Microbe Interact 11(10):988– 998
Geremia RA, Mergaert P, Geelen D, Van Montagu M,
Holsters M (1994) The NodC protein ofAzorhizobium
caulinodans is an N-acetylglucosaminyltransferase.
Proc Natl Acad Sci USA 91(7):2669– 2673
Hakoyama T, Niimi K, Watanabe H, Tabata R, Matsubara
J, Sato S, Nakamura Y, Tabata S, Jichun L, Matsum-
oto T, Tatsumi K, Nomura M, Tajima S, Ishizaka M,
Yano K, Imaizumi-Anraku H, Kawaguchi M, Kouchi
H, Suganuma N (2009) Host plant genome overcomes
the lack of a bacterial gene for symbiotic nitrogen
fixation. Nature 462(7272):514– 517
Hashimoto M, Tanishita Y, Suda Y, Murakami E, Nagata
M, Kucho K-I, Abe M, Uchiumi T (2012) Character-
ization of nitric oxide-inducing lipid a derived from
Mesorhizobium loti lipopolysaccharide. Microbes
Environ 27(4):490– 496
Hoover TR, Robertson AD, Cerny RL, Hayes RN,
Imperial J, Shah VK, Ludden PW (1987) Identifica-
tion of the V factor needed for synthesis of the iron-
molybdenum cofactor of nitrogenase as homocitrate.
Nature 329:855– 857
Hotter GS, Scott DB (1991) Exopolysaccharide mutants
ofRhizobium lotiare fully effective on a determinate
nodulating host but are ineffective on an indeterminate
nodulating host. J Bacteriol 173(2):851– 859
Hubber A, Vergunst AC, Sullivan JT, Hooykaas PJJ,
Ronson CW (2004) Symbiotic phenotypes and trans-
located effector proteins of theMesorhizobium loti
strain R7A VirB/D4 type IV secretion system. Mol
Microbiol 54(2):561– 574
Hubber AM, Sullivan JT, Ronson CW (2007) Symbiosis-
induced cascade regulation of theMesorhizobium loti
R7A VirB/D4 Type IV secretion system. Mol Plant
Microbe Interact 20(3):255– 261
Hussain AKMA, Jiang Q, Broughton WJ, Gresshoff PM
(1999)Lotus japonicusnodulates andfixes nitrogen
with the broad host rangeRhizobiumsp. NGR234.
Plant Cell Physiol 40(8):894– 899
Itakura M, Saeki K, Omori H, Yokoyama T, Kaneko T,
Tabata S, Ohwada T, Tajima S, Uchiumi T, Honnma
K, Fujita K, Iwata H, Saeki Y, Hara Y, Ikeda S, Eda S,
Mitsui H, Minamisawa K (2009) Genomic compari-
son ofBradyrhizobium japonicumstrains with differ-
ent symbiotic nitrogen-fixing capabilities and other
Bradyrhizobiaceaemembers. ISME J 3(3):326– 339
Jarvis BDW, Pankhurst CE, Patel JJ (1982)Rhizobium
loti, a New Species of Legume Root Nodule Bacteria.
Int J Syst Bacteriol 32(3):378– 380
Jarvis BDW, Van Berkum P, Chen WX, Nour SM,
Fernandez MP, Cleyet-Marel JC, Gillis M (1997)
Transfer of Rhizobium loti, Rhizobium huakuii,
Rhizobium ciceri, Rhizobium mediterraneum, and
Rhizobium tianshanense to Mesorhizobium gen. nov.
Int J Syst Bacteriol 47(3):895– 898
John M, Rohrig H, Schmidt J, Wieneke U, Schell J (1993)
Rhizobium NodB protein involved in nodulation
signal synthesis is a chitooligosaccharide deacetylase.
Proc Natl Acad Sci USA 90(2):625– 629
Kamst E, van der Drift KM, Thomas-Oates JE, Lugten-
berg BJ, Spaink HP (1995) Mass spectrometric
analysis of chitin oligosaccharides produced byRhi-
zobiumNodC protein inEscherichia coli. J Bacteriol
177(21):6282– 6285
Kaneko T, Nakamura Y, Sato S, Asamizu E, Kato T,
Sasamoto S, Watanabe A, Idesawa K, Ishikawa A,
Kawashima K, Kimura T, Kishida Y, Kiyokawa C,
Kohara M, Matsumoto M, Matsuno A, Mochizuki Y,
Nakayama S, Nakazaki N, Shimpo S, Sugimoto M,
Takeuchi C, Yamada M, Tabata S (2000) Complete
genome structure of the nitrogen-fixing symbiotic
bacteriumMesorhizobium loti. DNA Res 7(6):331– 338
Kasai-Maita H, Hirakawa H, Nakamura Y, Kaneko T,
Miki K, Maruya J, Okazaki S, Tabata S, Saeki K, Sato
S (2013) Commonalities and differences among
symbiosis islands of threeMesorhizobium lotistrains.
Microbes Environ 28(2):275– 278
Kawaharada Y, Eda S, Minamisawa K, Mitsui H (2007)
AMesorhizobium lotimutant with reduced glucan
content shows defective invasion of its host plant
Lotus japonicus. Microbiology 153(12):3983– 3993
Kawaharada Y, Kiyota H, Eda S, Minamisawa K, Mitsui
H (2010) Identification of theMesorhizobium lotigene
responsible for glycerophosphorylation of periplasmic
cyclic β-1,2-glucans. FEMS Microbiol Lett 302
(2):131– 137
Kelly SJ, Muszynski A, Kawaharada Y, Hubber AM,
Sullivan JT, Sandal N, Carlson RW, Stougaard J,
Ronson CW (2013) Conditional requirement for
exopolysaccharide in theMesorhizobium-Lotussym-
biosis. Mol Plant-Microbe Interact MPMI 26
(3):319– 329
Krause A, Doerfel A, Gottfert M (2002) Mutational and
transcriptional analysis of the type III secretion system
ofBradyrhizobium japonicum. Mol Plant-Microbe
Interact MPMI 15(12):1228– 1235
Krishnan HB, Lorio J, Kim WS, Jiang G, Kim KY,
DeBoer M, Pueppke SG (2003) Extracellular proteins
involved in soybean cultivar-specific nodulation are
associated with pilus-like surface appendages and
exported by a type III protein secretion system in
Sinorhizobium frediiUSDA257. Mol Plant Microbe
Interact 16(7):617– 625
Leroux B, Yanofsky MF, Winans SC, Ward JE, Ziegler
SF, Nester EW (1987) Characterization of thevirA
locus ofAgrobacterium tumefaciens: a transcriptional
regulator and host range determinant. EMBO J 6
(4):849– 856
Lopez-Lara IM, van den Berg JD, Thomas-Oates JE,
Glushka J, Lugtenberg BJ, Spaink HP (1995) Struc-
tural identification of the lipo-chitin oligosaccharide
nodulation signals ofRhizobium loti. Mol Microbiol
15(4):627– 6385 Genome Sequence and Gene Functions... 55