TABLE 1.

Methylobacterium isolates obtained from the plant phyllosphere^a

Species (based on 16S rRNA gene sequence)a	Strain	Sequence to which the 16S rRNA gene sequence is identical	Isolation source	ARISA pattern (length[s] of detected fragments [bp])b
M. radiotolerans	F2	F2	A. thaliana	621, 695
M. radiotolerans	F9	F2	A. thaliana	629
M. radiotolerans	F12	F2	A. thaliana	603, 617, 695
M. radiotolerans	F23	F2	A. thaliana	603, 683
M. radiotolerans	F47	F47	A. thaliana	603, 617, 639, 652, 696
M. thiocyanatum	F53	F33	R. pseudoacacia	593, 608
M. thiocyanatum	F18	F33	A. thaliana	605
M. thiocyanatum	F33	F33	A. thaliana	592, 606
M. thiocyanatum	F19	F33	A. thaliana	589, 611
M. thiocyanatum	F34	F33	A. thaliana	592, 606
“M. goesingense”c	F36	F36	P. reptans	616
M. aminovorans	F13	F13	A. thaliana	588
M. extorquens	F46	F46	A. thaliana	602
M. mesophilicum	F42	F42	H. annuus	641
M. oryzaed	F48	F48	A. thaliana	638
Methylobacteriumsp.	F15	F15	A. thaliana	639
Methylobacteriumsp.	F1	F1	A. thaliana	627
Methylobacterium sp.	F14	F1	A. thaliana	628
Methylobacterium sp.	F35	F1	P. reptans	700
Methylobacterium sp.	F37	F1	P. reptans	698
Methylobacterium sp.	F41	F1	P. reptans	629
Methylobacteriumsp.	F38	F38	P. reptans	628
Methylobacterium sp.	F39	F38	P. reptans	630
Methylobacterium sp.	F40	F38	P. reptans	629
Methylobacteriumsp.	F50	F50	A. thaliana	632
Methylobacterium sp.	F51	F50	A. thaliana	633

^aBold type indicates strains that are representative of all strains with identical partial 16S rRNA gene sequences.

^bDue to methodological variation, slight differences (±2 bp) in the fragment length are possible. Thus, isolates may have identical ARISA patterns even if the lengths of the fragments in the patterns are slightly different.

^cThe most closely related validly described type strain is M. adhaesivum AR27^T.

^dThe phylogenetic placement of the strain is not absolutely clear. The levels of 16S rRNA gene sequence identity are 100% with M. oryzae and 99.93% with M. fujisawaense.