TABLE 1.

Bacterial communities on leaves of perennial rye (Lolium perenne)^a and olive (Olea europea)^b

Plant and bacterial component or species	Relative abundancec (%)
Perennial rye
Pseudomonas fluorescens	20.12
Xanthomonas campestris	19.64
“Coryneform bacteria”	8.37
Yellow chromogens	4.83
Flexibacter spp.	4.66
Listeria spp.	4.02
Pink chromogens	3.86
Staphylococcus saprophyticus	1.77
Other gram-negative rods	1.61
Klebsiella spp.	0.96
Acinetobacter spp.	0.96
Erwinia herbicola	0.80
Pseudomonas spp.	0.64
Staphylococcus spp.	0.64
Bacillus spp.	0.32
Micrococcus luteus	0.32
Orange chromogens	0.32
Unidentified isolates	26.57
Olive
Pseudomonas syringae	51.0
Xanthomonas campestris	6.7
Erwinia herbicola	6.0
Acetobacter aceti	4.7
Gluconobacter oxydans	4.3
Pseudomonas fluorescens	3.9
Bacillus megaterium	3.8
Leuconostoc mesenteroides subsp. dextranicum	3.1
Lactobacillus plantarum	2.8
Curtobacterium plantarum	2.2
Micrococcus luteus	2.2
Arthrobacter globiformis	1.4
Klebsiella planticola	1.2
Streptococcus faecium	1.2
Clavibacter sp.	0.98
Micrococcus sp.	0.82
Serratia marcescens	0.81
Bacillus subtilis	0.57
Cellulomonas flavigena	0.4
Erwinia sp.	0.37
Zymomonas mobilis	0.3
Bacillus sp.	0.29
Alcaligenes faecalis	0.27
Erwinia carotovora	0.08
Pseudomonas aeruginosa	0.04

^aAdapted from Austin et al. (13). 

^bAdapted from Ercolani (71). 

^cTotal numbers of isolates tested were 621 for perennial rye and 1,701 for olive.