Table 1.

Bacterial strain identification

Species	Number of strains (number tested)	BLAST identity	References
Leaf tissue
Bacillus safensis	5 (3)	1	Identified from spacecraft surfaces (Satomi 2006) and detected in Asphodelus aestivus and Capsodes infuscatus nectar (Samuni-Blank et al. 2014) as well as Citrus paradisi (Fridman et al. 2012)
Pantoea agglomerans	1 (1)	0.99	Thought to be non-pathogenic to plants and used as biocontrol agent (Johnson et al. 2000) and found in Amygdalus communis (Fridman et al. 2012) and Capsodes infuscatus nectar (Samuni-Blank et al. 2014)
Pantoea eucalypti	1 (1)	0.99	Isolated from blight in eucalyptus (Brady et al. 2009) and found in nectar (Samuni-Blank et al. 2014)
Pseudomonas oryzihabitans	1 (0)	0.98	Growth promotion for potato plants by iron capture (Sessitsch et al. 2004)
Petal tissue
Erwinia aphidicola	2 (0)	0.99	Pathogenic to aphids and plants (Grenier et al. 2006; Santos et al. 2009)
Erwinia persicina	1 (0)	0.99	Non-pathogenic (Hao et al. 1990) and found in nectar (Fridman et al. 2012; Samuni-Blank et al. 2014)
Erwinia sp.	1 (0)
Ewingella americana	2 (2)	0.97–0.99	Pathogenic to mushrooms (Inglis et al. 1996)
Pantoea agglomerans	7 (2)	0.98–0.99	See above
Pantoea eucalypti	4 (2)	0.97	See above
Pantoea vagans	2 (1)	0.99	Biocontrol against fire blight (Kamber et al. 2012)
Rosenbergiella collisarenosi	1 (growth failed)	0.99	Isolated from floral nectar (Lenaerts et al. 2014)
Nectary tissue
Acinetobacter bereziniae	1 (1)	0.80	Non-pathogenic, evidence for plant growth promotion (Martínez-Rodríguez et al. 2014)
Acinetobacter nectaris	3 (1)	0.98	Isolated from nectar (Álvarez-Pérez et al. 2013; Jacquemyn et al. 2013; Samuni-Blank et al. 2014; Bartlewicz et al. 2016)
Erwinia rhapontici	1 (1)	0.93	Pathogenic to many plants (Feistner et al. 1983)
Pantoea agglomerans	5 (5)	0.98–0.99	See above
Pantoea ananatis	1 (0)	0.99	Common plant pathogen in agricultural crops and forest tree species worldwide (Coutinho and Venter 2009)
Pantoea eucalypti	1 (0)	0.99	See above