Resilient microorganisms in dust samples of the International Space Station—survival of the adaptation specialists

Table 5 Comparison of microbial community composition of US American ISS dust samples [4] and Russian ISS dust samples (this study)

		US American ISS dust samples				Russian ISS dust samples
		ISS HEPA total	ISS HEPA viable	ISS DEBRIS	ISS DEBRIS viable	Incubated dust filter-1 (2004)	Incubated dust collector (2008)	Incubated dust filter (2008)	Incubated dust filter-2 (2004)	Incubated dust collector (2004)	Dust filter-1 (2004)	Dust collector (2008)	Dust filter (2008)
	Total number of reads	553,176	587,569	1,148,047	1,116,419	24,382	61,571	49,956	7278	39,289	15,021	7599	22,343
	Percentages of sequences of all dominant phyla (Archaea and Bacteria)	90.92	99.65	92.35	98.26	95.6	92.9	89.2	89	92.1	93.9	92.2	81.3
	Percentages of sequences of dominant bacterial phyla (without Archaea)	90.92	99.65	92.35	98.26	95.6	92.9	89.2	89	92.1	45.2	91.8	81.3
Actinobacteria	Percentage of sequences	63.28	95.28	40.52	66.54	39.7	21.3	29.9	12.9	19.4	14.2	36.0	20.0
	Number of Genera	78	55	62	38	21	50	28	21	54	13	21	22
	Number of dominant genera^a	16	7	28	16	8	16	11	2	15	5	4	5
Firmicutes	Percentage of sequences	24.83	3,97	45.67	28.48	40.5	28.6	44.4	15.8	39.9	20.8	30.3	44.2
	Number of Genera	118	67	100	31	89	105	92	23	99	41	39	84
	Number of dominant genera^a	50	17	65	18	39	29	33	2	33	7	6	24
Proteobacteria	Percentage of sequences	2,81	0,41	6,16	3,24	15.4	43.0	14.9	60.3	32.8	10.2	25.5	17.1
	Number of Genera	95	65	89	30	35	82	43	20	88	19	26	40
	Number of dominant genera^a	22	7	49	10	9	25	13	8	22	4	5	10
Thaumarchaea	Percentage of sequences	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	48.7	0.4	0.0
	Number of Genera	0	0	0	0	0	0	0	0	0	2	1	0
	Number of dominant genera^a	0	0	0	0	0	0	0	0	0	1	0	0

ISSN: 2049-2618