Temporal dynamics of stress response in Halomonas elongata to NaCl shock: physiological, metabolomic, and transcriptomic insights

Table 1 Physiological metabolic parameters of H. elongata at 4 h after NaCl shock

Parameters	Before shock	Control	5%^b	8%^b	13%^b
OUR (mmol/L/h)	127.83 ± 5.43	107.83 ± 8.78	137.69 ± 9.54	77.91 ± 9.54	9.89 ± 1.21
q_o2 (mmol/g/h)	6.53 ± 0.18	4.61 ± 0.13	4.38 ± 0.12	3.29 ± 0.11	0.57 ± 0.08
CER (mmol/L/h)	130.15 ± 6.23	110.34 ± 5.65	145.82 ± 7.64	82.42 ± 6.87	11.21 ± 1.62
q_co2 (mmol/g/h)	6.65 ± 0.21	4.72 ± 0.14	4.64 ± 0.15	3.48 ± 0.15	0.64 ± 0.06
Biomass (g/L)	19.58 ± 0.23	23.38 ± 0.57	31.41 ± 0.96	23.65 ± 0.78	17.38 ± 0.66
µ (h^− 1)	0.18 ± 0.02	0.06 ± 0.01	0.13 ± 0.01	0.05 ± 0.01	0.02 ± 0.01
P (g/L)	0.54 ± 0.09	1.75 ± 0.23	4.08 ± 0.28	4.58 ± 0.19	0.31 ± 0.06
q_p (mg ectoine/ g DCW/h)	1.35 ± 0.01	12.13 ± 0.15	12.41 ± 0.32	66.54 ± 1.86	0.00 ± 0.00
Glucose (g/L)	21.65 ± 0.65	0.66 ± 0.11	1.82 ± 0.31	8.71 ± 0.61	19.12 ± 0.68
Productivity^a (mg/L/h)	30 ± 11	320 ± 61	1230 ± 112	1450 ± 99	-40 ± 10

Productivity^a refers to the maximum productivity during 4 h after NaCl shock
^b refers to the NaCl concentration (%) in the fermentation broth after osmotic shock
CER (carbon dioxide expiration rate), OUR (oxygen uptake rate)

ISSN: 1475-2859