Comparative mitochondrial proteomic, physiological, biochemical and ultrastructural profiling reveal factors underpinning salt tolerance in tetraploid black locust (Robinia pseudoacacia L.)

Table 1 Effect of NaCl treatment on the respiration rates in leaves of diploid (2×) and tetraploid (2×) R. pseudoacacia

Treatment	Total respiration Vt (nmol O₂ g⁻¹ FW s⁻¹)	Cytochrome pathway respiration V _Cyt (nmol O₂ g⁻¹ FW s⁻¹)	Alternative pathway respiration V _Alt (nmol O₂ g⁻¹ FW s⁻¹)
2×
0 mM	2.62 ± 0.025a	0.94 ± 0.035a	0.45 ± 0.050a
250 mM	5.98 ± 0.200b	2.33 ± 0.162b	2.24 ± 0.146b
500 mM	9.97 ± 0.510c	3.00 ± 0.265b	3.88 ± 0.278c
4×
0 mM	3.49 ± 0.125a	0.88 ± 0.036a	0.77 ± 0.074a
250 mM	9.67 ± 0.495b	2.80 ± 0.127b	4.23 ± 0.104b
500 mM	13.59 ± 0.121c	4.80 ± 0.210c	5.34 ± 0.056b

Salt treatments were performed for 7 days. Values represent the means of three separate experiments ± standard deviations (SD)

ISSN: 1471-2164