A receptor-like kinase gene (GbRLK) from Gossypium barbadense enhances salinity and drought-stress tolerance in Arabidopsis

Table 2 The symptoms of the transgenic Arabidopsis and WT suffered salt stress

	FW(g)	Rosette diameter(cm)	Content of chlorophyll a (nmol/g)	Content of chlorophyll b (nmol/g)	Content of anthocyanin (nmol/g)	Rate of chlorosis (150 mM)	Rate of chlorosis (100 mM)	Germination rates (300 mM)
N	0.190 ± 0.02	2.45 ± 0.39	0.211 ± 0.05	0.151 ± 0.02	21.220 ± 1.45	90.2% ± 2.9%	59.2% ± 3.2%	3.3% ± 0.9%
K- 2	0.588 ± 0.09^**	5.40 ± 0.65^**	0.852 ± 0.06^**	0.365 ± 0.07^**	15.116 ± 3.14^**	58.1% ± 1.4%^**	20.0% ± 4.7%^**	33.3% ± 1.6%^**
K- 6	0.387 ± 0.03^**	4.48 ± 0.49^**	0.557 ± 0.72^**	0.269 ± 0.05^**	17.428 ± 2.38^*	76.3% ± 2.2%^*	48.3% ± 1.9%^*	23.3% ± 2.1%^**
K- 3	0.303 ± 0.05^**	4.29 ± 0.29^**	0.691 ± 0.05^**	0.346 ± 0.03^**	16.356 ± 1.30^*	63.3% ± 2.6%^**	32.5% ± 3.2%^**	30.0% ± 2.5%^**
K- 5	0.397 ± 0.05^**	4.90 ± 0.48^**	0.604 ± 0.12^**	0.325 ± 0.09^**	16.264 ± 1.02^*	66.7% ± 7.2%^**	47.5% ± 5.7%^*	26.7% ± 1.9%^**
P	1.886 ± 0.10	9.73 ± 0.58	0.967 ± 0.06	0.406 ± 0.06	9.650 ± 1.84	--	--	1

The data of FW, rosette diameter, content of chlorophyll and anthocyanin were acquired from the 3 week old plants treated by submerging the roots of the plants in 200 mM NaCl solution for 3 weeks. The data of rate of chlorosis and germination rates were acquired from plants grown on MS medium containing different concentration NaCl for 2 weeks. Data represent the mean ± SE (n ≥ 15); similar results were obtained from three independent experiments. N: wild-type Col-0 suffered drought stress, and P: non-treatment wild-type Col-0. Significance of the phenotypic results was assessed using Student’s t tests (*P < 0.05, **P < 0.01).

ISSN: 1471-2229