Table 2.

Effect of salt stress on ProCgNIN and ProCg12 genes activation.

(A)
Transgenic line	Frankia strains	NaCl treatments (mM)	Hours after inoculation
			24	48	72
ProCgNIN: GFP	CcI3	0	+	+	+
		50	+	+	+
	CeD	0	+	+	+
		50	+	+	+
(B)
Transgenic line	Frankia strains	NaCl treatments (mM)	Days after inoculation
			3	7	14
ProCg12: GFP	CcI3	0	−	−	+ + +
		50	−	−	+
	CeD	0	−	−	+ + +
		50	−	−	+

Activation of ProCgNIN:GFP (A) and ProCg12:GFP (B) genes in presence of 0 and 50 mM of NaCl. Reporter gene expression (GFP) was detected using an epifluorescence microscopy. More sign + indicate more fluorescent spots observed per plant in transgenic lines.

+, gene activation; −, inactivation of gene.