Alteration in expression level of some growth and stress-related genes after rhizobacteria inoculation to alleviate drought tolerance in sensitive rice genotype

Chemical and Biological Technologies in Agriculture

Table 3 Soil enzymatic activities: dehydrogenase, nitrogenase, urease and alkaline phosphatase in rhizosphere of four rice genotypes as affected with drought stress

Treatments	Genotype	Measurements
		Dehydrogenase	Nitrogenase	Urease	Alkaline
		μgTPF g⁻¹ soil day ⁻¹	n mole C₂H₄ g¹ soil h⁻¹	µmol N-NH3 g⁻¹ soil h⁻¹	mg pNP g⁻¹ soil h⁻¹
Control	Orabi3	117.10 ± 6.08^a	7.75 ± 0.55^a	610.29 ± 2.78^a	0.54 ± 0.02^a
	Vandana	89.88 ± 6.80^bc	5.92 ± 0.83^b	599.45 ± 9.60^a	0.45 ± 0.05^b
	IR64	88.97 ± 4.36^bc	3.45 ± 0.09^c	546.36 ± 8.00^b	0.31 ± 0.01^c
	G177	92.81 ± 3.79^b	4.26 ± 0.89^c	590.29 ± 7.46^a	0.33 ± 0.04^c
Mean ± SD		97.19 ± 12.94^A	5.35 ± 1.82^A	586.59 ± 26.14^A	0.41 ± 0.10^A
Drought (stress)	Orabi3	98.21 ± 5.43^a	5.65 ± 0.41^a	487.56 ± 24.46^a	0.48 ± 0.01^a
	Vandana	77.30 ± 11.43^b	4.14 ± 0.50^b	461.47 ± 36.95^b	0.44 ± 0.04^a
	IR64	59.85^c	2.20 ± 0.91^c	447.56 ± 14.48^b	0.28 ± 0.03^b
	G177	83.06 ± 9.41^b	3.09 ± 0.82^c	454.00 ± 25.16^b	0.30 ± 0.01^b
Mean ± SD		79.61 ± 16.03^B	3.77 ± 1.47^B	462.65 ± 27.61^B	0.38 ± 0.09^A
Two-way ANOVA P-values
Treatments		0.005	0.045	0.000	0.678^NS
Genotype		0.000	0.000	0.009	0.000
Interaction (treatments × genotype)		0.000	0.000	0.000	0.000

Different letters means significant diffrence, small letters point to the significant between treatments, capital letterspoint to the significant between means
NS means not significant