BMC Microbiology

Table 2 Symbiotic phenotype of the otsAch mutant

From: Role of trehalose in heat and desiccation tolerance in the soil bacterium Rhizobium etli

		Moderate drought								Severe drought
Strain	Treatment	Moderate drought								Severe drought
		NN	NDW	PDW	TN	ARA	Lb	Tre (B)	Tre (C)	NN	NDW	PDW	TN	ARA	Lb	Tre (B)	Tre (C)
Wild-type	Control	48 ± 6a	23 ± 3a	0.31 ± 0.02a	4.5 ± 0.3	24 ± 1a	33 ± 1a	1.17 ± 0.32a	ND	56 ± 4a	35 ± 3a	0.51 ± 0.03a	12 ± 0.4a	22 ± 0.6a	37 ± 2a	2.12 ± 0.43b	ND
	Stress	45 ± 4a	22 ± 3a	0.34 ± 0.02a	5.0 ± 0.2	22 ± 2a	32 ± 1a	1.24 ± 0.20a	ND	31 ± 3b	16 ± 1b	0.34 ± 0.03b	5.3 ± 0.1b	14 ± 0.7b	24 ± 1b	2.37 ± 0.39b	ND
*otsAch*	Control	48 ± 5a	24 ± 3a	0.37 ± 0.03a	5.5 ± 0.4	27 ± 3a	35 ± 3a	1.15 ± 0.29a	ND	61 ± 4a	42 ± 5a	0.52 ± 0.03a	12.5 ± 0.5a	27 ± 1.2a	41 ± 4a	1.90 ± 0.32b	ND
	Stress	46 ± 5a	25 ± 5a	0.35 ± 0.05a	5.3 ± 0.3	24 ± 1a	35 ± 3a	1.25 ± 0.30a	ND	35 ± 5b	19 ± 3b	0.37 ± 0.03b	5.5 ± 0.3b	16 ± 1.5b	25 ± 1b	2.08 ± 0.37b	ND

Nodules number (NN), nodule dry weight [NDW, (mg plant^-1)], plant dry weight [PDW, (g plant^-1)], total nitrogen content [TN, (mg plant^-1)], acetylene reduction activity [ARA, (μmol C₂H₄ h^-1 g^-1 NDW)],leghaemoglobin [Lb, (mg Lb g^-1 NDW)], and trehalose (Tre) in bacteroids (B) and nodule cytosol (C) [μmol gDW^-1] content in nodules and plants subjected or not (control) to moderate or severe drought conditions. Values in a column followed by the same lower-case letter are not significantly different as determined by the Tukey HSD test at P ≤ 0.05 (n = 9).
ND. Not detected.

Back to article page

ISSN: 1471-2180

Contact us

General enquiries: journalsubmissions@springernature.com