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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
   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
  1. 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).
  2. ND. Not detected.