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Table 4 Production of qualitative IAA and exopolysaccharides in the selected 24 endophytic bacterial isolates

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

No.

Endophytic bacterial isolates

IAA(µg mL−1) without tryptophan

IAA(µg mL−1) with tryptophan

EPS concentration (mg mg−1 protein)

1

1E3

5.80 ± 0.04a

20.33 ± 0.58c

201.42 ± 6.7bc

2

1E4

4.20 ± 0.02cde

15.50 ± 0.51e

75.91 ± 7.3f

3

1E7

4.40 ± 0.11bc

14.40 ± 0.28f

227.33 ± 10.4b

4

1E8

4.30 ± 0.17 cd

16.23 ± 0.13e

-

5

2E2

4.30 ± 0.23 cd

11.40 ± 0.17 h

-

6

2E3

4.20 ± 0.17cde

10.22 ± 0.04j

-

7

2E6

4.80 ± 0.05b

17.50 ± 0.28d

111.14 ± 4.4de

8

2E11

4.40 ± 0.17dc

10.23 ± 0.13j

88.30 ± 6.4ef

9

3E5

4.60 ± 0.23bc

12.30 ± 0.40 g

-

10

3E6

4.40 ± 0.17bc

11.20 ± 0.23i

-

11

3E8

4.50 ± 0.11bc

8.88 ± 0.18 k

-

12

3E9

4.40 ± 0.05bc

46.60 ± 0.23a

190.80 ± 7.2c

13

3E10

3.80 ± 0.23e

9.55 ± 0.28 k

-

14

3E11

3.90 ± 0.17de

11.30 ± 0.23i

138.70 ± 7.8d

15

3E20

4.50 ± 0.05bc

12.20 ± 0.23gh

-

16

4E1

4.20 ± 0.11cde

–

-

17

4E3

4.49 ± 0.06bc

44.9 ± 0.17b

98.57 ± 3.8ef

18

4E4

–

–

-

19

4E7

–

–

-

20

4E8

–

–

-

21

4E10

–

–

-

22

4E11

–

–

324.30 ± 19.7a

23

4E18

–

–

-

24

4E24

–

–

-

  1. Different letters means significant diffrence, small letters point to the significant between treatments, capital letters point to the significant between means
  2. NS means not significant