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Table 1 Fatty acid composition of different M. alpina strains grown in Kendrick medium for 168 h

From: Metabolic engineering of Mortierella alpina for arachidonic acid production with glycerol as carbon source

Strain

Carbon source

Fatty acid content (%, w/w fatty acids)

C16:0

C18:0

C18:1

C18:2

C18:3

C20:3

C20:4

Total PUFAs

M. alpina

Glucose

13.9 ± 1.1a

11 ± 0.6a

10 ± 0.7a

17.1 ± 1.3a

2.7 ± 0.2a

1.9 ± 0.1a,b

33.4 ± 2.2a

55.2 ± 3.1a

M. alpina

Glycerol

15.1 ± 0.6a

14.4 ± 0.9b,c

12.1 ± 0.4a,b

11.4 ± 0.6b

1.3 ± 0.1b,c

1.2 ± 0.1c,d

34.5 ± 3.1a

48.5 ± 3.4b

MA-gk-1

Glycerol

15.3 ± 1.2a

14.8 ± 0.5b,c

11.4 ± 0.6a,b

13.5 ± 1.2b,c,d

2.1 ± 0.3d

1.5 ± 0.2c,e

32.4 ± 2.2a

49.6 ± 2.2b

MA-gk-2

Glycerol

14.6 ± 1.8a

12.9 ± 0.9c

13 ± 1.3b

14.3 ± 1.1c,d

2.1 ± 0.1d

1.5 ± 0.1c,e

31.4 ± 2.5a

49.3 ± 2.5b

MA-gk-3

Glycerol

15.3 ± 1.1a

14.3 ± 1.2b,c

11.9 ± 2.2a,b

15.8 ± 0.8a,c

1.9 ± 0.2d,e

1.1 ± 0.3c,d

29.7 ± 1.8a

48.4 ± 2.1b

MA-g3pd1-1

Glycerol

16.3 ± 0.7a

13.3 ± 1.2b,c

12.9 ± 0.8b

13.7 ± 0.4b,c,d

1.4 ± 0.2b,c

2.2 ± 0.2a

29.3 ± 1.3a

46.4 ± 1.7b

MA-g3pd1-2

Glycerol

15.7 ± 1.1a

15.3 ± 1.4b

13.7 ± 1.1b

11.7 ± 1.1b

1.9 ± 0.1d,e

1.6 ± 0.1b,e

30.3 ± 2.2a

45.6 ± 3.2b

MA-g3pd1-3

Glycerol

16.3 ± 1.2a

14.9 ± 1.1b,c

14.3 ± 1.5b

12.2 ± 0.6b,d

1.7 ± 0.4b,d,e

1.3 ± 0.1c,d,e

31.3 ± 1.2a

46.4 ± 2.6b

MA-g3pd2-1

Glycerol

16.1 ± 1.5a

14.8 ± 1.3b,c

13.5 ± 0.5b

14.5 ± 0.9 c,d

1.1 ± 0.1c

1 ± 0.2d

30.1 ± 2.6a

46.8 ± 3.1b

MA-g3pd2-2

Glycerol

15.6 ± 2a

13.9 ± 0.9b,c

13.2 ± 0.8b

13.3 ± 1.3b,c,d

1.4 ± 0.1b,c

1.1 ± 0.2 c,d

30.6 ± 0.7a

46.4 ± 1.6b

MA-g3pd2-3

Glycerol

15.5 ± 1.3a

14 ± 1.5b,c

13.1 ± 1.5b

12.7 ± 1.3b,c,d

1.6 ± 0.3b,e

1.4 ± 0.1c,e

31.2 ± 1.1a

46.9 ± 2.8b

MA-g3pd3-1

Glycerol

15.8 ± 1.6a

13.5 ± 1.2b,c

13.1 ± 1.1b

13.4 ± 0.7b,c,d

1.3 ± 0.1b,c

1.2 ± 0.1 c,d

31.1 ± 3.1a

47 ± 2.8b

MA-g3pd3-2

Glycerol

15.6 ± 1.1a

13.6 ± 1.3b,c

13.3 ± 0.9b

13.7 ± 1.2b,c,d

1.6 ± 0.1b,e

1.2 ± 0.1c,d

30.9 ± 2.1a

47.4 ± 2.1b

MA-g3pd3-3

Glycerol

15.4 ± 1.4a

13.5 ± 1.1b,c

13.5 ± 1.1b

13.1 ± 0.8b,d

1.5 ± 0.1b,c,e

1.4 ± 0.1c,e

31.2 ± 2.2a

47.2 ± 2.5b

  1. M. alpina: wild type M. alpina; MA-gk-1, MA-gk-2 and MA-gk-3: GK overexpressing strains; MA-g3pd1-1, MA- g3pd1-2 and MA-g3pd1-3: G3PD1 overexpressing strains; MA-g3pd2-1, MA-g3pd2-2 and MA-g3pd2-3: G3PD2 overexpressing strains; MA-g3pd3-1, MA-g3pd3-2 and MA-g3pd3-3: G3PD3 overexpressing strains. a,b,c,d,e mean the values within a row with different superscript letters were significantly different (p < 0.05) as analyzed by ANOVA