Table 3 Effect of exogenous glycine betaine and cycloleucine treatments on amino acid content of eggplant plants.

From: Effects of exogenous glycine betaine and cycloleucine on photosynthetic capacity, amino acid composition, and hormone metabolism in Solanum melongena L.

Amino acid (μg g−1)

Glycinebetaine

Cycloleucine

GB-0

GB-20

GB-40

GB-60

Cyc-0

Cyc-10

Cyc-20

Cyc-40

Lysine

28.71 ± 0.79d

37.26 ± 0.57c

50.36 ± 0.24b

53.69 ± 0.49a

46.26 ± 3.59c

92.7 ± 11.16b

150.94 ± 5.78a

148.8 ± 2.33a

Threonine

24.42 ± 0.95ab

23.33 ± 1.22b

28.35 ± 1.33a

23.32 ± 1.45b

90.1 ± 0.71bc

89.15 ± 0.83c

101.12 ± 1.76a

93.3 ± 1.13b

Phenylalanine

24.33 ± 3.45ab

19.41 ± 0.22b

27.59 ± 1.79a

20.83 ± 0.94ab

70.21 ± 2.00b

76.56 ± 1.36ab

82.67 ± 1.23ab

54.24 ± 3.85b

Tryptophan

7.69 ± 0.35c

8.34 ± 0.42c

19.53 ± 0.06a

9.79 ± 0.13b

130.32 ± 4.46a

62.00 ± 2.78b

27.06 ± 0.98c

31.24 ± 0.42c

Leucine

8.54 ± 0.35b

9.24 ± 0.63b

10.67 ± 0.31ab

11.94 ± 1.03a

13.67 ± 0.15c

15.2 ± 0.52c

36.95 ± 0.50b

63.14 ± 2.55a

Isoleucine

9.73 ± 0.09d

10.84 ± 0.06c

12.64 ± 0.58b

14.29 ± 0.06a

14.55 ± 0.26c

16.83 ± 1.17c

40.32 ± 2.28b

64.26 ± 2.78a

Valine

13.86 ± 0.26d

16.79 ± 0.48c

19.97 ± 0.35b

23.69 ± 0.42a

49.21 ± 5.20a

26.24 ± 1.54b

44.07 ± 2.16a

47.63 ± 4.15a

Methionine

4.76 ± 0.19b

5.35 ± 0.27b

5.25 ± 0.20b

7.58 ± 0.05a

8.40 ± 0.07c

9.43 ± 0.41c

28.99 ± 1.48b

45.91 ± 2.48a

Cysteine

6.38 ± 0.25a

6.16 ± 0.10a

6.03 ± 0.03a

6.04 ± 0.07a

5.98 ± 0.03a

6.04 ± 0.08a

6.12 ± 0.13a

6.18 ± 0.21a

Alanine

43.88 ± 1.40a

50.49 ± 3.20a

52.63 ± 3.38a

47.76 ± 4.02a

101.86 ± 0.25b

70.72 ± 2.99c

113.7 ± 2.66ab

121.73 ± 9.16a

Glycine

5.84 ± 0.62a

3.55 ± 0.16b

4.34 ± 0.42b

4.65 ± 0.16ab

3.80 ± 0.17d

13.6 ± 0.23c

51.94 ± 0.61a

32.61 ± 0.04b

Tyrosine

0.48 ± 0.05d

4.70 ± 0.34a

3.63 ± 0.10b

2.96 ± 0.13c

11.49 ± 0.17c

20.65 ± 0.11b

27.12 ± 2.18a

28.00 ± 1.96a

Aspartate

73.48 ± 0.97b

151.68 ± 2.98a

144.30 ± 2.94a

151.05 ± 2.68a

491.01 ± 15.51a

267.59 ± 1.65b

434.47 ± 29.03a

469.3 ± 25.62a

Proline

53.29 ± 1.79c

69.74 ± 1.12b

130.13 ± 0.55a

33.96 ± 1.08d

746.30 ± 8.88a

476.39 ± 14.5c

698.68 ± 37.85b

344.13 ± 11.98d

Serine

30.45 ± 2.27b

55.96 ± 1.56a

54.38 ± 1.68a

61.79 ± 5.06a

142.35 ± 7.31c

148.95 ± 7.86c

273.42 ± 11.47b

313.2 ± 8.41a

Glutamate

143.26 ± 3.66c

312.29 ± 8.52a

258.39 ± 11.26b

335.1 ± 3.82a

503.01 ± 6.43d

671.15 ± 9.22b

788.13 ± 15.03a

565.37 ± 13.86c

Glutamine

30.55 ± 0.84d

40.74 ± 1.23c

48.83 ± 3.27b

55.26 ± 0.40a

47.82 ± 3.55c

82.78 ± 3.21b

163.26 ± 11.88a

150.67 ± 2.68a

Arginine

32.10 ± 0.19a

20.93 ± 0.28b

21.28 ± 0.95b

31.04 ± 2.24a

24.36 ± 1.34d

91.37 ± 0.86c

300.59 ± 17.38a

193.38 ± 1.89b

Asparagine

7.50 ± 0.19b

19.19 ± 0.54a

7.59 ± 0.19b

7.75 ± 0.13b

132.93 ± 3.96a

76.05 ± 1.65c

104.24 ± 0.23b

100.58 ± 1.64b

Histidine

12.94 ± 0.21b

9.89 ± 0.34c

9.02 ± 0.32c

16.37 ± 0.75a

29.35 ± 3.14d

71.77 ± 3.53c

82.72 ± 1.72b

193.67 ± 1.41a

Cystine

5.32 ± 0.54a

5.12 ± 0.40ab

4.09 ± 0.18b

4.69 ± 0.02ab

4.02 ± 0.06b

5.89 ± 0.11a

3.84 ± 0.10b

5.56 ± 0.45a

  1. The growth parameters of eggplant plants were obtained on the 14th day after the end of the treatment. The results are shown as the mean ± SE of three replicates, and the different letters denote significant differences between treatments (p < 0.05), according to Duncan's multiple range tests. CK: 0 mmol L−1; GB-20:20 mmol L−1 glycine betaine; GB-40:40 mmol L−1 glycine betaine; GB-60: 60 mmol L−1 glycine betaine. Cyc-0: 0 mmol L−1; Cyc-10: 10 mmol L−1 cycloleucine; Cyc- 20: 20 mmol L−1 cycloleucine; Cyc-40: 40 mmol L−1 cycloleucine.
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