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Table 2 Effects of sediment type on the amino acids in the aboveground and belowground tissues of seagrass Thalassia hemprichii. 1:0, the in-situ sediment without combining with coarse beach sand was added in the tank; 1:1, the combination of half in-situ sediment and half coarse beach sand was added in the tank; 1:2, the combination of 1/3 in-situ sediment and 2/3 coarse beach sand was added in the tank

From: Sand supplementation favors tropical seagrass Thalassia hemprichii in eutrophic bay: implications for seagrass restoration and management

Amino acid

Aboveground tissue

Belowground tissue

1:0

1:1

1:2

1:0

1:1

1:2

content (μg/g)

ratio (%)

content (μg/g)

ratio (%)

content (μg/g)

ratio (%)

content (μg/g)

ratio (%)

content (μg/g)

ratio (%)

content (μg/g)

ratio (%)

glycine

38.2 ± 5.6a

0.71

17.9 ± 4.2b

0.56

21.4 ± 5.9b

0.54

125.8 ± 22.5A

1.32

27.7 ± 4.1B

0.80

36.1 ± 1.9B

0.92

sarcosine

927.1 ± 194.8a

17.18

182.8 ± 98.5b

5.69

457.9 ± 286.4b

11.57

2393.1 ± 618.4A

25.15

305.0 ± 38.6B

8.83

511.8 ± 254.0B

13.07

alanine

296.4 ± 40.0a

5.49

74.7 ± 31.4b

2.33

155.0 ± 100.4b

3.91

605.9 ± 120.9A

6.37

103.0 ± 7.3B

2.98

149.2 ± 45.9B

3.81

valine

93.2 ± 17.9a

1.73

27.9 ± 13.9b

0.87

51.0 ± 21.1b

1.29

147.2 ± 9.0A

1.55

31.4 ± 1.7B

0.91

35.4 ± 10.3B

0.90

proline

1234.0 ± 54.6a

22.87

860.8 ± 267.9a

26.81

979.6 ± 201.1a

24.74

1532.4 ± 225.5A

16.11

711.5 ± 44.9C

20.60

930.2 ± 65.2B

23.75

threonine

55.5 ± 4.0a

1.03

37.3 ± 14.4a

1.16

39.0 ± 13.8a

0.98

288.4 ± 39.8A

3.03

92.6 ± 10.8B

2.68

65.3 ± 5.1C

1.67

isoleucine

41.9 ± 9.5a

0.78

11.6 ± 6.2b

0.36

22.8 ± 8.2b

0.58

62.6 ± 11.3A

0.66

12.2 ± 1.5B

0.35

13.2 ± 3.2B

0.34

leucine

32.9 ± 6.9a

0.61

5.5 ± 2.1b

0.17

15.3 ± 9.6b

0.39

25.3 ± 5.3A

0.27

4.8 ± 1.0B

0.14

6.2 ± 0.8B

0.16

ornithine

59.4 ± 4.1a

1.10

53.5 ± 15.5a

1.67

52.2 ± 6.6a

1.32

208.6 ± 17.0A

2.19

115.8 ± 8.1B

3.35

99.6 ± 19.5B

2.54

methionine

2.5 ± 0.5a

0.05

1.2 ± 0.1b

0.04

1.2 ± 0.1b

0.03

12.7 ± 0.9A

0.13

2.1 ± 0.3B

0.06

1.8 ± 0.4B

0.05

histidine

20.3 ± 5.4a

0.38

12.4 ± 1.1a

0.39

21.1 ± 5.8a

0.53

49.8 ± 5.1A

0.52

13.3 ± 2.3B

0.39

11.4 ± 1.8B

0.29

phenylalanine

23.6 ± 5.9a

0.44

6.8 ± 2.0b

0.21

12.9 ± 7.6ab

0.33

13.4 ± 4.4A

0.14

3.7 ± 0.9B

0.11

3.8 ± 0.7B

0.10

arginine

14.6 ± 1.7a

0.27

6.7 ± 1.1b

0.21

9.7 ± 4.5ab

0.25

116.9 ± 74.2A

1.23

221.7 ± 27.2B

6.42

329.8 ± 27.7B

8.42

tyrosine

16.5 ± 3.1a

0.31

5.9 ± 1.8b

0.19

10.5 ± 4.3ab

0.27

20.1 ± 2.5A

0.21

4.0 ± 1.3B

0.12

3.8 ± 0.6B

0.10

asparagic acid

350.5 ± 6.2a

6.50

339.5 ± 92.3a

10.57

299.4 ± 16.4a

7.56

1224.5 ± 86.9A

12.87

729.9 ± 49.4B

21.14

618.1 ± 117.4B

15.78

tryptophan

409.0 ± 23.2a

7.58

350.4 ± 114.9a

10.91

378.1 ± 47.6a

9.55

443.7 ± 192.7A

4.66

229.4 ± 24.7AB

6.64

200.0 ± 60.3B

5.11

4-aminobutyric acid

555.5 ± 57.8a

10.29

182.0 ± 98.9b

5.67

334.2 ± 206.1ab

8.44

792.5 ± 112.1A

8.33

162.9 ± 47.3B

4.72

287.5 ± 51.2B

7.34

serine

73.7 ± 4.9a

1.36

47.1 ± 8.7b

1.47

69.6 ± 16.8ab

1.76

176.9 ± 40.1A

1.86

50.6 ± 3.0B

1.47

51.8 ± 3.0B

1.32

lysine

643.5 ± 50.1a

11.92

574.8 ± 195.1a

17.90

577.8 ± 119.7a

14.59

717.3 ± 417.3A

7.54

316.5 ± 35.3A

9.17

285.2 ± 96.1A

7.28

glutamate

508.3 ± 30.6a

9.42

412.6 ± 103.2a

12.85

450.7 ± 56.1a

11.38

557.6 ± 213.6A

5.86

315.0 ± 33.4AB

9.12

277.1 ± 77.2B

7.07

sum

5396.7 ± 378.0a

100

3211.5 ± 1064.1b

100

3959.5 ± 1108.6ab

100

9514.5 ± 1890.8A

100

3453.3 ± 247.6B

100

3917.3 ± 145.0B

100

  1. The different lower case and upper case letters indicated significant differences for aboveground and belowground tissues among treatments, respectively