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Table 1 Metabolic response of young leaf tissues of S. stapfianus during rehydration from the desiccated state. Values are fold change (as a log2 value) in metabolite abundance between desiccated (DRY) and initial hydration (HYD) or between rehydration times of 12 h (R12) or 24 h (R24) and either dry or initial hydration

From: Sporobolus stapfianus: Insights into desiccation tolerance in the resurrection grasses from linking transcriptomics to metabolomics

Super Pathway

Compound

DRY/HYD

R12/DRY

R24/DRY

R12/HYD

R24/HY

Amino acid

aspartate

1.99

1.67

2.21

3.34

4.41

glutamate

1.46

 

1.65

1.56

2.4

cysteine-glutathione disulfide

1.98

1.62

2.36

3.21

4.68

betaine

 

0.47

0.67

0.59

 

urocanate

 

4.77

3.77

4.77

3.77

phenylalanine

3.3

1.22

2.2

4.04

7.25

ornithine

 

2.03

1.89

2.49

2.31

stachydrine

 

0.19

0.17

0.56

0.51

Carbohydrate

N-acetylglucosamine

 

0.28

0.41

0.36

0.51

fructose

 

0.66

 

0.46

 

fructose-6-phosphate

 

3.1

2.6

3.1

2.6

glucose

 

0.58

 

0.55

 

glucose-6-phosphate (G6P)

2.09

3.42

2.47

7.14

5.16

glycerate

 

0.4

0.5

0.29

0.36

lactate

 

2.75

2.23

3.17

2.57

pyruvate

   

0.61

0.61

ribitol (adonitol)

 

0.45

 

0.42

0.49

Cofactors and vitamins

nicotinamide riboside*

0.41

0.49

 

0.2

0.22

delta-tocopherol

89.72

2.1

 

188.14

145.6

Energy

mesaconate (methylfumarate)

 

0.5

0.41

0.64

0.52

phosphate

 

0.04

0.1

0.05

0.13

Lipid

malonate (propanedioate)

1.51

0.41

0.42

0.62

0.64

linoleate (18:2n6)

0.52

0.57

0.59

0.3

0.3

palmitate (16:0)

0.67

0.66

0.63

0.44

0.42

2-hyd roxy pal m itate

1.45

0.23

0.4

0.33

 

margarate (17:0)

 

0.55

0.49

0.42

0.37

choline phosphate

 

1.92

4.41

2.14

4.92

glycerol

 

0.59

 

0.51

 

glycerophosphorylcholine (GPC)

0.21

0.25

0.39

0.05

0.08

1-stearoylglycerol (1-monostearin)

 

2.51

 

4.29

 

Nucleotide

2’-deoxyadenosine

 

0.42

0.37

0.39

0.35

adenosine

 

0.24

0.18

0.48

0.36

2’-deoxyguanosine

 

0.62

0.6

0.48

0.46

guanosine

0.7

0.53

 

0.37

0.63

guanosine-S'^'-cyclic monophosphate (cGMP)

 

0.24

0.26

0.24

0.26

allantoin

 

0.11

0.3

0.16

 

2’-deoxycytidine

0.36

0.47

0.41

0.17

0.15

cytidine

 

0.49

0.51

0.44

0.46

thymidine

 

0.6

 

0.43

0.46

Xenobiotics

glycerol 2-phosphate

 

0.32

0.32

0.2

0.2

  1. Cells with values in bold indicate statistically higher levels of a metabolite (p <0.05) in rehydrating leaf tissue compared to either the level of the metabolite in desiccated leaf tissue or the hydrated control leaf tissue. Cells with values in italics indicate lower levels of a metabolite with (p <0.05) in rehydrating leaf tissue compared to either the level of the metabolite in desiccated leaf tissue or the hydrated control leaf tissue. In the DRY/HYD column the red and green shading indicates significantly (p < 0.05) higher and lower levels respectively of a metabolite in the desiccated leaf tissue compared to the hydrated control leaf tissue. Cells without values do not indicate a lack of measurement but rather they indicate that the difference in abundance between the two tissues in the comparison is not statistically significant (p > 0.05)
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BMC Plant Biology

ISSN: 1471-2229

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