Table 1 Diatom endometabolites assigned with high confidence in the diel experiment. For detailed information for compound identification and confidence level, see Table S1 and Fig. S1.

From: Diel investments in metabolite production and consumption in a model microbial system

Compound category/Sub-category

Compound

Function

Group, temporal pattern

Amine

Trimethylamine N-oxide (TMAO)

 

n.a.

Amino acid

Alanine

Amino acid metabolism

n.a.

Arginine

Amino acid metabolism

n.a.

Asparagine

Amino acid metabolism

M-1 (p < 0.001)

Aspartate

Amino acid metabolism

M-4 (p < 0.01)

Glutamine

Amino acid metabolism

M-4 (p < 0.001)

Glutamate

Amino acid metabolism

n.a.

Glycine

Amino acid metabolism

M-1 (p < 0.01)

Lysine

Amino acid metabolism

M-1 (p < 0.001)

Proline

Amino acid metabolism/osmoregulation

M-4 (p < 0.001)

Amino acid/Branched-chain

Valine

Amino acid metabolism

n.a.

Isoleucine

Amino acid metabolism

M-1 (p < 0.001)

Leucine

Amino acid metabolism

M-1 (p < 0.001)

Amino acid derivative

Glycine betaine

Osmoregulation

M-1 (p < 0.05)

Dimethylglycine

 

n.a.

Homarine

Osmoregulation

M-1 (p < 0.05)

Amino alcohol

Ethanolamine

Lipid metabolism

M-1 (p < 0.01)

Choline

Choline

Lipid metabolism

n.a.

Choline derivative

Phosphorylcholine

Lipid metabolism

M-1 (p < 0.001)

Phosphocholine

Glycerophosphocholine

Lipid metabolism

n.a.

Glycerol derivative

Glycerol 3-phosphate

Lipid metabolism

M-1 (p < 0.01)

Nucleoside

Adenosine

Nucleic acids/ATP constituent

n.a.

Guanosine

Nucleic acids/GTP constituent

M-4

Uridine

 

M-3 (p < 0.001)

Organic acid

3-Hydroxybutyrate

Carbon metabolism

M-2 (p < 0.01)

Acetate

Carbon metabolism

M-2 (p < 0.01)

4-Hydroxyphenylacetate

 

n.a.

Sugar/Monosaccharide

Glucose

Carbon/central energy metabolism

M-3 (p < 0.001)

Sugar/Polysaccharide

β(1,3)-glucan

Carbon metabolism/storage

M-3 (p < 0.001)

Sulfur compound

Dihydroxypropane-sulfonate (DHPS)

Osmoregulation

M-1 (p < 0.001)

Dimethylsulfonio-propionate (DMSP)

Osmoregulation

M-1 (p < 0.001)

  1. Temporal pattern assignments correspond to those in Fig. 1; M-1 = increase, M-2 = decrease, M-3 = diel with a peak at mid-afternoon, and M-4 = diel with a peak at noon. Statistical significance was determined based on linear regression analysis (M-1 and M-2), and RAIN for diel cycles (M-3 and M-4). n.a., not applicable (membership value of >0.5, see text for the detail).