| DGTS | diacylglyceryl-N,N,N-trimethylhomoserine |
| DHB | 2,5-dihydroxybenzoic acid |
| ESI-MS | electrospray ionization mass spectrometry |
| FAs | fatty acids |
| FFAs | free fatty acids |
| GC-MS | gas chromatography–mass spectrometry |
| HILIC | hydrophilic interaction liquid chromatography |
| MALDI-TOF-MS | matrix-assisted laser desorption/ionization-time of flight mass spectrometry |
| MRM | multiple reaction monitoring mode |
| MS/MS | tandem mass spectrometry |
| Nod | nodulation |
| OD | optical density |
| PCA | principal component analysis |
| RP-LC | reversed phase liquid chromatography |
| TIC | total ion current |
| TMS | trimethylsilyl |