Table 2.
Gene Ontology annotation of P. euphratica unigene sequences
| GO term | GO | Number of sequences |
| biological_process | GO:0008150 | 2,141 |
| behavior | GO:0007610 | 48 |
| cellular process | GO:0009987 | 681 |
| cell communication | GO:0007154 | 167 |
| cell-cell signaling | GO:0007267 | 1 |
| response to extracellular stimulus | GO:0009991 | 11 |
| signal transduction | GO:0007165 | 150 |
| cell death | GO:0008219 | 33 |
| cell differentiation | GO:0030154 | 87 |
| cell growth and/or maintenance | GO:0008151 | 546 |
| cell cycle | GO:0007049 | 83 |
| cell growth | GO:0016049 | 5 |
| cell organization and biogenesis | GO:0016043 | 157 |
| cell homeostasis | GO:0019725 | 25 |
| transport | GO:0006810 | 397 |
| development | GO:0007275 | 211 |
| cell differentiation | GO:0030154 | 87 |
| embryonic development | GO:0009790 | 1 |
| flower development | GO:0009908 | 12 |
| morphogenesis | GO:0009653 | 96 |
| regulation of gene expression, epigenetic | GO:0040029 | 11 |
| reproduction | GO:0000003 | 60 |
| ripening | GO:0009835 | 29 |
| physiological process | GO:0007582 | 2,096 |
| photosynthesis | GO:0015979 | 74 |
| response to stress | GO:0006950 | 270 |
| response to endogenous stimulus | GO:0009719 | 84 |
| response to external stimulus | GO:0009605 | 229 |
| response to abiotic stimulus | GO:0009628 | 69 |
| response to biotic stimulus | GO:0009607 | 199 |
| metabolism | GO:0008152 | 1,758 |
| amino acid and derivative metabolism | GO:0006519 | 123 |
| biosynthesis | GO:0009058 | 512 |
| carbohydrate metabolism | GO:0005975 | 255 |
| catabolism | GO:0009056 | 317 |
| electron transport | GO:0006118 | 247 |
| energy pathways | GO:0006091 | 154 |
| lipid metabolism | GO:0006629 | 125 |
| nucleobase\, nucleoside\, nucleotide and nucleic acid metabolism | GO:0006139 | 367 |
| DNA metabolism | GO:0006259 | 123 |
| transcription | GO:0006350 | 36 |
| protein metabolism | GO:0019538 | 757 |
| protein biosynthesis | GO:0006412 | 252 |
| protein modification | GO:0006464 | 222 |
| cellular_component | GO:0005575 | 33 |
| cell | GO:0005623 | 7 |
| external encapsulating structure | GO:0030312 | 4 |
| cell wall | GO:0005618 | 45 |
| intracellular | GO:0005622 | 234 |
| cytoplasm | GO:0005737 | 386 |
| cytoskeleton | GO:0005856 | 28 |
| cytosol | GO:0005829 | 101 |
| endoplasmic reticulum | GO:0005783 | 152 |
| endosome | GO:0005768 | 15 |
| Golgi apparatus | GO:0005794 | 60 |
| lysosome | GO:0005764 | 36 |
| mitochondrion | GO:0005739 | 236 |
| peroxisome | GO:0005777 | 39 |
| plastid | GO:0009536 | 387 |
| ribosome | GO:0005840 | 173 |
| vacuole | GO:0005773 | 47 |
| nucleus | GO:0005634 | 494 |
| nuclear membrane | GO:0005635 | 7 |
| nucleolus | GO:0005730 | 25 |
| nucleoplasm | GO:0005654 | 6 |
| thylakoid | GO:0009579 | 78 |
| membrane | GO:0016020 | 436 |
| plasma membrane | GO:0005886 | 59 |
| extracellular | GO:0005576 | 15 |
| extracellular matrix | GO:0005578 | 6 |
| extracellular space | GO:0005615 | 8 |
| unlocalized | GO:0005941 | 11 |
| molecular_function | GO:0003674 | 2,391 |
| chaperone activity | GO:0003754 | 78 |
| catalytic activity | GO:0003824 | 1,424 |
| hydrolase | GO:0016787 | 440 |
| kinase | GO:0016301 | 199 |
| transferase | GO:0016740 | 427 |
| enzyme regulator activity | GO:0030234 | 38 |
| binding | GO:0005488 | 1,278 |
| carbohydrate binding | GO:0030246 | 1 |
| lipid binding | GO:0008289 | 22 |
| nucleic acid binding | GO:0003676 | 540 |
| DNA binding | GO:0003677 | 245 |
| chromatin binding | GO:0003682 | 8 |
| transcription factor activity | GO:0003700 | 63 |
| nuclease activity | GO:0004518 | 20 |
| RNA binding | GO:0003723 | 216 |
| translation factor activity, nucleic acid binding | GO:0008135 | 58 |
| nucleotide binding | GO:0000166 | 482 |
| oxygen binding | GO:0019825 | 1 |
| protein binding | GO:0005515 | 220 |
| molecular_function unknown | GO:0005554 | 84 |
| motor activity | GO:0003774 | 17 |
| signal transducer activity | GO:0004871 | 101 |
| receptor binding | GO:0005102 | 4 |
| receptor activity | GO:0004872 | 61 |
| structural molecule activity | GO:0005198 | 232 |
| transcription regulator activity | GO:0030528 | 102 |
| translation regulator activity | GO:0045182 | 58 |
| transporter activity | GO:0005215 | 332 |
P. euphratica unigene sequences were functionally and structurally annotated using Gene Ontology [22] and the complete assignments were summarized using the plant specific GOSlims [28]. GO terms were derived from matching a unigene sequence to a Swissprot protein using the BLASTX method filtered arbitrarily using the expectation value of 1e-10. Any GO terms associated with the Swissprot entry or keywords were parsed from the Swissprot entry (see Materials and methods for complete details).