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Table 2 Gene Ontology annotation of P. euphratica unigene sequences

From: Gene expression and metabolite profiling of Populus euphratica growing in the Negev desert

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

  1. 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).