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Table 1 Summary and analysis of EST database search results. Search results from all eight databases are summarized, including database size and number of ESTs showing significant similarity to each MST subfamily on BLASTX search for each taxon. For the five large databases (>100,000 ESTs), the percentage of subfamily ESTs as a proportion of total MST ESTs, the percentage of MST ESTs as a proportion of total ESTS, and the number of expressed loci is shown.

From: The monosaccharide transporter gene family in land plants is ancient and shows differential subfamily expression and expansion across lineages

Taxon

ESTdb size

ESTs with significant homology to the MST subfamily

% subfamily ESTs as a proportion of total MST ESTs

Number of expressed subfamily gene loci in EST database

Total MST ESTs

% MST ESTs

Expressed loci

  

STP

AZT

ERD6-like

pGlcT

INT

PLT

XyloseTP-like

 

Marchantia (liverwort)

1,415

2

      

2

0.14%

Physcomitrella(moss)

140,617

14

9.7%

3

54

37.5%

5

5

3.5%

2

54

37.5%

5

11

7.6%

2

 

6

4.2%

1

144

0.10%

18

Selaginella(lycophyte)

1,046

  

1

1

   

2

0.19%

Ceratopteris(fern)

5,085

1

1

 

1

1

1

1

6

0.12%

Pinus(gymnosperm)

291,588

83

27.4%

21

8

2.6%

2

36

11.9%

10

64

21.1%

5

58

19.1%

14

41

13.5%

8

13

4.3%

2

303

0.10%

62

Zea(monocot)

417,803

61

19.6%

15

51

16.3%

4

62

19.9%

9

41

13.1%

5

38

12.2%

3

47

15.1%

8

12

3.8%

2

312

0.07%

46

Lycopersicon(eudicot – asterid)

189,735

27

29.0%

6

3

3.2%

1

33

35.5%

7

8

8.6%

3

4

4.3%

2

10

10.8%

3

8

8.6%

2

93

0.05%

24

Arabidopsis(eudicot – rosid)

415,250

507

43.9%

10

41

3.5%

2

352

30.5%

18

71

6.1%

4

32

2.8%

4

111

9.6%

3

41

3.6%

3

1155

0.28%

44