Table 2

Expression (RT-PCR) of Arabidopsis PG genes in different clades

Set*

Gene1

Gene2

Ks^†

t^‡

p < 0.05^‡

B1

At1g02460

At4g01890

1.0564

3.09

n

B2

At1g10640

At1g60590

1.252

-0.32

n

B3

At1g23460

At1g70500

0.8011

-0.73

n

B3

At1g23470

At1g70500

1.877

-14.70

y

B4

At2g41850

At3g57510

0.6805

-1.43

n

B5

At2g43860

At3g59850

2.1371

-3.00

n

B5

At2g43870

At3g59850

0.9534

2.13

n

B5

At2g43880

At3g59850

1.8279

1.00

n

B5

At2g43890

At3g59850

1.8308

-1.41

n

T1

At1g05650

At1g05660

0.2385

ND^§

y

T2

At1g23460

At1g23470

0.878

6.53

y

T3

At2g43860

At2g43870

1.4013

-6.53

y

T4

At2g43880

At2g43890

4.2072

2.83

n

T5

At3g07820

At3g07830

0.5342

ND^§

y

T5

At3g07820

At3g07840

0.4923

ND^§

y

T5

At3g07830

At3g07840

0.457

ND

ND

T6

At4g32370

At4g32380

2.6336

0.73

n

T7

At5g44830

At5g44840

0.1626

ND

ND

*Each set contains genes that were duplicated through either local-scale block duplication (B) or tandem duplication (T). In duplicated blocks where a PG is collinear with a cluster, the one-to-many relationships are shown. For tandem clusters, all pairwise combinations are shown. ^†Ks, synonymous substitution rate. ^‡Differences in expression patterns significant (y) or not (n) for t-test with df = 2, p < 0.05 [52]. ND, not determined since both genes do not have detectable RT-PCR product or ^§expression was documented for only one gene in the pair.

Kim et al. Genome Biology 2006 7:R87   doi:10.1186/gb-2006-7-9-r87