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Table 5 Plant-specific genes are preferentially expressed in organs compared with genes that are evolutionarily conserved

From: Phylogenetic profiling of the Arabidopsis thalianaproteome: what proteins distinguish plants from other organisms?

Ā 

Classification

Differentially expressed

Percentage of total

Ļ‡2

p

Statistically significant organ-preferential expression

Plant specific

600

56%

51.27

8.1e-13

Ā 

Bacteria (includes cyanobacteria)

122

67%

32.74

1.1e-08

No statistically significant difference from a random sample

Eukaryotes and archaea

37

61%

4.82

2.8e-02

Ā 

Eukaryotes and bacteria

370

46%

0.22

6.4e-01

Ā 

Archaea

3

60%

0.03

8.5e-01

Ā 

Archaea and bacteria

52

49%

0.01

9.2e-01

Ā 

Common to all

15

48%

0.00

9.6e-01

Statistically significant expression everywhere

Eukaryotes

112

27%

61.75

3.9e-15

  1. The first column indicates the conclusion from the statistical test. The second column indicates the phylogenetic classification of the genes analysed in each row. The number of genes from each class (for example, plant-specific) that showed organ-preferential expression is indicated in the third column. The fourth column shows the percentage of genes that showed organ-preferential expression as compared to the total number of genes represented on Arabidopsis glass-slide microarrays for each class. The Ļ‡2 statistic and the p value are presented in the fifth and sixth columns, respectively.