Contribution of transcriptional regulation to natural variations in Arabidopsis

Table 3 Correlation analysis of expression patterns of genes among the five accessions

	Per 1	Per 2	Per 3	Per 4	Per 5	Per 6	Per 7	Per 8	Per 9	Per 10	Average of Per	Observed
10	141	133	127	129	129	130	139	121	130	125	130.4	65
9	263	263	246	268	281	285	271	295	273	259	270.4	271
8	324	324	341	323	336	320	307	324	319	359	327.7	376
7	1555	1555	1542	1539	1499	1508	1541	1524	1521	1505	1528.9	399
6	1523	1523	1575	1505	1515	1547	1557	1495	1524	1539	1530.3	412
5	603	603	590	617	607	629	609	642	632	577	610.9	416
4	692	692	661	725	724	660	668	669	715	719	692.5	471
3	441	441	441	436	440	457	461	457	424	441	443.9	438
2	345	345	375	334	341	351	340	355	357	359	350.2	528
1	360	360	365	382	362	329	345	350	358	350	356.1	600
0	1261	1261	1245	1250	1274	1292	1270	1276	1255	1275	1265.9	3532
	7508	7500	7508	7508	7508	7508	7508	7508	7508	7508		7508

For each gene, the Pearson correlation coefficient was calculated for all the 10 pairwise comparisons among the five accessions, as described in Materials and methods. Genes were then grouped into 11 groups (0-10) according to the number of comparisons having correlation coefficients less than 0.5 (group 10 corresponds to the genes with r < 0.5 from all 10 pairwise comparisons, whereas group 0 corresponds to genes with r ≥ 0.5 from all 10 pairwise comparisons). These results are given in the Observed column. Columns Per 1 to Per 10 show the numbers of genes from the 10 permuted datasets, as described in Materials and methods. These results are visualized in Figure 2.

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