Anthocyanin biosynthetic genes in Brassica rapa

BMC Genomics

Table 3 Number and ratio of single copy to multiple copy paralogs of AtABGs

	No. of paralogs with different copies^a					Ratio of single to multiple copies^b	P-value^c
	0	One	Two	Three	Total	Ratio of single to multiple copies^b	P-value^c
Structural genes	1	12	3	5	21	12:8	0.8987
Regulatory genes	2	2	8	2	14	2:10	0.0019*
Transport genes	0	0	1	0	1	0:1	0.7728
Total	3	14	12	7	36	14:19	0.0173*

^aThe number of A. thaliana paralogs with different syntenic copies distributed in one to three subgenomes. “0” means the paralogs have no syntenic orthologs in B. rapa. Tandemly duplicated genes represent one paralog.
^bThe ratio of single to multiple copies is the number of paralogs having one copy versus the total number of paralogs with two and three copies.
^cThe proportion of total paralogous sets with different copy numbers over the whole genome was used as a background to calculate the P-value using Fisher’s test. The “*” represents a P-value less than 0.05, which means the ratio of single to multiple copies of these kinds of anthocyanin pathway genes shows a significant difference from the background.

ISSN: 1471-2164