Evolutionary dynamics of protein domain architecture in plants

Table 2 Angiosperm plants tend to integrate pre-existing domains into multi-domain architectures

		lineages		overall
	angiosperm	monocot	dicot	angiosperm^a
Single-domain	65 (46.7%)	51 (37.2%)	15 (30%)	1124771 (69.2%)^e
Newly emerged/existing domain^bc	33/32	11/40	12/3
Multiple-domain	74 (53.3%)	86 (62.8%)	35 (70%)	55402 (30.8%)^e
Newly emerged/existing domain^d	15/59	4/82	8/27
Chi-square test^f	0.015 (p = 0.7)	16.49 (p < 0.001)	5.4 (p < 0.05)
Chi-square test	26.16 (p < 0.001)	70.74 (p < 0.001)	10.91 (p < 0.001)
Chi-square test^h	23.75 (p < 0.001)	48.04 (p < 0.001)	72.09 (p < 0.001)

^aIncludes the 3 monocot species, Os, Zm, and Sb, and the 4 dicot species, Vv, At, Pt, and Gm.
^bNew domains are defined as domains that are not present in algal and early diverging lineages. Pre-existing are domains that are present in algal and early diverging lineages.
^cIndicates the numbers of new and pre-existing domains in single-domain architectures in the three lineages examined.
^dIndicates the numbers of new and pre-existing domains in multiple-domain architectures in the three lineages examined.
^eDenotes the sum and percentage of single-domain and multiple-domain architectures collectively from all 7 angiosperm species.
^fChi-square values for the expected ratios of 50% newly emerged: 50% existing domains in multiple-domain architectures in single-domain architectures.
^gChi-square values for the expected ratios of 50% newly emerged: 50% existing domains in multiple-domain architectures.
^hChi-sqaure values for the expected ratio of 69.2% single-domain architectures: 30.8% multipl-domain architectures.

ISSN: 2730-7182