Fig. 3
From: Molecular phylogeny and dynamic evolution of disease resistance genes in the legume family
The births and deaths of R-genes during the legume evolution. a A Venn diagram showing common R-genes among grape (V. vinifera), barrel clover (M. truncatula), wild soybean (G. soja), cultivated soybean (G. max) and common bean (P. vulgaris); b The birth and death rates of R-genes during the process of evolution. The red and green colors denote the expansion and contraction of R-gene numbers at each divergence event in the phylogenetic tree, respectively. MRCA, most recent common ancestor. mya: million years ago