Fig. 4
From: Comprehensive identification and analysis of DELLA genes throughout the plant kingdom
DELLA domain and other fused domains in plant evolution. During the process of plant evolution, some genomes acquired DELLA and GRAS domains. Neither DELLA nor GRAS domains are found in some green algae, although there are GRAS domains in Spirogloea muscicola. Similarly, there are DELLA domains and GRAS domains in some mosses. The WW domain is integrated into an apple DELLA, but its GRAS domain is missing. A fusion of the F-box domain is found in a grape DELLA. In wild banana, the number of GRAS domains is tripled. A loss event of a DELLA domain appears to have happened in Picea abies