Fig. 6
From: Expansion and evolutionary patterns of cysteine-rich peptides in plants
Analysis of positively selected CRP genes in pear. a Distribution of estimated amino acid sites; (b) Maximum Likelihood phylogenetic tree constructed using three positively selected CRP genes and eight closely-related homologous genes and their corresponding conserved domains; green, three pear CRP genes; violet, recent WGD events; (c) Expression pattern of three positively selected CRP genes during pear pollen development. HP, hydrated pollen; MP, mature pollen; PT, hydrated pollen tube; SPT, stopped pollen tube