Genome-wide Identification and Characterization of G-type lectin in Fragaria Vesca

Background: Lectins make up a large and diverse group of proteins in plants. G-type lectins are important type of lectins involved in plant development and defense process. However, studies about G-type lectins are limited to lectin receptor kinases. Results: In this study, genome-wide identification was carried out on G-type lectin gene family in Fragaria vesca . A total of 133 genes were found belonging to this family and they were classified into four groups: G-type lectin receptor kinases, G-type lectin kinases, G-type lectin receptor proteins and G-type lectin proteins, according to their domain organizations. Their chromosome localization, phylogenetic and evolutionary relationship were also analyzed. The results showed that tandem and dispersed duplication occurred frequently, which led to the expansion of G-type lectin gene family in F. vesca and may have increased the types of domain arrangement. The expression profile of G-type lectin genes at different developmental stages of F. vesca and under various biotic/abiotic stresses was inferred from the available databases. G-type lectin genes are actively expressed during F. vesca development and respond to multiple biotic/abiotic stresses. Additionally, to comprehend the functions of G-type lectins, we predicted strawberry genes that may co-express with these G-type lectin genes. Conclusions: G-type lectin gene family is a large gene family in F. vesca . Domain organization and expression analysis imply their functions under biotic/abiotic stresses.