Expansion and evolutionary patterns of GDSL-type esterases/lipases in Rosaceae genomes
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GDSL-type esterase/lipase (GELP) is mainly characterized by a conserved GDSL domain at N terminus, and is widely found in all living species, both prokaryotes and eukaryotes. GELP gene family consists of a wide range of members playing important roles in plant physiological processes, such as development, stress responses, and functional divergences. In our study, 597 GELP genes were identified from six Rosaceae genomes (i.e., Fragaria vesca, Prunus persica, Prunus avium, Prunus mume, Pyrus bretschneideri, and Malus domestica) by a comprehensive analysis. All GELP genes were further divided into ten subfamilies based on phylogenetic tree analysis. Subfamily D and subfamily E are the two largest subfamilies. Microcollinearity analysis suggested that WGD/segmental events contribute to the expansion of the GELP gene family in M. domestica and P. bretschneideri compared to F. vesca, P. persica, P. avium, and P. mume. Some PbGELPs were expressed during the fruit development of P. bretschneideri and pollen tubes, indicating their activity in these tissues. The expression divergence of PbGELP duplication gene pairs suggests that many mutations were allowed during evolution, although the structure of GELP genes was highly conserved. The current study results provided the feasibility to understand the expansion and evolution patterns of GELP in Rosaceae genomes, and highlight the function during P. bretschneideri fruits and pollen tubes development.
KeywordsGDSL-type esterases/lipases Duplication modes Expression Pollen development
We extend our thanks to the reviewers and editors for their careful reading and helpful comments on this manuscript.
YCao designed and performed the experiments. YCao, DM, and YH analyzed the data. YH, DM, YL, QJ, DL, JY, YCao, AM, and YCai contributed reagents/materials/analysis tools. YCao and YH wrote the paper. All authors reviewed and approved this submission.
This study was supported by The National Natural Science Foundation of China (grant 31640068).
Compliance with ethical standards
The authors declare that they have no competing interests.
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