TY - JOUR
T1 - Ancient duplications and grass-specific transposition influenced the evolution of LEAFY transcription factor genes
AU - Gao, Bei
AU - Chen, Moxian
AU - Li, Xiaoshuang
AU - ZHANG, Jianhua
N1 - Funding Information:
This work was supported by Hong Kong Research Grant Council (GRF 12100318, AoE/M-05/12 and AoE/M-403/16) and the NSFC-Xinjiang Key Project (U1703233). Dr. Melvin J. Oliver (Plant Genetics Research Unit, USDA-ARS) provided critical comments and edited the language for the manuscript. We thank the School of Life Sciences of the Chinese University of Hong Kong for providing the computational resources.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The LFY transcription factor gene family are important in the promotion of cell proliferation and floral development. Understanding their evolution offers an insight into floral development in plant evolution. Though a promiscuous transition intermediate and a gene duplication event within the LFY family had been identified previously, the early evolutionary path of this family remained elusive. Here, we reconstructed the LFY family phylogeny using maximum-likelihood and Bayesian inference methods incorporating LFY genes from all major lineages of streptophytes. The well-resolved phylogeny unveiled a high-confidence duplication event before the functional divergence of types I and II LFY genes in the ancestry of liverworts, mosses and tracheophytes, supporting sub-functionalization of an ancestral promiscuous gene. The identification of promiscuous genes in Osmunda suggested promiscuous LFY genes experienced an ancient transient duplication. Genomic synteny comparisons demonstrated a deep genomic positional conservation of LFY genes and an ancestral lineage-specific transposition activity in grasses.
AB - The LFY transcription factor gene family are important in the promotion of cell proliferation and floral development. Understanding their evolution offers an insight into floral development in plant evolution. Though a promiscuous transition intermediate and a gene duplication event within the LFY family had been identified previously, the early evolutionary path of this family remained elusive. Here, we reconstructed the LFY family phylogeny using maximum-likelihood and Bayesian inference methods incorporating LFY genes from all major lineages of streptophytes. The well-resolved phylogeny unveiled a high-confidence duplication event before the functional divergence of types I and II LFY genes in the ancestry of liverworts, mosses and tracheophytes, supporting sub-functionalization of an ancestral promiscuous gene. The identification of promiscuous genes in Osmunda suggested promiscuous LFY genes experienced an ancient transient duplication. Genomic synteny comparisons demonstrated a deep genomic positional conservation of LFY genes and an ancestral lineage-specific transposition activity in grasses.
UR - http://www.scopus.com/inward/record.url?scp=85071018889&partnerID=8YFLogxK
U2 - 10.1038/s42003-019-0469-4
DO - 10.1038/s42003-019-0469-4
M3 - Article
C2 - 31263781
AN - SCOPUS:85071018889
SN - 2399-3642
VL - 2
JO - Communications Biology
JF - Communications Biology
IS - 1
M1 - 237
ER -