title: The CLE gene family in Populus trichocarpa.
abstract: The CLE (CLAVATA3/Embryo Surrounding Region-related) peptides are small secreted signaling peptides that are primarily involved in the regulation of stem cell homeostasis in different plant meristems. Particularly, the characterization of the CLE41-PXY/TDR signaling pathway has greatly advanced our understanding on the potential roles of CLE peptides in vascular development and wood formation. Nevertheless, our knowledge on this gene family in a tree species is limited. In a recent study, we reported on a systematically investigation of the CLE gene family in Populus trichocarpa. The potential roles of PtCLE genes were studied by comparative analysis and transcriptional profiling. Among fifty PtCLE members, many PtCLE proteins share identical CLE motifs or contain the same CLE motif as that of AtCLEs, while PtCLE genes exhibited either comparable or distinct expression patterns comparing to their Arabidopsis counterparts. These findings indicate the existence of both functional conservation and functional divergence between PtCLEs and their AtCLE orthologues. Our results provide valuable resources for future functional investigations of these critical signaling molecules in woody plants.
authors.affiliation: a Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University , Xi'an , China.
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Liu
authors.affiliation: a Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University , Xi'an , China.
authors.forename: Nan
authors.initials: N
authors.lastname: Yang
authors.affiliation: a Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University , Xi'an , China.
authors.forename: Yanting
authors.initials: Y
authors.lastname: Lv
authors.affiliation: a Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University , Xi'an , China.
authors.forename: Lixia
authors.initials: L
authors.lastname: Pan
authors.affiliation: a Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University , Xi'an , China.
authors.forename: Shuo
authors.initials: S
authors.lastname: Lv
authors.affiliation: b Institute of Science and Technology Austria (IST Austria) , Klosterneuburg , Austria.
authors.forename: Huibin
authors.initials: H
authors.lastname: Han
authors.affiliation: a Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University , Xi'an , China.
authors.forename: Guodong
authors.initials: G
authors.lastname: Wang
mesh_terms: D020816:Amino Acid Motifs; D000595:Amino Acid Sequence; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D005810:Multigene Family; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D032107:Populus / Q000235:genetics*; D016415:Sequence Alignment
chemical_list: D010940:Plant Proteins
keywords: Arabidopsis thaliana; CLE peptide; Populus trichocarpa; vascular development; wood formation