Molecular Characterization of SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) Gene Family in Betula luminifera

Frontiers in Plant Science
Xiu-Yun LiJun-Hong Zhang

Abstract

As a major family of plant-specific transcription factors, SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) genes play vital regulatory roles in plant growth, development and stress responses. In this study, 18 SPL genes were identified and cloned from Betula luminifera. Two zinc finger-like structures and a nuclear location signal (NLS) segments were existed in the SBP domains of all BlSPLs. Phylogenetic analysis showed that these genes were clustered into nine groups (group I-IX). The intron/exon structure and motif composition were highly conserved within the same group. 12 of the 18 BlSPLs were experimentally verified as the targets of miR156, and two cleavage sites were detected in these miR156-targeted BlSPL genes. Many putative cis-elements, associated with light, stresses and phytohormones response, were identified in the promoter regions of BlSPLs, suggesting that BlSPL genes are probably involved in important physiological processes and developmental events. Tissue-specific expression analysis showed that miR156-targeted BlSPLs exhibited a more differential expression pattern, while most miR156-nontargeted BlSPLs tended to be constitutively expressed, suggesting the distinct roles of miR156-targeted and nontargeted BlSPLs...Continue Reading

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Citations

Mar 19, 2020·International Journal of Molecular Sciences·Jingyi MaHuihong Guo
Jan 8, 2020·International Journal of Molecular Sciences·Yuanyuan JiangYongshun Gao
Apr 9, 2021·Physiologia Plantarum·Jitendra KumarNarendra Pratap Singh
Aug 8, 2021·International Journal of Molecular Sciences·Yao CaoXiao-Yan Cao
Nov 16, 2021·Molecular Genetics and Genomics : MGG·Mengna ZhaoKezhong Zhang

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Datasets Mentioned

BETA
MF149049

Methods Mentioned

BETA
transgenic
two-hybrid
electrophoresis
PCR
reverse transcription-PCR
two hybrid
protein interaction assay

Software Mentioned

TBLASTN
FGENESH
Compute p I / Mw
ExPASy
psRNATarget
AlignX
MEGA7
MEGA
PlantCARE
MEME

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