Molecular Cloning, Transcriptional Profiling, Subcellular Localization, and miRNA-Binding Site Analysis of Six SCL9 Genes in Poplar

The SCL9 subfamily is a key member of the GRAS family that regulates plant development and stress responses. Nevertheless, the functional role of these genes in the growth and development of poplar still unclear. Here, we reported the six SCL9 genes, which were found to be differentially expressed d...

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Bibliographic Details
Published in:Plants (Basel) 2021-06, Vol.10 (7), p.1338
Main Authors: Zhao, Meiqi, Xuan, Lei, Qi, Haoran, Shen, Tengfei, Xu, Meng
Format: Article
Language:English
Subjects:
adventitious root
Amino acids
Binding sites
Cloning
Gene expression
Genes
Genomes
Genomics
Introns
Localization
microRNA396
MicroRNAs
miRNA
Morphogenesis
Phylogenetics
Poplar
Proteins
Protoplasts
SCL9 subfamily
Signal transduction
subcellular localization
Transcription
Transcription factors
‘Nanlin895’ poplar
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Summary:The SCL9 subfamily is a key member of the GRAS family that regulates plant development and stress responses. Nevertheless, the functional role of these genes in the growth and development of poplar still unclear. Here, we reported the six SCL9 genes, which were found to be differentially expressed during poplar adventitious root formation. The full-length sequences of PeSCL9 genes of ‘Nanlin895’ poplar (Populus deltoids × Populus euramericana) were cloned by the RACE technique All PeSCL9 genes lacked introns. RT-qPCR revealed that PeSCL9 genes displayed a dynamic expression pattern in the adventitious root of poplar, according to RT-qPCR data. A series of comprehensive genes characteristics analysis were carried out for six genes by bioinformation. Meanwhile, transient expression analysis of the Populus protoplasts showed that all the PeSCL9 proteins were localized in the nucleus. In addition, the degradome and sRNA of ‘Nanlin895’ poplar in combination were used to predict miRNAs that regulate PeSCL9. It was found that miR396a and miR396c may affect PeSCL9 expression via cleavage, which was further verified by a transient expression experiment in Populus protoplasts. Overall, the development of poplar adventitious root and other tissues was closely related to these six SCL9 genes, and they serve as a starting point for further research into the mechanisms regulating poplar growth and development.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants10071338