GSK3/shaggy-like kinase 1 ubiquitously regulates cell growth from Arabidopsis to Moso bamboo (Phyllostachys edulis)
| Autor: | Qinzhen Li, Liuyin Ma, Qin Hu, Lingfang Peng, Yong Yang, Shuaitong Lou, Taotao Wang, Zezhong Lin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Bamboo Arabidopsis Dwarfism Plant Science 01 natural sciences Petiole (botany) 03 medical and health sciences chemistry.chemical_compound Glycogen Synthase Kinase 3 Brassinosteroids Genetics medicine Brassinosteroid Cloning Molecular Phylogeny Plant Proteins biology Cell growth Arabidopsis Proteins Nuclear Proteins General Medicine Sequence Analysis DNA biology.organism_classification medicine.disease Cell biology DNA-Binding Proteins 030104 developmental biology Phyllostachys edulis chemistry Signal transduction Sasa Agronomy and Crop Science Sequence Alignment 010606 plant biology & botany |
| Zdroj: | Plant science : an international journal of experimental plant biology. 283 |
| ISSN: | 1873-2259 |
| Popis: | Moso bamboo (Phyllostachys edulis) is one of the fastest growing species with a maximum growth rate of 1 m/day. However, the regulator genes for this explosive growth phenomenon have not been functionally studied. Here, we found that Moso bamboo GSK3/shaggy-like kinase 1 (PeGSK1) acts as a negative regulator of cell growth. Over-expression of PeGSK1 in Arabidopsis showed significant growth arrest phenotypes, including dwarfism, small leaves, reduced cell length, and disturbed cell elongation of petiole. Furthermore, Overexpression of PeGSK1 fully inhibited the longer hypocotyl phenotype of Arabidopsis atgsk1 mutants. In addition, PeGSK1-overexpressing lines were resistant to exogenous BR treatment and PeGSK1 interacted with the brassinosteroid signal transduction key regulator BZR1. The BZR1-dependent cell growth genes were down-regulated in PeGSK1-overexpressing lines. These results indicated that PeGSK1 is functionally similar to AtGSK1 and inhibited cell growth via the brassinosteroid signaling pathway. Importantly, PeGSK1 also interacted with PeBZR1, and the expression pattern of PeGSK1 was negatively correlated with the internode elongation of bamboo, indicating that PeGSK1 is involved in the cell growth of bamboo. In summary, our results provide insight into the role of brassinosteroids in the rapid-growth of bamboo culms and identifying target genes for the genetic manipulation of plant height. |
| Databáze: | OpenAIRE |
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