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External source
Publication Title: 
Ma et al. (2020)
Title: 
Histone deacetylase gene PtHDT902 modifies adventitious root formation and negatively regulates salt stress tolerance in poplar.
Authors: 
Ma Xujun, Liang Xueying, Lv Shibo, Guan Tao, Jiang Tingbo, Cheng Yuxiang
Publication Year: 
2020
Series Name: 
Plant science : an international journal of experimental plant biology
Abstract: 
Histone deacetylases (HDACs) regulate gene transcription, and play a critical role in plant growth, development and stress responses. HD2 proteins are plant specific histone deacetylases. In woody plants, functions of HD2s are not known. In this study, we cloned an HD2 gene PtHDT902 from Populus trichocarpa and investigated its sequence, expression, subcellular localization, and functions in root development and salt stress responses. Our findings indicated that PtHDT902 was a nuclear protein and its expression was regulated by abiotic stresses. The over-expression of PtHDT902 in both Arabidopsis and poplar increased the expression levels of gibberellin (GA) biosynthetic genes. The expression of PtHDT902 in Arabidopsis enhanced primary root growth, and its over-expression in poplar inhibited adventitious root formation. These phenotypes resulted from over-expression of PtHDT902 were consistent with the GA-overproduction phenotypes. In addition, the poplar plants over-expressing PtHDT902 exhibited lower tolerance to salt than non-transgenic plants. These findings indicated that PtHDT902 worked as an important regulator in adventitious root formation and salt stress tolerance in poplar.
Volume: 
290
Issue: 
Page Numbers: 
110301
DOI: 
10.1016/j.plantsci.2019.110301
PubMed: 
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