Overexpression of the HDA15 Gene Confers Resistance to Salt Stress by the Induction of NCED3, an ABA Biosynthesis Enzyme
| Autor: | Won Je Lee, Seokjin Lee, Hojoung Lee, Hai An Truong, Eui Hwan Chung, Cao Son Trịnh, Suk Whan Hong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
biology
stress tolerance Chemistry Abiotic stress fungi Arabidopsis HDA15 gene food and beverages Plant culture Endogeny Plant Science Genetically modified crops biology.organism_classification Hypocotyl Cell biology salinity ABA accumulation SB1-1110 chemistry.chemical_compound Seedling Transcription (biology) histone modification Abscisic acid Original Research |
| Zdroj: | Frontiers in Plant Science, Vol 12 (2021) Frontiers in Plant Science |
| DOI: | 10.3389/fpls.2021.640443/full |
| Popis: | Salt stress constitutes a major form of abiotic stress in plants. Histone modification plays an important role in stress tolerance, with particular reference to salt stress resistance. In the current study, we found that HDA15 overexpression confers salt stress resistance to young seedling stages of transgenic plants. Furthermore, salt stress induces HDA15 overexpression. Transcription levels of stress-responsive genes were increased in transgenic plants overexpressing HDA15 (HDA15 OE). NCED3, an abscisic acid (ABA) biosynthetic gene, which is highly upregulated in HDA15 transgenic plants, enhanced the accumulation of ABA, which promotes adaptation to salt stress. ABA homeostasis in HDA15 OE plants is maintained by the induction of CYP707As, which optimize endogenous ABA levels. Lastly, we found that the double-mutant HDA15 OE/hy5 ko plants are sensitive to salt stress, indicating that interaction between HDA15 and ELONGATED HYPOCOTYL 5 (HY5) is crucial to salt stress tolerance shown by HDA15 OE plants. Thus, our findings indicate that HDA15 is crucial to salt stress tolerance in Arabidopsis. |
| Databáze: | OpenAIRE |
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