A Novel Heat Shock Transcription Factor (<i>ZmHsf08</i>) Negatively Regulates Salt and Drought Stress Responses in Maize
Heat shock transcription factors (HSFs) play important roles in plant growth, development, and stress responses. However, the function of these transcription factors in abiotic stress responses in maize (<i>Zea mays</i>) remains largely unknown. In this study, we characterized a novel HS...
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/779f17ee536b4c4fb0392df49e239e29 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | Heat shock transcription factors (HSFs) play important roles in plant growth, development, and stress responses. However, the function of these transcription factors in abiotic stress responses in maize (<i>Zea mays</i>) remains largely unknown. In this study, we characterized a novel HSF transcription factor gene, <i>ZmHsf08</i>, from maize. <i>ZmHsf08</i> was highly homologous to SbHsfB1, BdHsfB1, and OsHsfB1, and has no transcriptional activation activity. The expression profiles demonstrated that <i>ZmHsf08</i> was differentially expressed in various organs of maize and was induced by salt, drought, and abscisic acid (ABA) treatment. Moreover, the overexpression of <i>ZmHsf08</i> in maize resulted in enhanced sensitivity to salt and drought stresses, displaying lower survival rates, higher reactive oxygen species (ROS) levels, and increased malondialdehyde (MDA) contents compared with wild-type (WT) plants. Furthermore, RT-qPCR analyses revealed that <i>ZmHsf08</i> negatively regulates a number of stress/ABA-responsive genes under salt and drought stress conditions. Collectively, these results indicate that <i>ZmHsf08</i> plays a negative role in response to salt and drought stresses in maize. |
|---|