Overexpression of LcMYB90 Transcription Factor Enhances Drought and Salt Tolerance in Blue Honeysuckle (<i>Lonicera caerulea</i> L.) and Tobacco (<i>Nicotiana tabacum</i> L.).

ABSTRACT: The MYB family plays a vital role in regulating plant stress resistance. However, the MYB protein in blue honeysuckle remains largely unexplored. In this study, the LcMYB90 gene from blue honeysuckle 'Lanjingling' was stably transformed into tobacco and transiently transformed into blue honeysuckle to characterize its function. Subcellular localization analysis revealed that the LcMYB90 protein is localized in the nucleus. Transgenic plants overexpressing LcMYB90 exhibited enhanced growth performance and higher survival rates under drought and salt stress conditions. These plants also showed increased levels of proline and chlorophyll, along with elevated activities of catalase, peroxidase, and superoxide dismutase. Conversely, malondialdehyde content and relative conductivit

SUBMITTER: Chen J 

PROVIDER: S-EPMC11988839 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature