Physiological and transcriptomic analysis reveals the potential mechanism of Morinda officinalis How in response to freezing stress.

ABSTRACT:

Background

Morinda officinalis How (MO) is a vine shrub distributed in tropical and subtropical regions, known as one of the "Four Southern Herbal Medicines" in China. The unclear responsive mechanism by which MO adapt to freezing stress limits progress in molecular breeding for MO freezing tolerance.

Results

In this study, morphological, physiological and microstructure changes in MO exposed to -2℃ for 0 h, 3 h, 8 h and 24 h were comprehensively characterized. The results showed that freezing stress caused seedling dehydration, palisade cell and spongy mesophyll destruction. A significant increase in the content of proline, soluble protein and soluble sugars, as well as the activity of superoxide dismutase and peroxidase was observed. Subsequently, we analyzed the transcrip

SUBMITTER: Luo Z 

PROVIDER: S-EPMC10591367 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature