Physiological and transcriptomic analysis of the mangrove species Kandelia obovata in response to flooding stress.
Mar Pollut Bull
; 196: 115598, 2023 Nov.
Article
em En
| MEDLINE
| ID: mdl-37839131
ABSTRACT
Flooding stress on mangroves is growing continually with rising sea level. In this study, the physiology and transcriptome of the mangrove species Kandelia obovata under flooding stress were analyzed. With increasing inundation time, malondialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), soluble sugar (SS), soluble protein (SP), and proline (Pro) content declined, while peroxidase (POD) and ascorbate peroxidase (APX) activity rose significantly. According to the KEGG pathway enrichment analysis, upregulated differentially expressed genes (DEGs) were enriched in the plant hormone signaling pathway. Furthermore, MYB44 and MYB108 genes from the MYB transcription factor family and RAP2.12, DREB2B, and ERF4 genes from the AP2/ERF family were up-regulated under flooding conditions. A strong correlation was established between the expression levels of 12 DEGs under flooding stress and RNA sequencing data and was verified by qRT-PCR. These results provide new insights into the molecular mechanism of K. obovata in response to flooding stress.
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MEDLINE
Assunto principal:
Rhizophoraceae
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article