Transcriptome and Metabolome Reveal Salt-Stress Responses of Leaf Tissues from Dendrobium officinale
| Autor: | Chunmei He, Zhenming Yu, Can Si, Jun Duan, Conghui Zhao, Danqi Zeng, Chuanmao Li, M. Zhang, Haobin Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cyclopentanes 01 natural sciences Biochemistry Microbiology Article Transcriptome 03 medical and health sciences chemistry.chemical_compound Metabolomics Biosynthesis Metabolome Oxylipins Molecular Biology salt stress Jasmonic acid Dendrobium officinale jasmonic acid food and beverages Metabolism QR1-502 Biosynthetic Pathways Plant Leaves Metabolic pathway 030104 developmental biology Flavonoid biosynthesis chemistry flavonoids metabolome Dendrobium transcriptome 010606 plant biology & botany |
| Zdroj: | Biomolecules, Vol 11, Iss 736, p 736 (2021) Biomolecules Volume 11 Issue 5 |
| Popis: | Dendrobium officinale Kimura et Migo is a precious traditional Chinese medicine. Despite D. officinale displaying a good salt-tolerance level, the yield and growth of D. officinale were impaired drastically by the increasing soil secondary salinization. The molecular mechanisms of D. officinale plants’ adaptation to salt stress are not well documented. Therefore, in the present study, D. officinale plants were treated with 250 mM NaCl. Transcriptome analysis showed that salt stress significantly altered various metabolic pathways, including phenylalanine metabolism, flavonoid biosynthesis, and α-linolenic acid metabolism, and significantly upregulated the mRNA expression levels of DoAOC, DoAOS, DoLOX2S, DoMFP, and DoOPR involved in the jasmonic acid (JA) biosynthesis pathway, as well as rutin synthesis genes involved in the flavonoid synthesis pathway. In addition, metabolomics analysis showed that salt stress induced the accumulation of some compounds in D. officinale leaves, especially flavonoids, sugars, and alkaloids, which may play an important role in salt-stress responses of leaf tissues from D. officinale. Moreover, salt stress could trigger JA biosynthesis, and JA may act as a signal molecule that promotes flavonoid biosynthesis in D. officinale leaves. To sum up, D. officinale plants adapted to salt stress by enhancing the biosynthesis of secondary metabolites. |
| Databáze: | OpenAIRE |
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