Sophora tonkinensis: response and adaptation of physiological characteristics, functional traits, and secondary metabolites to drought stress.
Sophora tonkinensis
alkaloid content
biomass
drought stress
physiological characteristics
tissue structure
Journal
Plant biology (Stuttgart, Germany)
ISSN: 1438-8677
Titre abrégé: Plant Biol (Stuttg)
Pays: England
ID NLM: 101148926
Informations de publication
Date de publication:
Dec 2023
Dec 2023
Historique:
received:
22
05
2023
accepted:
21
08
2023
medline:
13
11
2023
pubmed:
10
10
2023
entrez:
10
10
2023
Statut:
ppublish
Résumé
The medicinal plant Sophora tonkinensis is a characteristic Chinese shrub of karst areas. The arid climate in karst areas produces high-quality S. tonkinensis; however, the mechanisms of drought tolerance are not clear, which restricts sustainable plantings of S. tonkinensis. This study involved a 20-day drought stress experiment with potted S. tonkinensis and threee soil water regimes: control (CK), mild drought (MDT), and severe drought (SDT). Plant morphology, biomass, physiological indicators, alkaloid content, and other changes under drought stress were monitored. The content of soluble sugars and proteins, and activity of antioxidant enzymes in leaves and roots were higher under drought than CK, indicating that S. tonkinensis is tolerant to osmotic stress in early drought stages. Content of matrine and oxymatrine increased gradually with increasing drought duration in the short term. The epidermis of S. tonkinensis leaves have characteristics of desert plants, including upper epidermal waxy layer, lower epidermal villi, and relatively sunken stomata, suggesting that S. tonkinensis has strong drought tolerance. In conclusion, drought stress changed the cell structure of S. tonkinensis, induced antioxidant enzyme activity and increased its resistance to drought.
Substances chimiques
Antioxidants
0
Alkaloids
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1109-1120Subventions
Organisme : National Natural Science Foundation of China
ID : 82060689
Organisme : Guangxi Science and Technology Project
ID : GuiKe AD22080012
Organisme : Guangxi Natural Science Foundation
ID : 2021GXNSFAA196054
Organisme : Guangxi Natural Science Foundation
ID : 2020GXNSFAA297069
Organisme : Guangxi Natural Science Foundation
ID : 2020GXNSFBA159018
Informations de copyright
© 2023 Wiley-VCH GmbH. Published by John Wiley & Sons Ltd.
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