Dopamine Alleviates Phloridzin Toxicity in Apple by Modifying Rhizosphere Bacterial Community Structure and Function.
J Agric Food Chem
; 72(23): 13001-13014, 2024 Jun 12.
Article
em En
| MEDLINE
| ID: mdl-38812066
ABSTRACT
Phloridzin significantly influences apple plant growth, development, and resistance to environmental stresses by engaging in various metabolic processes. Its excessive accumulation in soil, attributed to continuous monoculture practices, not only inhibits plant growth but also disrupts the rhizosphere microbial community. This study aims to explore the remedial effects of dopamine, a known antioxidant and stress resistance modulator in plants, on the adverse impacts of phloridzin stress in apple. Through hydroponic and pot experiments, it was demonstrated that dopamine significantly mitigates the growth inhibition caused by phloridzin stress in apple by reducing reactive oxygen species levels and enhancing photosynthesis and nitrogen transport. Additionally, dopamine reduced phloridzin concentrations in both the rhizosphere and roots. Furthermore, dopamine positively influences the structure of the rhizosphere microbial community, enriching beneficial microbes associated with nitrogen cycling. It increases the potential for soil nitrogen degradation and fixation by upregulating the abundance of ureC, GDH, and nifH, as revealed by metagenomic analysis. This aids in alleviating phloridzin stress. The study reveals dopamine's pivotal roles in modulating rhizosphere ecology under phloridzin stress and suggests its potential in sustainable apple cultivation practices to counter ARD and enhance productivity.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Florizina
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Microbiologia do Solo
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Bactérias
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Dopamina
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Raízes de Plantas
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Malus
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Rizosfera
Idioma:
En
Revista:
J Agric Food Chem
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China