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DOI10.1016/j.jhazmat.2024.133601
Biochemical and multi-omics analyses of response mechanisms of rhizobacteria to long-term copper and salt stress: Effect on soil physicochemical properties and growth of Avicennia marina
Shang, Chenjing; Chen, Jiawen; Nkoh, Jackson Nkoh; Wang, Junjie; Chen, Si; Hu, Zhangli; Hussain, Quaid
发表日期2024
ISSN0304-3894
EISSN1873-3336
起始页码466
卷号466
英文摘要Mangroves are of important economic and environmental value and research suggests that their carbon sequestration and climate change mitigation potential is significantly larger than other forests. However, increasing salinity and heavy metal pollution significantly affect mangrove ecosystem function and productivity. This study investigates the tolerance mechanisms of rhizobacteria in the rhizosphere of Avicennia marina under salinity and copper (Cu) stress during a 4-y stress period. The results exhibited significant differences in antioxidant levels, transcripts, and secondary metabolites. Under salt stress, the differentially expressed metabolites consisted of 30% organic acids, 26.78% nucleotides, 16.67% organic heterocyclic compounds, and 10% organic oxides as opposed to 27.27% organic acids, 24.24% nucleotides, 15.15% organic heterocyclic compounds, and 12.12% phenyl propane and polyketides under Cu stress. This resulted in differential regulation of metabolic pathways, with phenylpropanoid biosynthesis being unique to Cu stress and alanine/aspartate/glutamate metabolism and alpha-linolenic acid metabolism being unique to salt stress. The regulation of metabolic pathways enhanced antioxidant defenses, nutrient recycling, accumulation of osmoprotectants, stability of plasma membrane, and chelation of Cu, thereby improving the stress tolerance of rhizobacteria and A. marina. Even though the abundance and community structure of rhizobacteria were significantly changed, all the samples were dominated by Proteobacteria, Chloroflexi, Actinobacteriota, and Firmicutes. Since the response mechanisms were unbalanced between treatments, this led to differential growth trends for A. marina. Our study provides valuable inside on variations in diversity and composition of bacterial community structure from mangrove rhizosphere subjected to long-term salt and Cu stress. It also clarifies rhizobacterial adaptive mechanisms to these stresses and how they are important for mitigating abiotic stress and promoting plant growth. Therefore, this study can serve as a reference for future research aimed at developing long-term management practices for mangrove forests.
英文关键词Heavy metal pollution; Salinity; Transcriptomic; Metabolome; Antioxidant enzymes
语种英语
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS类目Engineering, Environmental ; Environmental Sciences
WOS记录号WOS:001178307400001
来源期刊JOURNAL OF HAZARDOUS MATERIALS
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/302681
作者单位Shenzhen University; Chinese Academy of Sciences; Institute of Deep-Sea Science & Engineering, CAS; Shenzhen University
推荐引用方式
GB/T 7714
Shang, Chenjing,Chen, Jiawen,Nkoh, Jackson Nkoh,et al. Biochemical and multi-omics analyses of response mechanisms of rhizobacteria to long-term copper and salt stress: Effect on soil physicochemical properties and growth of Avicennia marina[J],2024,466.
APA Shang, Chenjing.,Chen, Jiawen.,Nkoh, Jackson Nkoh.,Wang, Junjie.,Chen, Si.,...&Hussain, Quaid.(2024).Biochemical and multi-omics analyses of response mechanisms of rhizobacteria to long-term copper and salt stress: Effect on soil physicochemical properties and growth of Avicennia marina.JOURNAL OF HAZARDOUS MATERIALS,466.
MLA Shang, Chenjing,et al."Biochemical and multi-omics analyses of response mechanisms of rhizobacteria to long-term copper and salt stress: Effect on soil physicochemical properties and growth of Avicennia marina".JOURNAL OF HAZARDOUS MATERIALS 466(2024).
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