期刊
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
卷 190, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.envexpbot.2021.104587
关键词
Saline-alkali grassland; Puccinellia tenuiflora community; Suaeda glauca community; Elements; Metabolites
资金
- Fundamental Research Funds for the Central Universities [41420073]
- Basic work of science and technology [2015FY110500-13]
The study found that the aggravation of soil salinization and alkalization has led to an increase in diversity and succession among plant communities. Contrastive analysis was conducted on metabolites and mineral elements differences between two dominant communities, revealing some distinctions in terms of metabolites and mineral levels.
The aggravation of soil salinization and alkalization has resulted in the increase of diversity and succession among plant communities. In order to explore the adaptive strategy of the communities in such ecosystem, this study employed contrastive analysis on metabolites and mineral elements differences between two dominant communities in the study area, namely Puccinellia tenuiflora community (PC) and Suaeda glauca community (SC), the community succession of which was previously reported. The community succession (PC-*SC) represented deteriorative saline-alkali grassland. As a result, little distinction was revealed in terms of element levels. Specifically, only Ca level increased in SC stem compared with that of PC, while Fe levels in root decreased. On the other hand, major difference of metabolite results appeared in leaf. Increased sugar alcohols and decreased sugars were observed in leaf of SC comparing to PC. Importantly, most organic acids involved in TCA cycle, photorespiration, redox reactions and glycolysis accumulated significantly, which possibly suggests an enhancement in the flow of carbon from glycolysis to TCA cycle. In addition, the variation of a few phenols, such as reduced phenylpropanoids, may have promoted the metabolism of organic acid. Combined with the analysis of correlation-based network, it illustrates that central metabolism shifted from nitrogen metabolism to organic acid metabolism in community succession (PC-*SC).
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