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Widely-Targeted Metabolic Profiling in Lycium barbarum Fruits under Salt-Alkaline Stress Uncovers Mechanism of Salinity Tolerance

文献类型： 外文期刊

作者： Liang, Xiaojie 1 ; Wang, Yajun 1 ; Li, Yuekun 1 ; An, Wei 1 ; He, Xinru 1 ; Chen, Yanzhen 1 ; Shi, Zhigang 2 ; He, Jun 1 ; Wan, Ru 1 ;

作者机构： 1.Natl Wolfberry Engn Res Ctr, Yinchuan 750002, Ningxia, Peoples R China

2.Ningxia Acad Agr & Forestry Sci, Yinchuan 750002, Ningxia, Peoples R China

关键词： metabolomics; nutritional quality; abiotic stress; goji berry

期刊名称：MOLECULES （ 影响因子：4.927； 五年影响因子：5.11 ）

ISSN：

年卷期： 2022 年 27 卷 5 期

页码：

收录情况： SCI

摘要： Wolfberry (Lycium barbarum L.) is an important economic crop widely grown in China. The effects of salt-alkaline stress on metabolites accumulation in the salt-tolerant Ningqi1 wolfberry fruits were evaluated across 12 salt-alkaline stress gradients. The soil pH, Na+, K+, Ca2+, Mg-2+,Mg- and HCO3- contents decreased at a gradient across the salt-alkaline stress gradients. Based on the widely-targeted metabolomics approach, we identified 457 diverse metabolites, 53% of which were affected by salt-alkaline stress. Remarkably, soil salt-alkaline stress enhanced metabolites accumulation in wolfberry fruits. Amino acids, alkaloids, organic acids, and polyphenols contents increased proportionally across the salt-alkaline stress gradients. In contrast, nucleic acids, lipids, hydroxycinnamoyl derivatives, organic acids and derivatives and vitamins were significantly reduced by high salt-alkaline stress. A total of 13 salt-responsive metabolites represent potential biomarkers for salt-alkaline stress tolerance in wolfberry. Specifically, we found that constant reductions of lipids and chlorogenic acids; up-regulation of abscisic acid and accumulation of polyamines are essential mechanisms for salt-alkaline stress tolerance in Ningqi1. Overall, we provide for the first time some extensive metabolic insights into salt-alkaline stress tolerance and key metabolite biomarkers which may be useful for improving wolfberry tolerance to salt-alkaline stress.

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