Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms
Phytoremediation is an effective means to improve degraded soil nutrients and soil structure. Here, we investigated the remediation effects of Leymus chinensis on the physicochemical properties and structure of degraded soil after 3 years of cultivation and explored the bacterial and fungal drivers...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-12-01
|
| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2022.951838/full |
| _version_ | 1811179309810843648 |
|---|---|
| author | Yulong Lin Linlin Mei Qianhao Wei Bing Li Pan Zhang Shixuan Sun Guowen Cui |
| author_facet | Yulong Lin Linlin Mei Qianhao Wei Bing Li Pan Zhang Shixuan Sun Guowen Cui |
| author_sort | Yulong Lin |
| collection | DOAJ |
| description | Phytoremediation is an effective means to improve degraded soil nutrients and soil structure. Here, we investigated the remediation effects of Leymus chinensis on the physicochemical properties and structure of degraded soil after 3 years of cultivation and explored the bacterial and fungal drivers in root exudates by metabolomics and high-throughput sequencing. The results showed that root exudates increased soil organic matter (SOM), total nitrogen (TN), total phosphorus (TP) and soil aggregates, and organic acids in root exudates reduced pH and activated insoluble nutrients into forms that are available to plants, such as available nitrogen (NH4+-N), nitrate nitrogen (NO3−-N), and available phosphorus (AP). The cultivation of L. chinensis restored the diversity and richness of soil microorganisms and recruited potential beneficial bacteria and fungi to resist degraded soil stress, and L. chinensis also regulated the abundances of organic acids, amino acids and fatty acids in root exudates to remediate degraded soils. Spearman correlation analysis indicated that glutaric acid, 3-hydroxybutyric acid and 4-methylcatechol in root exudates attracted Haliangium, Nitrospira and Mortierella to the rhizosphere and dispersed the relative abundance of the harmful microorganisms Fusicolla and Fusarium. Our results demonstrate that L. chinensis enhances soil fertility, improves soil structure, promotes microbial diversity and abundance, and recruits potentially beneficial microorganisms by modulating root exudate components. |
| first_indexed | 2024-04-11T06:33:44Z |
| format | Article |
| id | doaj.art-6abe36929af144a4b199a33d02224b1d |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-11T06:33:44Z |
| publishDate | 2022-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-6abe36929af144a4b199a33d02224b1d2022-12-22T04:39:55ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-12-011310.3389/fmicb.2022.951838951838Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganismsYulong LinLinlin MeiQianhao WeiBing LiPan ZhangShixuan SunGuowen CuiPhytoremediation is an effective means to improve degraded soil nutrients and soil structure. Here, we investigated the remediation effects of Leymus chinensis on the physicochemical properties and structure of degraded soil after 3 years of cultivation and explored the bacterial and fungal drivers in root exudates by metabolomics and high-throughput sequencing. The results showed that root exudates increased soil organic matter (SOM), total nitrogen (TN), total phosphorus (TP) and soil aggregates, and organic acids in root exudates reduced pH and activated insoluble nutrients into forms that are available to plants, such as available nitrogen (NH4+-N), nitrate nitrogen (NO3−-N), and available phosphorus (AP). The cultivation of L. chinensis restored the diversity and richness of soil microorganisms and recruited potential beneficial bacteria and fungi to resist degraded soil stress, and L. chinensis also regulated the abundances of organic acids, amino acids and fatty acids in root exudates to remediate degraded soils. Spearman correlation analysis indicated that glutaric acid, 3-hydroxybutyric acid and 4-methylcatechol in root exudates attracted Haliangium, Nitrospira and Mortierella to the rhizosphere and dispersed the relative abundance of the harmful microorganisms Fusicolla and Fusarium. Our results demonstrate that L. chinensis enhances soil fertility, improves soil structure, promotes microbial diversity and abundance, and recruits potentially beneficial microorganisms by modulating root exudate components.https://www.frontiersin.org/articles/10.3389/fmicb.2022.951838/fullforage grassstress responseroot exudatesmicrobial communitymetabolomics |
| spellingShingle | Yulong Lin Linlin Mei Qianhao Wei Bing Li Pan Zhang Shixuan Sun Guowen Cui Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms Frontiers in Microbiology forage grass stress response root exudates microbial community metabolomics |
| title | Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms |
| title_full | Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms |
| title_fullStr | Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms |
| title_full_unstemmed | Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms |
| title_short | Leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms |
| title_sort | leymus chinensis resists degraded soil stress by modulating root exudate components to attract beneficial microorganisms |
| topic | forage grass stress response root exudates microbial community metabolomics |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2022.951838/full |
| work_keys_str_mv | AT yulonglin leymuschinensisresistsdegradedsoilstressbymodulatingrootexudatecomponentstoattractbeneficialmicroorganisms AT linlinmei leymuschinensisresistsdegradedsoilstressbymodulatingrootexudatecomponentstoattractbeneficialmicroorganisms AT qianhaowei leymuschinensisresistsdegradedsoilstressbymodulatingrootexudatecomponentstoattractbeneficialmicroorganisms AT bingli leymuschinensisresistsdegradedsoilstressbymodulatingrootexudatecomponentstoattractbeneficialmicroorganisms AT panzhang leymuschinensisresistsdegradedsoilstressbymodulatingrootexudatecomponentstoattractbeneficialmicroorganisms AT shixuansun leymuschinensisresistsdegradedsoilstressbymodulatingrootexudatecomponentstoattractbeneficialmicroorganisms AT guowencui leymuschinensisresistsdegradedsoilstressbymodulatingrootexudatecomponentstoattractbeneficialmicroorganisms |