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Effects of planting Melia azedarach L. on soil properties and microbial community in saline-alkali soil
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  • Na Li,
  • Tianyun Shao,
  • Yujie Zhou,
  • Huiying Hui,
  • Xiumei Gao,
  • Qingkai Sun,
  • Xiaohua Long,
  • Yang Yue,
  • Zed Rengel
Na Li
Nanjing Agricultural University
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Tianyun Shao
Nanjing Agricultural University
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Yujie Zhou
Nanjing Agricultural University
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Huiying Hui
Nanjing Agricultural University
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Xiumei Gao
Nanjing Agricultural University
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Qingkai Sun
Nanjing Agricultural University
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Xiaohua Long
Nanjing Agricultural University
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Yang Yue
Nanjing Agricultural University
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Zed Rengel
The University of Western Australia
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Abstract

Saline-alkali soils are widely distributed in China, affecting plant growth and sustainable development of ecosystems. This study characterized the effects of planting Melia azedarach L. on chemical properties and microbial communities in saline-alkali soils [bare (CK), bulk (BS) and rhizosphere soil (RS)]. Compared with the bare soil, planting Melia azedarach L. lowered salt content and concentrations of extractable Na, K, Ca, Mg and Cl-, but significantly increased organic matter, total nitrogen, total phosphorus, available phosphorus, soil urease activity and alkaline phosphatase activity in the rhizosphere soil. High-throughput sequencing results indicated that bacterial richness and diversity decreased in the order RS>BS>CK. The richness of fungi was ranked RS>CK>BS, and their diversity decreased in the order CK>RS>BS. The three dominant bacterial phyla were Proteobacteria, Actinobacteria and Bacteroidetes, and the three dominant fungal phyla were Ascomycota, Basidiomycota and Glomeromycota. Redundancy analysis indicated that total phosphorus concentration and alkaline phosphatase activity significantly influenced bacterial diversity, whereas soil Ca and Mg concentrations were closely related to the fungal community diversity. In conclusion, planting Melia azedarach L. improved soil properties, increased the diversity and richness of soil microbial communities, and thus ameliorated the saline-alkali soil.

Peer review status:ACCEPTED

16 Dec 2020Submitted to Land Degradation & Development
21 Dec 2020Submission Checks Completed
21 Dec 2020Assigned to Editor
27 Dec 2020Reviewer(s) Assigned
30 Dec 2020Review(s) Completed, Editorial Evaluation Pending
31 Dec 2020Editorial Decision: Revise Major
19 Jan 20211st Revision Received
20 Jan 2021Submission Checks Completed
20 Jan 2021Assigned to Editor
26 Jan 2021Review(s) Completed, Editorial Evaluation Pending
31 Jan 2021Editorial Decision: Revise Minor
06 Feb 20212nd Revision Received
08 Feb 2021Submission Checks Completed
08 Feb 2021Assigned to Editor
16 Feb 2021Review(s) Completed, Editorial Evaluation Pending
20 Feb 2021Editorial Decision: Revise Minor
02 Mar 20213rd Revision Received
02 Mar 2021Submission Checks Completed
02 Mar 2021Assigned to Editor
06 Mar 2021Review(s) Completed, Editorial Evaluation Pending
06 Mar 2021Editorial Decision: Revise Minor
08 Mar 20214th Revision Received
08 Mar 2021Submission Checks Completed
08 Mar 2021Assigned to Editor
10 Mar 2021Review(s) Completed, Editorial Evaluation Pending
10 Mar 2021Editorial Decision: Accept