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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Terrestrial Microbiology
Volume 15 - 2024 | doi: 10.3389/fmicb.2024.1481156

The response of soil microbial community to application of organic amendment to saline land

Provisionally accepted
Peifei Cong Peifei Cong 1Pengfei Huang Pengfei Huang 2*Zhisheng Huang Zhisheng Huang 1*
  • 1 VU Amsterdam, Amsterdam, Netherlands
  • 2 Chinese Academy of Agricultural Sciences (CAAS), Beijing, Beijing Municipality, China

The final, formatted version of the article will be published soon.

    The salinization of coastal soils is a primary cause of global land degradation. The aim of this study was to evaluate the effect of organic amendment on the soil microbial community within a saline gradient. The study was designed with five levels of electrical conductivity (EC): 0.33, 0.62, 1.13, 1.45 and 2.04 ds m -1 . Compared with the control, higher OM content, total N, and higher crop biomass were observed in samples with organic amendment at the same salinity level. At the same salinity levels, the mean bacterial activity (AUC) and the mean number of substrates were higher than in the soil without organic amendment according to analyses by means of Biolog ECO MicroPlate. The results of canonical correspondence analysis indicate that after the application of organic amendments, the composition of loam and clay replaces soil pH, and aboveground biomass replaces root biomass as key indicators closely monitoring Community level physiological profiling (CLPP). In soil with the same salinity level, the application of microbial organic fertilizer led to an increase in the proportion of Actinobacteriota and a decrease in the proportion of Chloroflexi. In 0.3dS m -1 soil, the abundance of actinomycetes increased from 23% to 27% after application of microbial organic fertilizer, while the abundance of basidiomycetes decreased from 20% to 6%. In addition, after the application of microbial organic fertilizer, RB41, blastococcus and solirubrobacter significantly increased, while Melothermus and Herpetosiphon significantly decreased.

    Keywords: functional diversity, Salinity increase, Organic remediation, Community level physiological profile, microbial community

    Received: 16 Aug 2024; Accepted: 04 Dec 2024.

    Copyright: © 2024 Cong, Huang and Huang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Pengfei Huang, Chinese Academy of Agricultural Sciences (CAAS), Beijing, 100081, Beijing Municipality, China
    Zhisheng Huang, VU Amsterdam, Amsterdam, Netherlands

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.