Soil microbial community structure and environmental effects of serpentine weathering under different vegetative covers in the serpentine mining area of Donghai County, China

Lu, Meixi; Wang, Xingxing; Liu, Ying; Liu, Hailong; An, Xiaochi; Lian, Bin

doi:10.1016/j.scitotenv.2022.155452

Cited by 10 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The application of organic fertilizer combined with river-sand and serpentine, as the sample of SS, highlights the crystal peak of serpentine in soil mineral crystals ( Figure S1 ). According to the results of the mineral chemical composition analysis (based on X-ray fluorescence) of serpentine in the serpentine mining area of Donghai County, Jiangsu Province ( Lu et al, 2022 ), the main components are MgO (37.84%), SiO 2 (41.71%), Fe 2 O 3 (14.37%), and CaO (3.29%). The weathering of minerals in SS may be the main reason for the significant increase of Avail.…”

Section: Discussionmentioning

confidence: 99%

“…(1) Enriching weathered bacteria of serpentine with promoted plant growth. Organic acids secreted by root and some mineral-weathered microorganisms can promote mineral weathering ( Archana et al., 2012 ; Lu et al., 2022 ). In this study, f_Sphingomonadaceae ( Sphingomonas ) is a biomarker in rhizosphere bacterial community of S. cannabina in SS ( Figures 3C , D ).…”

Section: Discussionmentioning

confidence: 99%

“…In this study, f_Sphingomonadaceae (Sphingomonas) is a biomarker in rhizosphere bacterial community of S. cannabina in SS (Figures 3C, D). Lu et al (2022) found that Sphingomonas is usually enriched in the environment where serpentine is present and may participate in the weathering of serpentine. In addition, Sphingomonas is a widely reported PGPR growth under stress (e.g.…”

Section: Effect and Mechanism Of Organic Fertilizer Combined With Riv...mentioning

confidence: 99%

“…However, with strict control of the local sand mining industry, the source of river-sand and sea-sand is a prominent problem. The reserves of serpentine deposits are extremely rich in Donghai County, Lianyungang City, Jiangsu Province ( Lu et al., 2022 ). At present, a large amount of low-quality serpentine mining waste has not been effectively utilized.…”

Section: Introductionmentioning

confidence: 99%

“…Considering that serpentine is rich in mineral elements such as magnesium ( Galey et al., 2017 ; Mpouras et al., 2017 ; Sakaguchi et al., 2018 ), it may be effective when trying to improve local saline-alkali soil by using an appropriate amount of serpentine instead of sand. In addition, the weathering of serpentine coupled with carbon fixation is also expected to increase the capture of atmospheric CO 2 ( Kojima et al., 1997 ; Liu et al., 2021 ; Lu et al., 2022 ), which may increase more soil carbon sinks while improving saline-alkali land. However, the application of serpentine in CSS has not been reported, thus the application of organic fertilizer combined with sand and serpentine in CSS improvement is warranted to be scientifically tested.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effect and mechanism of the improvement of coastal silt soil by application of organic fertilizer and gravel combined with Sesbania cannabina cultivation

Sun

Ren

et al. 2022

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

Jiangsu Province of China has a large area of coastal silt soil (CSS) with poor permeability, high salinity, and poor nutrients, which brings great difficulties to the development and utilization of coastal zones, so that needs to be improved as a matter of urgency. In this study, river-sand, serpentine, and organic fertilizer were used as additives in CSS, and Sesbania cannabina, a salt-tolerant cash crop, was planted in these differently treated soils. Through high-throughput sequencing, analysis of soil physico-chemical properties, and detection of plant growth status, the rhizosphere bacterial diversity of S. cannabina growing in CSS under different treatments and their environmental impact factors were studied, while exploring the effect and mechanism of organic fertilizer combined with gravel as a CSS modifier. The results implied that single application of organic fertilizer could significantly increase the fertility levels of total nitrogen (TN), total organic carbon (TOC) and Avail. P in CSS; then, the application of organic fertilizer with river-sand significantly reduced salt content and alkalinity of soil; meanwhile, in the treatment of single application of organic fertilizer and application of organic fertilizer combined with river-sand, the rhizosphere of S. cannabina enriched the bacterial communities of organic matter degradation and utilization to varying degrees. The soil moisture content and indicators related to saline-alkali soil (including total salt, electrical conductivity (EC), exchangeable sodium percentage (ESP), Avail. Na and Avail. K, etc.) were further reduced significantly by the application of organic fertilizer combined with river-sand and serpentine. The method has greatly improved the growth conditions of S. cannabina and promoted the positive development of its rhizosphere bacterial community. Among them, in the treatment of organic fertilizer combined with river-sand and serpentine, a variety of plant growth-promoting rhizobacteria (PGPR, such as Sphingomonas, Ensifer, and Rhodobacter) and nitrogen-cycle-related bacteria (such as nitrate-reduction-related bacteria, nitrogen-fixing bacteria like Ensifer, and purple non-sulfur photosynthetic bacteria like Rhodobacter) were enriched in the rhizosphere of S. cannabina; moreover, the mutual association and robustness of bacterial co-occurrence networks have been significantly enhanced. The results provide a theoretical basis and reference model for the improvement of coastal saline-alkali silt soil.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Effect and Mechanism Of Organic Fertilizer Combined With Riv...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%