Soil Properties Correlate with Microbial Community Structure in Qatari Arid Soils

Skariah, Sini; Majid, Sara Abdul; Acharya, Anushree; Kano, Noora; Al-Ishaq, Raghad Khalid; Figueiredo, Paul de; Han, Arum; Guzman, Adrian R.; Dargham, Soha R.; Sameer, Saad; Kim, Gi Eun; Khan, Sabiha; Pillai, Priyamvada; Sultan, Ali A.

doi:10.1128/spectrum.03462-22

Cited by 2 publications

(1 citation statement)

References 72 publications

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“…Acidobacteria is an acidophilic taxon, usually inversely proportional to the organic carbon mineralization rate, and enriches readily in poorly resourced soils (Zhang et al, 2021; Zheng et al, 2016). Less competitive Gemmatimonadetes are more likely to survive in water‐scarce or extreme environments, such as semi‐arid, arid, and desert environments (Skariah et al, 2023) because, in water or nutrient‐rich conditions, competitors may displace them (DeBruyn et al, 2011). These results, to an extent, indicate that biochar is beneficial to improve the soil nutrient environment.…”

Section: Discussionmentioning

confidence: 99%

Biochar drives changes in soil bacterial communities and cotton growth by improving nutrients availability under saline conditions

Wang,

Tian,

Qiu

et al. 2023

Land Degrad Dev

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Applying biochar to saline soil is a novel strategy for improving soil quality. However, how biochar addition amount affects soil nutrients, bacterial communities, and cotton growth at different stages remains unclear. Three biochar treatments, no biochar (BC0), 1% biochar (BC1, w/w), 3% biochar (BC3), and two cotton varieties, salt‐sensitive (SS) and salt‐tolerant (ST), were used in pot experiments, analyzing biochar effects on saline soil nutrients, bacterial communities, and cotton growth. The study found that biochar increased only organic carbon (SOC), total nitrogen (TN), and available potassium (AK) at the seedling stage. However, at the flowering‐boll stage, biochar also increased nitrate () and available phosphorus (AP) and reduced soil salt content. Biochar did not affect α‐diversity at the seedling stage, but BC3 reduced α‐diversity at the flowering‐boll stage. The principal coordinate analysis revealed changes in the soil bacterial community composition that were closely associated with biochar added. From the redundancy analyses, SOC and AK were the leading environmental factors for soil bacterial community composition changes. SOC, TN, and AK correlated positively with Proteobacteria, which increased their relative abundance through biochar addition and correlated negatively with Bacteroidetes, Chloroflexi, and Acidobacteria, which decreased their relative abundance due to biochar. Furthermore, the random forests analysis showed that SOC, Shannon index, and β‐diversity were significant predictors of cotton biomass. In summary, biochar drives changes in bacterial communities in saline soils by increasing nutrients such as SOC and AK, which affect cotton growth. This study provides data to support the application of biochar on saline soils.

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