Article
Soil Science
Leiling Fu, Yue Lu, Lin Tang, Yingju Hu, Qingqing Xie, Linrui Zhong, Changzheng Fan, Qian Liu, Shoujuan Zhang
Summary: The addition of three different types of biochar reduced methane emission and total archaeal diversity, but had no significant effect on altering methanogenic communities in paddy soil. Incubation time was found to be the major driver for the succession of archaeal community.
APPLIED SOIL ECOLOGY
(2021)
Article
Agronomy
Qingqing Xiao, Boping He, Su Wang
Summary: The application of fertilizer in paddy fields has a significant impact on soil bacteria, which in turn affects soil enzyme activities and rice growth. This study investigated different fertilizer treatments and their effects on soil bacteria, enzyme activities, and nutrient loss in paddy soil. The results showed that reducing fertilizer application can affect soil pH, TN, TP, SOM, and bacterial community composition. The IT + RF 10 treatment, with a 10% reduction in nitrogen fertilizer, was found to be the most effective in reducing nutrient loss and promoting soil enzyme activity.
Article
Environmental Sciences
Bangjing Ding, Hui Zhang, Wenqi Luo, Siyu Sun, Fan Cheng, Zhengkui Li
Summary: The study investigated the distribution of nitrogen loss pathways in different layers of paddy soil in southeastern China, revealing differences in the activities of anammox and Feammox in different soil layers. Denitrification was identified as the main nitrogen loss pathway in the surface soil, while Feammox became significant in the 20-40 cm depth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Pia Oyarzua, Patricia Bovio-Winkler, Claudia Etchebehere, Maria Eugenia Suarez-Ojeda
Summary: This study evaluated different molecular approaches for studying bacterial communities in an anammox reactor, finding that universal primers had low coverage, functional gene methods provided taxonomic resolution at the species level, and targeted qPCR primers showed consistency in quantification. Recommendations were made to consider genomic database updates and coverage when choosing a biomolecular approach.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Bingchen Yuan, Daogeng Yu, An Hu, Yanru Wang, Yuting Sun, Chengzhen Li
Summary: Interplanting different green manure crops in litchi orchards in tropical regions of China effectively increases soil nutrients and reduces weed population. However, the choice of green manure crop should be based on soil conditions, as different crops have different effects on soil nutrient content. Intercropping with green manure crops enhances soil ammonium nitrogen and available phosphorus content, and promotes the abundance of beneficial microbial genera. Therefore, intercropping is an effective management measure in litchi orchards, but the selection of green manure crop should be considered based on soil conditions.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Agronomy
Chengyu Xu, Yulin Li, Xue Hu, Qian Zang, Hengyang Zhuang, Lifen Huang
Summary: Organic cultivation improves soil physicochemical properties, enhances soil enzyme activity, and alters soil microbial diversity and bacterial abundance compared to conventional cultivation.
Article
Soil Science
Mayu Fujino, Kazuki Suzuki, Naoki Harada, Rasit Asiloglu
Summary: Bacterial communities in soil ecosystems, including paddy fields, are regulated by predatory protists. Current knowledge on this regulation comes solely from DNA-based methods which lack the ability to differentiate between alive and dead cells. This study compared DNA- and RNA-based sequencing methods to evaluate the impact of protists on bacterial community composition, and found that protists have a species-specific effect and soil type is an important factor in microbial trophic interactions.
BIOLOGY AND FERTILITY OF SOILS
(2023)
Article
Biodiversity Conservation
Jing Guo, Yaqiong Wu, Xiaohong Wu, Zhong Ren, Guibin Wang
Summary: This study compared the impacts of four afforestation and agroforestry practices on soil properties and bacterial communities with legacy cropping systems in China. The results showed that afforestation and agroforestry practices significantly increased soil organic carbon and total nitrogen levels while also enhancing bacterial diversity, with a greater effect on bacterial community beta diversity in the topsoil. Land conversion was found to be a key factor influencing taxonomic shifts and functional variations in bacterial communities, particularly in the topsoil.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Agronomy
Alena Zhelezova, Timofey Chernov, Dmitry Nikitin, Azida Tkhakakhova, Natalia Ksenofontova, Aleksei Zverev, Olga Kutovaya, Mikhail Semenov
Summary: Microbial community structure and abundance in long-term abandoned cropland were influenced by monthly changes in moisture and temperature. The growing period exhibited higher bacterial abundance and diversity compared to the dormant period. The relative abundances of certain bacterial taxa varied seasonally, with Actinobacteria and Chloroflexi more abundant in the dormant period. Soil and air temperature positively correlated with microbial gene abundances.
Article
Biology
Yan Wang, Qingyun Ma, Lingling Wang, Jingkuo Hu, Huiying Xue, Dongfei Han, Zhen Xing, Zhiyong Ruan
Summary: The composition, function, and interactions of the soil microbial community of cultivated Meconopsis integrifolia were studied using high-throughput sequencing technology and culturing methods. Soil bacteria are involved in nutrient cycling, and mycorrhizal fungi form symbioses with plants. Both bacteria and fungi adopt a more synergistic and cooperative strategy to promote overall metabolic efficiency in extreme habitats, but at the expense of reduced ecological stability. These results are valuable for the conservation of endangered Meconopsis integrifolia and the exploitation of its medicinal value.
Article
Microbiology
Zexun Liu, Jiayao Zhuang, Kang Zheng, Chengcheng Luo
Summary: Rapid growth in the mining industry has resulted in the accumulation of tailings, leading to serious ecological destruction and soil pollution. This study assessed the soil nutrients, bacterial community, and microbial metabolic function in polluted and clean areas using sequencing. The results showed that severe loss of soil nutrients and bacterial diversity occurred with increased tailings pollution. The relative abundance of Actinobacteria and Proteobacteria was high in polluted areas, while the abundance of Chloroflexi was low. Tax4 Fun analysis revealed that tailings pollution affected the bacterial community and altered the primary types of biological metabolism. Overall, this study provides valuable information about the bacterial community structure and metabolic functions in tailing-polluted soil.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Environmental Sciences
Manli Wu, Zeliang Liu, Huan Gao, Jinghua Gao, Yinrui Xu, Yawen Ou
Summary: By studying the crude oil exploration activities in the Shanbei oilfield of China, it has been found that the risk of soil contamination with crude oil spills is a major concern. This study aimed to assess the bioremediation potential of petroleum polluted soils by investigating the expression of key functional genes decoding alkane and aromatic component degradation, and determining the functional microbiomes. The results showed that certain bacteria and genes were involved in the degradation of petroleum components under specific conditions. The bioremediation potential was higher when the petroleum content was below a certain level and feasible under moderate pollution conditions.
Article
Ecology
Huanhuan Wang, Xu Li, Xinyu Li, Fuli Li, Zhencheng Su, Huiwen Zhang
Summary: The research found that diazotrophs in paddy soils mainly belong to the phylum Proteobacteria, with the highest diversity in the 10-20 cm layer and decreasing with soil depth. The community structure of diazotrophs is significantly influenced by region and soil depth, with soil total C and N content and pH being the main factors affecting vertical variation.
Article
Soil Science
Chaolei Yuan, Zhaoyang Sun, Jing Li
Summary: Plant residues used as soil amendments in laboratory experiments may release compounds interfering with soil DNA extraction and molecular biological analyses. However, our study found no significant difference in microbial community composition or abundance between soil samples with and without added plant residue through DNA extraction, 16S rRNA gene sequencing, and quantitative PCR analysis.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2023)
Article
Microbiology
Xiao Zhang, Di Dang, Lingsi Zheng, Lingyu Wu, Yu Wu, Haoruo Li, Yongjie Yu
Summary: This study revealed that high concentration of AgNPs (50 mg/kg) significantly increased soil denitrification rate and N2O emission rate, and also affected the microbial community, with Firmicutes and beta-proteobacteria potentially playing a key role in N2O emissions.
FRONTIERS IN MICROBIOLOGY
(2021)
