Publications by authors named "Decai Jin"

With the rapid advancement of agricultural modernization, biodegradable mulch (BDM) in farmland has become increasingly prevalent. However, little is known about the effects of BDM buried in soil on bacterial communities. In this study, a burial experiment was conducted on farmland using BDM (PBAT+PLA).

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Biodegradable mulch films (BDMs) are becoming increasingly popular in agriculture and are emerging as an alternative to conventional polyethylene (PE) films. However, the intricate details surrounding the establishment and growth of microorganisms on BDMs and PE during their degradation in agricultural fields remain unclear. In this study, the succession of bacterial communities in farmland soil and the plastispheres of PE and BDMs were compared through 16S rRNA gene high-throughput sequencing and real-time PCR.

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Phthalic acid esters (PAEs) are common organic contaminants in farmland soil throughout agricultural systems, posing significant threats to human health and thus closely associated with food safety concerns. Here, we consolidate the latest findings regarding the distribution, ecological effects, bioremediation methods, and microbial degradation pathways of PAEs in agricultural ecosystems. Generally, di(2-ethylhexyl) phthalate (DEHP), di--butyl phthalate (DnBP), and di-isobutyl phthalate (DiBP) exhibit the highest detection frequencies and concentrations in soil, air and agricultural products.

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Human activities in the last century have intensified global nitrogen deposition, resulting in the degradation of ecosystem function and loss of biodiversity worldwide. Nitrogen addition is a crucial method for examining the effects of atmospheric nitrogen deposition on species composition and structure of soil microbiome and biotic community, as exogenous nitrogen inputs can trigger cascading effects on ecosystem functions. In a 6-year experiment, we evaluated the impact of nitrogen addition on soil microbial-plant-insect systems in desert steppes.

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  • Chromium (Cr) contamination negatively impacts soil fungi, yet the specific responses of these fungi in heavily affected areas are not well understood.
  • High-throughput sequencing was used to analyze fungal communities in soils with different Cr levels, revealing that hexavalent chromium (Cr(VI)) is a key factor altering fungal structure and abundance.
  • The study found that Cr contamination not only decreased certain fungal trophic types but also enhanced fungal interactions, resulting in more complex and stable fungal networks, with some fungi showing potential for reducing toxic heavy metals.
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  • Phyllosphere microbes are vital for the health and productivity of plants, but their community dynamics in grapes are not well understood concerning various factors like leaf age and grape cultivars.
  • A study using amplicon sequencing showed that both grape variety and leaf age significantly impacted the diversity and composition of microbial communities, with young leaves generally hosting more diverse microbes.
  • Key findings included the presence of beneficial microbes in younger leaves that could prevent diseases, while older leaves harbored certain fungi linked to higher disease risk, emphasizing the need for understanding these microbial dynamics for better agricultural practices.
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  • Chromium pollution, especially hexavalent chromium [Cr(VI)], poses risks to the environment and human health, prompting a study on the ability of Tagetes erecta L. (Aztec marigold) to help remediate contaminated soil.
  • The study found that Tagetes erecta L. demonstrated tolerance to Cr(VI) stress, maintaining normal growth and showing bioconcentration factors indicating its ability to absorb Cr(VI).
  • Additionally, Cr(VI) significantly altered the microbial communities associated with Tagetes erecta L., enhancing the stability of its endophytic microbiome and identifying specific bacterial genera linked to Cr(VI) concentrations.
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Biodegradable mulch films (BDMs) are increasingly used in agricultural production as desirable alternatives to the current widespread use of polyethylene (PE) mulch films in China. However, potential effects of different colors of BDMs on field crop production and microbiomes remain unexplored. Here, the differences in bacterial communities of peanut rhizosphere soil (RS) and bulk soil (BS) under non-mulching (CK), PE, and three different colors of BDMs were studied.

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Background: Leaf-associated microbes play an important role in plant development and response to exogenous stress. Insect herbivores are known to alter the phyllosphere microbiome. However, whether the host plant's defense against insects is related to the phyllosphere microbiome remains mostly elusive.

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  • * A study monitored the native fungal community during bioremediation of DBP-contaminated soils using Gordonia phthalatica QH-11, finding that the fungal diversity and structure remained stable and unaffected by the introduced microorganism.
  • * Despite initial increases in certain plant pathogens and soil saprotrophs due to pollution, their levels returned to normal, indicating that introducing Gordonia is safe for soil ecosystem stability and provides insights into ecological risks associated with exogenous microorganisms.
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  • Soil samples were collected from Jinan and Hangzhou steel plants to study PAHs contamination and bacterial communities at different depths.
  • Results showed that PAHs levels decreased with soil depth, and physicochemical properties of the soil affected bacterial community composition, with higher PAHs in Hangzhou leading to increased bacterial diversity, unlike in Jinan.
  • Key bacteria were linked to PAH concentrations, and the network structure of contaminated soils was more complex than that of uncontaminated soils, suggesting potential for microbial remediation strategies.
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Pyroxasulfone (PYR) is a widely used herbicide, but its effects on non-target organisms, particularly microorganisms, are largely unknown. Herein, we investigated the effects of various doses of PYR on the sugarcane rhizosphere microbiome by using amplicon sequencing of rRNA genes and quantitative PCR techniques. Correlation analyses indicated that several bacterial phyla (Verrucomicrobia and Rhodothermaeota) and genera (Streptomyces and Ignavibacteria) strongly responded to PYR application.

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  • * DBP exposure significantly decreases microbial biomass, alters microbial composition, and reduces network complexity, suggesting a strong correlation between these factors and composting effectiveness.
  • * Key microbial taxa affected by DBP stress include Streptomyces and Thermoactinomyces, highlighting the need for improved strategies to manage agricultural waste amid phthalate contamination.
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Chlorantraniliprole (CAP) is an insecticide with low toxicity and high efficiency, which is widely used in agriculture in China. However, its potential ecological risks remain unknown. In this study, we investigated the impact of different CAP concentrations on bacterial and fungal communities in soil based on high-throughput sequencing.

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Biodegradable mulch films are widely used to replace conventional plastic films in agricultural fields. However, their ecological effects on different microbial communities that naturally inhabit agricultural fields are scarcely explored. Herein, differences in bacterial communities recovered from biofilms, bulk soil, and rhizosphere soil were comparatively assessed for polyethylene film (PE) and biodegradable mulch film (BDM) application in peanut planted fields.

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Nitrogen (N) loss during composting reduces the quality of compost products and causes secondary environmental pollution. Phthalate esters (PAEs) are common pollutants in agricultural wastes. However, little information is currently available on how PAEs affect N conversion during agricultural waste composting.

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Bensulfuron methyl (BSM) is a widely used sulfonylurea herbicide in agriculture. However, the large-scale BSM application causes severe environmental problems. Biodegradation is an important way to remove BSM residue.

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  • The Modaomen Waterway serves as a key water source for Zhuhai and Macao, with an investigation of 13 sampling sites revealing diverse phytoplankton communities and environmental factors in four related drinking water reservoirs during 2021.* -
  • A total of 73 genera and 150 species of phytoplankton were identified, showing varying biodiversity across reservoirs; the ZY reservoir exhibited the best water quality and highest biodiversity, while DJS had the least.* -
  • The study found that nutrient levels (e.g., NO, TOC, TP) significantly influenced phytoplankton distribution, emphasizing the need to improve water quality in the Modaomen Waterway for safe drinking water supply.*
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Insect-associated bacteria play an important role in the resistance to pesticides, yet bacterial community compositions in wild insect host populations and the environmental factors that shape them are mostly elusive. In this study, Sitobion miscanthi (Takahashi) populations were collected from major wheat growing regions in China. Following high-throughput sequencing of 16S rRNA gene fragments, association analyses were performed within the bacterial community associated with S.

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  • The study explores how di-n-butyl phthalate (DBP) affects the conversion of humic acid (HA) during composting, focusing on microbial dynamics.
  • It finds that HA formation is mainly driven by bacteria, specifically positively influenced by Actinobacteria, Chloroflexi, and Gemmatimonadota, while hindered by Proteobacteria and Bacteroidota under DBP stress.
  • Additionally, DBP alters enzyme activities during composting, slowing down processes like HA formation and compost maturation, highlighting implications for managing PAE-contaminated waste.
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  • - This study aimed to analyze the levels and harmful effects of 16 polycyclic aromatic hydrocarbons (PAHs) in surface soils around a coal chemical industry in Shanxi province, China, using 52 soil samples from various land-use areas.
  • - Findings revealed that total PAH concentrations ranged significantly, with the highest levels found in roadside samples, and a concerning percentage of samples showing risk quotients exceeding safe limits, indicating potential health hazards.
  • - The research concluded that the toxic potential of PAHs in the soils poses a significant risk to both human health and the environment, with cancer risk levels far exceeding U.S. EPA safety standards.
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Phthalic acid esters (PAEs) pollution has become a major environmental problem in agricultural waste composting. However, little information was available about the how the PAEs alter microbial processes during composting. This study investigated the effects of di-n-butyl phthalate (DBP) on bacterial biomass and community dynamics during composting.

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  • - The study examines how bacterial and fungal communities in the rice phyllosphere vary with elevation and plant growth stages, using high-throughput sequencing across five sites in Ziquejie Mountain from 580 to 980 meters above sea level.
  • - Results show that bacterial dominance belongs to phyla like Proteobacteria, while fungi are mainly from Ascomycota, with both community types significantly affected by elevation and plant growth stages, particularly the diversity of bacteria.
  • - The analysis found that specific bacterial and fungal genera correlated with elevation changes, highlighting the importance of soluble protein in influencing microbial communities, while revealing notable differences in community composition across various growth stages.
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Despite the increasing application of biodegradable plastic mulches (BDMs) in agriculture, the colonization and succession of the attached microbial community on BDMs during their degradation processes remain poorly characterized. Here, we buried four types of commonly used BDMs, including pure polylactic acid (PLA), pure polybutylene adipate terephthalate (PBAT), and two mixtures of PLA and PBAT (85:15 and 15:85 w/w), and one classic polyethylene (PE) mulch in soil for 5 months. Both plastic components and incubation time significantly shaped the β-diversities of microbiota on the plastic mulches ( < 0.

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Heavy metal pollution in rice fields leads to huge losses in rice yield every year and is thus of increasing concern. Therefore, it is important to understand the changes in the microecology and physicochemical properties of paddy soil under different levels of cadmium pollution. The purpose of this study was to investigate the response of the photosynthetic bacterial community in paddy soil to different cadmium pollution levels using 16S sequencing technology.

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