Pyrogenic organic matter decreases while fresh organic matter increases soil heterotrophic respiration through modifying microbial activity in a subtropical forest

Zhou, Jiashu; Zhang, Shaobo; Hui, Dafeng; Vancov, Tony; Fang, Yunying; Tang, Caixian; Jiang, Zhenhui; Ge, Tida; Cai, Yanjiang; Yu, Bing; White, Jason C.; Li, Yongfu

doi:10.1007/s00374-024-01815-y

Biol Fertil Soils

2024

DOI: 10.1007/s00374-024-01815-y

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Pyrogenic organic matter decreases while fresh organic matter increases soil heterotrophic respiration through modifying microbial activity in a subtropical forest

Jiashu Zhou,

Shaobo Zhang,

Dafeng Hui

et al.

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Cited by 19 publications

References 93 publications

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Microbial traits affect soil organic carbon stability in degraded Moso bamboo forests

Tang,

Lv,

Wang

et al. 2024

Plant Soil

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Microbial traits affect soil organic carbon stability in degraded Moso bamboo forests

Tang,

Lv,

Wang

et al. 2024

Plant Soil

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Nitrogen addition and plant functional type mediate the mesofauna-driven litter element release of subtropical forest

Li,

Liu,

Yin

et al. 2024

Plant Soil

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Synergistic effect of microplastics and cadmium on microbial community and functional taxa in wheat rhizosphere soil

Ji,

Zhong,

Xiao

et al. 2024

Soil Ecol. Lett.

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Cd alone or combined with microplastics (MPs) enhanced wheat biomass.• Cd alone or combined with MPs greatly affected soil microorganism activity.• MPs reduced nutrient cycling functional microbial abundance under Cd treatment.Microplastics and heavy metal contamination poses major threats to soil function and food security; however, their synergistic effects remain largely unclear. This study investigated the effects of single or combined addition of polyethylene (PE) microplastic (1% w/w) and cadmium (Cd; 1.5 and 5 mg kg -1 ) on functional microbial communities in the wheat rhizosphere soil. We observed that the biomass of wheat increased by 142.44% under high doses of Cd addition. The bacterial alpha diversity in wheat bulk soil reduced by 37.34%-37.83% with the combined addition of microplastic and Cd. The addition of microplastic reduced the relative abundance of Proteus involved in nitrogen fixation by 19.93%, while the relative abundance of Proteus and Actinobacteria involved in nitrogen cycling increased with the increase of Cd concentration, increasing by 27.96%-37.37% and 51.14%-55.04%, respectively. FAPROTAX analysis revealed that increasing Cd concentration promoted the abundance of functional bacterial communities involved in nitrification/denitrification and nitrate/nitrite respiration in rhizosphere soil. A FunGuild analysis showed that the synergy of PE-microplastics and Cd increased the abundance of saprophytic fungi, suggesting an enhanced degradation function. Our findings provide new knowledge on the effects of microplastics and heavy metals on soil microorganisms and functional microbial communities in agricultural soil.

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Pyrogenic organic matter decreases while fresh organic matter increases soil heterotrophic respiration through modifying microbial activity in a subtropical forest

Cited by 19 publications

References 93 publications

Microbial traits affect soil organic carbon stability in degraded Moso bamboo forests

Microbial traits affect soil organic carbon stability in degraded Moso bamboo forests

Nitrogen addition and plant functional type mediate the mesofauna-driven litter element release of subtropical forest

Synergistic effect of microplastics and cadmium on microbial community and functional taxa in wheat rhizosphere soil

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