Dataset Information

Phenolic compounds weaken the impact of drought on soil enzyme activity in global wetlands.

ABSTRACT: Soil enzymes play a central role in carbon and nutrient cycling, and their activities can be affected by drought-induced oxygen exposure. However, a systematic global estimate of enzyme sensitivity to drought in wetlands is still lacking. Through a meta-analysis of 55 studies comprising 761 paired observations, this study found that phosphorus-related enzyme activity increased by 38% as result of drought in wetlands, while the majority of other soil enzyme activities remained stable. The expansion of vascular plants under long-term drought significantly promoted the accumulation of phenolic compounds. Using a 2-week incubation experiment with phenol supplementation, we found that phosphorus-related enzyme could tolerate higher biotoxicity of phenolic compounds than other enzymes. Moreover, a long-term (35 years) drainage experiment in a northern peatland in China confirmed that the increased phenolic concentration in surface layer resulting from a shift in vegetation composition inhibited the increase in enzyme activities caused by rising oxygen availability, except for phosphorus-related enzyme. Overall, these results demonstrate the complex and resilient nature of wetland ecosystems, with soil enzymes showing a high degree of adaptation to drought conditions. These new insights could help evaluate the impact of drought on future wetland ecosystem services and provide a theoretical foundation for the remediation of degraded wetlands.

SUBMITTER: Li T

PROVIDER: S-EPMC10957752 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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Phenolic compounds weaken the impact of drought on soil enzyme activity in global wetlands.

Li Tong T Ge Leming L Zhao Ruotong R Peng Changhui C Zhou Xiaolu X Li Peng P Liu Zelin Z Song Hanxiong H Tang Jiayi J Zhang Cicheng C Li Quan Q Wang Meng M Zou Ziying Z

Frontiers in microbiology 20240308

Soil enzymes play a central role in carbon and nutrient cycling, and their activities can be affected by drought-induced oxygen exposure. However, a systematic global estimate of enzyme sensitivity to drought in wetlands is still lacking. Through a meta-analysis of 55 studies comprising 761 paired observations, this study found that phosphorus-related enzyme activity increased by 38% as result of drought in wetlands, while the majority of other soil enzyme activities remained stable. The expansi ...[more]

PMID: 38525071

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Phenolic compounds weaken the impact of drought on soil enzyme activity in global wetlands.

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Phenolic compounds weaken the impact of drought on soil enzyme activity in global wetlands.

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