Effect of temperature on microbial residue dynamics in a temperate farmland soil

Wei Zhang; Shuhan Dong; Ming Nie; Chao Liang; Xiaochen Zhang; Hongbo He; Xudong Zhang

doi:10.1139/cjss-2020-0090

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3 February 2021 Effect of temperature on microbial residue dynamics in a temperate farmland soil

Wei Zhang, Shuhan Dong, Ming Nie, Chao Liang, Xiaochen Zhang, Hongbo He, Xudong Zhang

Author Affiliations +

Wei Zhang,¹ Shuhan Dong,² Ming Nie,³ Chao Liang,¹ Xiaochen Zhang,¹ Hongbo He,^4,* Xudong Zhang^2,*

¹Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China.
²Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China.
³Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, Shanghai 200433, People’s Republic of China.
⁴Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China; National Field Observation and Research Station of Shenyang Agroecosystems, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of Chi

^*Corresponding authors: Xudong Zhang (email: xdzhang@iae.ac.cn) and Hongbo He (email: hehongbo@iae.ac.cn).

Canadian J. of Soil Science, 101(2):348-351 (2021). https://doi.org/10.1139/cjss-2020-0090

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Abstract

Microorganisms mediate soil organic carbon (SOC) turnover, and microbial residues contribute a significant portion to SOC storage in temperate agroecosystems. However, little is known about the direct effect of temperature on microbial residues associated with SOC sequestration/decomposition. We assessed microbial residue dynamics in a 28 d incubation conducted at four temperatures (5, 15, 25, and 35 °C). Microbial residues did not change with time from 5 to 25 °C. However, at 35 °C, fungal residues decomposed significantly with time, and the decomposition rate was higher than SOC. Considering the important contribution of fungal residues to stable-C pool, our findings indicated warming may be detrimental to C stability in this temperate soil.

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Wei Zhang, Shuhan Dong, Ming Nie, Chao Liang, Xiaochen Zhang, Hongbo He, and Xudong Zhang "Effect of temperature on microbial residue dynamics in a temperate farmland soil," Canadian Journal of Soil Science 101(2), 348-351, (3 February 2021). https://doi.org/10.1139/cjss-2020-0090

Received: 22 July 2020; Accepted: 29 January 2021; Published: 3 February 2021

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Canadian Journal of Soil Science
Vol. 101 • No. 2
June 2021

KEYWORDS

bacterial residues

fungal residues

soil amino sugars

soil organic carbon stability

temperature

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Wei Zhang, Shuhan Dong, Ming Nie, Chao Liang, Xiaochen Zhang, Hongbo He, Xudong Zhang "Effect of temperature on microbial residue dynamics in a temperate farmland soil," Canadian Journal of Soil Science, 101(2), 348-351, (3 February 2021)

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