农业土壤高亲和力H2氧化活性的空间异质性

IF 9.8 1区农林科学 Q1 SOIL SCIENCE

Soil Biology & Biochemistry Pub Date : 2024-12-28 DOI:10.1016/j.soilbio.2024.109703

Lijun Hou, Philippe Constant, Joann K. Whalen

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引用次数: 0

摘要

土壤H2氧化菌对大气中的H2进行代谢，但土壤碳基质和环境因子影响其在土壤剖面中的分布。对土壤剖面（5 cm、15 cm和35 cm）以及大豆根际和块土之间H2含量和高亲和力H2氧化活性的空间分布进行了实地调查。H2含量随土壤深度呈指数下降，但潜在的H2氧化活性在所有土壤深度都是一致的。根际土壤的高亲和H 2氧化活性比散装土壤高66%。同时存在H2和碳可能促进H2氧化细菌在根际的混合营养生长。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Spatial heterogeneity of high-affinity H2 oxidation activity in agricultural soil profile

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Spatial heterogeneity of high-affinity H2 oxidation activity in agricultural soil profile

Soil H₂ oxidizing bacteria metabolize H₂ from the atmosphere, but soil carbon substrates and environmental factors influence their distribution in the soil profile. We conducted a field survey of the spatial distribution of H₂ content and high-affinity H₂ oxidation activity in the soil profile (5 cm, 15 cm, and 35 cm) and between the soybean rhizosphere and bulk soil. We found the H₂ content declined exponentially with soil depth, but potential H₂ oxidation activity was consistent at all soil depths. The rhizosphere soil had 66% more high-affinity H₂ oxidation activity than bulk soil. Simultaneous presence of H₂ and carbon likely facilitates mixotrophic growth of H₂ oxidizing bacteria in the rhizosphere.

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来源期刊

Soil Biology & Biochemistry 农林科学-土壤科学

CiteScore

16.90

自引率

9.30%

发文量

312

审稿时长

49 days

期刊介绍： Soil Biology & Biochemistry publishes original research articles of international significance focusing on biological processes in soil and their applications to soil and environmental quality. Major topics include the ecology and biochemical processes of soil organisms, their effects on the environment, and interactions with plants. The journal also welcomes state-of-the-art reviews and discussions on contemporary research in soil biology and biochemistry.