| Title | Straw and biochar strongly affect functional diversity of microbial metabolism in paddy soils |
| Publication Type | Journal Article |
| Year of Publication | 2019 |
| Authors | Yuan H.Z, Zhu Z.K, Wei X.M, Liu S.L, Peng P.Q, Gunina A., Shen J.L, Kuzyakov Y., Ge T.D, Wu J.S, Wang J.R |
| Journal | Journal of Integrative Agriculture |
| Volume | 18 |
| Pagination | 1474-1485 |
| Date Published | Jul |
| Type of Article | Article |
| ISBN Number | 2095-3119 |
| Accession Number | WOS:000474451900009 |
| Keywords | Agriculture, biochar amendment, biomass, carbon metabolism, Carbon sequestration, Community structure, forest soils, level physiological profiles, Microbial functional diversity, microresp (tm), nitrogen, organic-matter, paddy sod, rhizosphere, rice, straw, use efficiency |
| Abstract | The application of straw and biochar is widely practiced for the improvement of soil fertility. However, its impact on microbial functional profiles, particularly with regard to paddy soils, is not well understood. The aim of this study was to investigate the diversity of microbial carbon use patterns in paddy soils amended with straw or straw-derived biochar in a 3-year field experiment in fallow soil and at various development stages of a rice crop (i.e., tillering and blooming). We applied the community level physiological profiling approach, with 15 substrates (sugars, carboxylic and amino acids, and phenolic acid). In general, straw application resulted in the greatest microbial functional diversity owing to the greater number of available C sources than in control or biochar plots. Biochar amendment promoted the use of alpha-ketoglutaric acid, the mineralization of which was higher than that of any other substrate. Principal component analyses indicated that microbial functional diversity in the biochar-amended soil was separated from those of the straw-amended and control soils. Redundancy analyses revealed that soil organic carbon content was the most important factor regulating the pattern of microbial carbon utilization. Rhizodeposition and nutrient uptake by rice plants modulated microbial functions in paddy soils and stimulated the microbial use of N-rich substances, such as amino acids. Thus, our results demonstrated that the functional diversity of microorganisms in organic amended paddy soils is affected by both physicochemical properties of amendment and plant growth stage. |
| Short Title | J. Integr. Agric.J. Integr. Agric. |
| Alternate Journal | J. Integr. Agric. |
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- Straw and biochar strongly affect functional diversity of microbial metabolism in paddy soils
Straw and biochar strongly affect functional diversity of microbial metabolism in paddy soils
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[biblio_abst_e] => The application of straw and biochar is widely practiced for the improvement of soil fertility. However, its impact on microbial functional profiles, particularly with regard to paddy soils, is not well understood. The aim of this study was to investigate the diversity of microbial carbon use patterns in paddy soils amended with straw or straw-derived biochar in a 3-year field experiment in fallow soil and at various development stages of a rice crop (i.e., tillering and blooming). We applied the community level physiological profiling approach, with 15 substrates (sugars, carboxylic and amino acids, and phenolic acid). In general, straw application resulted in the greatest microbial functional diversity owing to the greater number of available C sources than in control or biochar plots. Biochar amendment promoted the use of alpha-ketoglutaric acid, the mineralization of which was higher than that of any other substrate. Principal component analyses indicated that microbial functional diversity in the biochar-amended soil was separated from those of the straw-amended and control soils. Redundancy analyses revealed that soil organic carbon content was the most important factor regulating the pattern of microbial carbon utilization. Rhizodeposition and nutrient uptake by rice plants modulated microbial functions in paddy soils and stimulated the microbial use of N-rich substances, such as amino acids. Thus, our results demonstrated that the functional diversity of microorganisms in organic amended paddy soils is affected by both physicochemical properties of amendment and plant growth stage.
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Times Cited: 3
Cited Reference Count: 80
Yuan Hong-zhao Zhu Zhen-ke Wei Xiao-meng Liu Shou-long Peng Pei-qin Gunina, Anna Shen Jian-lin Kuzyakov, Yakov Ge Ti-da Wu Jin-shui Wang Jiu-rong
Kuzyakov, Yakov/D-1605-2010; Shen, Jianlin/G-1820-2014
Kuzyakov, Yakov/0000-0002-9863-8461; Shen, Jianlin/0000-0002-5853-094X
National Key Research and Development Program of China [2016YFE0101100]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41771334, 41771337, 31470629]; Youth Innovation Team Project of the Institute of Subtropical Agriculture, Chinese Academy of Sciences (2017QNCXTD_GTD); Chinese Academy of Sciences Instrument Function Development Project; Government Program of Competitive Growth of Kazan Federal University; RUDN University program 5-100
This study was financially supported by the National Key Research and Development Program of China (2016YFE0101100), the National Natural Science Foundation of China (41771334, 41771337 and 31470629), the Youth Innovation Team Project of the Institute of Subtropical Agriculture, Chinese Academy of Sciences (2017QNCXTD_GTD), the Chinese Academy of Sciences Instrument Function Development Project, and the Government Program of Competitive Growth of Kazan Federal University and by the "RUDN University program 5-100". We gratefully acknowledge the Public Service Technology Center, Institute of Subtropical Agriculture, Chinese Academy of Sciences, for technical assistance. We would like to thank Editage (www.editage.cn) for English language editing.
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Elsevier sci ltd
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Zhu, ZK (reprint author), Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.
yuanhongzhao@isa.ac.cn; zhuzhenke@isa.ac.cn
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