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Tsuboi S, Hoshino YT, Yamamoto-Tamura K, Uenishi H, Omae N, Morita T, Sameshima-Yamashita Y, Kitamoto H, Kishimoto-Mo AW. Enhanced biodegradable polyester film degradation in soil by sequential cooperation of yeast-derived esterase and microbial community. Environ Sci Pollut Res Int 2024; 31:13941-13953. [PMID: 38265596 DOI: 10.1007/s11356-024-31994-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024]
Abstract
The degradation of biodegradable plastics poses a significant environmental challenge and requires effective solutions. In this study, an esterase derived from a phyllosphere yeast Pseudozyma antarctica (PaE) enhanced the degradation and mineralization of poly(butylene succinate-co-adipate) (PBSA) film in soil. PaE was found to substitute for esterases from initial degraders and activate sequential esterase production from soil microbes. The PBSA film pretreated with PaE (PBSA-E) rapidly diminished and was mineralized in soil until day 55 with high CO2 production. Soil with PBSA-E maintained higher esterase activities with enhancement of microbial abundance, whereas soil with inactivated PaE-treated PBSA film (PBSA-inact E) showed gradual degradation and time-lagged esterase activity increases. The fungal genera Arthrobotrys and Tetracladium, as possible contributors to PBSA-film degradation, increased in abundance in soil with PBSA-inact E but were less abundant in soil with PBSA-E. The dominance of the fungal genus Fusarium and the bacterial genera Arthrobacter and Azotobacter in soil with PBSA-E further supported PBSA degradation. Our study highlights the potential of PaE in addressing concerns associated with biodegradable plastic persistence in agricultural and environmental contexts.
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Affiliation(s)
- Shun Tsuboi
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604, Japan
| | - Yuko Takada Hoshino
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604, Japan.
| | - Kimiko Yamamoto-Tamura
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604, Japan
| | - Hirohide Uenishi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 1-2 Owashi, Tsukuba, Ibaraki, 305-8634, Japan
| | - Natsuki Omae
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Tomotake Morita
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Yuka Sameshima-Yamashita
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604, Japan
| | - Hiroko Kitamoto
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604, Japan
| | - Ayaka W Kishimoto-Mo
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604, Japan
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Woolf D, Lehmann J, Ogle S, Kishimoto-Mo AW, McConkey B, Baldock J. Greenhouse Gas Inventory Model for Biochar Additions to Soil. Environ Sci Technol 2021; 55:14795-14805. [PMID: 34637286 PMCID: PMC8567415 DOI: 10.1021/acs.est.1c02425] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 05/13/2023]
Abstract
Stabilizing the global climate within safe bounds will require greenhouse gas (GHG) emissions to reach net zero within a few decades. Achieving this is expected to require removal of CO2 from the atmosphere to offset some hard-to-eliminate emissions. There is, therefore, a clear need for GHG accounting protocols that quantify the mitigation impact of CO2 removal practices, such as biochar sequestration, that have the potential to be deployed at scale. Here, we have developed a GHG accounting methodology for biochar application to mineral soils using simple parameterizations and readily accessible activity data that can be applied at a range of scales including farm, supply chain, national, or global. The method is grounded in a comprehensive analysis of current empirical data, making it a robust method that can be used for many applications including national inventories and voluntary and compliance carbon markets, among others. We show that the carbon content of biochar varies with feedstock and production conditions from as low as 7% (gasification of biosolids) to 79% (pyrolysis of wood at above 600 °C). Of this initial carbon, 63-82% will remain unmineralized in soil after 100 years at the global mean annual cropland-temperature of 14.9 °C. With this method, researchers and managers can address the long-term sequestration of C through biochar that is blended with soils through assessments such as GHG inventories and life cycle analyses.
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Affiliation(s)
- Dominic Woolf
- School
of Integrative Plant Sciences, Cornell University, Ithaca, New York 14953, United States
- Cornell
Atkinson Center for Sustainability, Cornell
University, Ithaca New York 14953, United States
| | - Johannes Lehmann
- School
of Integrative Plant Sciences, Cornell University, Ithaca, New York 14953, United States
- Cornell
Atkinson Center for Sustainability, Cornell
University, Ithaca New York 14953, United States
| | - Stephen Ogle
- Natural
Resource Ecology Laboratory, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Ayaka W. Kishimoto-Mo
- Institute
for Agro-Environmental Sciences, National
Agriculture and Food Research Organization, Ibaraki, 305-8604, Japan
| | - Brian McConkey
- Ministry
of Agriculture and Agri-Food, Ottawa K1A 0C5, Canada
| | - Jeffrey Baldock
- CSIRO—Commonwealth
Scientific and Industrial Research Organisation, Glen Osmond 5064 Australia
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Sakurai G, Yonemura S, Kishimoto-Mo AW, Murayama S, Ohtsuka T, Yokozawa M. Inversely estimating the vertical profile of the soil CO2 production rate in a deciduous broadleaf forest using a particle filtering method. PLoS One 2015; 10:e0119001. [PMID: 25793387 PMCID: PMC4368638 DOI: 10.1371/journal.pone.0119001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 01/27/2015] [Indexed: 12/01/2022] Open
Abstract
Carbon dioxide (CO2) efflux from the soil surface, which is a major source of CO2 from terrestrial ecosystems, represents the total CO2 production at all soil depths. Although many studies have estimated the vertical profile of the CO2 production rate, one of the difficulties in estimating the vertical profile is measuring diffusion coefficients of CO2 at all soil depths in a nondestructive manner. In this study, we estimated the temporal variation in the vertical profile of the CO2 production rate using a data assimilation method, the particle filtering method, in which the diffusion coefficients of CO2 were simultaneously estimated. The CO2 concentrations at several soil depths and CO2 efflux from the soil surface (only during the snow-free period) were measured at two points in a broadleaf forest in Japan, and the data were assimilated into a simple model including a diffusion equation. We found that there were large variations in the pattern of the vertical profile of the CO2 production rate between experiment sites: the peak CO2 production rate was at soil depths around 10 cm during the snow-free period at one site, but the peak was at the soil surface at the other site. Using this method to estimate the CO2 production rate during snow-cover periods allowed us to estimate CO2 efflux during that period as well. We estimated that the CO2 efflux during the snow-cover period (about half the year) accounted for around 13% of the annual CO2 efflux at this site. Although the method proposed in this study does not ensure the validity of the estimated diffusion coefficients and CO2 production rates, the method enables us to more closely approach the “actual” values by decreasing the variance of the posterior distribution of the values.
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Affiliation(s)
- Gen Sakurai
- National Institute for Agro-Environmental Sciences, Tsukuba, Ibaraki, Japan
| | - Seiichiro Yonemura
- National Institute for Agro-Environmental Sciences, Tsukuba, Ibaraki, Japan
| | | | - Shohei Murayama
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
| | - Toshiyuki Ohtsuka
- River Basin Research Center, Gifu University, Gifu City, Gifu, Japan
| | - Masayuki Yokozawa
- Graduate School of Engineering, Shizuoka University, Hamamatsu, Shizuoka, Japan
- * E-mail:
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Ishidoya S, Murayama S, Kondo H, Saigusa N, Kishimoto-Mo AW, Yamamoto S. Observation of O2:CO2 exchange ratio for net turbulent fluxes and its application to forest carbon cycles. Ecol Res 2015. [DOI: 10.1007/s11284-014-1241-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wagai R, Kishimoto-Mo AW, Yonemura S, Shirato Y, Hiradate S, Yagasaki Y. Linking temperature sensitivity of soil organic matter decomposition to its molecular structure, accessibility, and microbial physiology. Glob Chang Biol 2013; 19:1114-1125. [PMID: 23504889 DOI: 10.1111/gcb.12112] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 11/09/2012] [Accepted: 11/23/2012] [Indexed: 06/01/2023]
Abstract
Temperature sensitivity of soil organic matter (SOM) decomposition may have a significant impact on global warming. Enzyme-kinetic hypothesis suggests that decomposition of low-quality substrate (recalcitrant molecular structure) requires higher activation energy and thus has greater temperature sensitivity than that of high-quality, labile substrate. Supporting evidence, however, relies largely on indirect indices of substrate quality. Furthermore, the enzyme-substrate reactions that drive decomposition may be regulated by microbial physiology and/or constrained by protective effects of soil mineral matrix. We thus tested the kinetic hypothesis by directly assessing the carbon molecular structure of low-density fraction (LF) which represents readily accessible, mineral-free SOM pool. Using five mineral soil samples of contrasting SOM concentrations, we conducted 30-days incubations (15, 25, and 35 °C) to measure microbial respiration and quantified easily soluble C as well as microbial biomass C pools before and after the incubations. Carbon structure of LFs (<1.6 and 1.6-1.8 g cm(-3) ) and bulk soil was measured by solid-state (13) C-NMR. Decomposition Q10 was significantly correlated with the abundance of aromatic plus alkyl-C relative to O-alkyl-C groups in LFs but not in bulk soil fraction or with the indirect C quality indices based on microbial respiration or biomass. The warming did not significantly change the concentration of biomass C or the three types of soluble C despite two- to three-fold increase in respiration. Thus, enhanced microbial maintenance respiration (reduced C-use efficiency) especially in the soils rich in recalcitrant LF might lead to the apparent equilibrium between SOM solubilization and microbial C uptake. Our results showed physical fractionation coupled with direct assessment of molecular structure as an effective approach and supported the enzyme-kinetic interpretation of widely observed C quality-temperature relationship for short-term decomposition. Factors controlling long-term decomposition Q10 are more complex due to protective effect of mineral matrix and thus remain as a central question.
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Affiliation(s)
- Rota Wagai
- National Institute for Agro-Environmental Sciences, Tsukuba, Ibaraki, Japan.
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