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Jia X, Lin S, Wang Y, Zhang Q, Jia M, Li M, Chen Y, Cheng P, Hong L, Zhang Y, Ye J, Wang H. Recruitment and Aggregation Capacity of Tea Trees to Rhizosphere Soil Characteristic Bacteria Affects the Quality of Tea Leaves. PLANTS (BASEL, SWITZERLAND) 2024; 13:1686. [PMID: 38931118 PMCID: PMC11207862 DOI: 10.3390/plants13121686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/07/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024]
Abstract
There are obvious differences in quality between different varieties of the same plant, and it is not clear whether they can be effectively distinguished from each other from a bacterial point of view. In this study, 44 tea tree varieties (Camellia sinensis) were used to analyze the rhizosphere soil bacterial community using high-throughput sequencing technology, and five types of machine deep learning were used for modeling to obtain characteristic microorganisms that can effectively differentiate different varieties, and validation was performed. The relationship between characteristic microorganisms, soil nutrient transformation, and tea quality formation was further analyzed. It was found that 44 tea tree varieties were classified into two groups (group A and group B) and the characteristic bacteria that distinguished them came from 23 genera. Secondly, the content of rhizosphere soil available nutrients (available nitrogen, available phosphorus, and available potassium) and tea quality indexes (tea polyphenols, theanine, and caffeine) was significantly higher in group A than in group B. The classification result based on both was consistent with the above bacteria. This study provides a new insight and research methodology into the main reasons for the formation of quality differences among different varieties of the same plant.
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Affiliation(s)
- Xiaoli Jia
- College of Tea and Food, Wuyi University, Wuyishan 354300, China; (X.J.); (J.Y.)
| | - Shaoxiong Lin
- College of Life Science, Longyan University, Longyan 364012, China
| | - Yuhua Wang
- College of JunCao Science and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qi Zhang
- College of Tea and Food, Wuyi University, Wuyishan 354300, China; (X.J.); (J.Y.)
| | - Miao Jia
- College of Tea and Food, Wuyi University, Wuyishan 354300, China; (X.J.); (J.Y.)
| | - Mingzhe Li
- College of Life Science, Longyan University, Longyan 364012, China
| | - Yiling Chen
- College of Life Science, Longyan University, Longyan 364012, China
| | - Pengyuan Cheng
- College of Life Science, Longyan University, Longyan 364012, China
| | - Lei Hong
- College of Life Science, Longyan University, Longyan 364012, China
- College of JunCao Science and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ying Zhang
- College of Tea and Food, Wuyi University, Wuyishan 354300, China; (X.J.); (J.Y.)
| | - Jianghua Ye
- College of Tea and Food, Wuyi University, Wuyishan 354300, China; (X.J.); (J.Y.)
| | - Haibin Wang
- College of Tea and Food, Wuyi University, Wuyishan 354300, China; (X.J.); (J.Y.)
- College of Life Science, Longyan University, Longyan 364012, China
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Xie Q, Xu H, Wen R, Wang L, Yang Y, Zhang H, Su B. Integrated management of fruit trees and Bletilla striata: implications for soil nutrient profiles and microbial community structures. Front Microbiol 2024; 15:1307677. [PMID: 38511009 PMCID: PMC10951077 DOI: 10.3389/fmicb.2024.1307677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 02/14/2024] [Indexed: 03/22/2024] Open
Abstract
Introduction Forest medicinal compound systems in agroforestry ecosystems represent a multi-layered cultivation approach that utilizes forest resources efficiently. However, research on how these systems affect soil nutrients and microbial communities is limited. Methods This study compared the soil chemical properties and microbial communities of Bletilla striata (C) grown alone versus in agroforestry systems with apple (PB), pear (LB), and peach trees (TB), aiming to understand the impact of these systems on soil health and microbial diversity. Results Soil in the GAB systems showed increased levels of essential nutrients but lower pH and ammonium nitrogen levels compared to the control. Significant improvements in organic matter, total phosphorus, and total potassium were observed in TB, PB, and LB systems, respectively. The bacterial diversity increased in GAB systems, with significant changes in microbial phyla indicative of a healthier soil ecosystem. The correlation between soil properties and bacterial communities was stronger than with fungal communities. Discussion Integrating B. striata with fruit trees enhances soil nutrients and microbial diversity but may lead to soil acidification. Adjustments such as using controlled-release fertilizers and soil amendments like lime could mitigate negative impacts, improving soil health in GAB systems.
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Affiliation(s)
- Qiufeng Xie
- College of Pharmaceutical Science, Dali University, Dali, China
- Western Yunnan Traditional Chinese Medicine and Ethnic Drug Engineering Center, College of Pharmacy, Dali University, Dali, China
| | - Huimei Xu
- College of Pharmaceutical Science, Dali University, Dali, China
- Western Yunnan Traditional Chinese Medicine and Ethnic Drug Engineering Center, College of Pharmacy, Dali University, Dali, China
| | - Rouyuan Wen
- College of Pharmaceutical Science, Dali University, Dali, China
- Western Yunnan Traditional Chinese Medicine and Ethnic Drug Engineering Center, College of Pharmacy, Dali University, Dali, China
| | - Le Wang
- College of Pharmaceutical Science, Dali University, Dali, China
| | - Yan Yang
- College of Pharmaceutical Science, Dali University, Dali, China
| | - Haizhu Zhang
- College of Pharmaceutical Science, Dali University, Dali, China
- Western Yunnan Traditional Chinese Medicine and Ethnic Drug Engineering Center, College of Pharmacy, Dali University, Dali, China
| | - BaoShun Su
- Dali Lin Yun Biotechnology Development Co., Ltd., Dali, China
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Yu X, Zhang Y, Shen M, Dong S, Zhang F, Gao Q, He P, Shen G, Yang J, Wang Z, Bo G. Soil Conditioner Affects Tobacco Rhizosphere Soil Microecology. MICROBIAL ECOLOGY 2023; 86:460-473. [PMID: 35596751 DOI: 10.1007/s00248-022-02030-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
Reasonable fertilization management can increase nutrient content and enzyme activity in rhizosphere soil, and even increase soil microbial richness. However, different fertilizers could raise distinct influences on the soil properties, including soil environmental factors (physicochemical properties and enzymatic activities) and microbial community. Here, the effects of two soil amendments (microbial fertilizer and woody peat) on environmental factors and microbial community structure in tobacco rhizosphere soil were evaluated, with the correlations between microbes and environmental factors explored. As the results, microbial fertilizer could effectively alleviate soil acidification, increase available potassium and organic matter contents in soil, and was also beneficial to increase nitrate reductase activity in rhizosphere soil. Fertilizers cause changes in the abundance of certain microbes in the soil. Besides, it was shown that the candidate phyla Gal15, Acidobacterota, Latescibacterota, Mortierellommycota, Basidiomycota, and Rozellomycota in tobacco rhizosphere soil had significant correlation with soil environmental factors. Through the functional analysis of these populations, it can be deduced that the changes in the abundance of certain microorganisms may be an important reason for the differences in environmental factors. All these indicated that the differences of environmental factors in different treatments are closely related to the abundance of some special soil microorganisms. Studying the life activities of these microbes would provide good guidance for exploring the interaction among crops, soil, and microorganisms and improving crop yields.
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Affiliation(s)
- Xiangquan Yu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Yuzhen Zhang
- Energy-Rich Compounds Production By Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Minchong Shen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Shanyu Dong
- Yichang Tobacco Company of Hubei Province, Yichang, China
| | - Fujun Zhang
- Linyi Tobacco Company of Shandong Province, Linyi, China
| | - Qiang Gao
- Linyi Tobacco Company of Shandong Province, Linyi, China
| | - Penglin He
- Linyi Tobacco Company of Shandong Province, Linyi, China
| | - Guoming Shen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Jianming Yang
- Energy-Rich Compounds Production By Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Zhaobao Wang
- Energy-Rich Compounds Production By Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China.
| | - Guodong Bo
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China.
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Zhang X, Huang Z, Zhong Z, Li Q, Bian F, Gao G, Yang C, Wen X. Evaluating the Rhizosphere and Endophytic Microbiomes of a Bamboo Plant in Response to the Long-Term Application of Heavy Organic Amendment. PLANTS (BASEL, SWITZERLAND) 2022; 11:2129. [PMID: 36015431 PMCID: PMC9412275 DOI: 10.3390/plants11162129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/12/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Root-associated bacteria play a major role in plant health and productivity. However, how organic amendment influences root-associated bacteria is uncertain in Lei bamboo (Phyllostachys praecox) plantations. Here, we compared the rhizosphere and endophytic microbiomes in two Lei bamboo plantations with (IMS) and without (TMS) the application of organic amendment for 16 years. The results showed IMS significantly increased (p < 0.05) the relative abundance of Proteobacteria and significantly decreased (p < 0.05) the relative abundance of Acidobacteria, Bacteroidetes, and Verrucomicrobiota. The root endophytic Proteobacteria and Acidobacteria were significantly higher in abundance (p < 0.05) in the IMS than in the TMS, while Actinobacteria and Firmicutes were significantly lower in abundance. Five taxa were assigned to Proteobacteria and Acidobacteria, which were identified as keystones in the rhizosphere soil microbiome, while two species taxonomically affiliated with Proteobacteria were identified as keystones in the root endophytic microbiota, indicating this phylum can be an indicator for a root-associated microbiome in response to IMS. The soil pH, soil total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), available potassium (AK), and TOC:TP ratio were significantly correlated (p < 0.05) with the bacterial community composition of both rhizosphere soils and root endophytes. TMS increased the microbial network complexity of root endophytes but decreased the microbial network complexity of rhizosphere soil. Our results suggest IMS shapes the rhizosphere and endophytic bacterial community compositions and their interactions differently, which should be paid attention to when designing management practices for the sustainable development of forest ecosystems.
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Affiliation(s)
- Xiaoping Zhang
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
- Engineering Research Center of Biochar of Zhejiang Province, Hangzhou 310021, China
| | - Zhiyuan Huang
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
| | - Zheke Zhong
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
| | - Qiaoling Li
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
| | - Fangyuan Bian
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
| | - Guibin Gao
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
| | - Chuanbao Yang
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
| | - Xing Wen
- China National Bamboo Research Center, Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China
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Fang J, Bai XT, Qi L, Vukanti R, Ge Y. Rare-earth metal oxide nanoparticles decouple the linkage between soil bacterial community structure and function by selectively influencing potential keystone taxa. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 298:118863. [PMID: 35063538 DOI: 10.1016/j.envpol.2022.118863] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 01/11/2022] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
Excessive production and application of rare-earth metal oxide nanoparticles warrants assessment of their environmental risks. Little is known about the impact of these nanoparticles on soil bacterial communities. We quantified the effects of nano-Gd2O3 and nano-La2O3, at the different concentrations and exposure regimes, on soil bacterial community structure and function as well as the structure-function relationship. Further, we constructed and analyzed a co-occurrence network to identify and characterize potential keystone taxa that were related to the enzyme activities and responded to the increasing concentrations of nanoparticles. Both nano-Gd2O3 and nano-La2O3 significantly altered the bacterial community structure and function in a concentration-dependent manner; however, these negative effects were observed on day 1 or day 7 but not on day 60, indicating that these effects were transient and the bacterial communities can mitigate the effect of these nanoparticles over time. Interestingly, the nanoparticle exposure decoupled the relationship between the structure and function of the soil bacterial communities. The decoupling was due to changes in the composition and relative abundances of potential keystone taxa related to bacterial community functions. Altogether, we provide insights into the interactions between the rare-earth metal oxide nanoparticles and soil bacterial communities. Our results facilitate the environmental risk assessment and safe usage of rare-earth metal oxide nanoparticles.
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Affiliation(s)
- Junnan Fang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xue-Ting Bai
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lin Qi
- Agricultural College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Raja Vukanti
- Department of Microbiology, Bhavan's Vivekananda College, Secunderabad, 500094, India
| | - Yuan Ge
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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Genotypic Diversity Improves Photosynthetic Traits of Hydrocotyle vulgaris and Alters Soil Organic Matter and N2O Emissions of Wetland Microecosystems. WATER 2022. [DOI: 10.3390/w14060872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In plant communities, genotypic diversity can impact the plant community structure and ecosystem functions, but related research has focused on native plants. Therefore, whether genotypic diversity affects the growth of invasive plants and then changes the wetland microecosystem remains unresolved. In this study, six different genotypes of Hydrocotyle vulgaris, a common invasive plant in China, were selected to construct populations with three different genotypic diversity levels (one, three, and six genotype combinations, respectively) to explore the effects of different genotypic diversity levels on the growth and physiological traits of H. vulgaris, and soil nutrients and greenhouse gas emissions of the wetland microecosystem under flooding conditions. We found that genotypic diversity improved the leaf area, root to shoot ratio and photosynthetic physiological traits of H. vulgaris, especially under flooding. Moreover, genotypic diversity increased soil organic matter (SOM) contents in the wetland microecosystem, while it reduced the cumulative nitrous oxide emissions under flooding conditions. Overall, genotype diversity improved photosynthetic traits of H. vulgaris, further increased SOM, and reduced the N2O emissions of the wetland microecosystem. The results of this study can provide a theoretical basis for exploring how genotypic diversity levels affect the invasiveness of invasive plants and ecosystems in wetland microecosystems.
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Heterotrophic Bacteria Play an Important Role in Endemism of Cephalostachyum pingbianense (Hsueh & Y.M. Yang ex Yi et al.) D.Z. Li & H.Q. Yang, 2007, a Full-Year Shooting Woody Bamboo. FORESTS 2022. [DOI: 10.3390/f13010121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The previous studies show soil microbes play a key role in the material and nutrient cycles in the forest ecosystem, but little is known about how soil microbes respond to plant distribution, especially in the soil bacterial community in woody bamboo forests. Cephalostachyum pingbianense (Hsueh & Y.M. Yang ex Yi et al.) D.Z. Li & H.Q. Yang, 2007 is known as the only bamboo species producing shoots all year round in natural conditions. Endemic to the Dawei mountain in Yunnan of China, this species is a good case to study how soil bacteria respond to plant endemic distribution. In this work, we assayed the soil chemical properties, enzyme activity, changes in the bacterial community along the distribution range of the C. pingbianense forest. The results showed that soil nutrients at the range edge were nitrogen-rich but phosphorus-deficient, and soil pH value and soil urease activity were significantly lower than that of the central range. No significant difference was detected in soil bacterial diversity, community composition, and function between the central and marginal range of C. pingbianense forest. Notably, the relative abundance of heterotrophy bacteria, such as Variibacter and Acidothermus, in the soil of the C. pingbianense forest was significantly higher than that of the outside range, which may lead to a higher soil organic carbon mineralization rate. These results imply that abundant heterotrophy bacteria were linked to the endemism and full-year shooting in C. pingbianense. Our study is amongst the first cases demonstrating the important role of heterotrophy bacteria in the distribution formation of endemic woody bamboos in special soil habitats, and provides insight into germplasm conservation and forest management in woody bamboos.
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Selected rhizosphere bacteria are associated with endangered species - Scutellaria tsinyunensis via comparative microbiome analysis. Microbiol Res 2021; 258:126917. [DOI: 10.1016/j.micres.2021.126917] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/28/2021] [Accepted: 11/09/2021] [Indexed: 11/22/2022]
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Zhang X, Gai X, Zhong Z, Bian F, Yang C, Li Y, Wen X. Understanding variations in soil properties and microbial communities in bamboo plantation soils along a chromium pollution gradient. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 222:112507. [PMID: 34265530 DOI: 10.1016/j.ecoenv.2021.112507] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 06/13/2023]
Abstract
With high biomass productivity and resistance to heavy metals (HM) stress, bamboo has strong potential for HM phytoremediation. However, few studies have been conducted under field conditions to explore changes in soil physicochemical and microbial properties of bamboo forests with HM-contaminated soils. This study established bamboo (Phyllostachys praecox) plantations in five Cr-contaminated sites with different pollution levels (low, L; low-moderate, LM; moderate, M; moderate-high, MH; and high, H). We determined soil chemical properties, total and available Cr content, as well as bacterial and fungal community structures from 0 to 20 cm depth along the pollution gradient, and evaluated their interactions. The results revealed a corresponding decrease in soil pH, alkali-hydrolysable N (AN), along with urease and sucrase activities, as Cr pollution increased. In contrast, total organic carbon (TOC) increased with increasing Cr pollution. Soil available P (AP) and acid phosphatase activity did not differ significantly. Different pollution level resulted in distinct bacterial and fungal communities, with Proteobacteria, Acidobacteria, Actinobacteria, Ascomycota, and Basidiomycota being the dominant phyla across the five bamboo soils. Both total Cr (TCr) and HCl-extractable Cr (ACr) negatively correlated with alpha indices (Chao1 and Shannon) for bacteria but not for fungi, indicating that the latter is more resistant to Cr pollution. Decrease in soil pH and increase in TCr and ACr from L to H were closely related to the shift of bacterial and fungal communities. These changes reduced soil N and C cycles. Our findings suggest that improving soil acidic conditions and N availability enhances carbon and nitrogen cycles via altering soil microbial structure and activities. This, in turn, can increase phytoremediation efficiency in the bamboo ecosystem.
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Affiliation(s)
- Xiaoping Zhang
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China; National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou, Zhejiang 310012, PR China; Engineering Research Center of Biochar of Zhejiang Province, Hangzhou, Zhejiang 310021, PR China
| | - Xu Gai
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China; National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou, Zhejiang 310012, PR China
| | - Zheke Zhong
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China; National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou, Zhejiang 310012, PR China.
| | - Fangyuan Bian
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China; National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou, Zhejiang 310012, PR China
| | - Chuanbao Yang
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China; National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou, Zhejiang 310012, PR China
| | - Yongfu Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Xing Wen
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China; National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou, Zhejiang 310012, PR China
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Cai JF, Zhang L, Zhang Y, Zhang MX, Li HL, Xia HJ, Kong WJ, Yu FH. Remediation of cadmium-contaminated coastal saline-alkaline soil by Spartina alterniflora derived biochar. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111172. [PMID: 32846300 DOI: 10.1016/j.ecoenv.2020.111172] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/28/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Following oil extraction in the wetland of the Yellow River Delta, heavy metal contamination of coastal saline-alkaline soil, especially with cadmium (Cd), has become a serious environmental problem in some regions. Biochar application has been proposed to remedy Cd-contaminated soil, but the remediation effect is related to preparation conditions of biochar (e.g., pyrolysis temperature and raw material) and soil properties. The invasive plant, Spartina alterniflora, produces a high amount of biomass, making it suitable for biochar production in coastal China. We investigated the effect of S. alterniflora-derived biochar (SDB) pyrolyzed at four temperatures (350, 450, 550, and 650 °C) crossed with three addition ratios (1, 5, and 10%) and control on Cd contamination of coastal saline-alkaline soil. Pyrolysis temperature affected pH, surface area, and functional groups of SDB. SDB markedly improved soil pH and soil organic matter, but the degree of improvement was affected by pyrolysis temperature and addition ratio. SDB significantly altered available Cd content in soil, but reduced it only at low pyrolysis temperatures (350 and 450 °C). Available Cd content had a positive correlation with soil pH (R2 = 0.298, P < 0.01), but was not related to salinity and soil organic matter content. Thus, SDB pyrolyzed at 350 °C with 5% addition was optimal for passivating Cd in coastal saline-alkaline soil, since available Cd content in soil decreased mostly (by 26.9%). These findings act as a reference for the development of an application strategy for SDB to ameliorate Cd-contaminated coastal saline-alkaline soil.
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Affiliation(s)
- Jing-Fang Cai
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China
| | - Li Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China
| | - Yu Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China
| | - Ming-Xiang Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China
| | - Hong-Li Li
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China.
| | - Hui-Juan Xia
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Wei-Jing Kong
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Fei-Hai Yu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China; Institute of Wetland Ecology & Clone Ecology, Taizhou University, Taizhou, 318000, China
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11
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Zhang X, Bian F, Zhong Z, Gai X, Yang C. Deciphering the rhizosphere microbiome of a bamboo plant in response to different chromium contamination levels. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123107. [PMID: 32937721 DOI: 10.1016/j.jhazmat.2020.123107] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/13/2020] [Accepted: 06/01/2020] [Indexed: 06/11/2023]
Abstract
Bamboo has been considered a potential plant species for phytoremediation due to its high biomass and heavy metal (HM) resistance. However, little is known about the interactions between bamboo and soil microbial activities in HM-contaminated soils. Here, we investigated the characteristics of microbial communities in the rhizosphere soil of Lei bamboo (Phyllostachys praecox) along a chromium (Cr) gradient. We found that the soil Cr content was positively correlated with the total organic carbon (TOC) and HCl-extractable Cr but negatively correlated with the pH and bacterial and fungal Shannon indices. Proteobacteria and Ascomycota predominated in the bamboo rhizosphere under Cr pollution. A co-occurrence network showed that two of the most Cr-sensitive bacterial genera and keystone taxa were from the Acidobacteria, indicating that this phylum can be as an indicator for the studied Cr-polluted soils. Redundancy analysis revealed that both the soil bacterial and fungal community compositions were significantly correlated (p < 0.05) with Cr, pH, TOC, alkali-hydrolysable N (AN), and available phosphorus (AP). The increase in TOC as the Cr content increased can be ascribed to an adverse Cr effect on the soil microflora, probably because the microbial biomass was less effective in mineralizing soil C under Cr-polluted conditions.
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Affiliation(s)
- Xiaoping Zhang
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China
| | - Fangyuan Bian
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China
| | - Zheke Zhong
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China.
| | - Xu Gai
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China
| | - Chuanbao Yang
- China National Bamboo Research Center, Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, Hangzhou, Zhejiang 310012, PR China
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