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Yuan QS, Xu J, Jiang W, Ou X, Wang H, Guo L, Xiao C, Wang Y, Wang X, Kang C, Zhou T. Insight to shape of soil microbiome during the ternary cropping system of Gastradia elata. BMC Microbiol 2020; 20:108. [PMID: 32370761 PMCID: PMC7201697 DOI: 10.1186/s12866-020-01790-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 04/16/2020] [Indexed: 11/18/2022] Open
Abstract
Background The ternary cropping system of Gastradia elata depends on a symbiotic relationship with the mycorrhizal fungi Armillaria mellea, which decays wood to assimilate nutrition for the growth of G. elata. The composition of microbe flora as key determinants of rhizoshere and mycorrhizoshere soil fertility and health was investigated to understand how G. elata and A. mellea impacted on its composition. The next generation pyrosequencing analysis was applied to assess the shift of structure of microbial community in rhizoshere of G. elata and mycorrhizoshere of A. mellea compared to the control sample under agriculture process. Results The root-associated microbe floras were significantly impacted by rhizocompartments (including rhizoshere and mycorrhizoshere) and agriculture process. Cropping process of G. elata enhanced the richness and diversity of the microbial community in rhizoshere and mycorrhizoshere soil. Furthermore, planting process of G. elata significantly reduced the abundance of phyla Basidiomycota, Firmicutes and Actinobacteria, while increased the abundance of phyla Ascomycota, Chloroflexi, Proteobacteria, Planctomycetes, and Gemmatimonadetes in rhizoshere and mycorrhizoshere. Besides, A. mellea and G. elata significantly enriched several members of saprophytoic and pathogenic fungus (i.e., Exophiala, Leptodontidium, Cosmospora, Cercophora, Metarhizium, Ilyonectria, and Sporothrix), which will enhance the possibility of G. elata disease incidence. At the same time, the ternary cropping system significantly deterred several members of beneficial ectomycorrhizal fungus (i.e., Russula, Sebacina, and Amanita), which will reduce the ability to protect G. elata from diseases. Conclusions In the ternary cropping system of G. elata, A. mellea and G. elata lead to imbalance of microbial community in rhizoshere and mycorrhizoshere soil, suggested that further studies on maintaining the balance of microbial community in A. mellea mycorrhizosphere and G. elata rhizosphere soil under field conditions may provide a promising avenue for high yield and high quality G. elata.
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Affiliation(s)
- Qing-Song Yuan
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China
| | - Jiao Xu
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China
| | - Weike Jiang
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China
| | - Xiaohong Ou
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China
| | - Hui Wang
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China
| | - Lanping Guo
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Chenghong Xiao
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China
| | - Yanhong Wang
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China
| | - Xiao Wang
- Shandong Analysis and Test Center, Shandong Academic of Sciences, Jinan, 250014, Shandong, China
| | - Chuanzhi Kang
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Tao Zhou
- Guizhou University of Traditional Chinese Medicine, Dongqingnan Road, Guiyang, 540025, Guizhou, China.
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Zhang S, Wang Y, Sun L, Qiu C, Ding Y, Gu H, Wang L, Wang Z, Ding Z. Organic mulching positively regulates the soil microbial communities and ecosystem functions in tea plantation. BMC Microbiol 2020; 20:103. [PMID: 32349665 PMCID: PMC7191807 DOI: 10.1186/s12866-020-01794-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/19/2020] [Indexed: 11/13/2022] Open
Abstract
Background Different mulches have variable effects on soil physicochemical characteristics, bacterial and fungal communities and ecosystem functions. However, the information about soil microbial diversity, community structure and ecosystem function in tea plantation under different mulching patterns was limited. In this study, we investigated bacterial and fungal communities of tea plantation soils under polyethylene film and peanut hull mulching using high-throughput 16S rRNA and ITS rDNA gene Illumina sequencing. Results The results showed that the dominant bacterial phyla were Proteobacteria, Actinobacteria, Acidobacteria and Chloroflexi, and the dominant fungal phyla were Ascomycota, Mortierellomycota and Basidiomycota in all samples, but different mulching patterns affected the distribution of microbial communities. At the phylum level, the relative abundance of Nitrospirae in peanut hull mulching soils (3.24%) was significantly higher than that in polyethylene film mulching soils (1.21%) in bacterial communities, and the relative abundances of Mortierellomycota and Basidiomycota in peanut hull mulching soils (33.72, 21.93%) was significantly higher than that in polyethylene film mulching soils (14.88, 6.53%) in fungal communities. Peanut hull mulching increased the diversity of fungal communities in 0–20 cm soils and the diversity of bacterial communities in 20–40 cm soils. At the microbial functional level, there was an enrichment of bacterial functional features, including amino acid transport and metabolism and energy production and conversion, and there was an enrichment of fungal functional features, including undefined saprotrophs, plant pathogens and soils aprotrophs. Conclusions Unique distributions of bacterial and fungal communities were observed in soils under organic mulching. Thus, we believe that the organic mulching has a positive regulatory effect on the soil bacterial and fungal communities and ecosystem functions, and so, is more suitable for tea plantation.
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Affiliation(s)
- Shuning Zhang
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Yu Wang
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Litao Sun
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Chen Qiu
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Yiqian Ding
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Honglian Gu
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Linjun Wang
- Weihai agricultural and rural affairs service center, Weihai, 264200, Shandong, China
| | - Zhaoshun Wang
- Weihai agricultural and rural affairs service center, Weihai, 264200, Shandong, China
| | - Zhaotang Ding
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China.
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Chen SN, Shang PL, Kang PL, Du MM. Metabolic Functional Community Diversity of Associated Bacteria during the Degradation of Phytoplankton from a Drinking Water Reservoir. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17051687. [PMID: 32150960 PMCID: PMC7084786 DOI: 10.3390/ijerph17051687] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/24/2020] [Accepted: 03/03/2020] [Indexed: 11/23/2022]
Abstract
In the drinking water reservoir ecosystem, phytoplankton and bacteria play important roles in shaping freshwater health and function. In this work, the associated bacterial community functional diversity during degradation of phytoplankton was determined using the substrate utilization profiling (BIOLOG) technique, meanwhile, the composition and concentration of phytoplankton were examined using a microscope. The results indicated that Euglena decreased 58.33% from 0 to 38 d, while the smallest degradation of Bacillariophyta was 20.19%. Average well color development (AWCD590nm) increased during the static periods from 0 to 38 d; however, the AWCD590nm of 18 and 38 d had no significant difference (p < 0.05). The Simpson’s index (D) was in accordance with Shannon’s diversity (H) and species richness(S); it was measured to be18 > 38 > 5 > 0 d. There were significant differences in the pattern and level of carbon sources used by the phytoplankton-associated bacteria. In addition, the principle component analyses (PCA) suggested that the first principle component (PC1) and the second principle component (PC2) explained 46.76% and 21.49% of the total variation for bacterial community, respectively. Redundancy analysis (RDA) revealed that cell abundance of phytoplankton was negatively correlated with the AWCD590nm, amino acids and other functional indexes. Therefore, the data suggest that there are differences in the phytoplankton-associated bacterial community functional diversity during different static stages of water samples collected from the drinking water reservoir.
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Affiliation(s)
- Sheng-Nan Chen
- Correspondence: ; Fax: +86-29-82202729; Tel.: +86-29-82202854
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