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Liu M, Xue R, Yang C, Han N, Hu Y, Gu K, Zhao J, Guan S, Su J, Jiang Y. Rotation with other crops slow down the fungal process in tobacco-growing soil. Sci Rep 2024; 14:14160. [PMID: 38898096 PMCID: PMC11187129 DOI: 10.1038/s41598-024-64735-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 06/12/2024] [Indexed: 06/21/2024] Open
Abstract
Continuous cultivation of tobacco could cause serious soil health problems, which could cause bacterial soil to change to fungal soil. In order to study the diversity and richness of fungal community in tobacco-growing soil under different crop rotation, three treatments were set up in this study: CK (tobacco continuous cropping); B (barley-tobacco rotation cropping) and R (oilseed rape-tobacco rotation cropping). The results of this study showed that rotation with other crops significantly decreased the soil fungal OTUs, and also decreased the community richness, evenness, diversity and coverage of fungal communities. Among them, B decreased the most. In the analysis of the composition and structure of the fungal community, it was found that the proportion of plant pathogens Nectriaceae decreased from 19.67% in CK to 5.63% in B, which greatly reduced the possibility of soil-borne diseases. In the analysis of the correlation between soil environmental factors and fungal communities, it was found that Filobasidiaceae had a strong correlation with TP and AP, and Erysiphaceae had a strong correlation with TK and AK. NO3--N and NH4+-N were the two environmental factors with the strongest correlation with fungal communities. The results of this study showed that rotation with other crops slowed down the process of soil fungi in tobacco-growing soil and changed the dominant species of soil fungi community. At the same time, crop rotation changed the diversity and richness of soil fungal community by changing the physical and chemical properties of soil.
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Affiliation(s)
- Ming Liu
- Dali Prefecture Branch of Yunnan Tobacco Company, Dali, 671000, Yunnan, China
- SouthWest University, Chongqing, 400715, China
| | - Rujun Xue
- Weishan City Branch of Yunnan Tobacco Company, Weishan, 672400, Yunnan, China
| | - Chengwei Yang
- Dali Prefecture Branch of Yunnan Tobacco Company, Dali, 671000, Yunnan, China
| | - Ningbo Han
- Weishan City Branch of Yunnan Tobacco Company, Weishan, 672400, Yunnan, China
| | - Yanxia Hu
- Dali Prefecture Branch of Yunnan Tobacco Company, Dali, 671000, Yunnan, China
| | - Kaiyuan Gu
- SouthWest University, Chongqing, 400715, China
| | - Jie Zhao
- SouthWest University, Chongqing, 400715, China
| | - Shuyue Guan
- SouthWest University, Chongqing, 400715, China
| | - Jiaen Su
- Dali Prefecture Branch of Yunnan Tobacco Company, Dali, 671000, Yunnan, China.
| | - Yonglei Jiang
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China.
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Shen M, Wu L, Zhang Y, You R, Xiao J, Kang Y. Leaf litter from Cynanchum auriculatum Royle ex Wight leads to root rot outbreaks by Fusarium solani, hindering continuous cropping. FEMS Microbiol Ecol 2024; 100:fiae068. [PMID: 38684466 PMCID: PMC11099666 DOI: 10.1093/femsec/fiae068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 04/18/2024] [Accepted: 04/25/2024] [Indexed: 05/02/2024] Open
Abstract
Cynanchum auriculatum Royle ex Wight (CA) is experiencing challenges with continuous cropping obstacle (CCO) due to soil-borne fungal pathogens. The leaf litter from CA is regularly incorporated into the soil after root harvesting, but the impact of this practice on pathogen outbreaks remains uncertain. In this study, a fungal strain D1, identified as Fusarium solani, was isolated and confirmed as a potential factor in CCO. Both leave extract (LE) and root extract (RE) were found to inhibit seed germination and the activities of plant defense-related enzymes. The combinations of extracts and D1 exacerbated these negative effects. Beyond promoting the proliferation of D1 in soil, the extracts also enhanced the hypha weight, spore number, and spore germination rate of D1. Compared to RE, LE exhibited a greater degree of promotion in the activities of pathogenesis-related enzymes in D1. Additionally, caffeic acid and ferulic acid were identified as potential active compounds. LE, particularly in combination with D1, induced a shift in the composition of fungal communities rather than bacterial communities. These findings indicate that the water extract of leaf litter stimulated the growth and proliferation of fungal strain D1, thereby augmenting its pathogenicity toward CA and ultimately contributing to the CCO process.
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Affiliation(s)
- Min Shen
- College of Life Sciences, Anhui Normal University, Wuhu, Anhui, 241000, China
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng, Jiangsu, 224007, China
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng, 224007, China
| | - Limeng Wu
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng, Jiangsu, 224007, China
| | - Yanzhou Zhang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng, Jiangsu, 224007, China
| | - Ruiqiang You
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng, Jiangsu, 224007, China
| | - Jiaxin Xiao
- College of Life Sciences, Anhui Normal University, Wuhu, Anhui, 241000, China
| | - Yijun Kang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng, Jiangsu, 224007, China
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers University, Yancheng, 224007, China
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3
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Li X, Yi S, Chen L, Hafeez M, Zhang Z, Zhang J, Zhou S, Dong W, Huang J, Lu Y. The application of entomopathogenic nematode modified microbial communities within nesting mounds of the red imported fire ants, Solenopsis invicta. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168748. [PMID: 38008315 DOI: 10.1016/j.scitotenv.2023.168748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 11/10/2023] [Accepted: 11/19/2023] [Indexed: 11/28/2023]
Abstract
Entomopathogenic microorganisms (e.g., fungi, bacteria, nematodes) have been widely used in biological control of soil-dwelling pests, including the red imported fire ant (RIFA), Solenopsis invicta, a notorious invasive pest worldwide. The application of large amounts of entomopathogenic microorganisms to soil may affect the indigenous soil microbial communities. However, reports about the effect of entomopathogenic nematodes (EPN) on soil microbial communities are very few. In this study, the effects of EPN on RIFA populations and microbial communities in mounds were investigated. Our results showed that the application of the EPN Steinernema carpocapsae. All strain on mounds efficaciously suppressed RIFA worker populations, without forming significantly more satellite mounds compared with the control treatment. The application of EPN did not impact the bacterial and fungal diversity in soils derived from the RIFA mounds. However, it slightly altered the taxonomic make-up of the bacterial communities, but significantly altered the taxonomic composition of fungal communities at the phylum, family, and genus levels. The abundances of some beneficial bacteria and fungi, such as Streptomyces, decreased, while those of plant and animal pathogenic bacteria and fungi, dramatically increased, after EPN treatment. On the other hand, the abundances of some entomopathogenic fungi, such as Fusicolla, Clonostachys, and Mortierella, increased. Redundancy analysis or canonical correspondence analysis revealed a positive correlation between the efficacious EPN control and the presence of the insect-resistant bacteria, Sinomonas, as well as entomopathogenic fungi Fusicolla and Mortierella. This suggests that the interactions between EPN and entomopathogenic fungi may play a role in the biological control of RIFA. Our discoveries shed light on the interactions among EPN, RIFA, and soil microbial communities, and emphasize a possible mutualistic relationship between EPN and entomopathogenic fungi in the biological control of RIFA.
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Affiliation(s)
- Xiaowei Li
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Songwang Yi
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
| | - Limin Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Muhammad Hafeez
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Zhijun Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jinming Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Shuxing Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wanying Dong
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jun Huang
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Yaobin Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; Institute of Bio-Interaction, Xianghu Laboratory, Hangzhou 311258, China.
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Cao J, Zhao P, Wang D, Zhao Y, Wang Z, Zhong N. Effects of a Nanonetwork-Structured Soil Conditioner on Microbial Community Structure. BIOLOGY 2023; 12:biology12050668. [PMID: 37237482 DOI: 10.3390/biology12050668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/25/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023]
Abstract
Fertilizer application can increase yields, but nutrient runoff may cause environmental pollution and affect soil quality. A network-structured nanocomposite used as a soil conditioner is beneficial to crops and soil. However, the relationship between the soil conditioner and soil microbes is unclear. We evaluated the soil conditioner's impact on nutrient loss, pepper growth, soil improvement, and, especially, microbial community structure. High-throughput sequencing was applied to study the microbial communities. The microbial community structures of the soil conditioner treatment and the CK were significantly different, including in diversity and richness. The predominant bacterial phyla were Pseudomonadota, Actinomycetota, and Bacteroidota. Acidobacteriota and Chloroflexi were found in significantly higher numbers in the soil conditioner treatment. Ascomycota was the dominant fungal phylum. The Mortierellomycota phylum was found in significantly lower numbers in the CK. The bacteria and fungi at the genus level were positively correlated with the available K, available N, and pH, but were negatively correlated with the available P. Our results showed that the loss of nutrients controlled by the soil conditioner increased available N, which improved soil properties. Therefore, the microorganisms in the improved soil were changed. This study provides a correlation between improvements in microorganisms and the network-structured soil conditioner, which can promote plant growth and soil improvement.
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Affiliation(s)
- Jingjing Cao
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Engineering Laboratory for Advanced Microbial Technology of Agriculture, Chinese Academy of Sciences, Beijing 100101, China
| | - Pan Zhao
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Engineering Laboratory for Advanced Microbial Technology of Agriculture, Chinese Academy of Sciences, Beijing 100101, China
- The Enterprise Key Laboratory of Advanced Technology for Potato Fertilizer and Pesticide, Hulunbuir 021000, China
| | - Dongfang Wang
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yonglong Zhao
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Engineering Laboratory for Advanced Microbial Technology of Agriculture, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhiqin Wang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Engineering Laboratory for Advanced Microbial Technology of Agriculture, Chinese Academy of Sciences, Beijing 100101, China
| | - Naiqin Zhong
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Engineering Laboratory for Advanced Microbial Technology of Agriculture, Chinese Academy of Sciences, Beijing 100101, China
- The Enterprise Key Laboratory of Advanced Technology for Potato Fertilizer and Pesticide, Hulunbuir 021000, China
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Ding W, Li J, Hu B, Chu G, Tao R. Response of abundance, diversity, and network of rhizosphere fungal community to monoculture of cut chrysanthemum. Appl Microbiol Biotechnol 2023; 107:3673-3685. [PMID: 37115253 DOI: 10.1007/s00253-023-12542-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 03/31/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023]
Abstract
The effects of different monoculture years on rhizosphere fungal communities (abundance, diversity, structure, and cooccurrence network) of cut chrysanthemum were determined. Three different monoculture years were (i) planting for only 1 year (Y1), (ii) continuous monoculture for 6 years (Y6), and (iii) continuous monoculture for 12 years (Y12). Compared to the Y1 treatment, the Y12 treatment significantly decreased the rhizosphere fungal gene copy numbers but increased the potential pathogen Fusarium oxysporum (P < 0.05). Both the Y6 and Y12 treatments significantly increased fungal diversity (Shannon and Simpson indices), but Y6 had great potential to enhance fungal richness (Chao1 index) relative to the Y12 treatment. Monoculture treatments decreased the relative abundance of Ascomycota but increased that of Mortierellomycota. Four ecological clusters (Modules 0, 3, 4, and 9) were observed in the fungal cooccurrence network across the Y1, Y6, and Y12 treatments, and only Module 0 was significantly enriched in the Y12 treatment and associated with soil properties (P < 0.05). RDA (redundancy analysis) and Mantel analysis showed that soil pH and soil nutrients (organic carbon, total nitrogen, and available phosphorus) were the key factors affecting fungal communities during monoculture of cut chrysanthemum. Overall, the changes in soil properties were responsible for shaping rhizospheric soil fungal communities in long-term rather than short-term monoculture systems. KEY POINTS: • Both short- and long-term monocultures reshaped the soil fungal community structure. • Long-term monoculture enhanced the network complexity of the fungal community. • Soil pH, C and N levels mainly drove modularization in the fungal community network.
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Affiliation(s)
- Wangying Ding
- Department of Environmental Science and Engineering, School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Jun Li
- Department of Environmental Science and Engineering, School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Baowei Hu
- Department of Environmental Science and Engineering, School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Guixin Chu
- Department of Environmental Science and Engineering, School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Rui Tao
- Department of Environmental Science and Engineering, School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China.
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6
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Xu X, Luo Q, Wei Q, Jiang S, Dong C, Faruque MO, Huang Z, Xu Z, Yin C, Zhu Z, Hu X. The Deterioration of Agronomical Traits of the Continuous Cropping of Stevia Is Associated With the Dynamics of Soil Bacterial Community. Front Microbiol 2022; 13:917000. [PMID: 35847059 PMCID: PMC9277660 DOI: 10.3389/fmicb.2022.917000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 05/12/2022] [Indexed: 11/25/2022] Open
Abstract
Stevia rebaudiana Bertoni is grown worldwide as an important, natural sweetener resource plant. The yield of steviol glycosides (SVglys) is greatly influenced by continuous cropping. In this study, we collected the roots, rhizosphere soils, and bulk soils from 2 years of continuous cropping (Y2) and 8 years of continuous cropping (Y8). A high-throughput sequencing technology based on Illumina Hiseq 2500 platform was used to study the structure and diversity of bacterial communities in the roots and soils of stevia with different years of continuous cropping. The results demonstrated that although the content of a group of SVglys was significantly increased in stevia of long-term continuous cropping, it inhibited the growth of plants and lowered the leaf dry weight; as a result, the total amount of SVglys was significantly decreased. Meanwhile, continuous cropping changed the physicochemical properties and the bacterial composition communities of soil. The different sampling sources of the root, rhizosphere soil, and bulk soil had no impact on the richness of bacterial communities, while it exhibited obvious effects on the diversity of bacterial communities. Continuous cropping had a stronger effect on the bacterial community composition in rhizosphere soil than in root and bulk soil. Based on linear discriminant analysis effect size (LEfSe), in the rhizosphere soil of Y8, the relative abundance of some beneficial bacterial genera of Sphingomonas, Devosia, Streptomyces, and Flavobacterium decreased significantly, while the relative abundance of Polycyclovorans, Haliangium, and Nitrospira greatly increased. Moreover, the soil pH and nutrient content, especially the soil organic matter, were correlated with the relative abundance of predominant bacteria at the genus level. This study provides a theoretical basis for uncovering the mechanism of obstacles in continuous stevia cropping and provides guidance for the sustainable development of stevia.
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Affiliation(s)
- Xinjuan Xu
- Institute for Medicinal Plants, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- College of Life Science and Technology, Collaborative Innovation Center of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
- National-Regional Joint Engineering Research Center in Hubei for Medicinal Plant Breeding and Cultivation, Huazhong Agricultural University, Wuhan, China
- Medicinal Plant Engineering Research Center of Hubei Province, Huazhong Agricultural University, Wuhan, China
- Innovation Academy of International Traditional Chinese Medicinal Materials, Huazhong Agricultural University, Wuhan, China
| | - Qingyun Luo
- Department of Traditional Chinese Medicinal Materials, College of Horticulture, Nanjing Agricultural University, Nanjing, China
- Qingyun Luo
| | - Qichao Wei
- Innovation Academy of International Traditional Chinese Medicinal Materials, Huazhong Agricultural University, Wuhan, China
| | - Shangtao Jiang
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization/Educational Ministry Engineering Center of Resource-Saving Fertilizers/Jiangsu Collaborative Innovation Center of Solid Organic Waste, Nanjing Agricultural University, Nanjing, China
| | - Caixia Dong
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization/Educational Ministry Engineering Center of Resource-Saving Fertilizers/Jiangsu Collaborative Innovation Center of Solid Organic Waste, Nanjing Agricultural University, Nanjing, China
| | - Mohammad Omar Faruque
- Ethnobotany and Pharmacognosy Lab, Department of Botany, University of Chittagong, Chittagong, Bangladesh
| | - Zhongwen Huang
- Innovation Academy of International Traditional Chinese Medicinal Materials, Huazhong Agricultural University, Wuhan, China
| | - Zhenghua Xu
- Institute for Medicinal Plants, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- College of Life Science and Technology, Collaborative Innovation Center of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
- National-Regional Joint Engineering Research Center in Hubei for Medicinal Plant Breeding and Cultivation, Huazhong Agricultural University, Wuhan, China
- Medicinal Plant Engineering Research Center of Hubei Province, Huazhong Agricultural University, Wuhan, China
| | - Changxi Yin
- Institute for Medicinal Plants, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- College of Life Science and Technology, Collaborative Innovation Center of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
- National-Regional Joint Engineering Research Center in Hubei for Medicinal Plant Breeding and Cultivation, Huazhong Agricultural University, Wuhan, China
- Medicinal Plant Engineering Research Center of Hubei Province, Huazhong Agricultural University, Wuhan, China
| | - Zaibiao Zhu
- Department of Traditional Chinese Medicinal Materials, College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Xuebo Hu
- Institute for Medicinal Plants, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- College of Life Science and Technology, Collaborative Innovation Center of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
- National-Regional Joint Engineering Research Center in Hubei for Medicinal Plant Breeding and Cultivation, Huazhong Agricultural University, Wuhan, China
- Medicinal Plant Engineering Research Center of Hubei Province, Huazhong Agricultural University, Wuhan, China
- *Correspondence: Xuebo Hu
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Zhao Q, Bai J, Jia J, Zhang G, Wang J, Gao Y. The Effects of Drainage on the Soil Fungal Community in Freshwater Wetlands. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.837747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Wetland drainage has been intensively implemented globally, and it has exerted significant effects on wetland ecosystems. The effects of wetland drainage on the soil fungal community remain to be clarified. Soil samples were collected at depths of 0–5 and 5–10 cm in freshwater Phragmites australis wetlands to investigate changes in the fungal community before and after drainage (termed FW and DFW, respectively) using high-throughput sequencing of the fungal-specific internal transcribed spacer 1 (ITS1) gene region. No significant differences in the α diversity of the soil fungal community were found in 0–10 cm soils between FW and DFW (p > 0.05), except for the abundance-based coverage estimator (ACE) and Chao1 indices in 5–10 cm soils. Significantly higher values of ACE and Chao1 in 5–10 cm soils in FW than in DFW indicated that wetland drainage may reduce fungal community richness in 5–10 cm soils. Ascomycota, Sordariomycetes, and Cephalothecaceae were the dominant fungal phylum, class, and family, respectively, in 0–5 and 5–10 cm soils of both FW and DFW, representing as high as 76.17, 58.22, and 45.21% of the fungal community in 5–10 FW soils, respectively. Saprotrophic fungi predominated in both FW and DFW. Drainage altered both the fungal community structure and some edaphic factors. Mantel tests and Spearman correlation analyses implied that edaphic factors [i.e., soil organic matter (SOM), electronic conductivity (EC), pH, and clay] also affected soil fungal community structure. Overall, wetland drainage altered the community structure of the fungal community in the freshwater wetlands.
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Wei YL, Long ZJ, Ren MX. Microbial community and functional prediction during the processing of salt production in a 1000-year-old marine solar saltern of South China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 819:152014. [PMID: 34852250 DOI: 10.1016/j.scitotenv.2021.152014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/15/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
In Hainan Island, South China, a 1000-year-old marine saltern has been identified as an intangible cultural heritage due to its historical complicated salt-making techniques, whereas the knowledge about this saltern is extremely limited. Herein, DNA sequencing and biochemical technologies were applied to determine bacterial and fungal communities of this saltern and their possible functions during four stages of salt-making, i.e. seawater storage, mud solarization, brine concentrating, and solar crystallization. The results showed that both of bacterial and fungal communities were suffered from significant changes during processing of salt-making in Danzhou Ancient Saltern, whereas the richness and diversity of bacterial community dominated by Proteobacteria, Bacteroidota and Cyanobacteria was considerably greater than that of fungal community dominated by Ascomycota, Basidiomycota and Mortierellomycota. Additionally, the succession of bacterial community was closely associated with both of salt physicochemical properties (Na+, Cl-, total phosphorus, total nitrogen, Ca2+ and Mg2+) and bacteria themselves, whereas fungal community was more closely associated with physicochemical properties than fungi themselves. Importantly, Cyanobium_PCC-6307, Synechococcus_CC9902, Marinobacter, Prevotella and Halomonas as dominant bacterial genera respectively related to the metabolisms of amino acid, carbohydrate, terpenoids/polyketides, lipid and nucleotide were correlated with salt flavors. Saprophytic and saprotroph-symbiotroph fungi dominated by Aspergillus, Mortierella, Amanita, Neocucurbitaria and Tausonia also played core roles in the formation of salt flavors including umami and sweet smells. These findings revealed the highly specified microbiome community in this 1000-year-old saltern that mainly selected by brine solarization on basalt platforms, which is helpful to explore the underlying mechanisms of traditional salt-making techniques and to explore the useful microbes for nowadays food, medicine and chemical industries.
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Affiliation(s)
- Ya-Li Wei
- Ministry of Education Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, PR China; Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, PR China
| | - Zi-Jie Long
- Ministry of Education Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, PR China; Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, PR China
| | - Ming-Xun Ren
- Ministry of Education Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, PR China; Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, PR China.
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9
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Wang M, Zhang L, He Y, Huang L, Liu L, Chen D, Shan A, Feng Y, Yang X. Soil fungal communities affect the chemical quality of flue-cured tobacco leaves in Bijie, Southwest China. Sci Rep 2022; 12:2815. [PMID: 35181683 PMCID: PMC8857190 DOI: 10.1038/s41598-022-06593-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 01/31/2022] [Indexed: 12/26/2022] Open
Abstract
Soil microorganisms could affect the quality of tobacco leaves, however, little is known about the association of tobacco chemical components and soil fungal communities. In the present study, the relationship between soil fungi and tobacco quality based on chemical components in Bijie was investigated. The results showed that the total harmony scores (THS) of the analyzed tobacco leaves ranged from 46.55 ± 3.5 to 91.55 ± 2.25. Analyses of chemical components revealed that high contents of nicotine (≥ 1.06%) and sugar (total sugar: ≥ 22.96%, reducing sugar: ≥ 19.62%), as well as low potassium level (≤ 2.68%) were the main factors limiting the quality of flue-cured tobacco leaves. Pearson correlation analysis indicated that soil nitrate, available potassium/phosphorous, and organic matter significantly correlated with tobacco nicotine, potassium, and chloride levels (p < 0.05). Besides, the analysis of alpha- and beta-diversity of soil fungal communities implied that fungal structure rather than the richness affected the chemical quality of tobacco. In detail, the relative abundance of Humicola olivacea species in soils was positively correlated with the THS of tobaccos (r = 0.52, p < 0.05). Moreover, the species including Mortierella alpina, Mortierella hyalina, Tausonia pullulan, and Humicola olivacea were negatively correlated with tobacco sugar (r ≤ - 0.45, p < 0.05) while, Codinaea acaciae and Saitozyma podzolica species were negatively correlated with tobacco nicotine (r ≤ - 0.51, p < 0.05). The present study provides a preliminary basis for utilizing fungal species in soils to improve the chemical quality of tobacco in the studied area.
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Affiliation(s)
- Mei Wang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Long Zhang
- Bijie Branch Company of Guizhou Tobacco Company, Guizhou, 551713, China
| | - Yi He
- Bijie Branch Company of Guizhou Tobacco Company, Guizhou, 551713, China
| | - Lukuan Huang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lei Liu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Dan Chen
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Anqi Shan
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ying Feng
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
| | - Xiaoe Yang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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10
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Yao Y, Zhao Y, Yao X, Bai Y, An L, Li X, Wu K. Impacts of Continuous Cropping on Fungal Communities in the Rhizosphere Soil of Tibetan Barley. Front Microbiol 2022; 13:755720. [PMID: 35185842 PMCID: PMC8854972 DOI: 10.3389/fmicb.2022.755720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 01/13/2022] [Indexed: 11/20/2022] Open
Abstract
Microbial community structures and keystone species play critical roles in soil ecological processes; however, their responses to the continuous cropping of plants are virtually unknown. Here, we investigated the community dynamics and keystone species of fungal communities in the rhizosphere soils of continuously cropped Tibetan barley (a principal cereal cultivated on the Qinghai–Tibetan Plateau). We found that the Chao1 and Phylogenetic Diversity (PD) indices decreased with increased cropping years. The relative abundance of the genera Cystofilobasidium, Mucor, and Ustilago increased with the extension of continuous cropping years, whereas Fusarium showed the opposite pattern. Furthermore, long-term monocropped Tibetan barley simplified the complexity of the co-occurrence networks. Keystone operational taxonomic units (OTUs) changed with continuous cropping, and most of the keystone OTUs belonged to the phylum Ascomycota, suggesting their important roles in rhizosphere soil. Overall, this study revealed that the continuous cropping of Tibetan barley impacted both on the richness, phylogenetic diversity, and co-occurrence network of fungal community in the rhizosphere. These findings enhance our understanding of how rhizosphere fungal communities respond to monocropped Tibetan barley.
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Affiliation(s)
- Youhua Yao
- Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, Xining, China
- Qinghai Subcenter of National Hulless Barley Improvement, Xining, China
| | - Yuan Zhao
- College of Eco-Environmental Engineering, Qinghai University, Xining, China
| | - Xiaohua Yao
- Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, Xining, China
- Qinghai Subcenter of National Hulless Barley Improvement, Xining, China
| | - Yixiong Bai
- Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, Xining, China
- Qinghai Subcenter of National Hulless Barley Improvement, Xining, China
| | - Likun An
- Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, Xining, China
- Qinghai Subcenter of National Hulless Barley Improvement, Xining, China
| | - Xin Li
- Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, Xining, China
- Qinghai Subcenter of National Hulless Barley Improvement, Xining, China
| | - Kunlun Wu
- Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, Xining, China
- Qinghai Subcenter of National Hulless Barley Improvement, Xining, China
- *Correspondence: Kunlun Wu,
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11
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Tan G, Liu Y, Peng S, Yin H, Meng D, Tao J, Gu Y, Li J, Yang S, Xiao N, Liu D, Xiang X, Zhou Z. Soil potentials to resist continuous cropping obstacle: Three field cases. ENVIRONMENTAL RESEARCH 2021; 200:111319. [PMID: 34052246 DOI: 10.1016/j.envres.2021.111319] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 04/09/2021] [Accepted: 05/09/2021] [Indexed: 05/13/2023]
Abstract
Continuous cropping has become the most common system in intensive, modern agricultural production; however, obstacles often appear in continuous cropping patterns after a few years of use. There have been several studies about the impacts of continuous cropping on soil microbial, but few about differences between soil experiencing continuous cropping obstacles and those where such obstacles had been resisted. Here, after ten or twenty years of continuous tobacco cropping, we collected soil samples investigating discrepancies in soil property and bacterial community between soils experiencing continuous cropping obstacles and soils where the obstacles were resisted providing insight into preventing and controlling continuous cropping obstacles. Results showed that soil organic matter (SOM), available phosphorus (AP), total nitrogen (TN), nitrate-N (NO3--N), and bacterial diversity of samples where continuous cropping obstacles had been resisted were significantly higher than those where continuous cropping obstacles were present. Besides, SOM, AP, TN, and Ammonium-N (NH4+-N) considerably affected the bacterial community. Among all variables, NH4+-N explained the largest proportion of bacterial community variation. Molecular ecological networks were used to putatively identify keystone taxa, including Acidobacteria Gp1, Acidobacteria Gp2, Acidobacteria Gp16, and WPS-1_genera_incertae_sedis. Their relative abundance significantly changed between the two conditions. Overall, our results indicate that decreases in soil nutrient content and bacterial diversity, and significant changes in some keystone taxa abundances may be important factors leading to increased soil-borne diseases and reduced tobacco production potential or quality. Thus, during agricultural production, we could regulate the stability of the soil-crop-microbial ecological system via crop rotation, intercropping, or the use of specialized bio-fertilizers and soil conditioners to mitigate continuous cropping obstacles.
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Affiliation(s)
- Ge Tan
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Yongjun Liu
- Tobacco Research Institute of Hunan Province, Changsha, 410004, China; College of Agronomy, Hunan Agricultural University, Changsha, 410128, China.
| | - Shuguang Peng
- Tobacco Research Institute of Hunan Province, Changsha, 410004, China
| | - Huaqun Yin
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Delong Meng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Jiemeng Tao
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Yabing Gu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Juan Li
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
| | - Sheng Yang
- School of Energy Science and Engineering, Central South University, Changsha, 410083, China
| | - Nengwen Xiao
- The Institute of Ecology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Dongmei Liu
- The Institute of Ecology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Xiaowu Xiang
- Agricultural Bureau of Dongkou County, Hunan Province, Shaoyang, 422300, China
| | - Zhicheng Zhou
- Tobacco Research Institute of Hunan Province, Changsha, 410004, China.
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12
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Yan L, Zhang W, Duan W, Zhang Y, Zheng W, Lai X. Temporal Bacterial Community Diversity in the Nicotiana tabacum Rhizosphere Over Years of Continuous Monocropping. Front Microbiol 2021; 12:641643. [PMID: 34113322 PMCID: PMC8186668 DOI: 10.3389/fmicb.2021.641643] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 04/28/2021] [Indexed: 01/19/2023] Open
Abstract
Long-term continuous monocropping negatively influences the physicochemical and biological characteristics of cultivated soil, especially for the economically important crop of flue-cured tobacco that is intolerant to continuous monocropping. The underlying mechanism of soil sickness under continuous monoculture and the temporal dynamic changes over the tobacco life cycle among different monoculture time spans remain poorly characterized. In this study, high-throughput sequencing targeting the 16S rRNA gene phylogenetic marker was performed on 60 soil samples of rhizosphere soil from flue−cured tobacco in the replanting, growth and harvest period across 5, 10, and 20 years of a continuous monocropping system. Bacterial community diversity decreased with the increase in duration of continuous monocropping, and the rhizosphere microbiota was highly dynamic in the harvest period. The random forests algorithm identified 17 taxa as biomarkers and a model was established to correlate root microbiota with continuous monocropping time of flue-cured tobacco. Molecular ecological network analysis elaborated the differences and interactions in bacterial co-occurrence patterns under different monocropping systems. The co-occurrence microbial network was larger in size but there were fewer interactions among microbial communities with the increase in continuous monocropping duration. These results provide insights into the changes of flue−cured tobacco root microbiome diversity in response to continuous monocropping and suggest a model for successional dynamics of the root-associated microbiota over continuous monocropping time and development stage. This study may help elucidate the theoretical basis underlying obstacles to continuous monocropping and could contribute to improving guidance for tobacco production.
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Affiliation(s)
- Lang Yan
- Panxi Crops Research and Utilization Key Laboratory of Sichuan Province, College of Agriculture Science, Xichang University, Xichang, China
| | - Wenyou Zhang
- Panxi Crops Research and Utilization Key Laboratory of Sichuan Province, College of Agriculture Science, Xichang University, Xichang, China
| | - Wangjun Duan
- China Tobacco Sichuan Industrial Co., Ltd., Chengdu, China
| | - Yizheng Zhang
- Sichuan Key Laboratory of Molecular Biology and Biotechnology, College of Life Sciences, Sichuan University, Chengdu, China
| | - Wen Zheng
- Panxi Crops Research and Utilization Key Laboratory of Sichuan Province, College of Agriculture Science, Xichang University, Xichang, China
| | - Xianjun Lai
- Panxi Crops Research and Utilization Key Laboratory of Sichuan Province, College of Agriculture Science, Xichang University, Xichang, China
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