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Wang L, Chai Y, Wu J, Yu X, Sun J, Feng Z, Chen F, He L. Phylogenetic relatedness and habitat affect seedling abundance of a mid-montane humid evergreen broad-leaved forest in the Gaoligong Mountains, Southwestern China. Sci Rep 2024; 14:21019. [PMID: 39251815 DOI: 10.1038/s41598-024-72374-3] [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: 07/22/2024] [Accepted: 09/06/2024] [Indexed: 09/11/2024] Open
Abstract
The neighborhood effect has become an important framework with which to study the mechanisms that maintain the coexistence of tree species. Phylogenetic relatedness among neighboring plants directly affects species coexistence and the maintenance of tree diversity. And some studies have reported that seedling performance is negatively correlated with phylogenetic relatedness, which termed phylogenetic negative density dependence. Soil-borne fungal pathogens affected seedling performance of phylogenetically related host species, i.e., phylogenetic Janzen-Connell effect. Seedlings may be particularly vulnerable to habitat and neighbor characteristics. Although previous studies have demonstrated the influence of neighborhood effects, phylogenetic relatedness, and habitat filtering on seedling survival, growth, and mortality, the effect of variation in these factors on seedling abundance remains unclear. To address this question, we used a 4-ha (200 m × 200 m) and monitored four-year (2020-2023) seedling dataset from a mid-montane humid evergreen broad-leaved subtropical forest in the Gaoligong Mountains, Yunnan, Southwestern China, and which consisted of 916 seedlings belonging to 56 species. The results of generalized linear mixed models showed no significant effect of conspecific adult neighbors on seedling abundance at any of the intervals evaluated. In contrast, we found evidence of phylogenetic distance density dependence in the forests of the Gaoligong Mountains. Specifically, there was a significant positive effect of the relative average phylogenetic distance between heterospecific adult neighbors and focal seedlings on focal seedling abundance in 2020; however, the relative average phylogenetic distance between heterospecific seedling neighbors and focal seedlings had a significant negative effect on seedling abundance over the four-year period (2020-2023). Among the habitat factors, only light (canopy opening) had a negative effect on seedling abundance in all four years. Light resources may be a limiting factor for seedlings, and determine seedling dynamics in subtropical forests. Overall, our results demonstrated that phylogenetic density dependence and habitat filtering affected subtropical seedling abundance. Our findings provide new evidence of the impact of phylogenetic density dependence on seedling abundance in a subtropical mid-montane humid evergreen broad-leaved forest and highlight the need to incorporate the neighborhood effect, phylogenetic relatedness, and habitat factors in models assessing seedling abundance.
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Affiliation(s)
- Liping Wang
- College of Agriculture and Biological Science, Dali University, Dali, Yunnan, China
| | - Yong Chai
- Yunnan Academy of Forestry and Grassland, Kunming, China
- Yunnan Key Laboratory of Biodiversity of Gaoligong Mountain, Kunming, China
- Gaoligong Mountain Forest Ecosystem Observation and Research Station of Yunnan Province, Kunming, China
| | - Junjie Wu
- College of Agriculture and Biological Science, Dali University, Dali, Yunnan, China.
| | - Xiaoli Yu
- College of Agriculture and Biological Science, Dali University, Dali, Yunnan, China
| | - Jiwen Sun
- College of Agriculture and Biological Science, Dali University, Dali, Yunnan, China
| | - Zhe Feng
- College of Agriculture and Biological Science, Dali University, Dali, Yunnan, China
| | - Fengxian Chen
- College of Agriculture and Biological Science, Dali University, Dali, Yunnan, China
| | - Liping He
- Yunnan Academy of Forestry and Grassland, Kunming, China
- Yunnan Key Laboratory of Biodiversity of Gaoligong Mountain, Kunming, China
- Gaoligong Mountain Forest Ecosystem Observation and Research Station of Yunnan Province, Kunming, China
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Dang P, Zhang M, Chen X, Loreau M, Duffy JE, Li X, Wen S, Han X, Liao L, Huang T, Wan C, Qin X, Siddique KHM, Schmid B. Plant diversity decreases greenhouse gas emissions by increasing soil and plant carbon storage in terrestrial ecosystems. Ecol Lett 2024; 27:e14469. [PMID: 38990962 DOI: 10.1111/ele.14469] [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: 01/02/2024] [Accepted: 06/11/2024] [Indexed: 07/13/2024]
Abstract
The decline in global plant diversity has raised concerns about its implications for carbon fixation and global greenhouse gas emissions (GGE), including carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). Therefore, we conducted a comprehensive meta-analysis of 2103 paired observations, examining GGE, soil organic carbon (SOC) and plant carbon in plant mixtures and monocultures. Our findings indicate that plant mixtures decrease soil N2O emissions by 21.4% compared to monocultures. No significant differences occurred between mixtures and monocultures for soil CO2 emissions, CH4 emissions or CH4 uptake. Plant mixtures exhibit higher SOC and plant carbon storage than monocultures. After 10 years of vegetation development, a 40% reduction in species richness decreases SOC content and plant carbon storage by 12.3% and 58.7% respectively. These findings offer insights into the intricate connections between plant diversity, soil and plant carbon storage and GGE-a critical but previously unexamined aspect of biodiversity-ecosystem functioning.
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Affiliation(s)
- Pengfei Dang
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Miaomiao Zhang
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Xinli Chen
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Michel Loreau
- Theoretical and Experimental Ecology Station, CNRS, Moulis, France
- Institute of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - J Emmett Duffy
- Tennenbaum Marine Observatory Network and MarineGEO Program, Smithsonian Environmental Research Center, Edgewater, Maryland, USA
| | - Xin'e Li
- Division of Grassland Science, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Shuyue Wen
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiaoqing Han
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Lechen Liao
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Tiantian Huang
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Chenxi Wan
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiaoliang Qin
- College of Agronomy/State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A&F University, Yangling, Shaanxi, China
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture, The University of Western Australia, Perth, Western Australia, Australia
| | - Bernhard Schmid
- Institute of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, China
- Remote Sensing Laboratories, Department of Geography, University of Zurich, Zurich, Switzerland
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Lepinay C, Větrovský T, Chytrý M, Dřevojan P, Fajmon K, Cajthaml T, Kohout P, Baldrian P. Effect of plant communities on bacterial and fungal communities in a Central European grassland. ENVIRONMENTAL MICROBIOME 2024; 19:42. [PMID: 38902816 PMCID: PMC11188233 DOI: 10.1186/s40793-024-00583-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 06/07/2024] [Indexed: 06/22/2024]
Abstract
BACKGROUND Grasslands provide fundamental ecosystem services that are supported by their plant diversity. However, the importance of plant taxonomic diversity for the diversity of other taxa in grasslands remains poorly understood. Here, we studied the associations between plant communities, soil chemistry and soil microbiome in a wooded meadow of Čertoryje (White Carpathians, Czech Republic), a European hotspot of plant species diversity. RESULTS High plant diversity was associated with treeless grassland areas with high primary productivity and high contents of soil nitrogen and organic carbon. In contrast, low plant diversity occurred in grasslands near solitary trees and forest edges. Fungal communities differed between low-diversity and high-diversity grasslands more strongly than bacterial communities, while the difference in arbuscular mycorrhizal fungi (AMF) depended on their location in soil versus plant roots. Compared to grasslands with low plant diversity, high-diversity plant communities had a higher diversity of fungi including soil AMF, a different fungal and soil AMF community composition and higher bacterial and soil AMF biomass. Root AMF composition differed only slightly between grasslands with low and high plant diversity. Trees dominated the belowground plant community in low-diversity grasslands, which influenced microbial diversity and composition. CONCLUSIONS The determinants of microbiome abundance and composition in grasslands are complex. Soil chemistry mainly influenced bacterial communities, while plant community type mainly affected fungal (including AMF) communities. Further studies on the functional roles of microbial communities are needed to understand plant-soil-microbe interactions and their involvement in grassland ecosystem services.
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Affiliation(s)
- Clémentine Lepinay
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic.
| | - Tomáš Větrovský
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - Milan Chytrý
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 61137, Brno, Czech Republic
| | - Pavel Dřevojan
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 61137, Brno, Czech Republic
| | - Karel Fajmon
- Regional Office Protected Landscape Area Bílé Karpaty, Nature Conservation Agency of the Czech Republic, Nádražní 318, 763 26, Luhačovice, Czech Republic
| | - Tomáš Cajthaml
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - Petr Kohout
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - Petr Baldrian
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
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Zang Z, Li Y, Wang Y, Zhang Y, Deng S, Guo X, Yang K, Zhao W. Contrasting roles of plant, bacterial, and fungal diversity in soil organic carbon accrual during ecosystem restoration: A meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172767. [PMID: 38670358 DOI: 10.1016/j.scitotenv.2024.172767] [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: 02/03/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Plant and microbial diversity plays vital roles in soil organic carbon (SOC) accumulation during ecosystem restoration. However, how soil microbial diversity mediates the positive effects of plant diversity on carbon accumulation during vegetation restoration remains unclear. We conducted a large-scale meta-analysis with 353 paired observations from 65 studies to examine how plant and microbial diversity changed over 0-160 years of natural restoration and its connection to SOC accrual in the topsoil (0-10 cm). Results showed that natural restoration significantly increased plant aboveground biomass (122.09 %), belowground biomass (153.05 %), and richness (21.99 %) and SOC accumulation (32.34 %) but had no significant impact on microbial diversity. Over time, bacterial and fungal richness increased and then decreased. The responses of major microbial phyla, in terms of relative abundance, varied across restoration and ecosystem types. Specifically, Ascomycota and Zygomycota decreased more under farmland abandonment than under grazing exclusion. In forest, Bacteroidetes, Ascomycota, and Zygomycota significantly decreased after natural restoration. The increase in SOC and Basidiomycota was higher in forest than in grassland. Based on standardized estimates, structural equation modeling showed that plant diversity had the highest positive effect (0.55) on SOC accrual, and while fungal diversity (0.15) also had a positive effective, bacterial diversity (-0.20) had a negative effect. Plant diversity promoted SOC accumulation by directly impacting biomass and soil moisture and total nitrogen and indirectly influencing soil microbial richness. This meta-analysis highlights the significant roles of plant diversity and microbial diversity in carbon accumulation during natural restoration and elucidates their relative contributions to carbon accumulation, thereby aiding in more precise predictions of soil carbon sequestration.
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Affiliation(s)
- Zhenfeng Zang
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yingxue Li
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; Comprehensive Security Center of Hohhot Forestry and Grassland Bureau, Hohhot, Inner Mongolia 010010, China
| | - Yinan Wang
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yu Zhang
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shujuan Deng
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinyu Guo
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ke Yang
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
| | - Wei Zhao
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China.
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5
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Strauss AT, Hobbie SE, Reich PB, Seabloom EW, Borer ET. The effect of diversity on disease reverses from dilution to amplification in a 22-year biodiversity × N × CO 2 experiment. Sci Rep 2024; 14:10938. [PMID: 38740878 DOI: 10.1038/s41598-024-60725-z] [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: 06/22/2023] [Accepted: 04/26/2024] [Indexed: 05/16/2024] Open
Abstract
Plant disease often increases with N, decreases with CO2, and increases as biodiversity is lost (i.e., the dilution effect). Additionally, all these factors can indirectly alter disease by changing host biomass and hence density-dependent disease transmission. Yet over long periods of time as communities undergo compositional changes, these biomass-mediated pathways might fade, intensify, or even reverse in direction. Using a field experiment that has manipulated N, CO2, and species richness for over 20 years, we compared severity of a specialist rust fungus (Puccinia andropogonis) on its grass host (Andropogon gerardii) shortly after the experiment began (1999) and twenty years later (2019). Between these two sampling periods, two decades apart, we found that disease severity consistently increased with N and decreased with CO2. However, the relationship between diversity and disease reversed from a dilution effect in 1999 (more severe disease in monocultures) to an amplification effect in 2019 (more severe disease in mixtures). The best explanation for this reversal centered on host density (i.e., aboveground biomass), which was initially highest in monoculture, but became highest in mixtures two decades later. Thus, the diversity-disease pattern reversed, but disease consistently increased with host biomass. These results highlight the consistency of N and CO2 as drivers of plant disease in the Anthropocene and emphasize the critical role of host biomass-despite potentially variable effects of diversity-for relationships between biodiversity and disease.
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Affiliation(s)
- Alexander T Strauss
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, USA.
- Odum School of Ecology, University of Georgia, Athens, GA, USA.
- Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA.
| | - Sarah E Hobbie
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, USA
| | - Peter B Reich
- Department of Forest Resources, University of Minnesota, St. Paul, MN, USA
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
- Institute for Global Change Biology and School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA
| | - Eric W Seabloom
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, USA
| | - Elizabeth T Borer
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, USA
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Qiao M, Sun R, Wang Z, Dumack K, Xie X, Dai C, Wang E, Zhou J, Sun B, Peng X, Bonkowski M, Chen Y. Legume rhizodeposition promotes nitrogen fixation by soil microbiota under crop diversification. Nat Commun 2024; 15:2924. [PMID: 38575565 PMCID: PMC10995168 DOI: 10.1038/s41467-024-47159-x] [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: 04/06/2023] [Accepted: 03/22/2024] [Indexed: 04/06/2024] Open
Abstract
Biological nitrogen fixation by free-living bacteria and rhizobial symbiosis with legumes plays a key role in sustainable crop production. Here, we study how different crop combinations influence the interaction between peanut plants and their rhizosphere microbiota via metabolite deposition and functional responses of free-living and symbiotic nitrogen-fixing bacteria. Based on a long-term (8 year) diversified cropping field experiment, we find that peanut co-cultured with maize and oilseed rape lead to specific changes in peanut rhizosphere metabolite profiles and bacterial functions and nodulation. Flavonoids and coumarins accumulate due to the activation of phenylpropanoid biosynthesis pathways in peanuts. These changes enhance the growth and nitrogen fixation activity of free-living bacterial isolates, and root nodulation by symbiotic Bradyrhizobium isolates. Peanut plant root metabolites interact with Bradyrhizobium isolates contributing to initiate nodulation. Our findings demonstrate that tailored intercropping could be used to improve soil nitrogen availability through changes in the rhizosphere microbiome and its functions.
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Affiliation(s)
- Mengjie Qiao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruibo Sun
- Anhui Province Key Lab of Farmland Ecological Conservation and Nutrient Utilization, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Zixuan Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
- College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Kenneth Dumack
- Terrestrial Ecology, Institute of Zoology, University of Cologne, Zülpicher Str 47b, Cologne, 50674, Germany
| | - Xingguang Xie
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Chuanchao Dai
- College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Ertao Wang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jizhong Zhou
- Institute for Environmental Genomics and Department of Microbiology and Plant Biology, University of Oklahoma, Norman, 73019, USA
| | - Bo Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Xinhua Peng
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Michael Bonkowski
- Terrestrial Ecology, Institute of Zoology, University of Cologne, Zülpicher Str 47b, Cologne, 50674, Germany
- Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, 50674, Germany
| | - Yan Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
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Yang J, Ding D, Zhang X, Gu H. A comparative analysis of soil physicochemical properties and microbial community structure among four shelterbelt species in the northeast China plain. Microbiol Spectr 2024; 12:e0368323. [PMID: 38376351 PMCID: PMC10986494 DOI: 10.1128/spectrum.03683-23] [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: 10/18/2023] [Accepted: 01/23/2024] [Indexed: 02/21/2024] Open
Abstract
Conducting studies that focus on the alterations occurring in the soil microbiome within protection forests in the northeast plain is of utmost importance in evaluating the ecological rehabilitation of agricultural lands in the Mollisols region. Nevertheless, the presence of geographic factors contributes to substantial disparities in the microbiomes, and thus, addressing this aspect of influence becomes pivotal in ensuring the credibility of the collected data. Consequently, the objective is to compare the variations in soil physicochemical properties and microbial community structure within the understory of diverse shelterbelt species. In this study, we analyzed the understory soils of Juglans mandshurica (Jm), Fraxinus mandschurica (Fm), Acer mono (Am), and Betula platyphylla (Bp) from the same locality. We employed high-throughput sequencing technology and soil physicochemical data to investigate the impact of these different tree species on soil microbial communities, chemical properties, and enzyme activities in Mollisols areas. Significant variations in soil nutrients and enzyme activities were observed among tree species, with soil organic matter content ranging from 49.1 to 67.7 g/kg and cellulase content ranging from 5.3 to 524.0 μg/d/g. The impact of tree species on microbial diversities was found to be more pronounced in the bacterial community (Adnoism: R = 0.605) compared to the fungal community (Adnoism: R = 0.433). The linear discriminant analysis effect size (LEfSe) analysis revealed a total of 5 (Jm), 3 (Bp), and 6 (Am) bacterial biomarkers, as well as 2 (Jm), 6 (Fm), 4 (Bp), and 1 (Am) fungal biomarker at the genus level (LDA3). The presence of various tree species was observed to significantly alter the relative abundance of specific microbial community structures, specifically in Gammaproteobacteria, Ascomycota, and Basidiomycota. Furthermore, environmental factors, such as pH, total potassium, and available phosphorus were important factors influencing changes in bacterial communities. We propose that Fm be utilized as the primary tree species for establishing farmland protection forests in the northeastern region, owing to its superior impact on enhancing soil quality. IMPORTANCE The focal point of this study lies in the implementation of a controlled experiment conducted under field conditions. In this experiment, we deliberately selected four shelterbelts within the same field, characterized by identical planting density, and planting year. This deliberate selection effectively mitigated the potential impact of extraneous factors on the three microbiomes, thereby enhancing the reliability and validity of our findings.
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Affiliation(s)
- Jia Yang
- School of Forestry, Northeast Forestry University, Harbin, China
| | - Dang Ding
- School of Forestry, Northeast Forestry University, Harbin, China
| | - Xiuru Zhang
- School of Forestry, Northeast Forestry University, Harbin, China
| | - Huiyan Gu
- School of Forestry, Northeast Forestry University, Harbin, China
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8
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Duan Y, Wang T, Zhang P, Zhao X, Jiang J, Ma Y, Zhu X, Fang W. The effect of intercropping leguminous green manure on theanine accumulation in the tea plant: A metagenomic analysis. PLANT, CELL & ENVIRONMENT 2024; 47:1141-1159. [PMID: 38098148 DOI: 10.1111/pce.14784] [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: 07/11/2023] [Revised: 11/15/2023] [Accepted: 12/06/2023] [Indexed: 03/05/2024]
Abstract
Intercropping is a widely recognised technique that contributes to agricultural sustainability. While intercropping leguminous green manure offers advantages for soil health and tea plants growth, the impact on the accumulation of theanine and soil nitrogen cycle are largely unknown. The levels of theanine, epigallocatechin gallate and soluble sugar in tea leaves increased by 52.87% and 40.98%, 22.80% and 6.17%, 22.22% and 29.04% in intercropping with soybean-Chinese milk vetch rotation and soybean alone, respectively. Additionally, intercropping significantly increased soil amino acidnitrogen content, enhanced extracellular enzyme activities, particularly β-glucosidase and N-acetyl-glucosaminidase, as well as soil multifunctionality. Metagenomics analysis revealed that intercropping positively influenced the relative abundances of several potentially beneficial microorganisms, including Burkholderia, Mycolicibacterium and Paraburkholderia. Intercropping resulted in lower expression levels of nitrification genes, reducing soil mineral nitrogen loss and N2 O emissions. The expression of nrfA/H significantly increased in intercropping with soybean-Chinese milk vetch rotation. Structural equation model analysis demonstrated that the accumulation of theanine in tea leaves was directly influenced by the number of intercropping leguminous green manure species, soil ammonium nitrogen and amino acid nitrogen. In summary, the intercropping strategy, particularly intercropping with soybean-Chinese milk vetch rotation, could be a novel way for theanine accumulation.
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Affiliation(s)
- Yu Duan
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Ting Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Peixi Zhang
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Xinjie Zhao
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Jie Jiang
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Yuanchun Ma
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Xujun Zhu
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Wanping Fang
- College of Horticulture, Nanjing Agricultural University, Nanjing, China
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9
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Zhang X, Yu M, Su J, Xu J, Zhang X, Shang J, Gao J. Leaf nutrient traits of planted forests demonstrate a heightened sensitivity to environmental changes compared to natural forests. FRONTIERS IN PLANT SCIENCE 2024; 15:1372530. [PMID: 38562565 PMCID: PMC10982418 DOI: 10.3389/fpls.2024.1372530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 03/04/2024] [Indexed: 04/04/2024]
Abstract
Leaf nutrient content (nitrogen, phosphorus) and their stoichiometric ratio (N/P) as key functional traits can reflect plant survival strategies and predict ecosystem productivity responses to environmental changes. Previous research on leaf nutrient traits has primarily focused on the species level with limited spatial scale, making it challenging to quantify the variability and influencing factors of forest leaf nutrient traits on a macro scale. This study, based on field surveys and literature collected from 2005 to 2020 on 384 planted forests and 541 natural forests in China, investigates the differences in leaf nutrient traits between forest types (planted forests, natural forests) and their driving factors. Results show that leaf nutrient traits (leaf nitrogen content (LN), leaf phosphorus content (LP), and leaf N/P ratio) of planted forests are significantly higher than those of natural forests (P< 0.05). The impact of climatic and soil factors on the variability of leaf nutrient traits in planted forests is greater than that in natural forests. With increasing forest age, natural forests significantly increase in leaf nitrogen and phosphorus content, with a significant decrease in N/P ratio (P< 0.05). Climatic factors are key environmental factors dominating the spatial variability of leaf nutrient traits. They not only directly affect leaf nutrient traits of planted and natural forest communities but also indirectly through regulation of soil nutrients and stand factors, with their direct effects being more significant than their indirect effects.
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Affiliation(s)
- Xing Zhang
- Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Mengyao Yu
- Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Jianxiao Su
- Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Jiali Xu
- Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Xueting Zhang
- Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Jinlong Shang
- Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Jie Gao
- Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi, China
- Key Laboratory of Earth Surface Processes of Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China
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10
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Zheng L, Barry KE, Guerrero-Ramírez NR, Craven D, Reich PB, Verheyen K, Scherer-Lorenzen M, Eisenhauer N, Barsoum N, Bauhus J, Bruelheide H, Cavender-Bares J, Dolezal J, Auge H, Fagundes MV, Ferlian O, Fiedler S, Forrester DI, Ganade G, Gebauer T, Haase J, Hajek P, Hector A, Hérault B, Hölscher D, Hulvey KB, Irawan B, Jactel H, Koricheva J, Kreft H, Lanta V, Leps J, Mereu S, Messier C, Montagnini F, Mörsdorf M, Müller S, Muys B, Nock CA, Paquette A, Parker WC, Parker JD, Parrotta JA, Paterno GB, Perring MP, Piotto D, Wayne Polley H, Ponette Q, Potvin C, Quosh J, Rewald B, Godbold DL, van Ruijven J, Standish RJ, Stefanski A, Sundawati L, Urgoiti J, Williams LJ, Wilsey BJ, Yang B, Zhang L, Zhao Z, Yang Y, Sandén H, Ebeling A, Schmid B, Fischer M, Kotowska MM, Palmborg C, Tilman D, Yan E, Hautier Y. Effects of plant diversity on productivity strengthen over time due to trait-dependent shifts in species overyielding. Nat Commun 2024; 15:2078. [PMID: 38453933 PMCID: PMC10920907 DOI: 10.1038/s41467-024-46355-z] [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: 11/08/2023] [Accepted: 02/23/2024] [Indexed: 03/09/2024] Open
Abstract
Plant diversity effects on community productivity often increase over time. Whether the strengthening of diversity effects is caused by temporal shifts in species-level overyielding (i.e., higher species-level productivity in diverse communities compared with monocultures) remains unclear. Here, using data from 65 grassland and forest biodiversity experiments, we show that the temporal strength of diversity effects at the community scale is underpinned by temporal changes in the species that yield. These temporal trends of species-level overyielding are shaped by plant ecological strategies, which can be quantitatively delimited by functional traits. In grasslands, the temporal strengthening of biodiversity effects on community productivity was associated with increasing biomass overyielding of resource-conservative species increasing over time, and with overyielding of species characterized by fast resource acquisition either decreasing or increasing. In forests, temporal trends in species overyielding differ when considering above- versus belowground resource acquisition strategies. Overyielding in stem growth decreased for species with high light capture capacity but increased for those with high soil resource acquisition capacity. Our results imply that a diversity of species with different, and potentially complementary, ecological strategies is beneficial for maintaining community productivity over time in both grassland and forest ecosystems.
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Affiliation(s)
- Liting Zheng
- Zhejiang Zhoushan Island Observation and Research Station, Zhejiang Tiantong National Forest Ecosystem Observation and Research Station, Shanghai Key Lab for Urban and Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China.
- Institute for Global Change Biology and School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA.
| | - Kathryn E Barry
- Ecology and Biodiversity Group, Department of Biology, Utrecht University, Utrecht, The Netherlands
| | - Nathaly R Guerrero-Ramírez
- Biodiversity, Macroecology and Biogeography, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Göttingen, Germany
- Silviculture and Forest Ecology of Temperate Zones, Faculty of Forest Sciences and Forest Ecology, University of Goettingen, Göttingen, Germany
- Centre of Biodiversity and Sustainable Land Use, University of Göttingen, Göttingen, Germany
| | - Dylan Craven
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Huechuraba, Santiago, Chile
- Data Observatory Foundation, ANID Technology Center No. DO210001, Providencia, Santiago, Chile
| | - Peter B Reich
- Institute for Global Change Biology and School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA
- Department of Forest Resources, University of Minnesota, Saint Paul, MN, USA
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Kris Verheyen
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | | | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Nadia Barsoum
- Centre for Ecosystems, Society and Biosecurity, Forest Research, Alice Holt Lodge, Farnham, UK
| | - Jürgen Bauhus
- Chair of Silviculture, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
| | - Helge Bruelheide
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle Wittenberg, Halle, Germany
| | | | - Jiri Dolezal
- Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- Department of Functional Ecology, Institute of Botany CAS, Třeboň, Czech Republic
| | - Harald Auge
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Department of Community Ecology, Helmholtz-Centre for Environmental Research-UFZ, Halle (Saale), Germany
| | - Marina V Fagundes
- Departamento de Ecología, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - Olga Ferlian
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Sebastian Fiedler
- Department of Ecosystem Modelling, Büsgen-Institute, University of Göttingen, Göttingen, Germany
| | | | - Gislene Ganade
- Departamento de Ecología, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - Tobias Gebauer
- Geobotany, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Bioenergy Systems Department, Resource Mobilisation, German Biomass Research Center-DBFZ gGmbH, Leipzig, Germany
| | - Josephine Haase
- Geobotany, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Department of Aquatic Ecology, Eawag-Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Peter Hajek
- Geobotany, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Andy Hector
- Department of Biology, University of Oxford, Oxford, UK
| | - Bruno Hérault
- CIRAD, Forêts et Sociétés, Montpellier, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, France
| | - Dirk Hölscher
- Centre of Biodiversity and Sustainable Land Use, University of Göttingen, Göttingen, Germany
- Tropical Silviculture and Forest Ecology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Göttingen, Germany
| | | | - Bambang Irawan
- Forestry Department, Faculty of Agriculture, University of Jambi, Jambi, Indonesia
- Land Use Transformation Systems Center of Excellence, University of Jambi, Jambi, Indonesia
| | - Hervé Jactel
- INRAE, University of Bordeaux, BIOGECO, Cestas, France
| | - Julia Koricheva
- Department of Biological Sciences, Royal Holloway University of London, Egham, UK
| | - Holger Kreft
- Biodiversity, Macroecology and Biogeography, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Göttingen, Germany
- Centre of Biodiversity and Sustainable Land Use, University of Göttingen, Göttingen, Germany
| | - Vojtech Lanta
- Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- Department of Functional Ecology, Institute of Botany CAS, Třeboň, Czech Republic
| | - Jan Leps
- Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- Biological Research Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Simone Mereu
- Consiglio Nazionale delle Ricerche, Istituto per la Bioeconomia, CNR-IBE, Sassari, Italy
- CMCC-Centro Euro-Mediterraneo sui Cambiamenti Climatici, IAFES Division, Sassari, Italy
- National Biodiversity Future Center (NBFC), Piazza Marina 61 (c/o palazzo Steri), Palermo, Italy
| | - Christian Messier
- Département des sciences biologiques, Centre for Forest Research, Université du Québec à Montréal, Montreal, QC, Canada
- Département des sciences naturelles, ISFORT, Université du Québec en Outaouais, Ripon, QC, Canada
| | - Florencia Montagnini
- School of Forestry and Environmental Studies, Yale University, New Haven, CT, USA
| | - Martin Mörsdorf
- Geobotany, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Department for Research, Biotope-, and Wildlife Management; National Park Administration Hunsrück-Hochwald, Birkenfeld, Germany
| | - Sandra Müller
- Geobotany, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Bart Muys
- Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
| | - Charles A Nock
- Geobotany, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Department of Renewable Resources, Faculty of Agriculture, Life and Environmental Sciences, University of Alberta, Edmonton, AB, Canada
| | - Alain Paquette
- Département des sciences biologiques, Centre for Forest Research, Université du Québec à Montréal, Montreal, QC, Canada
| | - William C Parker
- Ontario Ministry of Natural Resources and Forestry, Sault Ste. Marie, ON, Canada
| | - John D Parker
- Smithsonian Environmental Research Center, Edgewater, MD, USA
| | - John A Parrotta
- USDA Forest Service, Research & Development, Washington, DC, USA
| | - Gustavo B Paterno
- Biodiversity, Macroecology and Biogeography, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Göttingen, Germany
| | - Michael P Perring
- UKCEH (UK Centre for Ecology & Hydrology), Environment Centre Wales, Bangor, UK
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, Australia
| | - Daniel Piotto
- Centro de Formação em Ciências Agroflorestais, Universidade Federal do Sul da Bahia, Itabuna, Brazil
| | | | - Quentin Ponette
- Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | | | - Julius Quosh
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Boris Rewald
- Forest Ecology, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
- Forest Ecosystem Research, Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
| | - Douglas L Godbold
- Forest Ecology, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
- Forest Ecosystem Research, Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
| | - Jasper van Ruijven
- Plant Ecology and Nature Conservation Group, Wageningen University, Wageningen, The Netherlands
- Forest Ecology and Management group, Wageningen University, Wageningen, The Netherlands
| | - Rachel J Standish
- School of Environmental and Conservation Sciences, Murdoch University, Murdoch, WA, Australia
| | - Artur Stefanski
- Department of Forest Resources, University of Minnesota, Saint Paul, MN, USA
| | - Leti Sundawati
- Department of Forest Management, Faculty of Forestry and Environment, Institut Pertanian Bogor University, Bogor, Indonesia
| | - Jon Urgoiti
- Département des sciences biologiques, Centre for Forest Research, Université du Québec à Montréal, Montreal, QC, Canada
| | - Laura J Williams
- Department of Forest Resources, University of Minnesota, Saint Paul, MN, USA
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Brian J Wilsey
- Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA, USA
| | - Baiyu Yang
- Zhejiang Zhoushan Island Observation and Research Station, Zhejiang Tiantong National Forest Ecosystem Observation and Research Station, Shanghai Key Lab for Urban and Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Li Zhang
- Zhejiang Zhoushan Island Observation and Research Station, Zhejiang Tiantong National Forest Ecosystem Observation and Research Station, Shanghai Key Lab for Urban and Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Zhao Zhao
- Zhejiang Zhoushan Island Observation and Research Station, Zhejiang Tiantong National Forest Ecosystem Observation and Research Station, Shanghai Key Lab for Urban and Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Yongchuan Yang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China
| | - Hans Sandén
- Forest Ecology, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Anne Ebeling
- Institute of Ecology and Evolution, University Jena, Jena, Germany
| | - Bernhard Schmid
- Department of Geography, University of Zurich, Zurich, Switzerland
| | - Markus Fischer
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Martyna M Kotowska
- Department of Plant Ecology and Ecosystems Research, University of Göttingen, Göttingen, Germany
| | - Cecilia Palmborg
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - David Tilman
- Department of Ecology, Evolution and Behavior, University of Minnesota, Saint Paul, MN, USA
- Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, USA
| | - Enrong Yan
- Zhejiang Zhoushan Island Observation and Research Station, Zhejiang Tiantong National Forest Ecosystem Observation and Research Station, Shanghai Key Lab for Urban and Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China.
- Institute of Eco-Chongming (IEC), Shanghai, China.
| | - Yann Hautier
- Ecology and Biodiversity Group, Department of Biology, Utrecht University, Utrecht, The Netherlands
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11
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Stanley PL, Wilson C, Patterson E, Machmuller MB, Cotrufo MF. Ruminating on soil carbon: Applying current understanding to inform grazing management. GLOBAL CHANGE BIOLOGY 2024; 30:e17223. [PMID: 38454532 DOI: 10.1111/gcb.17223] [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: 12/10/2023] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 03/09/2024]
Abstract
Among options for atmospheric CO2 removal, sequestering soil organic carbon (SOC) via improved grazing management is a rare opportunity because it is scalable across millions of globally grazed acres, low cost, and has high technical potential. Decades of scientific research on grazing and SOC has failed to form a cohesive understanding of how grazing management affects SOC stocks and their distribution between particulate (POM) and mineral-associated organic matter (MAOM)-characterized by different formation and stabilization pathways-across different climatic contexts. As we increasingly look to grazing management for SOC sequestration on grazinglands to bolster our climate change mitigation efforts, we need a clear and collective understanding of grazing management's impact on pathways of SOC change to inform on-the-ground management decisions. We set out to review the effects of grazing management on SOC through a unified plant ecophysiology and soil biogeochemistry conceptual framework, where elements such as productivity, input quality, soil mineral capacity, and climate variables such as aridity co-govern SOC accumulation and distribution into POM and MAOM. To maximize applicability to grazingland managers, we discuss how common management levers that drive overall grazing pattern, including timing, intensity, duration, and frequency can be used to optimize mechanistic pathways of SOC sequestration. We discuss important research needs and measurement challenges, and highlight how our conceptual framework can inform more robust research with greater applicability for maximizing the use of grazing management to sequester SOC.
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Affiliation(s)
- Paige L Stanley
- Department of Soil and Crop Science, Colorado State University, Fort Collins, Colorado, USA
| | - Chris Wilson
- Agronomy Department, University of Florida, Gainesville, Florida, USA
| | - Erica Patterson
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado, USA
| | - Megan B Machmuller
- Department of Soil and Crop Science, Colorado State University, Fort Collins, Colorado, USA
| | - M Francesca Cotrufo
- Department of Soil and Crop Science, Colorado State University, Fort Collins, Colorado, USA
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12
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Wang G, Burrill HM, Podzikowski LY, Eppinga MB, Zhang F, Zhang J, Schultz PA, Bever JD. Dilution of specialist pathogens drives productivity benefits from diversity in plant mixtures. Nat Commun 2023; 14:8417. [PMID: 38110413 PMCID: PMC10728191 DOI: 10.1038/s41467-023-44253-4] [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: 03/07/2023] [Accepted: 12/05/2023] [Indexed: 12/20/2023] Open
Abstract
Productivity benefits from diversity can arise when compatible pathogen hosts are buffered by unrelated neighbors, diluting pathogen impacts. However, the generality of pathogen dilution has been controversial and rarely tested within biodiversity manipulations. Here, we test whether soil pathogen dilution generates diversity- productivity relationships using a field biodiversity-manipulation experiment, greenhouse assays, and feedback modeling. We find that the accumulation of specialist pathogens in monocultures decreases host plant yields and that pathogen dilution predicts plant productivity gains derived from diversity. Pathogen specialization predicts the strength of the negative feedback between plant species in greenhouse assays. These feedbacks significantly predict the overyielding measured in the field the following year. This relationship strengthens when accounting for the expected dilution of pathogens in mixtures. Using a feedback model, we corroborate that pathogen dilution drives overyielding. Combined empirical and theoretical evidence indicate that specialist pathogen dilution generates overyielding and suggests that the risk of losing productivity benefits from diversity may be highest where environmental change decouples plant-microbe interactions.
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Affiliation(s)
- Guangzhou Wang
- State Key Laboratory of Nutrient Use and Management (SKL-NUM), College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, 100193, Beijing, People's Republic of China.
- Kansas Biological Survey and Center for Ecological Research, University of Kansas, Lawrence, KS, 66045, USA.
| | - Haley M Burrill
- Kansas Biological Survey and Center for Ecological Research, University of Kansas, Lawrence, KS, 66045, USA
- Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS, 66045, USA
- The Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | - Laura Y Podzikowski
- Kansas Biological Survey and Center for Ecological Research, University of Kansas, Lawrence, KS, 66045, USA
- Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS, 66045, USA
| | - Maarten B Eppinga
- Department of Geography, University of Zurich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Fusuo Zhang
- State Key Laboratory of Nutrient Use and Management (SKL-NUM), College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Junling Zhang
- State Key Laboratory of Nutrient Use and Management (SKL-NUM), College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Peggy A Schultz
- Kansas Biological Survey and Center for Ecological Research, University of Kansas, Lawrence, KS, 66045, USA
- Environmental Studies Program, University of Kansas, Lawrence, KS, 66045, USA
| | - James D Bever
- Kansas Biological Survey and Center for Ecological Research, University of Kansas, Lawrence, KS, 66045, USA.
- Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS, 66045, USA.
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13
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Jansson JK, McClure R, Egbert RG. Soil microbiome engineering for sustainability in a changing environment. Nat Biotechnol 2023; 41:1716-1728. [PMID: 37903921 DOI: 10.1038/s41587-023-01932-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 08/01/2023] [Indexed: 11/01/2023]
Abstract
Recent advances in microbial ecology and synthetic biology have the potential to mitigate damage caused by anthropogenic activities that are deleteriously impacting Earth's soil ecosystems. Here, we discuss challenges and opportunities for harnessing natural and synthetic soil microbial communities, focusing on plant growth promotion under different scenarios. We explore current needs for microbial solutions in soil ecosystems, how these solutions are being developed and applied, and the potential for new biotechnology breakthroughs to tailor and target microbial products for specific applications. We highlight several scientific and technological advances in soil microbiome engineering, including characterization of microbes that impact soil ecosystems, directing how microbes assemble to interact in soil environments, and the developing suite of gene-engineering approaches. This Review underscores the need for an interdisciplinary approach to understand the composition, dynamics and deployment of beneficial soil microbiomes to drive efforts to mitigate or reverse environmental damage by restoring and protecting healthy soil ecosystems.
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Affiliation(s)
- Janet K Jansson
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Ryan McClure
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Robert G Egbert
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
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14
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Hassan MO, Mohamed HY, Okla MK, Kiani BH, Amro A. Dense Cover, but Not Allelopathic Potential, of Naturalized Alien Cenchrus echinatus L. Threatens the Native Species in Urban Vegetation. PLANTS (BASEL, SWITZERLAND) 2023; 12:3736. [PMID: 37960091 PMCID: PMC10648999 DOI: 10.3390/plants12213736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/20/2023] [Accepted: 10/29/2023] [Indexed: 11/15/2023]
Abstract
Exotic plants usually exhibit problems for native species where they coexist. This study evaluated the effect of naturalized alien Cenchrus echinatus L. on native plants in urban vegetation. A field trial was conducted to assess the effect of this species on the cover and diversity of the native vegetation. The allelopathic potential of such species was examined. Sites comprising C. echinatus had a lower cover than some native species. Lower floristic diversity was observed at higher densities of this plant. The soil under this plant attained lower N, P, and K contents. This soil had no effect on the germination and growth of native species. It also comprised germinable seeds of some species which were absent from the standing vegetation. Exotic C. echinatus may exert negative effects on the native vegetation of the urban plant communities. A dense cover of this species may inhibit the germination of native species, leading to a reduction in their cover. Reduction in cover and diversity of native species may not be attributed to allelopathy. These results suggest that naturalized C. echinatus may be more competitive than the native ones, particularly at higher densities. Furthermore, it may represent a threat to the native plants in the urban vegetation.
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Affiliation(s)
- Mahmoud O. Hassan
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef E-62511, Egypt;
| | - Howida Y. Mohamed
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef E-62511, Egypt;
| | - Mohammad K. Okla
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Bushra Hafeez Kiani
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA 01609, USA;
| | - Ahmed Amro
- Department of Botany and Microbiology, Faculty of Science, Assiut University, Assiut 71516, Egypt;
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15
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Bhattarai B, Sigurdsson BD, Sigurdsson P, Leblans N, Janssens I, Meynzer W, Devarajan AK, Truu J, Truu M, Ostonen I. Soil warming duration and magnitude affect the dynamics of fine roots and rhizomes and associated C and N pools in subarctic grasslands. ANNALS OF BOTANY 2023; 132:269-279. [PMID: 37471454 PMCID: PMC10583211 DOI: 10.1093/aob/mcad102] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/18/2023] [Indexed: 07/22/2023]
Abstract
BACKGROUND AND AIMS The response of subarctic grassland's below-ground to soil warming is key to understanding this ecosystem's adaptation to future climate. Functionally different below-ground plant organs can respond differently to changes in soil temperature (Ts). We aimed to understand the below-ground adaptation mechanisms by analysing the dynamics and chemistry of fine roots and rhizomes in relation to plant community composition and soil chemistry, along with the duration and magnitude of soil warming. METHODS We investigated the effects of the duration [medium-term warming (MTW; 11 years) and long-term warming (LTW; > 60 years)] and magnitude (0-8.4 °C) of soil warming on below-ground plant biomass (BPB), fine root biomass (FRB) and rhizome biomass (RHB) in geothermally warmed subarctic grasslands. We evaluated the changes in BPB, FRB and RHB and the corresponding carbon (C) and nitrogen (N) pools in the context of ambient, Ts < +2 °C and Ts > +2 °C scenarios. KEY RESULTS BPB decreased exponentially in response to an increase in Ts under MTW, whereas FRB declined under both MTW and LTW. The proportion of rhizomes increased and the C-N ratio in rhizomes decreased under LTW. The C and N pools in BPB in highly warmed plots under MTW were 50 % less than in the ambient plots, whereas under LTW, C and N pools in warmed plots were similar to those in non-warmed plots. Approximately 78 % of the variation in FRB, RHB, and C and N concentration and pools in fine roots and rhizomes was explained by the duration and magnitude of soil warming, soil chemistry, plant community functional composition, and above-ground biomass. Plant's below-ground biomass, chemistry and pools were related to a shift in the grassland's plant community composition - the abundance of ferns increased and BPB decreased towards higher Ts under MTW, while the recovery of below-ground C and N pools under LTW was related to a higher plant diversity. CONCLUSION Our results indicate that plant community-level adaptation of below ground to soil warming occurs over long periods. We provide insight into the potential adaptation phases of subarctic grasslands.
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Affiliation(s)
- Biplabi Bhattarai
- Institute of Ecology and Earth Sciences, University of Tartu, Estonia
| | - Bjarni D Sigurdsson
- Faculty of Environmental and Forest Sciences, The Agricultural University of Iceland, Iceland
| | - Páll Sigurdsson
- Faculty of Environmental and Forest Sciences, The Agricultural University of Iceland, Iceland
| | - Niki Leblans
- Climate Impact Research Centre, Umeå University, Sweden
| | - Ivan Janssens
- Department of Biology, University of Antwerp, Belgium
| | | | | | - Jaak Truu
- Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Marika Truu
- Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Ivika Ostonen
- Institute of Ecology and Earth Sciences, University of Tartu, Estonia
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Chen B, Ma J, Yang C, Xiao X, Kou W, Wu Z, Yun T, Zaw ZN, Nawan P, Sengprakhon R, Zhou J, Wang J, Sun R, Zhang X, Xie G, Lan G. Diversified land conversion deepens understanding of impacts of rapid rubber plantation expansion on plant diversity in the tropics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 874:162505. [PMID: 36863580 DOI: 10.1016/j.scitotenv.2023.162505] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 02/23/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Understanding the status and changes of plant diversity in rubber (Hevea brasiliensis) plantations is essential for sustainable plantation management in the context of rapid rubber expansion in the tropics, but remains very limited at the continental scale. In this study, we investigated plant diversity from 10-meter quadrats in 240 different rubber plantations in the six countries of the Great Mekong Subregion (GMS)-where nearly half of the world's rubber plantations are located-and analyzed the influence of original land cover types and stand age on plant diversity using Landsat and Sentinel-2 satellite imagery since the late 1980s. The results indicate that the average plant species richness of rubber plantations is 28.69 ± 7.35 (1061 species in total, of which 11.22 % are invasive), approximating half the species richness of tropical forests but roughly double that of the intensively managed croplands. Time-series satellite imagery analysis revealed that rubber plantations were primarily established in place of cropland (RPC, 37.72 %), old rubber plantations (RPORP, 27.63 %), and tropical forests (RPTF, 24.12 %). Plant species richness in RPTF (34.02 ± 7.62) was significantly (p < 0.001) higher than that in RPORP (26.41 ± 7.02) and RPC (26.34 ± 5.37). More importantly, species richness can be maintained for the duration of the 30-year economic cycle, and the number of invasive species decreases as the stand ages. Given diverse land conversions and changes in stand age, the total loss of species richness due to rapid rubber expansion in the GMS was 7.29 %, which is far below the traditional estimates that only consider tropical forest conversion. In general, maintaining higher species richness at the earliest stages of cultivation has significant implications for biodiversity conservation in rubber plantations.
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Affiliation(s)
- Bangqian Chen
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Jun Ma
- Ministry of Education Key Laboratory for biodiversity Science and Ecological Engineering, Institute of biodiversity Science, Fudan University, No. 2005, Songhu Road, Shanghai 200438, China
| | - Chuan Yang
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Xiangming Xiao
- Department of Microbiology and Plant Biology, Center for Earth Observation and Modeling, University of Oklahoma, Norman, OK 73019, USA
| | - Weili Kou
- College of Big Data and Intelligent Engineering, Southwest Forestry University, Kunming, Yunnan 650224, China
| | - Zhixiang Wu
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Ting Yun
- School of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Zar Ni Zaw
- Myanmar Rubber Planters and Producers Association, Yangon 11131, Myanmar; Agricultural Innovation and Management Division, Faculty of Natural Resources, Prince of Songkla University, Songkhla 90110, Thailand
| | - Piyada Nawan
- Songkhla Rubber Research Center, Songkhla 90110, Thailand
| | - Ratchada Sengprakhon
- Rubber Research Institute of Thailand/Rubber Authority of Thailand, Bangkok 10700, Thailand
| | - Jiannan Zhou
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Jikun Wang
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Rui Sun
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Xicai Zhang
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Guishui Xie
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China
| | - Guoyu Lan
- Rubber Research Institute (RRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), Hainan Danzhou Agro-ecosystem National Observation and Research Station, State Key Laboratory Incubation Base for Cultivation & Physiology of Tropical Crops, Haikou 571101, China.
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17
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Lange M, Eisenhauer N, Chen H, Gleixner G. Increased soil carbon storage through plant diversity strengthens with time and extends into the subsoil. GLOBAL CHANGE BIOLOGY 2023; 29:2627-2639. [PMID: 36799509 DOI: 10.1111/gcb.16641] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 05/31/2023]
Abstract
Soils are important for ecosystem functioning and service provisioning. Soil communities and their functions, in turn, are strongly promoted by plant diversity, and such positive effects strengthen with time. However, plant diversity effects on soil organic matter have mostly been investigated in the topsoil, and there are only very few long-term studies. Thus, it remains unclear if plant diversity effects strengthen with time and to which depth these effects extend. Here, we repeatedly sampled soil to 1 m depth in a long-term grassland biodiversity experiment. We investigated how plant diversity impacted soil organic carbon and nitrogen concentrations and stocks and their stable isotopes 13 C and 15 N, as well as how these effects changed after 5, 10, and 14 years. We found that higher plant diversity increased carbon and nitrogen storage in the topsoil since the establishment of the experiment. Stable isotopes revealed that these increases were associated with new plant-derived inputs, resulting in less processed and less decomposed soil organic matter. In subsoils, mainly the presence of specific plant functional groups drove organic matter dynamics. For example, the presence of deep-rooting tall herbs decreased carbon concentrations, most probably through stimulating soil organic matter decomposition. Moreover, plant diversity effects on soil organic matter became stronger in topsoil over time and reached subsoil layers, while the effects of specific plant functional groups in subsoil progressively diminished over time. Our results indicate that after changing the soil system the pathways of organic matter transfer to the subsoil need time to establish. In our grassland system, organic matter storage in subsoils was driven by the redistribution of already stored soil organic matter from the topsoil to deeper soil layers, for example, via bioturbation or dissolved organic matter. Therefore, managing plant diversity may, thus, have significant implications for subsoil carbon storage and other critical ecosystem services.
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Affiliation(s)
- Markus Lange
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Hongmei Chen
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Gerd Gleixner
- Max Planck Institute for Biogeochemistry, Jena, Germany
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18
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Tessler M, David FJ, Cunningham SW, Herstoff EM. Rewilding in Miniature: Suburban Meadows Can Improve Soil Microbial Biodiversity and Soil Health. MICROBIAL ECOLOGY 2023; 85:1077-1086. [PMID: 36725750 DOI: 10.1007/s00248-023-02171-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 01/11/2023] [Indexed: 05/04/2023]
Abstract
Lawns are a ubiquitous, human-made environment created for human enjoyment, leisure, and aesthetics. While net positive for carbon storage, lawns can have negative environmental impacts. Lawns require frequent mowing, which produces high levels of CO2 pollution and kills off native plants. Lawn fertilizing creates its own environmental pollution. One (presumed) ecologically-friendly alternative to lawns is restoration, or rewilding, of these spaces as meadows, which need less maintenance (e.g., infrequent mowing). However, little work has compared lawns against small-scale meadows for biodiversity outside of pollinator studies. Here, we tested the hypotheses that compared to lawns, meadows have (1) unique and higher levels of soil microbial biodiversity and (2) different soil physical and chemical characteristics. We conducted bacterial (16S) and fungal (ITS2) metabarcoding, and found that both bacteria and fungi are indeed more diverse in meadows (significantly so for bacteria). Species composition between meadows and lawns was significantly different for both types of microbes, including higher levels of mycorrhizal fungi in meadows. We also found that chemistry (e.g., potassium and metrics relating to pH) differed significantly between lawns and meadows and was more optimal for plant growth in the meadows. We believe these differences are caused by the different organisms dwelling in these habitats. In summary, these findings point to notable-positive-shifts in microbial and chemical compositions within meadows, further indicating that meadow restoration benefits biodiversity and soil health.
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Affiliation(s)
- Michael Tessler
- Department of Biology, St. Francis College, Brooklyn, NY, 11201, USA.
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY, 10024, USA.
- Division of Invertebrate Zoology, American Museum of Natural History, New York, NY, 10024, USA.
| | - Felix J David
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY, 10024, USA
- Institute of Animal Ecology, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Seth W Cunningham
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY, 10024, USA
- Department of Biological Sciences, Fordham University, Bronx, NY, 10458, USA
| | - Emily M Herstoff
- Department of Biology, St. Francis College, Brooklyn, NY, 11201, USA
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19
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Qian Z, Gu R, Gao K, Li D. High plant species diversity enhances lignin accumulation in a subtropical forest of southwest China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 865:161113. [PMID: 36584443 DOI: 10.1016/j.scitotenv.2022.161113] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/17/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
Plant species diversity (PSD) benefits soil organic carbon (SOC) accumulation, but mechanisms underlying the stimulative effects of PSD on SOC pools have not been well explored, especially in terms of how PSD impacts plant-derived C accumulation. Here, 45 plots covering a natural gradient of PSD ranging from 0.15 to 3.57 (Shannon's diversity index) were selected in a subtropical forest with calcareous soil to determine the pattern of and controls on the variation of plant-derived C as indexed by lignin phenols along with PSD. The absolute contents of lignin phenols ranged from 1.18 to 6.62 mg g-1 soil with an average of 2.48 ± 1.13 mg g-1 soil across the 45 plots. PSD significantly enhanced soil lignin accumulation via three mechanisms. First, PSD benefited lignin accumulation by stimulating plant detritus inputs. Second, PSD directly and indirectly increased reactive minerals, so that enhanced mineral protection of lignin. Third, decrease in microbial C limitation due to increased soil C availability resulted in lowered peroxidase activity and subsequently lignin degradation, which in turn benefited lignin accumulation. Our study provides mechanisms underlying SOC accumulation in response to increased PSD, which may be integrated into Earth system models in order to better predict SOC dynamics under PSD alteration.
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Affiliation(s)
- Zongyao Qian
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, Hunan, China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang Observation and Research Station for Karst Ecosystems, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Huanjiang 547100, Guangxi, China
| | - Rui Gu
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, Hunan, China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang Observation and Research Station for Karst Ecosystems, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Huanjiang 547100, Guangxi, China
| | - Kun Gao
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, Hunan, China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang Observation and Research Station for Karst Ecosystems, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Huanjiang 547100, Guangxi, China
| | - Dejun Li
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, Hunan, China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang Observation and Research Station for Karst Ecosystems, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Huanjiang 547100, Guangxi, China.
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20
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Losada M, Martínez Cortizas AM, Silvius KM, Varela S, Raab TK, Fragoso JM, Sobral M. Mammal and tree diversity accumulate different types of soil organic matter in the northern Amazon. iScience 2023; 26:106088. [PMID: 36915677 PMCID: PMC10006633 DOI: 10.1016/j.isci.2023.106088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 12/06/2022] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Diversity of plants and animals influence soil carbon through their contributions to soil organic matter (SOM). However, we do not know whether mammal and tree communities affect SOM composition in the same manner. This question is relevant because not all forms of carbon are equally resistant to mineralization by microbes and thus, relevant to carbon storage. We analyzed the elemental and molecular composition of 401 soil samples, with relation to the species richness of 83 mammal and tree communities at a landscape scale across 4.8 million hectares in the northern Amazon. We found opposite effects of mammal and tree richness over SOM composition. Mammal diversity is related to SOM rich in nitrogen, sulfur and iron whereas tree diversity is related to SOM rich in aliphatic and carbonyl compounds. These results help us to better understand the role of biodiversity in the carbon cycle and its implications for climate change mitigation.
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Affiliation(s)
- María Losada
- CRETUS - EcoPast (GI-1553), Departmento de Edafoloxía e Química Agrícola, Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Antonio M. Martínez Cortizas
- CRETUS - EcoPast (GI-1553), Departmento de Edafoloxía e Química Agrícola, Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Bolin Centre for Climate Research, Stockholm University, 106 91 Stockholm, Sweden
| | - Kirsten M. Silvius
- Department of Forest Resources and Environmental Conservation, Virginia Tech University, Blacksburg, VA 24061, USA
| | - Sara Varela
- MAPAS Lab, Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, 36310 Vigo, Spain
| | - Ted K. Raab
- Carnegie Institution for Science, Deparment of Global Ecology, Stanford, CA 94305, USA
| | - Jose M.V. Fragoso
- Departamento de Zoologia, Universidade de Brasılia, Brasılia, DF 70910-900, Brazil
- Institute of Biodiversity Science and Sustainability, California Academy of Sciences, San Francisco, CA 94118, USA
| | - Mar Sobral
- CRETUS - EcoPast (GI-1553), Departmento de Edafoloxía e Química Agrícola, Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Corresponding author
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21
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Zhou X, Liu L, Zhao J, Zhang J, Cai Z, Huang X. High carbon resource diversity enhances the certainty of successful plant pathogen and disease control. THE NEW PHYTOLOGIST 2023; 237:1333-1346. [PMID: 36305241 DOI: 10.1111/nph.18582] [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: 09/06/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
The host-associated microbiome highly determines plant health. Available organic resources, such as food for microbes, are important in shaping microbial community structure and multifunctionality. However, how using organic resources precisely manipulates the soil microbiome and makes it supportive of plant health remains unclear. Here, we experimentally tested the influence of carbon resource diversity on the microbial trophic network and pathogen invasion success in a microcosm study. We further explored how resource diversity affects microbial evenness, community functions, and plant disease outcomes in systems involving tomato plants and the in vivo soil microbiome. Increasing available resource diversity altered trophic network architecture, increased microbial evenness, and thus increased the certainty of successful pathogen control. By contrast, the invasion resistance effects of low resource diversity were less effective and highly varied. Accordingly, increases in the evenness and connection of dominant species induced by high resource diversity significantly contributed to plant disease suppression. Furthermore, high carbohydrate diversity upregulated plant immune system regulation-related microbial functions. Our results deepen the biodiversity-invasion resistance theory and provide practical guidance for the control of plant pathogens and diseases by using organic resource-mediated approaches, such as crop rotation, intercropping, and organic amendments.
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Affiliation(s)
- Xing Zhou
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
| | - Liangliang Liu
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
| | - Jun Zhao
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, 210023, China
| | - Jinbo Zhang
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
| | - Zucong Cai
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, 210023, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
| | - Xinqi Huang
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, 210023, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
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22
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Plant litter strengthens positive biodiversity-ecosystem functioning relationships over time. Trends Ecol Evol 2023; 38:473-484. [PMID: 36599737 DOI: 10.1016/j.tree.2022.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 01/04/2023]
Abstract
Plant biodiversity-productivity relationships become stronger over time in grasslands, forests, and agroecosystems. Plant shoot and root litter is important in mediating these positive relationships, yet the functional role of plant litter remains overlooked in long-term experiments. We propose that plant litter strengthens biodiversity-ecosystem functioning relationships over time in four ways by providing decomposing detritus that releases nitrogen (N) over time for uptake by existing and succeeding plants, enhancing overall soil fertility, changing soil community composition, and reducing the impact of residue-borne pathogens and pests. We bring new insights into how diversity-productivity relationships may change over time and suggest that the diversification of crop residue retention through increased residue diversity from plant mixtures will improve the sustainability of food production systems.
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23
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Wagg C, Roscher C, Weigelt A, Vogel A, Ebeling A, de Luca E, Roeder A, Kleinspehn C, Temperton VM, Meyer ST, Scherer-Lorenzen M, Buchmann N, Fischer M, Weisser WW, Eisenhauer N, Schmid B. Biodiversity-stability relationships strengthen over time in a long-term grassland experiment. Nat Commun 2022; 13:7752. [PMID: 36517483 PMCID: PMC9751076 DOI: 10.1038/s41467-022-35189-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/22/2022] [Indexed: 12/15/2022] Open
Abstract
Numerous studies have demonstrated that biodiversity drives ecosystem functioning, yet how biodiversity loss alters ecosystems functioning and stability in the long-term lacks experimental evidence. We report temporal effects of species richness on community productivity, stability, species asynchrony, and complementarity, and how the relationships among them change over 17 years in a grassland biodiversity experiment. Productivity declined more rapidly in less diverse communities resulting in temporally strengthening positive effects of richness on productivity, complementarity, and stability. In later years asynchrony played a more important role in increasing community stability as the negative effect of richness on population stability diminished. Only during later years did species complementarity relate to species asynchrony. These results show that species complementarity and asynchrony can take more than a decade to develop strong stabilizing effects on ecosystem functioning in diverse plant communities. Thus, the mechanisms stabilizing ecosystem functioning change with community age.
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Affiliation(s)
- Cameron Wagg
- Department of Geography, Remote Sensing Laboratories, University of Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland.
- Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, 95 Innovation Road, Post Office Box 20280, Fredericton, E3B 4Z7, NB, Canada.
| | - Christiane Roscher
- UFZ, Helmholtz Centre for Environmental Research, Department of Physiological Diversity, Permoserstrasse 15, D-04318, Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103, Leipzig, Germany
| | - Alexandra Weigelt
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103, Leipzig, Germany
- Institute of Biology, Leipzig University, Johannisallee 21, 04103, Leipzig, Germany
- Institute of Ecology and Evolution, University of Jena, Dornburger Straße 159, D-07743, Jena, Germany
| | - Anja Vogel
- Department of Geography, Remote Sensing Laboratories, University of Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103, Leipzig, Germany
- Institute of Biology, Leipzig University, Johannisallee 21, 04103, Leipzig, Germany
- Institute of Ecology and Evolution, University of Jena, Dornburger Straße 159, D-07743, Jena, Germany
| | - Anne Ebeling
- Institute of Ecology and Evolution, University of Jena, Dornburger Straße 159, D-07743, Jena, Germany
| | - Enrica de Luca
- Department of Geography, Remote Sensing Laboratories, University of Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
| | - Anna Roeder
- UFZ, Helmholtz Centre for Environmental Research, Department of Physiological Diversity, Permoserstrasse 15, D-04318, Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103, Leipzig, Germany
| | - Clemens Kleinspehn
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | | | - Sebastian T Meyer
- Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, Center for Food and Life Sciences Weihenstephan, Technische Universitat Munchen, Hans-Carl-von-Carlowitz-Platz 2, D-85350, Freising-Weihenstephan, Germany
| | | | - Nina Buchmann
- Institute of Agricultural Sciences, ETH Zurich, Universitatstrasse 2, 8092, Zurich, Switzerland
| | - Markus Fischer
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | - Wolfgang W Weisser
- Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, Center for Food and Life Sciences Weihenstephan, Technische Universitat Munchen, Hans-Carl-von-Carlowitz-Platz 2, D-85350, Freising-Weihenstephan, Germany
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103, Leipzig, Germany
- Institute of Biology, Leipzig University, Puschstraße 4, 04103, Leipzig, Germany
| | - Bernhard Schmid
- Department of Geography, Remote Sensing Laboratories, University of Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland.
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24
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Liu W, Qiu K, Xie Y, Huang Y, Wang R, Li H, Meng W, He Y, Li Y, Li H, Zhao P, Yang Y. High-Throughput Absolute Quantification Sequencing Reveals that a Combination of Leguminous Shrubs Is Effective in Driving Soil Bacterial Diversity During the Process of Desertification Reversal. MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02151-0. [PMID: 36495359 DOI: 10.1007/s00248-022-02151-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
Desertification leads to the extreme fragility of ecosystems and seriously threatens ecosystem functioning in desert areas. The planting of xerophytes, especially leguminous shrubs, is an effective and common means to reverse desertification. Soil microorganisms play a crucial role in nutrient cycling and energy flow in ecosystems. However, the effects of introducing leguminous shrubs on soil microbial diversity and the relevant mechanisms are not clear. Here, we employed the high-throughput absolute quantification 16S rRNA sequencing method to analyze the diversity of soil bacteria in sand-fixing areas of mixed shrublands with three combinations of shrubs, i.e., C. korshinskii × Corethrodendron scoparium (CaKCoS), C. korshinskii × Calligonum mongolicum (CaKCaM), and C. scoparium × C. mongolicum (CoSCaM), in the south of the Mu Us Sandy Land, China. This area suffered from moving dunes 20 years ago, but after introducing these shrubs to fix the dunes, the ecosystem was restored. Additionally, the effects of soil physicochemical properties on soil bacterial composition and diversity were analyzed with redundancy analysis (RDA) and structural equation modeling (SEM). It was found that the Shannon index of soil bacteria in CaKCoS was significantly higher than that in CaKCaM and CoSCaM, and the abundance of the dominant phyla, including Actinobacteria, Proteobacteria, Acidobacteria, Chloroflexi, Planctomycetes, Thaumarchaeota, Armatimonadetes, candidate_division_WPS-1, and Nitrospirae, increased significantly in CaKCoS and CaKCaM compared to that in CoSCaM. RDA showed that the majority of soil properties, such as total nitrogen (TN), available potassium (AK), N:P ratio, soil moisture (SM), and available phosphorus (AP), were important soil environmental factors affecting the abundance of the dominant phyla, and RDA1 and RDA2 accounted for 56.66% and 2.35% of the total variation, respectively. SEM showed that the soil bacterial α-diversity was positively affected by the soil organic carbon (SOC), N:P ratio, and total phosphorus (TP). Moreover, CaKCoS had higher SM, total carbon (TC), total potassium (TK), and AP than CaKCaM and CoSCaM. Collectively, these results highlight a conceptual framework in which the combination of leguminous shrubs can effectively drive soil bacterial diversity by improving soil physicochemical properties and maintaining ecosystem functioning during desertification reversal.
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Affiliation(s)
- Wangsuo Liu
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
- Ningxia Grape Wine and Desertification Prevention Technical College, Yinchuan, 750199, Ningxia, China
| | - Kaiyang Qiu
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China.
- Ningxia Grassland and Animal Husbandry Engineering Technology Research Center, Yinchuan, 750021, Ningxia, China.
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of Northwest China, Yinchuan, 750021, Ningxia, China.
| | - Yingzhong Xie
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
- Ningxia Grassland and Animal Husbandry Engineering Technology Research Center, Yinchuan, 750021, Ningxia, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of Northwest China, Yinchuan, 750021, Ningxia, China
| | - Yeyun Huang
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
| | - Ruixia Wang
- Ningxia Administration of Baijitan National Nature Reserve, Lingwu, 750400, Ningxia, China
| | - Haichao Li
- Ningxia Administration of Baijitan National Nature Reserve, Lingwu, 750400, Ningxia, China
| | - Wenfen Meng
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
| | - Yi He
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
| | - Yayuan Li
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
| | - Haiquan Li
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
| | - Pengbo Zhao
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
| | - Yi Yang
- School of Agriculture, Ningxia University, Yinchuan, 750021, Ningxia, China
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Ma J, Li C, Hui L, Wang J, Fan Y. Soil properties under different ecological restoration modes for the quarry in Yanshan mountains of Hebei province, China. PeerJ 2022; 10:e14359. [PMID: 36420130 PMCID: PMC9677879 DOI: 10.7717/peerj.14359] [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: 07/14/2022] [Accepted: 10/18/2022] [Indexed: 11/21/2022] Open
Abstract
The ecological environment of quarry mining area is fragile, and the vegetation restoration cycle is long and difficult, so scientific and appropriate artificial vegetation is of great significance to ecological restoration. The purpose of this study was to evaluate the herbaceous and woody vegetation restoration, including Medicago sativa (Me), artificial miscellaneous grass (Mg), Rhus typhina (Rh), fruit orchard (Or) and Pinus tabulaeformis (Pi), to investigate the soil physicochemical properties and the structure of the microbial communities, and to reveal the correlation between them. The results addressed that Medicago sativa and artificial miscellaneous grass had significant effect on soil remediation, which were conducive to scientific and efficient ecological restoration, and could promote ecological restoration in the damaged ecosystems. While, the modes of Rh and Pi were not suitable for ecological restoration in this study area because they had strong allelopathy. Another arborous restoration mode of Or showed a better improvement effect (including soil nutrients, soil microbial diversity, etc.) than that of Rh and Pi. The findings also indicated that the herbaceous vegetation restoration modes of Me and Mg significantly increased the relative abundance of Proteobacteria, Acidobacteria, Actinobacteria bacteria, Ascomycota and Mortierllomycota fungi, and reduced the relative abundance of Firmicutes bacteria and Basidiomycota fungi. This study also revealed that the trend of bacterial localization in the fruit orchard, artificial miscellaneous grass and Medicago sativa was more obvious. Among many soil abiotic factors, the contents of organic matter, available nitrogen and pH were the most important factors affecting soil microbial community.
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Affiliation(s)
- Jianjun Ma
- College of Life Science, Lang Fang Normal University, Lang Fang, Hebei Province, China
| | - Chenyao Li
- Inner Mongolia Key Laboratory for Biomass-Energy Conversion, Baotou, Inner Mongolia, China,School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, China
| | - Liu Hui
- Langfang Zetong Forestry Engineering Design Co., Ltd., Lang Fang, Hebei Province, China
| | - Jing Wang
- Department of Civil Engineering, Ordos Institute Technology, Ordos, Inner Mongolia, China
| | - Yongjun Fan
- Inner Mongolia Key Laboratory for Biomass-Energy Conversion, Baotou, Inner Mongolia, China,School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, China
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Larson CD, Rew LJ. Restoration intensity shapes floristic recovery after forest road decommissioning. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115729. [PMID: 35853306 DOI: 10.1016/j.jenvman.2022.115729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/29/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
Forest roads fragment and degrade ecosystems and many have fallen into disrepair and are underutilized, to address these issues the United States Forest Service is restoring, or "decommissioning," thousands of kilometers of forest roads each year. Despite the prevalence of decommissioning and the importance of vegetation to restoration success, relatively little is known about floristic responses to different forest road decommissioning treatments or subsequent recovery to reference conditions. Over a ten year period, this study assessed floristic cover, diversity, and composition responses to and recovery on forest roads decommissioned using three treatments varying in intensity (abandonment, ripping, recontouring), in Montana, USA. Initially, floristic cover groups were lowest on the recontoured roads, however, they demonstrated the fastest temporal response (e.g. increased litter and vegetative cover). The floristic communities of both active treatments (ripped and recontoured) had more species and were more diverse than the communities of the abandoned (control) treatment. Among the three on-road plant communities, the recontoured treatment was most associated with desirable species, including the native shrubs Rosa woodsii and Spirea betulifolia, while the abandoned treatment was most associated with two non-native species, Taraxacum officinale and Trifolium repens. Assessed using a restoration index, recovery to reference conditions was limited in all treatments, however, the recontoured treatment had a positive restoration trajectory in seven of eight metrics and was the best recovered treatment. Community composition on the recontoured treatment had more native species than the other treatments, and was moving toward, though still substantially different from, reference communities. These findings demonstrate that restoration of forest roads benefit from active restoration methods and, while forest road recontouring facilitates floristic recovery in the first decade after decommissioning, full recovery will likely take years to decades longer.
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Affiliation(s)
- Christian D Larson
- Department of Land Resources and Environmental Sciences, Montana State University, 334 Leon Johnson Hall, Bozeman, MT, 59717, United States.
| | - Lisa J Rew
- Department of Land Resources and Environmental Sciences, Montana State University, 334 Leon Johnson Hall, Bozeman, MT, 59717, United States
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Xu L, Li D, Wang D, Ye L, Nie Y, Fang H, Xue W, Bai C, Van Ranst E. Achieving the dual goals of biomass production and soil rehabilitation with sown pasture on marginal cropland: Evidence from a multi-year field experiment in Northeast Inner Mongolia. FRONTIERS IN PLANT SCIENCE 2022; 13:985864. [PMID: 36247641 PMCID: PMC9557734 DOI: 10.3389/fpls.2022.985864] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
Grassland is the primary land use in China but has experienced severe degradation in recent decades due to overgrazing and conversion to agricultural production. Here, we conducted a field experiment in northeastern Inner Mongolia to test the effectiveness of sown pastures in lowering the grazing pressure on grasslands and raising the quality of marginal soils. Alfalfa and smooth bromegrass monocultures and mixture were sown in a marginal cropland field in Hulunber in June 2016. Biomass productivity, soil physicochemical, and biological properties were monitored annually from 2016 to 2020. The results showed that the marginal cropland soil responded consistently positively to sown pastures for major soil properties. Soil organic carbon (SOC) and total nitrogen (TN) increased by 48 and 21%, respectively, from 2016 to 2020 over the 0-60 cm soil depth range. Soil microbes responded proactively too. The soil microbial biomass C (SMBC) and N (SMBN) increased by 117 and 39%, respectively, during the period of 2016-2020. However, by the end of the experiment, the soil of a natural grassland field, which was included in the experiment as a control, led the sown pasture soil by 28% for SOC, 35% for TN, 66% for SMBC, and 96% for SMBN. Nevertheless, the natural grassland soil's productive capacity was inferior to that of the sown pasture soil. The average aboveground biomass productivity of sown pastures was measured at 8.4 Mg ha-1 in 2020, compared to 5.0 Mg ha-1 for natural grassland, while the root biomass of sown pastures was averaged at 7.5 Mg ha-1, leading the natural grassland by 15%. Our analyses also showed that the sown pastures' biomass productivity advantage had a much-neglected potential in natural grassland protection. If 50% of the available marginal cropland resources in Hulunber under the current environmental protection law were used for sown pastures, the livestock grazing pressure on the natural grasslands would decrease by a big margin of 38%. Overall, these results represent systematic empirical and analytical evidence of marginal cropland soil's positive responses to sown pastures, which shows clearly that sown pasture is a valid measure both for soil rehabilitation and biomass production.
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Affiliation(s)
- Lijun Xu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Da Li
- Department of Grassland Research, Baicheng Institute of Animal Husbandry, Baicheng, China
| | - Di Wang
- Department of Grassland Research, Baicheng Institute of Animal Husbandry, Baicheng, China
| | - Liming Ye
- Department of Geology, Ghent University, Ghent, Belgium
| | - Yingying Nie
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Huajun Fang
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Wei Xue
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chunli Bai
- Grassland Research Institute, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot, China
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Oburger E, Schmidt H, Staudinger C. Harnessing belowground processes for sustainable intensification of agricultural systems. PLANT AND SOIL 2022; 478:177-209. [PMID: 36277079 PMCID: PMC9579094 DOI: 10.1007/s11104-022-05508-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/18/2022] [Indexed: 06/16/2023]
Abstract
Increasing food demand coupled with climate change pose a great challenge to agricultural systems. In this review we summarize recent advances in our knowledge of how plants, together with their associated microbiota, shape rhizosphere processes. We address (molecular) mechanisms operating at the plant-microbe-soil interface and aim to link this knowledge with actual and potential avenues for intensifying agricultural systems, while at the same time reducing irrigation water, fertilizer inputs and pesticide use. Combining in-depth knowledge about above and belowground plant traits will not only significantly advance our mechanistic understanding of involved processes but also allow for more informed decisions regarding agricultural practices and plant breeding. Including belowground plant-soil-microbe interactions in our breeding efforts will help to select crops resilient to abiotic and biotic environmental stresses and ultimately enable us to produce sufficient food in a more sustainable agriculture in the upcoming decades.
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Affiliation(s)
- Eva Oburger
- Department of Forest and Soil Science, Institute of Soil Research, University of Natural Resources and Life Sciences, Konrad Lorenzstrasse 24, 3430 Tulln an der Donau, Austria
| | - Hannes Schmidt
- Centre for Microbiology and Environmental Systems Science, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
| | - Christiana Staudinger
- Department of Forest and Soil Science, Institute of Soil Research, University of Natural Resources and Life Sciences, Konrad Lorenzstrasse 24, 3430 Tulln an der Donau, Austria
- Graduate School of Integrated Sciences for Life, Hiroshima University, Kagamiyama 1-7-1, Higashi-Hiroshima, Japan
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Liu M, Xu X, Yang B, Zhang N, Ma Z, van Dam NM, Bruelheide H. Niche partitioning in nitrogen uptake among subtropical tree species enhances biomass production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153716. [PMID: 35149074 DOI: 10.1016/j.scitotenv.2022.153716] [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: 11/21/2021] [Revised: 01/16/2022] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Nitrogen (N) is a main nutrient limiting plant growth in most terrestrial ecosystems, but so far it remains unknown which role plant N uptake plays for the positive relationship between species richness and productivity. An in situ15N labeling experiment was carried out by planting four subtropical tree species (i.e., Koelreuteria bipinnata, Lithocarpus glaber, Cyclobalanopsis myrsinaefolia and Castanopsis eyrei) in pots, at richness levels 1, 2 and 4 species per pot. Plant N uptake preference for inorganic N form of NO3- to NH4+ and organic N form of glycine, as well as biomass and plant functional traits was evaluated under different tree species richness level. Overall, pot biomass productivity increased with tree species richness. Biomass of the most productive species, K. bipinnata increased, but not at the expense of a decreased growth of the other species. In mixtures, the species shifted their preference for the inorganic N form, from NO3- to NH4+ or vice versa. The uptake preference for glycine remained stable along the species richness gradient. Plant N uptake was well correlated with numerous functional traits, both aboveground, such as height and shoot diameter, and belowground, such as root diameter and root length. We conclude that increased ecosystem biomass production with tree species richness could be largely explained by niche partitioning in N uptake among tree species. Our findings highlight that niche partitioning for N uptake should be a possible important mechanism maintaining species diversity and ecosystem production in subtropical forests.
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Affiliation(s)
- Min Liu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A, Datun Road, Chaoyang District, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Yanqi Lake, Huairou District, Beijing 101408, China
| | - Xingliang Xu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A, Datun Road, Chaoyang District, Beijing 100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences (CAS), Beijing 100101, China.
| | - Bo Yang
- Jiangxi Key Laboratory of Plant Resources and Biodiversity, Jingdezhen University, 3 Fuliang Avenue, Jingdezhen 333400, Jiangxi, China
| | - Naili Zhang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
| | - Zeqing Ma
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A, Datun Road, Chaoyang District, Beijing 100101, China
| | - Nicole M van Dam
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany; Institute of Biodiversity, Friedrich Schiller University Jena, Dornburger-Str. 159, 07743 Jena, Germany
| | - Helge Bruelheide
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108 Halle (Saale), Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
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Robust Extraction of Soil Characteristics Using Landsat 8 OLI/TIRS. REMOTE SENSING 2022. [DOI: 10.3390/rs14102490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This research utilized various methods for extracting soil characteristics from Landsat 8 OLI/TIRS imagery in the Thua Thien Hue province, Vietnam. In this study, the Object-Based Oriented Classification (OBOC) method was used to extract information about land cover (focusing on rock outcrops) on the basis of the TGSI, NDVI, and NDBI indicators. The soil moisture information was determined by examining the correlation between the Land Surface Temperature (LST) and the Normalized Difference Vegetation Index (NDVI). The findings indicated that 40 locations in the study area were covered with rock outcrops, with a Kappa index of 85.10%. In addition, soil moisture varied markedly from the sandy coastal regions, urban areas, and hilly and mountainous areas on the study area’s surface. The extracted soil information can serve as a foundation for local socio-economic development planning.
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Abstract
This paper’s working hypothesis is that the indigenous farming practices of Timorese farmers are those most suitable and adaptable with regard to these farmers’ circumstances. Intensive farming and the acceleration of land conversion in Java lead to a reduction in favorable cropland and the degradation of soil biology. To meet the demand for food production, unfavorable areas outside Java, including marginal semi-arid areas on Timor Island, East Nusa Tenggara province, have become an important option. Unfortunately, the national crop production policy has paid less attention to the specific biophysical characteristics of the region and how local people have adapted to the diverse marginal environment. We review the literature in the areas of soil nutrition retention and soil biology, vegetation/crop diversity, and farming practices/management, including local wisdom on soil management. This paper highlights that the values of the chemical parameters of the soils in question are varied, but generally range from low to high. The existence of beneficial micro-organisms is important both for improving soil fertility and due to their association with local vegetation/crops. Traditional farming practices, such as the local agroforestry of Mamar, have effectively preserved the existence of micro-organisms that promote conservation practices, crop/vegetation diversity, and sustainable agriculture. We recommend that the expansion of croplands and crop production into marginal semi-arid areas needs to be considered and adapted while taking into consideration sustainability and environmentally sound traditional practices.
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32
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Wu S, Chen Y, Hao C, Liu K, Zhang W, Zhang L. Promoting Biodiversity Conservation Requires a Better Understanding of the Relationships Between Ecosystem Services and Multiple Biodiversity Dimensions. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.891627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In order to reverse the global trend of biodiversity loss, the concept of ecosystem services has been widely applied to make policymakers and the general public realize that conserving biodiversity possesses both intrinsic and utilitarian values. However, to achieve this goal, it is necessary to first have a clear understanding of the relationships between biodiversity and ecosystem services (BES). To advance our understanding of this issue, we first reviewed the major progress in current BES studies, with an emphasis on three biodiversity dimensions (i.e., taxonomic diversity, functional diversity, and ecosystem diversity). Based on the findings, we then propose three research topics as future directions: (1) More direct and explicit studies on the effects of different dimensions of biodiversity on various ecosystem service types; (2) developing a biodiversity-based understanding of the formation of ecosystem services; (3) creation of science-based ecosystem management plans and policies that can maximize synergies between biodiversity conservation and ecosystem service enhancement. By conducting such research, we will be able to not only further understand the complex relationships between biodiversity and ecosystem services but also better promote the concept of ecosystem services for more successful biodiversity conservation in the future.
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33
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Pausas JG, Bond WJ. Feedbacks in ecology and evolution. Trends Ecol Evol 2022; 37:637-644. [PMID: 35466019 DOI: 10.1016/j.tree.2022.03.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 10/18/2022]
Abstract
Ecology and evolutionary biology have focused on how organisms fit the environment. Less attention has been given to the idea that organisms can also modify their environment, and that these modifications can feed back to the organism, thus providing a key factor for their persistence and evolution. There are at least three independent lines of evidence emphasizing these biological feedback processes at different scales: niche construction (population scale); alternative biome states (community scale); and the Gaia hypothesis (planetary scale). These feedback processes make us rethink traditional concepts like niche and adaptation. We argue that organism-environment feedbacks must become a regular part of ecological thinking, especially now that the Earth is quickly changing.
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Affiliation(s)
- Juli G Pausas
- Centro de Investigaciones sobre Desertificación (CIDE-CSIC), Valencia, Spain.
| | - William J Bond
- Department of Biological Sciences, University of Cape Town, Cape Town, South Africa; South African Environmental Observation Network, National Research Foundation, Claremont, South Africa
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Elaboration of a Phytoremediation Strategy for Successful and Sustainable Rehabilitation of Disturbed and Degraded Land. MINERALS 2022. [DOI: 10.3390/min12020111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Humans are dependent upon soil which supplies food, fuel, chemicals, medicine, sequesters pollutants, purifies and conveys water, and supports the built environment. In short, we need soil, but it has little or no need of us. Agriculture, mining, urbanization and other human activities result in temporary land-use and once complete, used and degraded land should be rehabilitated and restored to minimize loss of soil carbon. It is generally accepted that the most effective strategy is phyto-remediation. Typically, phytoremediation involves re-invigoration of soil fertility, physicochemical properties, and its microbiome to facilitate establishment of appropriate climax cover vegetation. A myco-phytoremediation technology called Fungcoal was developed in South Africa to achieve these outcomes for land disturbed by coal mining. Here we outline the contemporary and expanded rationale that underpins Fungcoal, which relies on in situ bio-conversion of carbonaceous waste coal or discard, in order to explore the probable origin of humic substances (HS) and soil organic matter (SOM). To achieve this, microbial processing of low-grade coal and discard, including bio-liquefaction and bio-conversion, is examined in some detail. The significance, origin, structure, and mode of action of coal-derived humics are recounted to emphasize the dynamic equilibrium, that is, humification and the derivation of soil organic matter (SOM). The contribution of plant exudate, extracellular vesicles (EV), extra polymeric substances (EPS), and other small molecules as components of the dynamic equilibrium that sustains SOM is highlighted. Arbuscular mycorrhizal fungi (AMF), saprophytic ectomycorrhizal fungi (EMF), and plant growth promoting rhizobacteria (PGPR) are considered essential microbial biocatalysts that provide mutualistic support to sustain plant growth following soil reclamation and restoration. Finally, we posit that de novo synthesis of SOM is by specialized microbial consortia (or ‘humifiers’) which use molecular components from the root metabolome; and, that combinations of functional biocatalyst act to re-establish and maintain the soil dynamic. It is concluded that a bio-scaffold is necessary for functional phytoremediation including maintenance of the SOM dynamic and overall biogeochemistry of organic carbon in the global ecosystem
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35
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The importance of biodiverse plant communities for healthy soils. Proc Natl Acad Sci U S A 2022; 119:2119953118. [PMID: 34996861 PMCID: PMC8740759 DOI: 10.1073/pnas.2119953118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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36
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Chen P, He W, Shen Y, Zhu L, Yao X, Sun R, Dai C, Sun B, Chen Y. Interspecific Neighbor Stimulates Peanut Growth Through Modulating Root Endophytic Microbial Community Construction. FRONTIERS IN PLANT SCIENCE 2022; 13:830666. [PMID: 35310651 PMCID: PMC8928431 DOI: 10.3389/fpls.2022.830666] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/07/2022] [Indexed: 05/04/2023]
Abstract
Plants have evolved the capability to respond to interspecific neighbors by changing morphological performance and reshaping belowground microbiota. However, whether neighboring plants influence the microbial colonization of the host's root and further affect host performance is less understood. In this study, using 16S rRNA high-throughput sequencing of peanut (Arachis hypogaea L.) roots from over 5 years of mono- and intercropping field systems, we found that neighbor maize can alter the peanut root microbial composition and re-shape microbial community assembly. Interspecific maize coexistence increased the colonization of genera Bradyrhizobium and Streptomyces in intercropped peanut roots. Through endophytic bacterial isolation and isolate back inoculation experiments, we demonstrated that the functional potentials of available nutrient accumulation and phytohormones production from Bradyrhizobium and Streptomyces endowed them with the ability to act as keystones in the microbial network to benefit peanut growth and production with neighbor competition. Our results support the idea that plants establish a plant-endophytic microbial holobiont through root selective filtration to enhance host competitive dominance, and provide a promising direction to develop modern diversified planting for harnessing crop microbiomes for the promotion of crop growth and productivity in sustainable agriculture.
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Affiliation(s)
- Pin Chen
- College of Life Sciences, Nanjing Normal University, Nanjing, China
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Wei He
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yi Shen
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Lingyue Zhu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Xiangzhi Yao
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Ruibo Sun
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Chuanchao Dai
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Bo Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Yan Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- *Correspondence: Yan Chen,
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