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Feng Y, Xu T, Wang W, Sun S, Zhang M, Song F. Nitrogen addition changed soil fungal community structure and increased the biomass of functional fungi in Korean pine plantations in temperate northeast China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172349. [PMID: 38615770 DOI: 10.1016/j.scitotenv.2024.172349] [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: 02/17/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
Nitrogen (N) deposition is a global environmental issue that can have significant impacts on the community structure and function in ecosystems. Fungi play a key role in soil biogeochemical cycles and their community structures are tightly linked to the health and productivity of forest ecosystems. Based on high-throughput sequencing and ergosterol extraction, we examined the changes in community structure, composition, and biomass of soil ectomycorrhizal (ECM) and saprophytic (SAP) fungi in 0-10 cm soil layer after 8 years of continuous N addition and their driving factors in a temperate Korean pine plantation in northeast China. Our results showed that N addition increased fungal community richness, with the highest richness and Chao1 index under the low N treatment (LN: 20 kg N ha-1 yr-1). Based on the FUN Guild database, we found that the relative abundance of ECM and SAP fungi increased first and then decreased with increasing N deposition concentration. The molecular ecological network analysis showed that the interaction between ECM and SAP fungi was enhanced by N addition, and the interaction was mainly positive in the ECM fungal network. N addition increased fungal biomass, and the total fungal biomass (TFB) was the highest under the MN treatment (6.05 ± 0.3 mg g-1). Overall, we concluded that N addition changed soil biochemical parameters, increased fungal activity, and enhanced functional fungal interactions in the Korean pine plantation over an 8-year simulated N addition. We need to consider the effects of complex soil conditions on soil fungi and emphasize the importance of regulating soil fungal community structure and biomass for managing forest ecosystems. These findings could deepen our understanding of the effects of increased N deposition on soil fungi in temperate forests in northern China, which can provide the theoretical basis for reducing the effects of increased N deposition on forest soil.
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Affiliation(s)
- Yuhan Feng
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Tianle Xu
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Wei Wang
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Simiao Sun
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, 150080, China; Heilongjiang Academy of Black Soil Conservation & Utilization, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
| | - Mengmeng Zhang
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Fuqiang Song
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, Harbin, 150080, China.
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Bai Z, Ye J, Liu SF, Sun HH, Yuan ZQ, Mao ZK, Fang S, Long SF, Wang XG. Age-Related Conservation in Plant-Soil Feedback Accompanied by Ectomycorrhizal Domination in Temperate Forests in Northeast China. J Fungi (Basel) 2024; 10:310. [PMID: 38786665 PMCID: PMC11122420 DOI: 10.3390/jof10050310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/20/2024] [Accepted: 04/22/2024] [Indexed: 05/25/2024] Open
Abstract
This study investigates the effects of forest aging on ectomycorrhizal (EcM) fungal community and foraging behavior and their interactions with plant-soil attributes. We explored EcM fungal communities and hyphal exploration types via rDNA sequencing and investigated their associations with plant-soil traits by comparing younger (~120 years) and older (~250 years) temperate forest stands in Northeast China. The results revealed increases in the EcM fungal richness and abundance with forest aging, paralleled by plant-soil feedback shifting from explorative to conservative nutrient use strategies. In the younger stands, Tomentella species were prevalent and showed positive correlations with nutrient availability in both the soil and leaves, alongside rapid increases in woody productivity. However, the older stands were marked by the dominance of the genera Inocybe, Hymenogaster, and Otidea which were significantly and positively correlated with soil nutrient contents and plant structural attributes such as the community-weighted mean height and standing biomass. Notably, the ratios of longer-to-shorter distance EcM fungal exploration types tended to decrease along with forest aging. Our findings underscore the integral role of EcM fungi in the aging processes of temperate forests, highlighting the EcM symbiont-mediated mechanisms adapting to nutrient scarcity and promoting sustainability in plant-soil consortia.
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Affiliation(s)
- Zhen Bai
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (Z.-K.M.); (S.F.); (S.-F.L.); (X.-G.W.)
| | - Ji Ye
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (Z.-K.M.); (S.F.); (S.-F.L.); (X.-G.W.)
| | - Shu-Fang Liu
- College of Rural Revitalization, Weifang University, Weifang 261061, China;
| | - Hai-Hong Sun
- Liaoning Provincial Institute of Poplar, Yingkou 115000, China;
| | - Zuo-Qiang Yuan
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an 710072, China;
| | - Zi-Kun Mao
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (Z.-K.M.); (S.F.); (S.-F.L.); (X.-G.W.)
| | - Shuai Fang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (Z.-K.M.); (S.F.); (S.-F.L.); (X.-G.W.)
| | - Shao-Fen Long
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (Z.-K.M.); (S.F.); (S.-F.L.); (X.-G.W.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu-Gao Wang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (Z.-K.M.); (S.F.); (S.-F.L.); (X.-G.W.)
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Fernandez CW, Mielke L, Stefanski A, Bermudez R, Hobbie SE, Montgomery RA, Reich PB, Kennedy PG. Climate change-induced stress disrupts ectomycorrhizal interaction networks at the boreal-temperate ecotone. Proc Natl Acad Sci U S A 2023; 120:e2221619120. [PMID: 37579148 PMCID: PMC10450648 DOI: 10.1073/pnas.2221619120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 07/10/2023] [Indexed: 08/16/2023] Open
Abstract
The interaction networks formed by ectomycorrhizal fungi (EMF) and their tree hosts, which are important to both forest recruitment and ecosystem carbon and nutrient retention, may be particularly susceptible to climate change at the boreal-temperate forest ecotone where environmental conditions are changing rapidly. Here, we quantified the compositional and functional trait responses of EMF communities and their interaction networks with two boreal (Pinus banksiana and Betula papyrifera) and two temperate (Pinus strobus and Quercus macrocarpa) hosts to a factorial combination of experimentally elevated temperatures and reduced rainfall in a long-term open-air field experiment. The study was conducted at the B4WarmED (Boreal Forest Warming at an Ecotone in Danger) experiment in Minnesota, USA, where infrared lamps and buried heating cables elevate temperatures (ambient, +3.1 °C) and rain-out shelters reduce growing season precipitation (ambient, ~30% reduction). EMF communities were characterized and interaction networks inferred from metabarcoding of fungal-colonized root tips. Warming and rainfall reduction significantly altered EMF community composition, leading to an increase in the relative abundance of EMF with contact-short distance exploration types. These compositional changes, which likely limited the capacity for mycelial connections between trees, corresponded with shifts from highly redundant EMF interaction networks under ambient conditions to less redundant (more specialized) networks. Further, the observed changes in EMF communities and interaction networks were correlated with changes in soil moisture and host photosynthesis. Collectively, these results indicate that the projected changes in climate will likely lead to significant shifts in the traits, structure, and integrity of EMF communities as well as their interaction networks in forest ecosystems at the boreal-temperate ecotone.
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Affiliation(s)
- Christopher W. Fernandez
- Department of Biology, Syracuse University, Syracuse, NY13210
- Department of Plant & Microbial Biology, University of Minnesota, Saint Paul, MN55108
| | - Louis Mielke
- Department of Plant & Microbial Biology, University of Minnesota, Saint Paul, MN55108
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala750 07, Sweden
| | - Artur Stefanski
- Department of Forest Resources, University of Minnesota, Saint Paul, MN55108
| | - Raimundo Bermudez
- Department of Forest Resources, University of Minnesota, Saint Paul, MN55108
| | - Sarah E. Hobbie
- Department of Ecology, Evolution and Behavior, University of Minnesota, Saint Paul, MN55108
| | - Rebecca A. Montgomery
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW2751, Australia
| | - Peter B. Reich
- Department of Forest Resources, University of Minnesota, Saint Paul, MN55108
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW2751, Australia
- Institute for Global Change Biology, and School for Environment and Sustainability, University of Michigan, Ann Arbor, MI48109
| | - Peter G. Kennedy
- Department of Plant & Microbial Biology, University of Minnesota, Saint Paul, MN55108
- Department of Ecology, Evolution and Behavior, University of Minnesota, Saint Paul, MN55108
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4
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Yuan J, Yan Q, Xie J, Wang J, Zhang T. Effects of warming on seed germination of woody species in temperate secondary forests. PLANT BIOLOGY (STUTTGART, GERMANY) 2023; 25:579-592. [PMID: 36970946 DOI: 10.1111/plb.13519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 03/15/2023] [Indexed: 05/17/2023]
Abstract
Seed germination, a critical stage of the plant life cycle providing a link between seeds and seedlings, is commonly temperature-dependent. The global average surface temperature is expected to rise, but little is known about the responses of seed germination of woody plants in temperate forests to warming. In the present study, dried seeds of 23 common woody species in temperate secondary forests were incubated at three temperature sequences without cold stratification and after experiencing cold stratification. We calculated five seed germination indices and the comprehensive membership function value that summarized the above indicators. Compared to the control, +2 and +4 °C treatments without cold stratification shortened germination time by 14% and 16% and increased the germination index by 17% and 26%, respectively. For stratified seeds, +4 °C treatment increased germination percentage by 49%, and +4 and +2 °C treatments increased duration of germination and the germination index, and shortened mean germination time by 69%, 458%, 29% and 68%, 110%, 12%, respectively. The germination of Fraxinus rhynchophylla and Larix kaempferi were most sensitive to warming without and with cold stratification, respectively. Seed germination of shrubs was the least sensitive to warming among functional types. These findings indicate warming (especially extreme warming) will enhance the seedling recruitment of temperate woody species, primarily via shortening the germination time, particularly for seeds that have undergone cold stratification. In addition, shrubs might narrow their distribution range.
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Affiliation(s)
- J Yuan
- Qingyuan Forest CERN, National Observation and Research Station, Shenyang, Liaoning Province, China
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
- Key Laboratory of Terrestrial Ecosystem Carbon Neutrality, Shenyang, Liaoning Province, China
| | - Q Yan
- Qingyuan Forest CERN, National Observation and Research Station, Shenyang, Liaoning Province, China
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang, China
- Key Laboratory of Terrestrial Ecosystem Carbon Neutrality, Shenyang, Liaoning Province, China
| | - J Xie
- Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - J Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - T Zhang
- Qingyuan Forest CERN, National Observation and Research Station, Shenyang, Liaoning Province, China
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang, China
- Key Laboratory of Terrestrial Ecosystem Carbon Neutrality, Shenyang, Liaoning Province, China
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5
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Baldrian P, Bell-Dereske L, Lepinay C, Větrovský T, Kohout P. Fungal communities in soils under global change. Stud Mycol 2022; 103:1-24. [PMID: 36760734 PMCID: PMC9886077 DOI: 10.3114/sim.2022.103.01] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 09/16/2022] [Indexed: 11/07/2022] Open
Abstract
Soil fungi play indispensable roles in all ecosystems including the recycling of organic matter and interactions with plants, both as symbionts and pathogens. Past observations and experimental manipulations indicate that projected global change effects, including the increase of CO2 concentration, temperature, change of precipitation and nitrogen (N) deposition, affect fungal species and communities in soils. Although the observed effects depend on the size and duration of change and reflect local conditions, increased N deposition seems to have the most profound effect on fungal communities. The plant-mutualistic fungal guilds - ectomycorrhizal fungi and arbuscular mycorrhizal fungi - appear to be especially responsive to global change factors with N deposition and warming seemingly having the strongest adverse effects. While global change effects on fungal biodiversity seem to be limited, multiple studies demonstrate increases in abundance and dispersal of plant pathogenic fungi. Additionally, ecosystems weakened by global change-induced phenomena, such as drought, are more vulnerable to pathogen outbreaks. The shift from mutualistic fungi to plant pathogens is likely the largest potential threat for the future functioning of natural and managed ecosystems. However, our ability to predict global change effects on fungi is still insufficient and requires further experimental work and long-term observations. Citation: Baldrian P, Bell-Dereske L, Lepinay C, Větrovský T, Kohout P (2022). Fungal communities in soils under global change. Studies in Mycology 103: 1-24. doi: 10.3114/sim.2022.103.01.
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Affiliation(s)
- P. Baldrian
- Laboratory of Environmental Microbiology, Institute of Microbiology of the Czech Academy of Sciences, Vídeòská 1083, 142 20 Prague, Czech Republic,*Corresponding author: Petr Baldrian,
| | - L. Bell-Dereske
- Laboratory of Environmental Microbiology, Institute of Microbiology of the Czech Academy of Sciences, Vídeòská 1083, 142 20 Prague, Czech Republic
| | - C. Lepinay
- Laboratory of Environmental Microbiology, Institute of Microbiology of the Czech Academy of Sciences, Vídeòská 1083, 142 20 Prague, Czech Republic
| | - T. Větrovský
- Laboratory of Environmental Microbiology, Institute of Microbiology of the Czech Academy of Sciences, Vídeòská 1083, 142 20 Prague, Czech Republic
| | - P. Kohout
- Laboratory of Environmental Microbiology, Institute of Microbiology of the Czech Academy of Sciences, Vídeòská 1083, 142 20 Prague, Czech Republic
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Kwatcho Kengdo S, Peršoh D, Schindlbacher A, Heinzle J, Tian Y, Wanek W, Borken W. Long-term soil warming alters fine root dynamics and morphology, and their ectomycorrhizal fungal community in a temperate forest soil. GLOBAL CHANGE BIOLOGY 2022; 28:3441-3458. [PMID: 35253326 DOI: 10.1111/gcb.16155] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 02/22/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Climate warming is predicted to affect temperate forests severely, but the response of fine roots, key to plant nutrition, water uptake, soil carbon, and nutrient cycling is unclear. Understanding how fine roots will respond to increasing temperature is a prerequisite for predicting the functioning of forests in a warmer climate. We studied the response of fine roots and their ectomycorrhizal (EcM) fungal and root-associated bacterial communities to soil warming by 4°C in a mixed spruce-beech forest in the Austrian Limestone Alps after 8 and 14 years of soil warming, respectively. Fine root biomass (FRB) and fine root production were 17% and 128% higher in the warmed plots, respectively, after 14 years. The increase in FRB (13%) was not significant after 8 years of treatment, whereas specific root length, specific root area, and root tip density were significantly higher in warmed plots at both sampling occasions. Soil warming did not affect EcM exploration types and diversity, but changed their community composition, with an increase in the relative abundance of Cenoccocum at 0-10 cm soil depth, a drought-stress-tolerant genus, and an increase in short- and long-distance exploration types like Sebacina and Boletus at 10-20 cm soil depth. Warming increased the root-associated bacterial diversity but did not affect their community composition. Soil warming did not affect nutrient concentrations of fine roots, though we found indications of limited soil phosphorus (P) and potassium (K) availability. Our findings suggest that, in the studied ecosystem, global warming could persistently increase soil carbon inputs due to accelerated fine root growth and turnover, and could simultaneously alter fine root morphology and EcM fungal community composition toward improved nutrient foraging.
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Affiliation(s)
- Steve Kwatcho Kengdo
- Department of Soil Ecology, Bayreuth Center of Ecology and Environmental Research (BAYCEER), University of Bayreuth, Bayreuth, Germany
| | - Derek Peršoh
- Department of Geobotany, Ruhr-Universität Bochum, Bochum, Germany
| | - Andreas Schindlbacher
- Department of Forest Ecology and Soil, Federal Research and Training Centre for Forests, Natural Hazards and Landscape-BFW, Vienna, Austria
| | - Jakob Heinzle
- Department of Forest Ecology and Soil, Federal Research and Training Centre for Forests, Natural Hazards and Landscape-BFW, Vienna, Austria
| | - Ye Tian
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, Center of Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
| | - Wolfgang Wanek
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, Center of Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
| | - Werner Borken
- Department of Soil Ecology, Bayreuth Center of Ecology and Environmental Research (BAYCEER), University of Bayreuth, Bayreuth, Germany
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Wang X, Han Q. A Closer Examination of the 'Abundant-Center' for Ectomycorrhizal Fungal Community Associated With Picea crassifolia in China. FRONTIERS IN PLANT SCIENCE 2022; 13:759801. [PMID: 35283884 PMCID: PMC8908202 DOI: 10.3389/fpls.2022.759801] [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: 08/17/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
A long-standing hypothesis in biogeography predicts that a species' abundance is highest at the center of its geographical range and decreases toward its edges. In this study, we test the abundant-center hypothesis of ectomycorrhizal (ECM) fungal communities associated with Picea crassifolia, an endemic species widely distributed in northwest China. We analyzed the taxonomic richness and the relative abundance of ECM fungi in four main distribution areas, from center to edges. In total, 234 species of ECM fungi were detected, and of these, 137 species were shared among all four sites. Inocybe, Sebacina, Tomentella, and Cortinarius were the dominant genera. ECM fungal richness and biodiversity were highest at the central and lower at peripheral sites. Our results indicated that ECM fungal species richness was consistent with the abundant-center hypothesis, while the relative abundances of individual fungal genera shifted inconsistently across the plant's range.
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Affiliation(s)
- Xiaobing Wang
- School of Civil Engineering and Architecture, Xinxiang University, Xinxiang, China
| | - Qisheng Han
- Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, China
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8
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Jaramillo A, Mendoza-Ponce A. Climate Change Overview. Fungal Biol 2022. [DOI: 10.1007/978-3-030-89664-5_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Khokon AM, Schneider D, Daniel R, Polle A. Soil Layers Matter: Vertical Stratification of Root-Associated Fungal Assemblages in Temperate Forests Reveals Differences in Habitat Colonization. Microorganisms 2021; 9:2131. [PMID: 34683452 PMCID: PMC8537680 DOI: 10.3390/microorganisms9102131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 11/17/2022] Open
Abstract
Ectomycorrhizal and saprotrophic fungi play pivotal roles in ecosystem functioning. Here, we studied the vertical differentiation of root-associated fungi (RAF) in temperate forests. We analysed RAF assemblages in the organic and mineral soil from 150 experimental forest plots across three biogeographic regions spanning a distance of about 800 km. Saprotrophic RAF showed the highest richness in organic and symbiotrophic RAF in mineral soil. Symbiotrophic RAF exhibited higher relative abundances than saprotrophic fungi in both soil layers. Beta-diversity of RAF was mainly due to turnover between organic and mineral soil and showed regional differences for symbiotrophic and saprotrophic fungi. Regional differences were also found for different phylogenetic levels, i.e., fungal orders and indicator species in the organic and mineral soil, supporting that habitat conditions strongly influence differentiation of RAF assemblages. Important exceptions were fungal orders that occurred irrespective of the habitat conditions in distinct soil layers across the biogeographic gradient: Russulales and Cantharellales (ectomycorrhizal fungi) were enriched in RAF assemblages in mineral soil, whereas saprotrophic Polyporales and Sordariales and ectomycorrhizal Boletales were enriched in RAF assemblages in the organic layer. These results underpin a phylogenetic signature for niche partitioning at the rank of fungal orders and suggest that RAF assembly entails two strategies encompassing flexible and territorial habitat colonization by different fungal taxa.
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Affiliation(s)
- Anis Mahmud Khokon
- Department of Forest Botany and Tree Physiology, University of Göttingen, 37077 Göttingen, Germany;
| | - Dominik Schneider
- Genomic and Applied Microbiology and Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, University of Göttingen, 37077 Göttingen, Germany; (D.S.); (R.D.)
| | - Rolf Daniel
- Genomic and Applied Microbiology and Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, University of Göttingen, 37077 Göttingen, Germany; (D.S.); (R.D.)
| | - Andrea Polle
- Department of Forest Botany and Tree Physiology, University of Göttingen, 37077 Göttingen, Germany;
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Zhang W, Bahadur A, Sajjad W, Wu X, Zhang G, Liu G, Chen T. Seasonal Variation in Fungal Community Composition Associated with Tamarix chinensis Roots in the Coastal Saline Soil of Bohai Bay, China. MICROBIAL ECOLOGY 2021; 82:652-665. [PMID: 33598747 DOI: 10.1007/s00248-021-01680-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Coastal salinity typically alters the soil microbial communities, which subsequently affect the biogeochemical cycle of nutrients in the soil. The seasonal variation of the soil fungal communities in the coastal area, closely associated with plant population, is poorly understood. This study provides an insight into the fungal community's variations from autumn to winter and spring to summer at a well-populated area of salt-tolerant Tamarix chinensis and beach. The richness and diversity of fungal community were higher in the spring season and lower in the winter season, as showed by high throughput sequencing of the 18S rRNA gene. Ascomycota was the predominant phylum reported in all samples across the region, and higher difference was reported at order level across the seasonal variations. The redundancy analysis suggested that the abundance and diversity of fungal communities in different seasons are mainly correlated to total organic carbon and total nitrogen. Additionally, the saprotrophic and pathotrophic fungi decreased while symbiotic fungi increased in the autumn season. This study provides a pattern of seasonal variation in fungal community composition that further broadens our limited understanding of how the density of the salt-tolerant T. chinensis population of the coastal saline soil could respond to their seasonal variations.
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Affiliation(s)
- Wei Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Ali Bahadur
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Wasim Sajjad
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Xiukun Wu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Gaosen Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Guangxiu Liu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China.
| | - Tuo Chen
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
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11
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Pec GJ, Diepen LTA, Knorr M, Grandy AS, Melillo JM, DeAngelis KM, Blanchard JL, Frey SD. Fungal community response to long‐term soil warming with potential implications for soil carbon dynamics. Ecosphere 2021. [DOI: 10.1002/ecs2.3460] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Gregory J. Pec
- Department of Natural Resources and the Environment University of New Hampshire Durham New Hampshire03824USA
| | - Linda T. A. Diepen
- Department of Ecosystem Science and Management University of Wyoming Laramie Wyoming82071USA
| | - Melissa Knorr
- Department of Natural Resources and the Environment University of New Hampshire Durham New Hampshire03824USA
| | - A. Stuart Grandy
- Department of Natural Resources and the Environment University of New Hampshire Durham New Hampshire03824USA
| | - Jerry M. Melillo
- The Ecosystems Center Marine Biological Laboratory Woods Hole Massachusetts02543USA
| | - Kristen M. DeAngelis
- Department of Microbiology University of Massachusetts Amherst Massachusetts01003USA
| | | | - Serita D. Frey
- Department of Natural Resources and the Environment University of New Hampshire Durham New Hampshire03824USA
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12
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Van Nuland ME, Smith DP, Bhatnagar JM, Stefanski A, Hobbie SE, Reich PB, Peay KG. Warming and disturbance alter soil microbiome diversity and function in a northern forest ecotone. FEMS Microbiol Ecol 2020; 96:5849001. [PMID: 32472932 DOI: 10.1093/femsec/fiaa108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 05/28/2020] [Indexed: 12/11/2022] Open
Abstract
The response to global change by soil microbes is set to affect important ecosystem processes. These impacts could be most immediate in transitional zones, such as the temperate-boreal forest ecotone, yet previous work in these forests has primarily focused on specific subsets of microbial taxa. Here, we examined how bacterial and fungal communities respond to simulated above- and below-ground warming under realistic field conditions in closed and open canopy treatments in Minnesota, USA. Our results show that warming and canopy disturbance shifted bacterial and fungal community structure as dominant bacterial and fungal groups differed in the direction and intensity of their responses. Ectomycorrhizal and saprotrophic fungal communities with greater connectivity (higher prevalence of strongly interconnected taxa based on pairwise co-occurrence relationships) were more resistant to compositional change. Warming effects on soil enzymes involved in the hydrolytic and oxidative liberation of carbon from plant cell walls and nutrients from organic matter were most strongly linked to fungal community responses, although community structure-function relationships differed between fungal guilds. Collectively, these findings indicate that warming and disturbance will influence the composition and function of microbial communities in the temperate-boreal ecotone, and fungal responses are particularly important to understand for predicting future ecosystem functioning.
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Affiliation(s)
| | - Dylan P Smith
- University of California, California Institute for Quantitative Biosciences, Berkeley, CA 94720 USA
| | | | - Artur Stefanski
- Department of Forest Resources, University of Minnesota, St. Paul, MN 55108 USA
| | - Sarah E Hobbie
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN 55108 USA
| | - Peter B Reich
- Department of Forest Resources, University of Minnesota, St. Paul, MN 55108 USA.,Hawkesbury Institute for the Environment, Western Sydney University, Richmond, 2753, NSW Australia
| | - Kabir G Peay
- Department of Biology, Stanford University, Stanford, CA 94305 USA
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13
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Abstract
The role of microbes in sustaining agricultural plant growth has great potential consequences for human prosperity. Yet we have an incomplete understanding of the basic function of rhizosphere microbial communities and how they may change under future stresses, let alone how these processes might be harnessed to sustain or improve crop yields. A reductionist approach may aid the generation and testing of hypotheses that can ultimately be translated to agricultural practices. With this in mind, we ask whether some rhizosphere microbial communities might be governed by 'keystone metabolites', envisioned here as microbially produced molecules that, through antibiotic and/or growth-promoting properties, may play an outsized role in shaping the development of the community spatiotemporally. To illustrate this point, we use the example of redox-active metabolites, and in particular phenazines, which are produced by many bacteria found in agricultural soils and have well-understood catalytic properties. Phenazines can act as potent antibiotics against a variety of cell types, yet they also can promote the acquisition of essential inorganic nutrients. In this essay, we suggest the ways these metabolites might affect microbial communities and ultimately agricultural productivity in two specific scenarios: firstly, in the biocontrol of beneficial and pathogenic fungi in increasingly arid crop soils and, secondly, through promotion of phosphorus bioavailability and sustainable fertilizer use. We conclude with specific proposals for future research.
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Affiliation(s)
- Kurt M Dahlstrom
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Darcy L McRose
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - Dianne K Newman
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
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14
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Rasheed MU, Julkunen-Tiitto R, Kivimäenpää M, Riikonen J, Kasurinen A. Responses of soil-grown Scots pine seedlings to experimental warming, moderate nitrogen addition and bark herbivory in a three-year field experiment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 733:139110. [PMID: 32447078 DOI: 10.1016/j.scitotenv.2020.139110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/21/2020] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
Increased soil nitrogen (N), warming and bark herbivory all are expected to affect boreal forests in the future. We studied the effects of warming (0.5 °C and 4.0 °C above ambient air and soil temperature, respectively), moderate N addition (30 kg N ha-1 y-1) and bark herbivory by large pine weevil (Hylobius abietis L.) on soil-grown Scots pine (Pinus sylvestris L.) seedlings in a three-year (2014-2016) open-air field experiment. Seedling dry mass, root mass fraction (RMF), root morphology, mycorrhizal colonization, mycorrhizal morphotypes, root phenolics and microbial abundance in the rhizosphere area were studied. We observed that both moderate N addition and warming showed interactive effects, and generally improved seedling growth after the three consecutive growing seasons. However, soil dryness was increased due to combined warming and N addition treatment in 2016, and it seemed to limit the shoot growth stimulation as well as increase the dependence of the non-herbivory seedlings on the mycorrhizas. Moderate N addition generally reduced herbivory damage intensity and increased RMF. It also decreased total mycorrhizal colonization rate and increased SRL of the seedlings in 2016, but only in the absence of other factors. In 2016, herbivory affected soil exploration efficiency and mycorrhizal colonization without other factors, and had a tendency to increase root phenolics. There were only minor effects of N addition and herbivory on soil microbial abundances. We conclude that warming and N addition to soil may increase growth in young Scots pine if soil drought or herbivory do not start to limit it; and that in young Scots pine stands moderate bark herbivory are likely to affect roots more than shoots.
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Affiliation(s)
- M U Rasheed
- Department of Environmental and Biological Sciences, University of Eastern Finland, P. O. Box 1627, FI-70211 Kuopio, Finland.
| | - R Julkunen-Tiitto
- Department of Environmental and Biological Sciences, University of Eastern Finland, P. O. Box 111, FI-80101 Joensuu, Finland
| | - M Kivimäenpää
- Department of Environmental and Biological Sciences, University of Eastern Finland, P. O. Box 1627, FI-70211 Kuopio, Finland
| | - J Riikonen
- Natural Resources Institute Finland (Luke), Neulaniementie 5, FI-70200 Kuopio, Finland
| | - A Kasurinen
- Department of Environmental and Biological Sciences, University of Eastern Finland, P. O. Box 1627, FI-70211 Kuopio, Finland
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15
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Facilitative priority effects drive parasite assembly under coinfection. Nat Ecol Evol 2020; 4:1510-1521. [PMID: 32868915 DOI: 10.1038/s41559-020-01289-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/22/2020] [Indexed: 12/14/2022]
Abstract
Host individuals are often coinfected with diverse parasite assemblages, resulting in complex interactions among parasites within hosts. Within hosts, priority effects occur when the infection sequence alters the outcome of interactions among parasites. Yet, the role of host immunity in this process remains poorly understood. We hypothesized that the host response to the first infection could generate priority effects among parasites, altering the assembly of later-arriving strains during epidemics. We tested this by infecting sentinel host genotypes of Plantago lanceolata with strains of the fungal parasite Podosphaera plantaginis and measuring susceptibility to subsequent infection during experimental and natural epidemics. In these experiments, prior infection by one strain often increased susceptibility to other strains, and these facilitative priority effects altered the structure of parasite assemblages, but this effect depended on host genotype, host population and parasite genotype. Thus, host genotype, spatial structure and priority effects among strains all independently altered parasite assembly. Using a fine-scale survey and sampling of infections on wild hosts in several populations, we then identified a signal of facilitative priority effects, which altered parasite assembly during natural epidemics. Together, these results provide evidence that within-host priority effects of early-arriving strains can drive parasite assembly, with implications for how strain diversity is spatially and temporally distributed during epidemics.
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16
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Nguyen DQ, Schneider D, Brinkmann N, Song B, Janz D, Schöning I, Daniel R, Pena R, Polle A. Soil and root nutrient chemistry structure root-associated fungal assemblages in temperate forests. Environ Microbiol 2020; 22:3081-3095. [PMID: 32383336 DOI: 10.1111/1462-2920.15037] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 04/19/2020] [Accepted: 04/21/2020] [Indexed: 12/12/2022]
Abstract
Root-associated fungi (RAF) link nutrient fluxes between soil and roots and thus play important roles in ecosystem functioning. To enhance our understanding of the factors that control RAF, we fitted statistical models to explain variation in RAF community structure using data from 150 temperate forest sites covering a broad range of environmental conditions and chemical root traits. We found that variation in RAF communities was related to both root traits (e.g., cations, carbohydrates, NO3 - ) and soil properties (pH, cations, moisture, C/N). The identified drivers were the combined result of distinct response patterns of fungal taxa (determined at the rank of orders) to biotic and abiotic factors. Our results support that RAF community variation is related to evolutionary adaptedness of fungal lineages and consequently, drivers of RAF communities are context-dependent.
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Affiliation(s)
- Dung Quang Nguyen
- Forest Botany and Tree Physiology, Büsgen-Institut, University of Göttingen, Göttingen, Büsgenweg 2, 37077, Germany.,Forest Protection Research Centre, Vietnamese Academy of Forest Sciences, Duc Thang Ward, Bac Tu Liem District, Hanoi, Vietnam
| | - Dominik Schneider
- Genomic and Applied Microbiology and Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, University of Göttingen, Göttingen, Grisebachstraße 8, 37077, Germany
| | - Nicole Brinkmann
- Forest Botany and Tree Physiology, Büsgen-Institut, University of Göttingen, Göttingen, Büsgenweg 2, 37077, Germany
| | - Bin Song
- Forest Botany and Tree Physiology, Büsgen-Institut, University of Göttingen, Göttingen, Büsgenweg 2, 37077, Germany
| | - Dennis Janz
- Forest Botany and Tree Physiology, Büsgen-Institut, University of Göttingen, Göttingen, Büsgenweg 2, 37077, Germany
| | - Ingo Schöning
- Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745 Jena, Germany
| | - Rolf Daniel
- Genomic and Applied Microbiology and Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, University of Göttingen, Göttingen, Grisebachstraße 8, 37077, Germany
| | - Rodica Pena
- Forest Botany and Tree Physiology, Büsgen-Institut, University of Göttingen, Göttingen, Büsgenweg 2, 37077, Germany
| | - Andrea Polle
- Forest Botany and Tree Physiology, Büsgen-Institut, University of Göttingen, Göttingen, Büsgenweg 2, 37077, Germany
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17
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Garcia MO, Templer PH, Sorensen PO, Sanders-DeMott R, Groffman PM, Bhatnagar JM. Soil Microbes Trade-Off Biogeochemical Cycling for Stress Tolerance Traits in Response to Year-Round Climate Change. Front Microbiol 2020; 11:616. [PMID: 32477275 PMCID: PMC7238748 DOI: 10.3389/fmicb.2020.00616] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/19/2020] [Indexed: 01/16/2023] Open
Abstract
Winter air temperatures are rising faster than summer air temperatures in high-latitude forests, increasing the frequency of soil freeze/thaw events in winter. To determine how climate warming and soil freeze/thaw cycles affect soil microbial communities and the ecosystem processes they drive, we leveraged the Climate Change across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest in the northeastern United States, where replicate field plots receive one of three climate treatments: warming (+5°C above ambient in the growing season), warming in the growing season + winter freeze/thaw cycles (+5°C above ambient +4 freeze/thaw cycles during winter), and no treatment. Soil samples were taken from plots at six time points throughout the growing season and subjected to amplicon (rDNA) and metagenome sequencing. We found that soil fungal and bacterial community composition were affected by changes in soil temperature, where the taxonomic composition of microbial communities shifted more with the combination of growing-season warming and increased frequency of soil freeze/thaw cycles in winter than with warming alone. Warming increased the relative abundance of brown rot fungi and plant pathogens but decreased that of arbuscular mycorrhizal fungi, all of which recovered under combined growing-season warming and soil freeze/thaw cycles in winter. The abundance of animal parasites increased significantly under combined warming and freeze/thaw cycles. We also found that warming and soil freeze/thaw cycles suppressed bacterial taxa with the genetic potential for carbon (i.e., cellulose) decomposition and soil nitrogen cycling, such as N fixation and the final steps of denitrification. These new soil communities had higher genetic capacity for stress tolerance and lower genetic capacity to grow or reproduce, relative to the communities exposed to warming in the growing season alone. Our observations suggest that initial suppression of biogeochemical cycling with year-round climate change may be linked to the emergence of taxa that trade-off growth for stress tolerance traits.
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Affiliation(s)
- Maria O. Garcia
- Department of Biology, Boston University, Boston, MA, United States
| | | | - Patrick O. Sorensen
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Rebecca Sanders-DeMott
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Peter M. Groffman
- Advanced Science Research Center at the Graduate Center, City University of New York, New York, NY, United States
- Cary Institute of Ecosystem Studies, Millbrook, NY, United States
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18
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Estimation of Fungal Diversity and Identification of Major Abiotic Drivers Influencing Fungal Richness and Communities in Northern Temperate and Boreal Quebec Forests. FORESTS 2019. [DOI: 10.3390/f10121096] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Fungi play important roles in forest ecosystems and understanding fungal diversity is crucial to address essential questions about species conservation and ecosystems management. Changes in fungal diversity can have severe impacts on ecosystem functionality. Unfortunately, little is known about fungal diversity in northern temperate and boreal forests, and we have yet to understand how abiotic variables shape fungal richness and composition. Our objectives were to make an overview of the fungal richness and the community composition in the region and identify their major abiotic drivers. We sampled 262 stands across the northern temperate and boreal Quebec forest located in the region of Abitibi-Témiscamingue, Mauricie, and Haute-Mauricie. At each site, we characterized fungal composition using Illumina sequencing, as well as several potential abiotic drivers (e.g., humus thickness, soil pH, vegetation cover, etc.). We tested effects of abiotic drivers on species richness using generalized linear models, while difference in fungal composition between stands was analyzed with permutational multivariate analysis of variance and beta-diversity partitioning analyses. Fungi from the order Agaricales, Helotiales, and Russulales were the most frequent and sites from the north of Abitibi-Témiscamingue showed the highest OTUs (Operational Taxonomic Unit) richness. Stand age and moss cover were the best predictors of fungal richness. On the other hand, the strongest drivers of fungal community structure were soil pH, average cumulative precipitation, and stand age, although much of community variance was left unexplained in our models. Overall, our regional metacommunity was characterized by high turnover rate, even when rare OTUs were removed. This may indicate strong environmental filtering by several unmeasured abiotic filters, or stronger than expected dispersal limitations in soil fungal communities. Our results show how difficult it can be to predict fungal community assembly even with high replication and efforts to include several biologically relevant explanatory variables.
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19
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Yang W, Zhang D, Cai X, Xia L, Luo Y, Cheng X, An S. Significant alterations in soil fungal communities along a chronosequence of Spartina alterniflora invasion in a Chinese Yellow Sea coastal wetland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 693:133548. [PMID: 31369894 DOI: 10.1016/j.scitotenv.2019.07.354] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/22/2019] [Accepted: 07/22/2019] [Indexed: 05/24/2023]
Abstract
Plant invasion typically alters the microbial communities of soils, which affects ecosystem carbon (C) and nitrogen (N) cycles. The responses of the soil fungal communities to plant invasion along its chronosequence remain poorly understood. For this study, we investigated variations in soil fungal communities through Illumina MiSeq sequencing analyses of the fungal internal transcribed spacer (ITS) region, and quantitative polymerase chain reaction (qPCR), along a chronosequence (i.e., 9-, 13-, 20- and 23-year-old) of invasive Spartina alterniflora. We compared these variations with those of bare flat in a Chinese Yellow Sea coastal wetland. Our results highlighted that the abundance of soil fungi, the number of operational taxonomic units (OTUs), species richness, and Shannon diversity indices for soil fungal communities were highest in 9-year-old S. alterniflora soil, which gradually declined along the invasion chronosequence. The relative abundance of copiotrophic Basidiomycota revealed significant decreasing trend, while the relative abundance of oligotrophic Ascomycota gradually increased along the S. alterniflora invasion chronosequence. The relative abundance of soil saprotrophic fungi (e.g., undefined saprotrophs) was gradually reduced while symbiotic fungi (e.g., ectomycorrhizal fungi) and pathotrophic fungi (e.g., plant and animal pathogens) progressively increased along the S. alterniflora invasion chronosequence. Our results suggested that S. alterniflora invasion significantly altered soil fungal abundance and diversity, community composition, trophic modes, and functional groups along a chronosequence, via substantially reduced soil litter inputs, and gradually decreased soil pH, moisture, and soil nutrient substrates along the invasion chronosequence, from 9 to 23 years. These changes in soil fungal communities, particularly their trophic modes and functional groups along the S. alterniflora invasion chronosequence could well impact the decomposition and accumulation of soil C and N, while potentially altering ecosystem C and N sinks in a Chinese Yellow Sea coastal wetland.
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Affiliation(s)
- Wen Yang
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, PR China.
| | - Di Zhang
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, PR China
| | - Xinwen Cai
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, PR China
| | - Lu Xia
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing 210023, PR China
| | - Yiqi Luo
- Center for Ecosystem Science and Society (Ecoss), Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Xiaoli Cheng
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, PR China.
| | - Shuqing An
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing 210023, PR China
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20
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Defrenne CE, Philpott TJ, Guichon SHA, Roach WJ, Pickles BJ, Simard SW. Shifts in Ectomycorrhizal Fungal Communities and Exploration Types Relate to the Environment and Fine-Root Traits Across Interior Douglas-Fir Forests of Western Canada. FRONTIERS IN PLANT SCIENCE 2019; 10:643. [PMID: 31191571 PMCID: PMC6547044 DOI: 10.3389/fpls.2019.00643] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 04/29/2019] [Indexed: 05/20/2023]
Abstract
Large-scale studies that examine the responses of ectomycorrhizal fungi across biogeographic gradients are necessary to assess their role in mediating current and predicted future alterations in forest ecosystem processes. We assessed the extent of environmental filtering on interior Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) ectomycorrhizal fungal communities across regional gradients in precipitation, temperature, and soil fertility in interior Douglas-fir dominated forests of western Canada. We also examined relationships between fine-root traits and mycorrhizal fungal exploration types by combining root and fungal trait measurements with next-generation sequencing. Temperature, precipitation, and soil C:N ratio affected fungal community dissimilarity and exploration type abundance but had no effect on α-diversity. Fungi with rhizomorphs (e.g., Piloderma sp.) or proteolytic abilities (e.g., Cortinarius sp.) dominated communities in warmer and less fertile environments. Ascomycetes (e.g., Cenococcum geophilum) or shorter distance explorers, which potentially cost the plant less C, were favored in colder/drier climates where soils were richer in total nitrogen. Environmental filtering of ectomycorrhizal fungal communities is potentially related to co-evolutionary history between Douglas-fir populations and fungal symbionts, suggesting success of interior Douglas-fir as climate changes may be dependent on maintaining strong associations with local communities of mycorrhizal fungi. No evidence for a link between root and fungal resource foraging strategies was found at the regional scale. This lack of evidence further supports the need for a mycorrhizal symbiosis framework that is independent of root trait frameworks, to aid in understanding belowground plant uptake strategies across environments.
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Affiliation(s)
- Camille E. Defrenne
- Department of Forest and Conservation Sciences, Faculty of Forestry, The University of British Columbia, Vancouver, BC, Canada
| | - Timothy J. Philpott
- Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Cariboo-Chilcotin Natural Resource District, Williams Lake, BC, Canada
| | - Shannon H. A. Guichon
- Stable Isotope Facility, Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, BC, Canada
| | - W. Jean Roach
- Skyline Forestry Consultants Ltd., Kamloops, BC, Canada
| | - Brian J. Pickles
- School of Biological Sciences, University of Reading, Reading, United Kingdom
| | - Suzanne W. Simard
- Department of Forest and Conservation Sciences, Faculty of Forestry, The University of British Columbia, Vancouver, BC, Canada
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21
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Andrew C, Büntgen U, Egli S, Senn‐Irlet B, Grytnes J, Heilmann‐Clausen J, Boddy L, Bässler C, Gange AC, Heegaard E, Høiland K, Kirk PM, Krisai‐Greilhüber I, Kuyper TW, Kauserud H. Open-source data reveal how collections-based fungal diversity is sensitive to global change. APPLICATIONS IN PLANT SCIENCES 2019; 7:e01227. [PMID: 30937219 PMCID: PMC6426159 DOI: 10.1002/aps3.1227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/29/2018] [Indexed: 05/30/2023]
Abstract
PREMISE OF THE STUDY Fungal diversity (richness) trends at large scales are in urgent need of investigation, especially through novel situations that combine long-term observational with environmental and remotely sensed open-source data. METHODS We modeled fungal richness, with collections-based records of saprotrophic (decaying) and ectomycorrhizal (plant mutualistic) fungi, using an array of environmental variables across geographical gradients from northern to central Europe. Temporal differences in covariables granted insight into the impacts of the shorter- versus longer-term environment on fungal richness. RESULTS Fungal richness varied significantly across different land-use types, with highest richness in forests and lowest in urban areas. Latitudinal trends supported a unimodal pattern in diversity across Europe. Temperature, both annual mean and range, was positively correlated with richness, indicating the importance of seasonality in increasing richness amounts. Precipitation seasonality notably affected saprotrophic fungal diversity (a unimodal relationship), as did daily precipitation of the collection day (negatively correlated). Ectomycorrhizal fungal richness differed from that of saprotrophs by being positively associated with tree species richness. DISCUSSION Our results demonstrate that fungal richness is strongly correlated with land use and climate conditions, especially concerning seasonality, and that ongoing global change processes will affect fungal richness patterns at large scales.
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Affiliation(s)
- Carrie Andrew
- Swiss Federal Research Institute WSLCH‐8903BirmensdorfSwitzerland
- Section for Genetics and Evolutionary Biology (EVOGENE)University of OsloBlindernveien 310316OsloNorway
| | - Ulf Büntgen
- Swiss Federal Research Institute WSLCH‐8903BirmensdorfSwitzerland
- Department of GeographyUniversity of CambridgeCB2 3ENCambridgeUnited Kingom
- Global Change Research Centre and Masaryk University613 00BrnoCzech Republic
| | - Simon Egli
- Swiss Federal Research Institute WSLCH‐8903BirmensdorfSwitzerland
| | | | - John‐Arvid Grytnes
- Department of Biological SciencesUniversity of BergenP.O. Box 7803N‐5020BergenNorway
| | - Jacob Heilmann‐Clausen
- Centre for Macroecology, Evolution and ClimateNatural History Museum of DenmarkUniversity of CopenhagenDK‐2100CopenhagenDenmark
| | - Lynne Boddy
- School of BiosciencesCardiff UniversityMuseum AvenueCardiffCF10 3AXUnited Kingdom
| | - Claus Bässler
- Bavarian Forest National ParkFreyunger Str. 294481GrafenauGermany
- Chair for Terrestrial EcologyTechnical University of MunichHans‐Carl‐von‐Carlowitz‐Platz 285354FreisingGermany
| | - Alan C. Gange
- School of Biological SciencesRoyal HollowayUniversity of LondonEghamSurreyTW20 0EXUnited Kingdom
| | - Einar Heegaard
- Forestry and Forest ResourcesNorwegian Institute of Bioeconomy ResearchFanaflaten 4N‐5244FanaNorway
| | - Klaus Høiland
- Section for Genetics and Evolutionary Biology (EVOGENE)University of OsloBlindernveien 310316OsloNorway
| | - Paul M. Kirk
- Mycology SectionJodrell LaboratoryRoyal Botanic GardenKew, RichmondSurreyTW9 3DSUnited Kingdom
| | | | - Thomas W. Kuyper
- Department of Soil QualityWageningen UniversityP.O. Box 476700 AAWageningenThe Netherlands
| | - Håvard Kauserud
- Section for Genetics and Evolutionary Biology (EVOGENE)University of OsloBlindernveien 310316OsloNorway
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22
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Reis F, Valdiviesso T, Varela C, Tavares RM, Baptista P, Lino-Neto T. Ectomycorrhizal fungal diversity and community structure associated with cork oak in different landscapes. MYCORRHIZA 2018; 28:357-368. [PMID: 29654367 DOI: 10.1007/s00572-018-0832-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
Cork oak (Quercus suber L.) forests play an important ecological and economic role. Ectomycorrhizal fungi (ECMF) are key components for the sustainability and functioning of these ecosystems. The community structure and composition of ECMF associated with Q. suber in different landscapes of distinct Mediterranean bioclimate regions have not previously been compared. In this work, soil samples from cork oak forests residing in different bioclimates (arid, semi-arid, sub-humid, and humid) were collected and surveyed for ectomycorrhizal (ECM) root tips. A global analysis performed on 3565 ECM root tips revealed that the ECMF community is highly enriched in Russula, Tomentella, and Cenoccocum, which correspond to the ECMF genera that mainly contribute to community differences. The ECMF communities from the rainiest and the driest cork oak forests were distinct, with soils from the rainiest climates being more heterogeneous than those from the driest climates. The analyses of several abiotic factors on the ECMF communities revealed that bioclimate, precipitation, soil texture, and forest management strongly influenced ECMF structure. Shifts in ECMF with different hyphal exploration types were also detected among forests, with precipitation, forest system, and soil texture being the main drivers controlling their composition. Understanding the effects of environmental factors on the structuring of ECM communities could be the first step for promoting the sustainability of this threatened ecosystem.
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Affiliation(s)
- Francisca Reis
- BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Teresa Valdiviesso
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., UEIS-SAFSV, Av. da República Nova Oeiras, 2784-505, Oeiras, Portugal
| | - Carolina Varela
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., UEIS-SAFSV, Av. da República Nova Oeiras, 2784-505, Oeiras, Portugal
| | - Rui M Tavares
- BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Paula Baptista
- CIMO, School of Agriculture, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Teresa Lino-Neto
- BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
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