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Chen M, Yang J, Xue C, Tu T, Su Z, Feng H, Shi M, Zeng G, Zhang D, Qian X. Community composition of phytopathogenic fungi significantly influences ectomycorrhizal fungal communities during subtropical forest succession. Appl Microbiol Biotechnol 2024; 108:99. [PMID: 38204135 PMCID: PMC10781812 DOI: 10.1007/s00253-023-12992-5] [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: 01/27/2023] [Revised: 11/21/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
Ectomycorrhizal fungi (EMF) can form symbiotic relationships with plants, aiding in plant growth by providing access to nutrients and defense against phytopathogenic fungi. In this context, factors such as plant assemblages and soil properties can impact the interaction between EMF and phytopathogenic fungi in forest soil. However, there is little understanding of how these fungal interactions evolve as forests move through succession stages. In this study, we used high-throughput sequencing to investigate fungal communities in young, intermediate, and old subtropical forests. At the genus level, EMF communities were dominated by Sebacina, Russula, and Lactarius, while Mycena was the most abundant genus in pathogenic fungal communities. The relative abundances of EMF and phytopathogenic fungi in different stages showed no significant difference with the regulation of different factors. We discovered that interactions between phytopathogenic fungi and EMF maintained a dynamic balance under the influence of the differences in soil quality attributed to each forest successional stage. The community composition of phytopathogenic fungi is one of the strong drivers in shaping EMF communities over successions. In addition, the EMF diversity was significantly related to plant diversity, and these relationships varied among successional stages. Despite the regulation of various factors, the positive relationship between the diversity of phytopathogenic fungi and EMF remained unchanged. However, there is no significant difference in the ratio of the abundance of EMF and phytopathogenic fungi over the course of successions. These results will advance our understanding of the biodiversity-ecosystem functioning during forest succession. KEY POINTS: •Community composition of both EMF and phytopathogenic fungi changed significantly over forest succession. •Phytopathogenic fungi is a key driver in shaping EMF community. •The effect of plant Shannon's diversity on EMF communities changed during the forest aging process.
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Affiliation(s)
- Meirong Chen
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jiazhi Yang
- Guangdong Forestry Survey and Planning Institute, Guangzhou, China
| | - Chunquan Xue
- Guangdong Forestry Survey and Planning Institute, Guangzhou, China.
| | - Tieyao Tu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Zhiyao Su
- South China Agriculture University, Guangzhou, China
| | - Hanhua Feng
- Guangdong Forestry Survey and Planning Institute, Guangzhou, China
| | - Miaomiao Shi
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Gui Zeng
- College of Life Sciences, China West Normal University, Nanchong, China
| | - Dianxiang Zhang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
| | - Xin Qian
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China.
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Xie L, Palmroth S, Yin C, Oren R. Extramatrical mycelial biomass is mediated by fine root mass and ectomycorrhizal fungal community composition across tree species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175175. [PMID: 39111434 DOI: 10.1016/j.scitotenv.2024.175175] [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: 03/21/2024] [Revised: 07/16/2024] [Accepted: 07/29/2024] [Indexed: 08/10/2024]
Abstract
In many ecosystems, a large fraction of gross primary production is invested in mycorrhiza. Ectomycorrhizal (ECM) mycelium is involved in regulating soil carbon and nutrient cycling. However, little is known about how mycelial biomass, production and turnover differ depending on ECM fungal community composition and associated tree species. We quantified fine root biomass and length using soil cores, and mycelial traits (biomass, production, and turnover) using mesh-bags and ergosterol analysis, and identified ECM exploration types by Illumina MiSeq sequencing of four ECM-dominated tree species (Picea asperata, Larix gmelinii, Quercus aquifolioides and Betula albosinensis) in subalpine forest. The ECM fungal community composition separated between needle-leaved and broadleaved species, and between evergreen and deciduous species. The ratio of mycelial to fine root biomass was similar across the species regardless of genus-scale community composition and the relative abundance of exploration types. Compared to the other species, Q. aquifolioides displayed higher fine root biomass and mycelial biomass and production, dominated by contact-short exploration type. Mycelial turnover rate tended to be lowest in P. asperata, dominated by medium-long exploration type. Much higher production of mycelium and only slightly higher turnover rate in Q. aquifolioides suggests that its steady-state mycelial biomass would be higher than of the other species. Moreover, compared to the two deciduous species, with similar production but somewhat lower turnover rate, the standing crop of mycelium in P. asperata may stabilize at a higher value. Our findings, that exploration type may affect production and turnover, highlight the importance of characterizing ECM fungal communities by exploration types when estimating the contribution of mycelium biomass to forest carbon sink and storage.
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Affiliation(s)
- Lulu Xie
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, PR China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, PR China
| | - Sari Palmroth
- Nicholas School of the Environment & Pratt School of Engineering, Duke University, Durham, NC 27708, USA; Department of Forest Sciences, University of Helsinki, FI-00014, Finland
| | - Chunying Yin
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, PR China.
| | - Ram Oren
- Nicholas School of the Environment & Pratt School of Engineering, Duke University, Durham, NC 27708, USA; Department of Forest Sciences, University of Helsinki, FI-00014, Finland
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Xie L, Yang Y, Ma J, Lin G, Deng J, Robson TM, Peng H, Zhou L, Yu D, Wang QW. Variations in ectomycorrhizal exploration types parallel seedling fine root traits of two temperate tree species under extreme drought and contrasting solar radiation treatments. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39139140 DOI: 10.1111/pce.15093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 07/23/2024] [Accepted: 08/05/2024] [Indexed: 08/15/2024]
Abstract
Summary statementHigh solar radiation exacerbated the negative effects of extreme drought on plant growth and fine root traits. Ectomycorrhizae did not compensate for fine roots under drought stress. Fine roots biomass determined the role of ectomycorrhizal fungi, supporting the energy limitation hypothesis.
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Affiliation(s)
- Lulu Xie
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan, China
| | - Yanmeng Yang
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jingran Ma
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Guigang Lin
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Ecology, Northeast Forestry University, Harbin, China
- Northeast Asia Ecosystem Carbon Sink Research Center, School of Ecology, Northeast Forestry University, Harbin, China
| | - Jiaojiao Deng
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan, China
| | - Thomas M Robson
- Programme Lead for Woodland Ecology & Conservation, UK National School of Forestry, University of Cumbria, Ambleside, UK
- Organismal and Evolutionary Biology, Viikki Plant Science Centre (ViPS), University of Helsinki, Helsinki, Finland
| | - Huan Peng
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Li Zhou
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan, China
| | - Dapao Yu
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan, China
| | - Qing-Wei Wang
- CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan, China
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4
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Izumi H. Abundances of ectomycorrhizal exploration types show the type-dependent temporal dynamics over the seasons-a controlled growth container experiment. Int Microbiol 2024:10.1007/s10123-024-00573-z. [PMID: 39126446 DOI: 10.1007/s10123-024-00573-z] [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: 02/28/2024] [Revised: 07/04/2024] [Accepted: 08/01/2024] [Indexed: 08/12/2024]
Abstract
Ectomycorrhizas are ubiquitous symbiotic associations between host trees and soil fungi. While the seasonal changes of the taxonomic community structure of ectomycorrhizal fungi have been studied extensively, the temporal dynamics of ectomycorrhizal exploration types which have been proposed for elucidating the functional roles of ectomycorrhizas have not been fully examined. The purpose of the study is to test the hypothesis of whether the abundance of the exploration types in the hosts with different phenology shows different temporal patterns over the seasons. Two host species, deciduous Quercus acutissima and evergreen Q. glauca, were planted in growth containers with natural forest soils and were grown in single or combined species treatment, under similar environmental conditions and in shared soil spore banks of the ectomycorrhizal fungi. The ectomycorrhizal exploration types that occurred on these two host species in two different treatments were observed for two growing seasons. The observed exploration types, namely contact, short-distance, and long-distance type as well as the overall abundance of the ectomycorrhizas showed distinct temporal patterns although no specific response to the host seasonal phenology was found. The abundances of the contact type showed no relation to the seasons whereas those of the short- and the long-distance type increased with time. The formation of the long-distance type was strongly influenced by the host species treatments while that of the other two types was not so. Therefore, the different exploration types demonstrate distinct temporal patterns depending on the types but no specific seasonal responses.
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Affiliation(s)
- Hironari Izumi
- Microbial Ecology Unit, The Jurinji Buddhist Temple, 481 Oshiocho, Oharano, Nishikyo-Ku, Kyoto, 610-1133, Japan.
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5
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Piña Páez CG, Gervers KA, Martin JA, Tabima JF, Luoma DL, Spatafora JW. Suillus hypogaeus: First record of a truffle Suillus. Mycologia 2024:1-11. [PMID: 38976825 DOI: 10.1080/00275514.2024.2361518] [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: 09/22/2023] [Accepted: 05/24/2024] [Indexed: 07/10/2024]
Abstract
Suillus (order Boletales) is a diverse genus of epigeous, mushroom-forming fungi native to temperate forests across the Northern Hemisphere; however, some species are also present in areas where Pinaceae has been introduced in the Southern Hemisphere. Unlike the closely related genus Rhizopogon, there are no described hypogeous, sequestrate species of Suillus. Here, we describe Suillus hypogaeus, the first known species of the genus with hypogeous, sequestrate sporocarps. Collections were made on Marys Peak in Benton County, Oregon, USA, at an elevation of 800 m in forests dominated by Pseudotsuga menziesii var. menziesii. The peridium is white, quickly staining pink to purple-reddish where bruised or cut. The gleba is pale yellow when young, becoming purple with maturity, and the basidiospores are obovoid, light yellow in KOH, and amyloid in Melzer's reagent. Multilocus molecular phylogenetic analyses support the placement of S. hypogaeus among the Larix specialists in the spectabilis group of Suillus. Although Larix and Pseudotsuga are sister genera, Larix does not occur on Marys Peak or elsewhere in western Oregon. Suillus hypogaeus, therefore, represents both an independent origin of the hypogeous, sequestrate sporocarp within the Boletales and an independent host shift between Larix and Pseudotsuga within the genus Suillus.
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Affiliation(s)
- Carolina G Piña Páez
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331
| | - Kyle A Gervers
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331
| | - Jessica A Martin
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331
| | - Javier F Tabima
- Department of Biology, Clark University, Worcester, Massachusetts 01610
| | - Daniel L Luoma
- Department of Forest Ecosystems & Society, Oregon State University, Corvallis, Oregon 97331
| | - Joseph W Spatafora
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331
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Liu RC, Lin WR, Wang PH. Exploring mycorrhizal diversity in sympatric mycoheterotrophic plants: a comparative study of Monotropastrum humile var. humile and M. humile var. glaberrimum. MYCORRHIZA 2024; 34:283-292. [PMID: 38918244 DOI: 10.1007/s00572-024-01158-4] [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: 01/11/2024] [Accepted: 06/11/2024] [Indexed: 06/27/2024]
Abstract
Mycoheterotrophic plants (MHPs) rely on their mycorrhizal fungus for carbon and nutrient supply, thus a shift in mycobionts may play a crucial role in speciation. This study aims to explore the mycorrhizal diversity of two closely related and sympatric fully MHPs, Monotropastrum humile var. humile (Mhh) and M. humile var. glaberrimum (Mhg), and determine their mycorrhizal associations. A total of 1,108,710 and 1,119,071 ectomycorrhizal fungal reads were obtained from 31 Mhh and 31 Mhg, and these were finally assigned to 227 and 202 operational taxonomic units, respectively. Results show that sympatric Mhh and Mhg are predominantly associated with different fungal genera in Russulaceae. Mhh is consistently associated with members of Russula, whereas Mhg is associated with members of Lactarius. Associating with different mycobionts and limited sharing of fungal partners might reduce the competition and contribute to their coexistence. The ectomycorrhizal fungal communities are significantly different among the five forests in both Mhh and Mhg. The distinct mycorrhizal specificity between Mhh and Mhg suggests the possibility of different mycobionts triggered ecological speciation between sympatric species.
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Affiliation(s)
- Ren-Cheng Liu
- Department of Life Science, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung, 407224, Taiwan
| | - Wan-Rou Lin
- Bioresource Collection and Research Center (BCRC), Food Industry Research and Development Institute (FIRDI), 331 Shih-Pin Road, Hsinchu, 300193, Taiwan.
| | - Pi-Han Wang
- Department of Life Science, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung, 407224, Taiwan.
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7
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Zhu YQ, Li XL, Zhao DX, Wei YL, Yuan HS. Four New Species of Tomentella (Thelephorales, Basidiomycota) from Subtropical Forests in Southwestern China. J Fungi (Basel) 2024; 10:440. [PMID: 39057325 PMCID: PMC11278398 DOI: 10.3390/jof10070440] [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: 05/20/2024] [Revised: 06/16/2024] [Accepted: 06/19/2024] [Indexed: 07/28/2024] Open
Abstract
Species of the basidiomycetous genus Tomentella are widely distributed throughout temperate forests. Numerous studies on the taxonomy and phylogeny of Tomentella have been conducted from the temperate zone in the Northern hemisphere, but few have been from subtropical forests. In this study, four new species, T. casiae, T. guiyangensis, T. olivaceomarginata and T. rotundata from the subtropical mixed forests of Southwestern China, are described and illustrated based on morphological characteristics and phylogenetic analyses of the internal transcribed spacer regions (ITS) and the large subunit of the nuclear ribosomal RNA gene (LSU). Molecular analyses using Maximum Likelihood and Bayesian analysis confirmed the phylogenetic positions of these four new species. Anatomical comparisons among the closely related species in phylogenetic and morphological features are discussed. Four new species could be distinguished by the characteristics of basidiocarps, the color of the hymenophoral surface, the size of the basidia, the shape of the basidiospores and some other features.
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Affiliation(s)
- Ya-Quan Zhu
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; (Y.-Q.Z.); (D.-X.Z.); (Y.-L.W.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue-Long Li
- Institute of Edible Fungi, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China;
| | - Dong-Xue Zhao
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; (Y.-Q.Z.); (D.-X.Z.); (Y.-L.W.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Lian Wei
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; (Y.-Q.Z.); (D.-X.Z.); (Y.-L.W.)
| | - Hai-Sheng Yuan
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; (Y.-Q.Z.); (D.-X.Z.); (Y.-L.W.)
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8
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Sharma N, Tapwal A. Mycorrhizal symbiosis in Taxus: a review. MYCORRHIZA 2024; 34:173-180. [PMID: 38643436 DOI: 10.1007/s00572-024-01148-6] [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: 02/18/2024] [Accepted: 04/15/2024] [Indexed: 04/22/2024]
Abstract
Taxus, a genus of conifers known for its medicinal significance, faces various conservation challenges with several species classified under different threat categories by the IUCN. The overharvesting of bark and leaves for the well-known chemotherapy drug paclitaxel has resulted in its population decline. Exploring the mycorrhizal relationship in Taxus is of utmost importance, as mycorrhizal fungi play pivotal roles in nutrition, growth, and ecological resilience. Taxus predominantly associates with arbuscular mycorrhizal fungi (AM), and reports suggest ectomycorrhizal (EM) or dual mycorrhizal associations as well. This review consolidates existing literature on mycorrhizal associations in Taxus species, focusing on structural, physiological, and molecular aspects. AM associations are well-documented in Taxus, influencing plant physiology and propagation. Conversely, EM associations remain relatively understudied, with limited evidence suggesting their occurrence. The review highlights the importance of further research to elucidate dual mycorrhizal associations in Taxus, emphasizing the need for detailed structural and physiological examinations to understand their impact on growth and survival.
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Affiliation(s)
- Neha Sharma
- ICFRE-Himalayan Forest Research Institute, Shimla, 171013, India.
| | - Ashwani Tapwal
- ICFRE-Himalayan Forest Research Institute, Shimla, 171013, India
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Prout JN, Williams A, Wanke A, Schornack S, Ton J, Field KJ. Mucoromycotina 'fine root endophytes': a new molecular model for plant-fungal mutualisms? TRENDS IN PLANT SCIENCE 2024; 29:650-661. [PMID: 38102045 DOI: 10.1016/j.tplants.2023.11.014] [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: 08/25/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 12/17/2023]
Abstract
The most studied plant-fungal symbioses to date are the interactions between plants and arbuscular mycorrhizal (AM) fungi of the Glomeromycotina clade. Advancements in phylogenetics and microbial community profiling have distinguished a group of symbiosis-forming fungi that resemble AM fungi as belonging instead to the Mucoromycotina. These enigmatic fungi are now known as Mucoromycotina 'fine root endophytes' and could provide a means to understand the origins of plant-fungal symbioses. Most of our knowledge of the mechanisms of fungal symbiosis comes from investigations using AM fungi. Here, we argue that inclusion of Mucoromycotina fine root endophytes in future studies will expand our understanding of the mechanisms, evolution, and ecology of plant-fungal symbioses.
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Affiliation(s)
- James N Prout
- Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
| | - Alex Williams
- Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
| | - Alan Wanke
- Sainsbury Laboratory, University of Cambridge, Cambridge CB2 1LR, UK
| | | | - Jurriaan Ton
- Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
| | - Katie J Field
- Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
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10
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Tang X, Yang J, Lin D, Lin H, Xiao X, Chen S, Huang Y, Qian X. Community assembly of ectomycorrhizal fungal communities in pure and mixed Pinus massoniana forests. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 362:121312. [PMID: 38824888 DOI: 10.1016/j.jenvman.2024.121312] [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: 01/06/2024] [Revised: 05/18/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
Ectomycorrhizal (EcM) fungi play an important role in nutrient cycling and community ecological dynamics and are widely acknowledged as important components of forest ecosystems. However, little information is available regarding EcM fungal community structure or the possible relationship between EcM fungi, soil properties, and forestry activities in Pinus massoniana forests. In this study, we evaluated soil properties, extracellular enzyme activities, and fungal diversity and community composition in root and soil samples from pure Pinus massoniana natural forests, pure P. massoniana plantations, and P. massoniana and Liquidambar gracilipes mixed forests. The mixed forest showed the highest EcM fungal diversity in both root and bulk soil samples. Community composition and co-occurrence network structures differed significantly between forest types. Variation in the EcM fungal community was significantly correlated with the activities of β-glucuronidase and β-1,4-N-acetylglucosaminidase, whereas non-EcM fungal community characteristics were significantly correlated with β-1,4-glucosidase and β-glucuronidase activities. Furthermore, stochastic processes predominantly drove the assembly of both EcM and non-EcM fungal communities, while deterministic processes exerted greater influence on soil fungal communities in mixed forests compared to pure forests. Our findings may inform a deeper understanding of how the assembly processes and environmental roles of subterranean fungal communities differ between mixed and pure plantations and may provide insights for how to promote forest sustainability in subtropical areas.
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Affiliation(s)
- Xinghao Tang
- Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fujian Academy of Forestry Sciences, Fuzhou, 350012, China
| | - Juanjuan Yang
- Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Danhua Lin
- Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Huazhang Lin
- Fujian Datian Taoyuan State-owned Forest Farm, Sanming, 366199, China
| | - Xiangxi Xiao
- Fujian Academy of Forestry Sciences, Fuzhou, 350012, China
| | - Sensen Chen
- Fujian Datian Taoyuan State-owned Forest Farm, Sanming, 366199, China
| | - Yunpeng Huang
- Fujian Academy of Forestry Sciences, Fuzhou, 350012, China
| | - Xin Qian
- Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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11
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Michaud TJ, Pearse IS, Kauserud H, Andrew CJ, Kennedy PG. Mast seeding in European beech (Fagus sylvatica L.) is associated with reduced fungal sporocarp production and community diversity. Ecol Lett 2024; 27:e14460. [PMID: 38877759 DOI: 10.1111/ele.14460] [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: 01/30/2024] [Revised: 05/21/2024] [Accepted: 05/23/2024] [Indexed: 06/16/2024]
Abstract
Mast seeding is a well-documented phenomenon across diverse forest ecosystems. While its effect on aboveground food webs has been thoroughly studied, how it impacts the soil fungi that drive soil carbon and nutrient cycling has not yet been explored. To evaluate the relationship between mast seeding and fungal resource availability, we paired a Swiss 29-year fungal sporocarp census with contemporaneous seed production for European beech (Fagus sylvatica L.). On average, mast seeding was associated with a 55% reduction in sporocarp production and a compositional community shift towards drought-tolerant taxa across both ectomycorrhizal and saprotrophic guilds. Among ectomycorrhizal fungi, traits associated with carbon cost did not explain species' sensitivity to seed production. Together, our results support a novel hypothesis that mast seeding limits annual resource availability and reproductive investment in soil fungi, creating an ecosystem 'rhythm' to forest processes that is synchronized above- and belowground.
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Affiliation(s)
- Talia J Michaud
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, USA
| | - Ian S Pearse
- U.S. Geological Survey, Fort Collins Science Center, Fort Collins, Colorado, USA
| | | | | | - Peter G Kennedy
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, USA
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12
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Rähn E, Lutter R, Riit T, Tullus T, Tullus A, Tedersoo L, Drenkhan R, Tullus H. Soil mycobiomes in native European aspen forests and hybrid aspen plantations have a similar fungal richness but different compositions, mainly driven by edaphic and floristic factors. Front Microbiol 2024; 15:1372938. [PMID: 38774505 PMCID: PMC11106484 DOI: 10.3389/fmicb.2024.1372938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 04/02/2024] [Indexed: 05/24/2024] Open
Abstract
Background The cultivation of short-rotation tree species on non-forest land is increasing due to the growing demand for woody biomass for the future bioeconomy and to mitigate climate change impacts. However, forest plantations are often seen as a trade-off between climate benefits and low biodiversity. The diversity and composition of soil fungal biota in plantations of hybrid aspen, one of the most planted tree species for short-rotation forestry in Northern Europe, are poorly studied. Methods The goal of this study was to obtain baseline knowledge about the soil fungal biota and the edaphic, floristic and management factors that drive fungal richness and communities in 18-year-old hybrid aspen plantations on former agricultural soils and compare the fungal biota with those of European aspen stands on native forest land in a 130-year chronosequence. Sites were categorized as hybrid aspen (17-18-year-old plantations) and native aspen stands of three age classes (8-29, 30-55, and 65-131-year-old stands). High-throughput sequencing was applied to soil samples to investigate fungal diversity and assemblages. Results Native aspen forests showed a higher ectomycorrhizal (EcM) fungal OTU richness than plantations, regardless of forest age. Short-distance type EcM genera dominated in both plantations and forests. The richness of saprotrophic fungi was similar between native forest and plantation sites and was highest in the middle-aged class (30-55-year-old stands) in the native aspen stands. The fungal communities of native forests and plantations were significantly different. Community composition varied more, and the natural forest sites were more diverse than the relatively homogeneous plantations. Soil pH was the best explanatory variable to describe soil fungal communities in hybrid aspen stands. Soil fungal community composition did not show any clear patterns between the age classes of native aspen stands. Conclusion We conclude that edaphic factors are more important in describing fungal communities in both native aspen forest sites and hybrid aspen plantation sites than forest thinning, age, or former land use for plantations. Although first-generation hybrid aspen plantations and native forests are similar in overall fungal diversity, their taxonomic and functional composition is strikingly different. Therefore, hybrid aspen plantations can be used to reduce felling pressure on native forests; however, our knowledge is still insufficient to conclude that plantations could replace native aspen forests from the soil biodiversity perspective.
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Affiliation(s)
- Elisabeth Rähn
- Chair of Silviculture and Forest Ecology, Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu, Estonia
| | - Reimo Lutter
- Chair of Silviculture and Forest Ecology, Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu, Estonia
| | - Taavi Riit
- Chair of Silviculture and Forest Ecology, Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu, Estonia
| | - Tea Tullus
- Chair of Silviculture and Forest Ecology, Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu, Estonia
| | - Arvo Tullus
- Department of Botany, Institute of Ecology and Earth Sciences, Faculty of Science and Technology, University of Tartu, Tartu, Estonia
| | - Leho Tedersoo
- Mycology and Microbiology Center, University of Tartu, Tartu, Estonia
| | - Rein Drenkhan
- Chair of Silviculture and Forest Ecology, Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu, Estonia
| | - Hardi Tullus
- Chair of Silviculture and Forest Ecology, Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu, Estonia
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13
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Lofgren L, Nguyen NH, Kennedy P, Pérez-Pazos E, Fletcher J, Liao HL, Wang H, Zhang K, Ruytinx J, Smith AH, Ke YH, Cotter HVT, Engwall E, Hameed KM, Vilgalys R, Branco S. Suillus: an emerging model for the study of ectomycorrhizal ecology and evolution. THE NEW PHYTOLOGIST 2024; 242:1448-1475. [PMID: 38581203 PMCID: PMC11045321 DOI: 10.1111/nph.19700] [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: 07/28/2023] [Accepted: 03/07/2024] [Indexed: 04/08/2024]
Abstract
Research on mycorrhizal symbiosis has been slowed by a lack of established study systems. To address this challenge, we have been developing Suillus, a widespread ecologically and economically relevant fungal genus primarily associated with the plant family Pinaceae, into a model system for studying ectomycorrhizal (ECM) associations. Over the last decade, we have compiled extensive genomic resources, culture libraries, a phenotype database, and protocols for manipulating Suillus fungi with and without their tree partners. Our efforts have already resulted in a large number of publicly available genomes, transcriptomes, and respective annotations, as well as advances in our understanding of mycorrhizal partner specificity and host communication, fungal and plant nutrition, environmental adaptation, soil nutrient cycling, interspecific competition, and biological invasions. Here, we highlight the most significant recent findings enabled by Suillus, present a suite of protocols for working with the genus, and discuss how Suillus is emerging as an important model to elucidate the ecology and evolution of ECM interactions.
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Affiliation(s)
- Lotus Lofgren
- Department of Biology, Duke University, 130 Science Dr., Durham, NC 27708, USA
| | - Nhu H. Nguyen
- Department of Tropical Plant and Soil Sciences, University of Hawai‘i at Māno, 3190 Maile Way, Honolulu, HI 96822, USA
| | - Peter Kennedy
- Department of Plant and Microbial Biology, University of Minnesota, 1475 Gortner Ave, Saint Paul, MN 55108, USA
- Department of Ecology, Evolution and Behavior, University of Minnesota, 1475 Gortner Ave, Saint Paul, MN 55108, USA
| | - Eduardo Pérez-Pazos
- Department of Ecology, Evolution and Behavior, University of Minnesota, 1475 Gortner Ave, Saint Paul, MN 55108, USA
| | - Jessica Fletcher
- Department of Integrative Biology, University of Colorado Denver 1151 Arapahoe St, SI 2071, Denver, CO 80204, USA
| | - Hui-Ling Liao
- North Florida Research and Education Center, University of Florida, 155 Research Rd Quincy, FL 3235, USA
- Department of Soil, Water and Ecosystem Sciences, University of Florida, 1692 McCarty Dr, Room 2181, Building A, Gainesville, FL 32611, USA
| | - Haihua Wang
- North Florida Research and Education Center, University of Florida, 155 Research Rd Quincy, FL 3235, USA
- Department of Soil, Water and Ecosystem Sciences, University of Florida, 1692 McCarty Dr, Room 2181, Building A, Gainesville, FL 32611, USA
| | - Kaile Zhang
- North Florida Research and Education Center, University of Florida, 155 Research Rd Quincy, FL 3235, USA
| | - Joske Ruytinx
- Research Group of Microbiology and Plant Genetics, Department of Bioengineering Sciences, Vrije Universiteit Brussel, 1050 Brussels, Belgium, USA
| | - Alexander H. Smith
- Department of Integrative Biology, University of Colorado Denver 1151 Arapahoe St, SI 2071, Denver, CO 80204, USA
| | - Yi-Hong Ke
- Department of Ecology and Evolutionary Biology, University of Michigan, 1105 N University Ave, Ann Arbor, MI 48109, USA
| | - H. Van T. Cotter
- University of North Carolina at Chapel Hill Herbarium, 120 South Road, Chapel Hill, NC 27599, USA
| | - Eiona Engwall
- Department of Biology, University of North Carolina at Chapel Hill, 120 South Road, Chapel Hill, NC 27599, USA
| | - Khalid M. Hameed
- Department of Biology, Duke University, 130 Science Dr., Durham, NC 27708, USA
| | - Rytas Vilgalys
- Department of Biology, Duke University, 130 Science Dr., Durham, NC 27708, USA
| | - Sara Branco
- Department of Integrative Biology, University of Colorado Denver 1151 Arapahoe St, SI 2071, Denver, CO 80204, USA
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14
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Plett KL, Wojtalewicz D, Anderson IC, Plett JM. Fungal metabolism and free amino acid content may predict nitrogen transfer to the host plant in the ectomycorrhizal relationship between Pisolithus spp. and Eucalyptus grandis. THE NEW PHYTOLOGIST 2024; 242:1589-1602. [PMID: 37974494 DOI: 10.1111/nph.19400] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 10/16/2023] [Indexed: 11/19/2023]
Abstract
Ectomycorrhizal (ECM) fungi are crucial for tree nitrogen (N) nutrition; however, mechanisms governing N transfer from fungal tissues to the host plant are not well understood. ECM fungal isolates, even from the same species, vary considerably in their ability to support tree N nutrition, resulting in a range of often unpredictable symbiotic outcomes. In this study, we used isotopic labelling to quantify the transfer of N to the plant host by isolates from the ECM genus Pisolithus, known to have significant variability in colonisation and transfer of nutrients to a host. We considered the metabolic fate of N acquired by the fungi and found that the percentage of plant N acquired through symbiosis significantly correlated to the concentration of free amino acids in ECM extra-radical mycelium. Transcriptomic analyses complemented these findings with isolates having high amino acid content and N transfer showing increased expression of genes related to amino acid transport and catabolic pathways. These results suggest that fungal N metabolism impacts N transfer to the host plant in this interaction and that relative N transfer may be possible to predict through basic biochemical analyses.
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Affiliation(s)
- Krista L Plett
- NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle, NSW, 2568, Australia
| | - Dominika Wojtalewicz
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, 2753, Australia
| | - Ian C Anderson
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, 2753, Australia
| | - Jonathan M Plett
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, 2753, Australia
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Vizzini A, Alvarado P, Consiglio G, Marchetti M, Xu J. Family matters inside the order Agaricales: systematic reorganization and classification of incertae sedis clitocyboid, pleurotoid and tricholomatoid taxa based on an updated 6-gene phylogeny. Stud Mycol 2024; 107:67-148. [PMID: 38600959 PMCID: PMC11003440 DOI: 10.3114/sim.2024.107.02] [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: 07/28/2023] [Accepted: 12/17/2023] [Indexed: 04/12/2024] Open
Abstract
The phylogenetic position of several clitocyboid/pleurotoid/tricholomatoid genera previously considered incertae sedis is here resolved using an updated 6-gene dataset of Agaricales including newly sequenced lineages and more complete data from those already analyzed before. Results allowed to infer new phylogenetic relationships, and propose taxonomic novelties to accommodate them, including up to ten new families and a new suborder. Giacomia (for which a new species from China is here described) forms a monophyletic clade with Melanoleuca (Melanoleucaceae) nested inside suborder Pluteineae, together with the families Pluteaceae, Amanitaceae (including Leucocortinarius), Limnoperdaceae and Volvariellaceae. The recently described family Asproinocybaceae is shown to be a later synonym of Lyophyllaceae (which includes also Omphaliaster and Trichocybe) within suborder Tricholomatineae. The families Biannulariaceae, Callistosporiaceae, Clitocybaceae, Fayodiaceae, Macrocystidiaceae (which includes Pseudoclitopilus), Entolomataceae, Pseudoclitocybaceae (which includes Aspropaxillus), Omphalinaceae (Infundibulicybe and Omphalina) and the new families Paralepistaceae and Pseudoomphalinaceae belong also to Tricholomatineae. The delimitation of the suborder Pleurotineae (= Schizophyllineae) is discussed and revised, accepting five distinct families within it, viz. Pleurotaceae, Cyphellopsidaceae, Fistulinaceae, Resupinataceae and Schizophyllaceae. The recently proposed suborder Phyllotopsidineae (= Sarcomyxineae) is found to encompass the families Aphroditeolaceae, Pterulaceae, Phyllotopsidaceae, Radulomycetaceae, Sarcomyxaceae (which includes Tectella), and Stephanosporaceae, all of them unrelated to Pleurotaceae (suborder Pleurotineae) or Typhulaceae (suborder Typhulineae). The new family Xeromphalinaceae, encompassing the genera Xeromphalina and Heimiomyces, is proposed within Marasmiineae. The suborder Hygrophorineae is here reorganized into the families Hygrophoraceae, Cantharellulaceae, Cuphophyllaceae, Hygrocybaceae and Lichenomphaliaceae, to homogenize the taxonomic rank of the main clades inside all suborders of Agaricales. Finally, the genus Hygrophorocybe is shown to represent a distinct clade inside Cuphophyllaceae, and the new combination H. carolinensis is proposed. Taxonomic novelties: New suborder: Typhulineae Vizzini, Consiglio & P. Alvarado. New families: Aphroditeolaceae Vizzini, Consiglio & P. Alvarado, Melanoleucaceae Locq. ex Vizzini, Consiglio & P. Alvarado, Paralepistaceae Vizzini, Consiglio & P. Alvarado, Pseudoomphalinaceae Vizzini, Consiglio & P. Alvarado, Volvariellaceae Vizzini, Consiglio & P. Alvarado, Xeromphalinaceae Vizzini, Consiglio & P. Alvarado. New species: Giacomia sinensis J.Z. Xu. Stat. nov.: Cantharellulaceae (Lodge, Redhead, Norvell & Desjardin) Vizzini, Consiglio & P. Alvarado, Cuphophyllaceae (Z.M. He & Zhu L. Yang) Vizzini, Consiglio & P. Alvarado, Hygrocybaceae (Padamsee & Lodge) Vizzini, Consiglio & P. Alvarado, Lichenomphaliaceae (Lücking & Redhead) Vizzini, Consiglio & P. Alvarado. New combination: Hygrophorocybe carolinensis (H.E. Bigelow & Hesler) Vizzini, Consiglio & P. Alvarado. New synonyms: Sarcomyxineae Zhu L. Yang & G.S. Wang, Schizophyllineae Aime, Dentinger & Gaya, Asproinocybaceae T. Bau & G.F. Mou. Incertae sedis taxa placed at family level: Aphroditeola Redhead & Manfr. Binder, Giacomia Vizzini & Contu, Hygrophorocybe Vizzini & Contu, Leucocortinarius (J.E. Lange) Singer, Omphaliaster Lamoure, Pseudoclitopilus Vizzini & Contu, Resupinatus Nees ex Gray, Tectella Earle, Trichocybe Vizzini. New delimitations of taxa: Hygrophorineae Aime, Dentinger & Gaya, Phyllotopsidineae Zhu L. Yang & G.S. Wang, Pleurotineae Aime, Dentinger & Gaya, Pluteineae Aime, Dentinger & Gaya, Tricholomatineae Aime, Dentinger & Gaya. Resurrected taxa: Fayodiaceae Jülich, Resupinataceae Jülich. Citation: Vizzini A, Alvarado P, Consiglio G, Marchetti M, Xu J (2024). Family matters inside the order Agaricales: systematic reorganization and classification of incertae sedis clitocyboid, pleurotoid and tricholomatoid taxa based on an updated 6-gene phylogeny. Studies in Mycology 107: 67-148. doi: 10.3114/sim.2024.107.02.
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Affiliation(s)
- A. Vizzini
- Department of Life Sciences and Systems Biology, University of Torino, Viale P.A. Mattioli 25, 10125 Turin, Italy
- Institute for Sustainable Plant Protection (IPSP-SS Turin), C.N.R., Viale P.A. Mattioli, 25, 10125 Turin, Italy
| | - P. Alvarado
- ALVALAB, Dr. Fernando Bongera st., Severo Ochoa bldg. S1.04, 33006 Oviedo, Spain
| | - G. Consiglio
- Via Ronzani 61, Casalecchio di Reno, 40033 Bologna, Italy
| | | | - J. Xu
- Agricultural College, Jilin Agriculture Science and Technology University, Jilin 132101, Jilin Province, P. R. China
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16
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You YH, Park JM, Ku YB, Jeong TY, Lim K, Shin JH, Kim JS, Hong JW. Fungal Microbiome of Alive and Dead Korean Fir in its Native Habitats. MYCOBIOLOGY 2024; 52:68-84. [PMID: 38415173 PMCID: PMC10896143 DOI: 10.1080/12298093.2024.2307117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 01/15/2024] [Indexed: 02/29/2024]
Abstract
A rapid decline of Abies koreana has been reported in most of the natural alpine habitats in Korea. It is generally accepted that this phenomenon is due to climate change even though no clear conclusions have been drawn. Most research has focused on abiotic environmental factors, but studies on the relationships between A. koreana and soil fungal microbiomes are scarce. In this study, the rhizoplane and rhizosphere fungal communities in the alive and dead Korean fir trees from its three major natural habitats including Mt. Deogyu, Mt. Halla, and Mt. Jiri in Korea were investigated to identify specific soil fungal groups closely associated with A. koreana. Soil fungal diversity in each study site was significantly different from another based on the beta diversity calculations. Heat tree analysis at the genus level showed that Clavulina, Beauveria, and Tomentella were most abundant in the healthy trees probably by forming ectomycorrhizae with Korean fir growth and controlling pests and diseases. However, Calocera, Dacrymyces, Gyoerffyella, Hydnotrya, Microdochium, Hyaloscypha, Mycosymbioces, and Podospora were abundant in the dead trees. Our findings suggested that Clavulina, Beauveria, and Tomentella are the major players that could be considered in future reforestation programs to establish ectomycorrhizal networks and promote growth. These genera may have played a significant role in the survival and growth of A. koreana in its natural habitats. In particular, the genus Gyoerffyella may account for the death of the seedlings. Our work presented exploratory research on the specific fungal taxa associated with the status of A. koreana.
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Affiliation(s)
- Young-Hyun You
- Biological Resources Utilization Division, National Institute of Biological Resources, Incheon, Republic of Korea
| | - Jong Myong Park
- Water Quality Research Institute, Waterworks Headquarters Incheon Metropolitan City, Incheon, Republic of Korea
| | - Youn-Bong Ku
- Biological Resources Utilization Division, National Institute of Biological Resources, Incheon, Republic of Korea
| | - Tae-Yong Jeong
- Department of Environmental Science, College of Natural Sciences, Hankuk University of Foreign Studies, Yongin, Republic of Korea
| | - Kyeongmo Lim
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jin-Suk Kim
- Korea Fern Research Society, Seoul, Republic of Korea
| | - Ji Won Hong
- Department of Hydrogen and Renewable Energy, Kyungpook National University, Daegu, Republic of Korea
- Advanced Bio-resource Research Center, Kyungpook National University, Daegu, Republic of Korea
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17
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Mujic AB, Elliott TF, Stephens RB, Trappe JM, Kristol R, Sublett D, Smith ME. Rare but widespread: A systematic revision of the truffle-forming genera Destuntzia and Kjeldsenia and the formation of a new genus, Hosakaea. Mycologia 2024; 116:148-169. [PMID: 38064355 DOI: 10.1080/00275514.2023.2259786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/13/2023] [Indexed: 01/23/2024]
Abstract
Here we present the results of taxonomic and systematic study of the rare truffle-forming genera Destuntzia and Kjeldsenia. Truffle-forming fungi are difficult to study due to their reduced morphological features and their cryptic, hypogeous fruiting habits. The rare occurrence of Destuntzia and Kjeldsenia further compounds these difficulties due to the lack of adequate material for study. Recent forays in North Carolina and Tennessee recovered new specimens of another rarely collected fungus, Octaviania purpurea. Morphological and phylogenetic analysis revealed that Octaviania purpurea is a member of the genus Destuntzia, and this led us to reevaluate the taxonomic status and systematic relationships of other Destuntzia species. We performed a multilocus phylogenetic analysis of Destuntzia specimens deposited in public fungaria, including all available type material, and environmental sequences from animal scat and soil. Our analyses indicate that Destuntzia is a member of the family Claustulaceae within the order Phallales and is a close relative of Kjeldsenia. Results of our phylogenetic analysis infer that three species originally described in the genus Destuntzia are members of the genus Kjeldsenia. We propose three new combinations in Kjeldsenia to accommodate these species as well as a new combination in Destuntzia to accommodate Octaviania purpurea. We also describe a new genus in Claustulaceae, Hosakaea, to accommodate a closely affiliated species, Octaviania violascens. Finally, we transfer the genus Destunzia into the family Claustulaceae and emend the description of the family. The newly proposed combinations in Destuntzia and Kjeldsenia significantly expand the known geographic ranges of both genera. The data from metabarcode analysis of scat and soil also reveal several additional undescribed species that expand these ranges well beyond those suggested by basidiomata collections. Systematic placement of Destuntzia in the saprotrophic order Phallales suggests that this genus is not ectomycorrhizal, and the ecological implications of this systematic revision are discussed.
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Affiliation(s)
- Alija B Mujic
- Department of Biology, California State University, Fresno, California 93740
| | - Todd F Elliott
- Ecosystem Management, University of New England, Armidale, New South Wales 2351, Australia
| | - Ryan B Stephens
- Department of Biological Sciences, East Tennessee State University, Johnson City, Tennessee 37614
| | - James M Trappe
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331
| | - Rebecca Kristol
- Department of Plant Pathology, University of Florida, Fifield Hall, Gainesville, Florida 32611
| | - Danielle Sublett
- Department of Biology, California State University, Fresno, California 93740
| | - Matthew E Smith
- Department of Plant Pathology, University of Florida, Fifield Hall, Gainesville, Florida 32611
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18
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Sato H. The evolution of ectomycorrhizal symbiosis in the Late Cretaceous is a key driver of explosive diversification in Agaricomycetes. THE NEW PHYTOLOGIST 2024; 241:444-460. [PMID: 37292019 DOI: 10.1111/nph.19055] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/15/2023] [Indexed: 06/10/2023]
Abstract
Ectomycorrhizal (EcM) symbiosis, a ubiquitous plant-fungus interaction in forests, evolved in parallel in fungi. Why the evolution of EcM fungi did not necessarily increase ecological opportunities for explosive diversification remains unclear. This study aimed to reveal the driving mechanism of the evolutionary diversification in the fungal class Agaricomycetes, specifically by testing whether the evolution of EcM symbiosis in the Late Cretaceous increased ecological opportunities. The historical character transitions of trophic state and fruitbody form were estimated based on phylogenies inferred from fragments of 89 single-copy genes. Moreover, five analyses were used to estimate the net diversification rates (speciation rate minus extinction rate). The results indicate that the unidirectional evolution of EcM symbiosis occurred 27 times, ranging in date from the Early Triassic to the Early Paleogene. The increased diversification rates appeared to occur intensively at the stem of EcM fungal clades diverging in the Late Cretaceous, coinciding with the rapid diversification of EcM angiosperms. By contrast, the evolution of fruitbody form was not strongly linked with the increased diversification rates. These findings suggest that the evolution of EcM symbiosis in the Late Cretaceous, supposedly with coevolving EcM angiosperms, was the key drive of the explosive diversification in Agaricomycetes.
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Affiliation(s)
- Hirotoshi Sato
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo, Kyoto, 606-8501, Japan
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19
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Baranowska M, Behnke-Borowczyk J, Barzdajn W, Szmyt J, Korzeniewicz R, Łukowski A, Memišević-Hodžić M, Kartawik N, Kowalkowski W. Effects of nursery production methods on fungal community diversity within soil and roots of Abies alba Mill. Sci Rep 2023; 13:21284. [PMID: 38042872 PMCID: PMC10693611 DOI: 10.1038/s41598-023-48047-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 11/21/2023] [Indexed: 12/04/2023] Open
Abstract
The aim of this study was to elucidate how different nursery production methods influence the composition of and relationship between soil and root community levels of Abies alba. In the Międzylesie Forest District, we quantified the responses of samples of both community-level fine roots and surrounding soil to environmental changes evoked by various seedling production methods. Fungi levels were identified based on their ITS 1 region and 5.8 S rDNA component. Analysis was conducted using Illumina SBS technology, and the obtained sequences were compared with reference samples deposited in the UNITE. Chemical analysis of the soil was also performed. Different nursery production methods resulted in a strong decoupling in the responses of fungal community levels between soil and roots. Changes in growth conditions imposed by production methods were significant in determining species composition. We found differences in fungal communities among functional groups of samples. In the soil, the dominant species of mycorrhizal fungi were Tylospora asterophora, Amanita rubescens, and Russula ionochlora. Mycorrhizal fungi in roots included Tuber anniae, Thelephoraceae sp., and Acephala applanata. Specific soil substrate conditions significantly influenced fungal community composition, leading to an increase in abundance of mycorrhizal fungi, specifically T. anniae.
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Affiliation(s)
- Marlena Baranowska
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Jolanta Behnke-Borowczyk
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Władysław Barzdajn
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Janusz Szmyt
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Robert Korzeniewicz
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Adrian Łukowski
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Mirzeta Memišević-Hodžić
- Faculty of Forestry, University of Sarajevo, Zagrebačka 20, 71000, Sarajevo, Bosnia and Herzegovina
| | - Natalia Kartawik
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Wojciech Kowalkowski
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland.
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20
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Harder CB, Hesling E, Botnen SS, Lorberau KE, Dima B, von Bonsdorff-Salminen T, Niskanen T, Jarvis SG, Ouimette A, Hester A, Hobbie EA, Taylor AFS, Kauserud H. Mycena species can be opportunist-generalist plant root invaders. Environ Microbiol 2023; 25:1875-1893. [PMID: 37188366 DOI: 10.1111/1462-2920.16398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 04/27/2023] [Indexed: 05/17/2023]
Abstract
Traditional strict separation of fungi into ecological niches as mutualist, parasite or saprotroph is increasingly called into question. Sequences of assumed saprotrophs have been amplified from plant root interiors, and several saprotrophic genera can invade and interact with host plants in laboratory growth experiments. However, it is uncertain if root invasion by saprotrophic fungi is a widespread phenomenon and if laboratory interactions mirror field conditions. Here, we focused on the widespread and speciose saprotrophic genus Mycena and performed (1) a systematic survey of their occurrences (in ITS1/ITS2 datasets) in mycorrhizal roots of 10 plant species, and (2) an analysis of natural abundances of 13 C/15 N stable isotope signatures of Mycena basidiocarps from five field locations to examine their trophic status. We found that Mycena was the only saprotrophic genus consistently found in 9 out of 10 plant host roots, with no indication that the host roots were senescent or otherwise vulnerable. Furthermore, Mycena basidiocarps displayed isotopic signatures consistent with published 13 C/15 N profiles of both saprotrophic and mutualistic lifestyles, supporting earlier laboratory-based studies. We argue that Mycena are widespread latent invaders of healthy plant roots and that Mycena species may form a spectrum of interactions besides saprotrophy also in the field.
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Affiliation(s)
- Christoffer Bugge Harder
- Department of Biosciences, University of Oslo, Oslo, Norway
- Department of Microbial Ecology, Lund University, Lund, Sweden
- Department of Biology, Section of Terrestrial Ecology, University of Copenhagen, Copenhagen, Denmark
| | - Emily Hesling
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK
| | - Synnøve S Botnen
- Department of Biosciences, University of Oslo, Oslo, Norway
- Oslo Metropolitan University, Oslo, Norway
| | - Kelsey E Lorberau
- Department of Biosciences, University of Oslo, Oslo, Norway
- Department of Arctic and Marine Biology, UiT-The Arctic University of Norway, Tromsø, Norway
| | - Bálint Dima
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
- Botany Unit, Finnish Museum of Natural History LUOMUS, University of Helsinki, Helsinki, Finland
| | | | - Tuula Niskanen
- Botany Unit, Finnish Museum of Natural History LUOMUS, University of Helsinki, Helsinki, Finland
- Jodrell Laboratory, Royal Botanic Gardens, Kew, Surrey, UK
| | | | - Andrew Ouimette
- Earth Systems Research Center, University of New Hampshire, Durham, New Hampshire, USA
| | | | - Erik A Hobbie
- Earth Systems Research Center, University of New Hampshire, Durham, New Hampshire, USA
| | - Andy F S Taylor
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK
- The James Hutton Institute, Aberdeen, UK
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21
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Gómez-Espinoza J, Riquelme C, Romero-Villegas E, Ahumada-Rudolph R, Novoa V, Méndez P, Millar C, Fernández-Alarcón N, Garnica S, Rajchenberg M, Cabrera-Pardo JR. Diversity of Agaricomycetes in southern South America and their bioactive natural products. Nat Prod Res 2023:1-15. [PMID: 37661754 DOI: 10.1080/14786419.2023.2244126] [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: 05/05/2023] [Revised: 07/03/2023] [Accepted: 07/24/2023] [Indexed: 09/05/2023]
Abstract
Fungi have a unique metabolic plasticity allowing them to produce a wide range of natural products. Since the discovery of penicillin, an antibiotic of fungal origin, substantial efforts have been devoted globally to search for fungal-derived natural bioactive products. Andean region forests represent one of the few undisturbed ecosystems in the world with little human intervention. While these forests display a rich biological diversity, mycological and chemical studies in these environments have been scarce. This review aims to summarise all the efforts regarding the chemical or bioactivity analyses of Agaricomycetes (Basidiomycota) from southern South America environments. Overall, herein we report a total of 147 fungal species, 21 of them showing chemical characterisation and/or biological activity. In terms of chemical cores, furans, chlorinated phenol derivatives, polyenes, lactones, terpenes and himanimides have been reported. These natural products displayed a range of biological activities including antioxidant, antimicrobial, antifungal, neuroprotective and osteoclast-forming suppressing effects.
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Affiliation(s)
- Jonhatan Gómez-Espinoza
- Laboratorio de Química Aplicada y Sustentable (LabQAS), Departamento de Química, Universidad del Bío-Bío, Concepción, Chile
| | - Cristian Riquelme
- Programa de Doctorado en Ciencias mención Ecología y Evolución, Escuela de Graduados, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
- Laboratorio de Micología, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia, Chile
| | - Enzo Romero-Villegas
- Laboratorio de Química Aplicada y Sustentable (LabQAS), Departamento de Química, Universidad del Bío-Bío, Concepción, Chile
| | - Ramón Ahumada-Rudolph
- Laboratorio de Química Aplicada y Sustentable (LabQAS), Departamento de Química, Universidad del Bío-Bío, Concepción, Chile
| | - Vanessa Novoa
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica, Chile
| | - Paola Méndez
- Laboratorio de Química Aplicada y Sustentable (LabQAS), Departamento de Química, Universidad del Bío-Bío, Concepción, Chile
| | - Camila Millar
- Laboratorio de Química Aplicada y Sustentable (LabQAS), Departamento de Química, Universidad del Bío-Bío, Concepción, Chile
| | - Naomi Fernández-Alarcón
- Laboratorio de Química Aplicada y Sustentable (LabQAS), Departamento de Química, Universidad del Bío-Bío, Concepción, Chile
| | - Sigisfredo Garnica
- Laboratorio de Micología, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia, Chile
| | - Mario Rajchenberg
- Centro de Investigación y Extensión Forestal Andino Patagónico (CIEFAP), Chubut, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, (CONICET), Buenos Aires, Argentina
| | - Jaime R Cabrera-Pardo
- Laboratorio de Química Aplicada y Sustentable (LabQAS), Departamento de Química, Universidad del Bío-Bío, Concepción, Chile
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22
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Wen Z, Lin C, Xu X, Ma S, Peng Y, Sun Y, Tang B, Shi L. Ectomycorrhizal community associated with Cedrus deodara in four urban forests of Nantong in East China. FRONTIERS IN PLANT SCIENCE 2023; 14:1226720. [PMID: 37719211 PMCID: PMC10502312 DOI: 10.3389/fpls.2023.1226720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/08/2023] [Indexed: 09/19/2023]
Abstract
Ectomycorrhizal (ECM) fungi play fundamental roles in host plant growth and terrestrial ecosystems. Cedrus deodara is cultivated in several regions in China, has high ecological, economic and medicinal value, for its afforestation and providing timber and wood oil. Here, we investigated ECM colonization status of four urban C. deodara forests in Nantong, East China. We also characterized soil spore banks by conducting bioassay experiments using soils collected from these forests. In total, we identified 19 ECM fungal species, of which 13 species were found in mature forests and 9 species were identified in bioassay experiments, with only 3 species shared. Soil pH and available P content had significant effects on species occurrence in both mature trees and bioassay seedlings on local scales. ECM communities clearly (A = 0.391, p = 0.006) separated mature forests from spore banks. Thelephoracae was the richest family we detected associated with C. deodara, while Trichophaea sp. was the most dominant in mature forests, and Wilcoxina sp. was dominant in spore banks. ECM richness affected the growth of bioassay seedlings, especially after inoculation with 2 ECM species, promoting root growth, significantly (F = 3.028, p = 0.050), but it had no effects on shoots (F = 1.778, p = 0.177). No effect of inoculation rate was found on seedlings growth. To conserve this important tree species, the ECM fungi that are associated with it should be considered.
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Affiliation(s)
- Zhugui Wen
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng, China
| | - Chunyan Lin
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng, China
| | - Xiaoming Xu
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng, China
| | - Simiao Ma
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng, China
| | - Yue Peng
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng, China
| | - Yue Sun
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng, China
| | - Boping Tang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng, China
| | - Liang Shi
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
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23
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Zhao H, Dai YC, Wu F, Liu XY, Maurice S, Krutovsky KV, Pavlov IN, Lindner DL, Martin FM, Yuan Y. Insights into the Ecological Diversification of the Hymenochaetales based on Comparative Genomics and Phylogenomics With an Emphasis on Coltricia. Genome Biol Evol 2023; 15:evad136. [PMID: 37498334 PMCID: PMC10410303 DOI: 10.1093/gbe/evad136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/01/2023] [Accepted: 07/16/2023] [Indexed: 07/28/2023] Open
Abstract
To elucidate the genomic traits of ecological diversification in the Hymenochaetales, we sequenced 15 new genomes, with attention to ectomycorrhizal (EcM) Coltricia species. Together with published data, 32 genomes, including 31 Hymenochaetales and one outgroup, were comparatively analyzed in total. Compared with those of parasitic and saprophytic members, EcM species have significantly reduced number of plant cell wall degrading enzyme genes, and expanded transposable elements, genome sizes, small secreted proteins, and secreted proteases. EcM species still retain some of secreted carbohydrate-active enzymes (CAZymes) and have lost the key secreted CAZymes to degrade lignin and cellulose, while possess a strong capacity to degrade a microbial cell wall containing chitin and peptidoglycan. There were no significant differences in secreted CAZymes between fungi growing on gymnosperms and angiosperms, suggesting that the secreted CAZymes in the Hymenochaetales evolved before differentiation of host trees into gymnosperms and angiosperms. Nevertheless, parasitic and saprophytic species of the Hymenochaetales are very similar in many genome features, which reflect their close phylogenetic relationships both being white rot fungi. Phylogenomic and molecular clock analyses showed that the EcM genus Coltricia formed a clade located at the base of the Hymenochaetaceae and divergence time later than saprophytic species. And Coltricia remains one to two genes of AA2 family. These indicate that the ancestors of Coltricia appear to have originated from saprophytic ancestor with the ability to cause a white rot. This study provides new genomic data for EcM species and insights into the ecological diversification within the Hymenochaetales based on comparative genomics and phylogenomics analyses.
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Affiliation(s)
- Heng Zhao
- Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Yu-Cheng Dai
- Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Fang Wu
- Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Xiao-Yong Liu
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Sundy Maurice
- Section for Genetics and Evolutionary Biology (EVOGENE), Department of Biosciences, University of Oslo, Oslo, Norway
| | - Konstantin V Krutovsky
- Department of Forest Genetics and Forest Tree Breeding, Georg-August University of Göttingen, Göttingen, Germany
- Center for Integrated Breeding Research, George-August University of Göttingen, Göttingen, Germany
- Laboratory of Population Genetics, N. I. Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
- Laboratory of Forest Genomics, Department of Genomics and Bioinformatics, Genome Research and Education Center, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russia
- Scientific and Methodological Center, G. F. Morozov Voronezh State University of Forestry and Technologies, Voronezh, Russia
| | - Igor N Pavlov
- Mycology and Plant Pathology, V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russia
- Department of Chemical Technology of Wood and Biotechnology, Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russia
| | | | - Francis M Martin
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE-GrandEst-Nancy, Champenoux, France
| | - Yuan Yuan
- Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
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Fan Y, Xiang S, Wang J, Zhang X, Yu Z, Zhu S, Lv M, Bai L, Han L, Ma J, Wang Y. First report of the ectomycorrhizal fungal community associated with two herbaceous plants in Inner Mongolia, China. PeerJ 2023; 11:e15626. [PMID: 37465152 PMCID: PMC10351511 DOI: 10.7717/peerj.15626] [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: 12/21/2022] [Accepted: 06/02/2023] [Indexed: 07/20/2023] Open
Abstract
Ectomycorrhizal (EM) fungi play a vital role in ensuring plant health, plant diversity, and ecosystem function. However, the study on fungal diversity and community assembly of EM fungi associated with herbaceous plants remains poorly understood. Thus, in our study, Carex pediformis and Polygonum divaricatum in the subalpine meadow of central Inner Mongolia, China were selected for exploring EM fungal diversity and community assembly mechanisms by using llumina MiSeq sequencing of the fungal internal transcribed spacer 2 region (ITS2). We evaluated the impact of soil, climatic, and spatial variables on EM fungal diversity and community turnover. Deterministic vs. stochastic processes for EM fungal community assembly were quantified using β-Nearest taxon index scores. The results showed that a total of 70 EM fungal OTUs belonging to 21 lineages were identified, of which Tomentella-Thelephora, Helotiales1, Tricholoma, Inocybe, Wilcoxina were the most dominant EM fungal lineages. EM fungal communities were significantly different between the two herbaceous plants and among the two sampling sites, and this difference was mainly influenced by soil organic matter (OM) content and mean annual precipitation (MAP). The neutral community model (NCM) explained 45.7% of the variations in EM fungi community assembly. A total of 99.27% of the β-Nearest Taxa Index (βNTI) value was between -2 and 2. These results suggest that the dominant role of stochastic processes in shaping EM fungal community assembly. In addition, RCbray values showed that ecological drift in stochastic processes dominantly determined community assembly of EM fungi. Overall, our study shed light on the EM fungal diversity and community assembly associated with herbaceous plants in the subalpine region of central Inner Mongolia for the first time, which provided a better understanding of the role of herbaceous EM fungi.
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Affiliation(s)
- Yongjun Fan
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, China
- Yinshanbeilu Grassland Eco-hydrology National Observation and Research Station, China Institute of Water Resources and Hydropower Research, Inner Mongolia, China
| | - Simin Xiang
- Faculty of Biological Science and technology, Baotou Teacher’s College, Baotou, Inner Mongolia, China
| | - Jing Wang
- Department of Civil Engineering, Ordos Institute Technology, Ordos, Inner Mongolia, China
| | - Xuan Zhang
- Faculty of Biological Science and technology, Baotou Teacher’s College, Baotou, Inner Mongolia, China
| | - Zhimin Yu
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, China
| | - Shupeng Zhu
- Faculty of Biological Science and technology, Baotou Teacher’s College, Baotou, Inner Mongolia, China
| | - Meng Lv
- Faculty of Biological Science and technology, Baotou Teacher’s College, Baotou, Inner Mongolia, China
| | - Lijun Bai
- Faculty of Biological Science and technology, Baotou Teacher’s College, Baotou, Inner Mongolia, China
| | - Luyu Han
- Faculty of Biological Science and technology, Baotou Teacher’s College, Baotou, Inner Mongolia, China
| | - Jianjun Ma
- College of Life Science, Lang Fang Normal University, Lang Fang, Hebei, China
| | - Yonglong Wang
- Faculty of Biological Science and technology, Baotou Teacher’s College, Baotou, Inner Mongolia, China
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25
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Sanz-Benito I, Stadler T, Mediavilla O, Hernández-Rodríguez M, Oria-de-Rueda JA, Dejene T, Geml J, Martín-Pinto P. Into the void: ECM fungal communities involved in the succession from rockroses to oak stands. Sci Rep 2023; 13:10085. [PMID: 37344617 DOI: 10.1038/s41598-023-37107-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 06/15/2023] [Indexed: 06/23/2023] Open
Abstract
Oak forests accompanied by Cistus species are a common landscape in the Mediterranean basin. It is argued that Cistus dominated fields serve as recruitment areas for Quercus seedlings, as they help in the transmission of the fungal community through vegetative succession in these ecosystems. To test these assumptions, we analyzed the fungal community in terms of its richness and composition, taking into account the effects of host (Oaks vs. Cistus) and forest structure, mainly based on age. Edaphic variables related to the different structures were also analyzed to examine how they evolve through succession and relate to shifts in the fungal community. No differences in fungal richness were observed between old Cistus stands and younger Quercus, while a brief increase in ECM richness was observed. Community composition also showed a greater overlap between old Cistus and young Quercus stands. We suggest that the most important step in fungal transfer from one host to another is the shift from the oldest Cistus fields to the youngest Quercus stands, with the genera Amanita, Cortinarius, Lactarius, Inocybe, Russula, and Tomentella probably playing a major role. In summary, our work has also revealed the network of fungal community structure in the succession of Cistus to Oak stands, it would suggest that the fungi share niches and significantly enhance the ecological setting of the transition from Cistus to Oak stands.
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Affiliation(s)
- Ignacio Sanz-Benito
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071, Palencia, Spain
| | - Tim Stadler
- University for Sustainable Development Eberswalde, Schickler Street 5, 16225, Eberswalde, Germany
| | - Olaya Mediavilla
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071, Palencia, Spain
- IDForest-Biotecnología Forestal Aplicada, Calle Curtidores 17, 34004, Palencia, Spain
| | - María Hernández-Rodríguez
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071, Palencia, Spain
- IDForest-Biotecnología Forestal Aplicada, Calle Curtidores 17, 34004, Palencia, Spain
| | - Juan Andrés Oria-de-Rueda
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071, Palencia, Spain
| | - Tatek Dejene
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071, Palencia, Spain
- Central Ethiopia Environment and Forestry Research Center, P.O. Box 30708, Addis Ababa, Ethiopia
| | - József Geml
- ELKH-EKKE Lendület Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Leányka U. 6, 3300, Eger, Hungary
| | - Pablo Martín-Pinto
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071, Palencia, Spain.
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26
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Duan D, Feng X, Wu N, Tian Z, Dong X, Liu H, Nan Z, Chen T. Drought Eliminates the Difference in Root Trait Plasticity and Mycorrhizal Responsiveness of Two Semiarid Grassland Species with Contrasting Root System. Int J Mol Sci 2023; 24:10262. [PMID: 37373408 DOI: 10.3390/ijms241210262] [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: 05/17/2023] [Revised: 06/04/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Root traits and arbuscular mycorrhizal (AM) fungi are important in determining the access of plants to soil resources. However, whether plants with different root systems (i.e., taproot vs. fibrous-root) exhibit different root trait plasticity and mycorrhizal responsiveness under drought remains largely unexplored. Tap-rooted Lespedeza davurica and fibrous-rooted Stipa bungeana were grown in monocultures in sterilized and live soils, followed by a drought treatment. Biomass, root traits, root colonization by AM fungi, and nutrient availability were evaluated. Drought decreased biomass and root diameter but increased the root:shoot ratio (RSR), specific root length (SRL), soil NO3--N, and available P for the two species. Under control and drought conditions, soil sterilization significantly increased the RSR, SRL, and soil NO3--N for L. davurica, but this only occurs under drought condition for S. bungeana. Soil sterilization significantly reduced AM fungal root colonization of both species, but drought significantly increased it in live soil. In water-abundant conditions, tap-rooted L. davurica may depend more on AM fungi than fibrous-rooted S. bungeana; however, under drought conditions, AM fungi are of equal importance in favoring both plant species to forage soil resources. These findings provide new insights for understanding the resource utilization strategies under climate change.
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Affiliation(s)
- Dongdong Duan
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
- Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu 610041, China
| | - Xiaoxuan Feng
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Nana Wu
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Zhen Tian
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Xin Dong
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Huining Liu
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Zhibiao Nan
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Tao Chen
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, China
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27
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Hawkins HJ, Cargill RIM, Van Nuland ME, Hagen SC, Field KJ, Sheldrake M, Soudzilovskaia NA, Kiers ET. Mycorrhizal mycelium as a global carbon pool. Curr Biol 2023; 33:R560-R573. [PMID: 37279689 DOI: 10.1016/j.cub.2023.02.027] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For more than 400 million years, mycorrhizal fungi and plants have formed partnerships that are crucial to the emergence and functioning of global ecosystems. The importance of these symbiotic fungi for plant nutrition is well established. However, the role of mycorrhizal fungi in transporting carbon into soil systems on a global scale remains under-explored. This is surprising given that ∼75% of terrestrial carbon is stored belowground and mycorrhizal fungi are stationed at a key entry point of carbon into soil food webs. Here, we analyze nearly 200 datasets to provide the first global quantitative estimates of carbon allocation from plants to the mycelium of mycorrhizal fungi. We estimate that global plant communities allocate 3.93 Gt CO2e per year to arbuscular mycorrhizal fungi, 9.07 Gt CO2e per year to ectomycorrhizal fungi, and 0.12 Gt CO2e per year to ericoid mycorrhizal fungi. Based on this estimate, 13.12 Gt of CO2e fixed by terrestrial plants is, at least temporarily, allocated to the underground mycelium of mycorrhizal fungi per year, equating to ∼36% of current annual CO2 emissions from fossil fuels. We explore the mechanisms by which mycorrhizal fungi affect soil carbon pools and identify approaches to increase our understanding of global carbon fluxes via plant-fungal pathways. Our estimates, although based on the best available evidence, are imperfect and should be interpreted with caution. Nonetheless, our estimations are conservative, and we argue that this work confirms the significant contribution made by mycorrhizal associations to global carbon dynamics. Our findings should motivate their inclusion both within global climate and carbon cycling models, and within conservation policy and practice.
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Affiliation(s)
- Heidi-Jayne Hawkins
- Department of Biological Sciences, University of Cape Town, Cape Town 7701, South Africa; Conservation International, Forrest House, Belmont Park, Cape Town 7700, South Africa.
| | - Rachael I M Cargill
- Amsterdam Institute for Life and Environment, Vrije Universiteit, De Boelelaan 1085, NL-1081 HV Amsterdam, The Netherlands; AMOLF, Science Park 102, Amsterdam, The Netherlands
| | - Michael E Van Nuland
- Amsterdam Institute for Life and Environment, Vrije Universiteit, De Boelelaan 1085, NL-1081 HV Amsterdam, The Netherlands; Society for the Protection of Underground Networks, SPUN, 3500 South DuPont Highway, Dover, DE 19901, USA
| | | | - Katie J Field
- Plants, Photosynthesis and Soil, School of Biosciences, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Merlin Sheldrake
- Amsterdam Institute for Life and Environment, Vrije Universiteit, De Boelelaan 1085, NL-1081 HV Amsterdam, The Netherlands; Society for the Protection of Underground Networks, SPUN, 3500 South DuPont Highway, Dover, DE 19901, USA
| | | | - E Toby Kiers
- Amsterdam Institute for Life and Environment, Vrije Universiteit, De Boelelaan 1085, NL-1081 HV Amsterdam, The Netherlands; Society for the Protection of Underground Networks, SPUN, 3500 South DuPont Highway, Dover, DE 19901, USA
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Hogan JA, Jusino MA, Smith ME, Corrales A, Song X, Hu YH, Yang J, Cao M, Valverde-Barrantes OJ, Baraloto C. Root-associated fungal communities are influenced more by soils than by plant-host root traits in a Chinese tropical forest. THE NEW PHYTOLOGIST 2023; 238:1849-1864. [PMID: 36808625 DOI: 10.1111/nph.18821] [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: 11/12/2022] [Accepted: 02/14/2023] [Indexed: 05/04/2023]
Abstract
Forest fungal communities are shaped by the interactions between host tree root systems and the associated soil conditions. We investigated how the soil environment, root morphological traits, and root chemistry influence root-inhabiting fungal communities in three tropical forest sites of varying successional status in Xishuangbanna, China. For 150 trees of 66 species, we measured root morphology and tissue chemistry. Tree species identity was confirmed by sequencing rbcL, and root-associated fungal (RAF) communities were determined using high-throughput ITS2 sequencing. Using distance-based redundancy analysis and hierarchical variation partitioning, we quantified the relative importance of two soil variables (site average total phosphorus and available phosphorus), four root traits (dry matter content, tissue density, specific tip abundance, and forks), and three root tissue elemental concentrations (nitrogen, calcium, and manganese) on RAF community dissimilarity. The root and soil environment collectively explained 23% of RAF compositional variation. Soil phosphorus explained 76% of that variation. Twenty fungal taxa differentiated RAF communities among the three sites. Soil phosphorus most strongly affects RAF assemblages in this tropical forest. Variation in root calcium and manganese concentrations and root morphology among tree hosts, principally an architectural trade-off between dense, highly branched vs less-dense, herringbone-type root systems, are important secondary determinants.
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Affiliation(s)
- J Aaron Hogan
- Department of Biological Sciences, Institute of Environment, Florida International University, Miami, FL, 33199, USA
| | - Michelle A Jusino
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32611, USA
- USDA Forest Service, Northern Research Station, Center for Forest Mycology Research, Madison, WI, 53726, USA
| | - Matthew E Smith
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32611, USA
| | - Adriana Corrales
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32611, USA
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, 111221, Colombia
| | - Xiaoyang Song
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, 666303, China
| | - Yue-Hua Hu
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, 666303, China
| | - Jie Yang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, 666303, China
| | - Min Cao
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, 666303, China
| | - Oscar J Valverde-Barrantes
- Department of Biological Sciences, Institute of Environment, Florida International University, Miami, FL, 33199, USA
| | - Christopher Baraloto
- Department of Biological Sciences, Institute of Environment, Florida International University, Miami, FL, 33199, USA
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Karlsen-Ayala E, Jusino MA, Gazis R, Smith ME. Habitat matters: The role of spore bank fungi in early seedling establishment of Florida slash pines. FUNGAL ECOL 2023. [DOI: 10.1016/j.funeco.2022.101210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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N. M. Furtado A, Leonardi M, Comandini O, Neves MA, C. Rinaldi A. Restinga ectomycorrhizae: a work in progress. F1000Res 2023; 12:317. [PMID: 37265684 PMCID: PMC10230178 DOI: 10.12688/f1000research.131558.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/13/2023] [Indexed: 06/03/2023] Open
Abstract
Background: The Brazilian Atlantic Forest is one of the most biodiverse terrestrial ecoregions of the world. Among its constituents, restinga vegetation makes a particular case, acting as a buffer zone between the oceans and the forest. Covering some 80% of Brazilian coastline (over 7,300 km in length), restinga is a harsh environment where plants and fungi interact in complex ways that just now are beginning to be unveiled. Ectomycorrhizal symbiosis, in particular, plays a so far ungauged and likely underestimated role. We recently described the morpho-anatomical and molecular features of the ectomycorrhizae formed by several basidiomycetous mycobionts on the host plant Guapira opposita, but the mycorrhizal biology of restinga is still largely unexplored. Here, we report new data on the ectomycorrhizal fungal symbionts of G. opposita, based on the collection of sporomata and ectomycorrhizal root tips in restinga stands occurring in southern Brazil. Methods: To obtain a broader view of restinga mycorrhizal and ecological potential, we compiled a comprehensive and up-to-date checklist of fungal species reported or supposed to establish ectomycorrhizae on restinga-inhabiting host plants, mainly on the basis of field observations. Results: Our list comprises some 726 records, 74 of which correspond to putative ectomycorrhizal taxa specifically associated with restinga. These include several members of Boletaceae, Amanita, Tomentella/ Thelephora, Russula/ Lactifluus, and Clavulina, as well as hypogeous fungi, like the recently described Longistriata flava. Conclusions: Our survey reveals a significant diversity of the restinga ectomycorrhizal mycobiota, indicating the importance of this symbiosis for the ecological functioning of a unique yet poorly known and threatened ecosystem.
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Affiliation(s)
- Ariadne N. M. Furtado
- Departamento de Botânica, Campus Universitário Reitor João David Ferreira Lima, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, 88040-960, Brazil
| | - Marco Leonardi
- Dipartimento di Scienze della Vita, della Salute e dell'Ambiente, Universita degli Studi dell'Aquila, L'Aquila, Abruzzo, I-67100, Italy
| | - Ornella Comandini
- Dipartimento di Scienze Biomediche, Universita degli Studi di Cagliari, Cagliari, Sardinia, I-09042, Italy
| | - Maria Alice Neves
- Departamento de Botânica, Campus Universitário Reitor João David Ferreira Lima, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, 88040-960, Brazil
| | - Andrea C. Rinaldi
- Dipartimento di Scienze Biomediche, Universita degli Studi di Cagliari, Cagliari, Sardinia, I-09042, Italy
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Martín-Pinto P, Fernández C, Santos M, Fontúrbel T, Oria-de-Rueda JA, Vázquez-Veloso A, Stadler T, Mediavilla O, Sanz-Benito I. Unaltered fungal community after fire prevention treatments over widespread Mediterranean rockroses (Halimium lasianthum). Sci Rep 2023; 13:608. [PMID: 36635464 PMCID: PMC9837117 DOI: 10.1038/s41598-023-27945-1] [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: 06/20/2022] [Accepted: 01/10/2023] [Indexed: 01/14/2023] Open
Abstract
Mediterranean ecosystems are frequently invaded by pyrophytic scrubs such as Halimium lasianthum that colonize areas traditionally used by livestock. A diverse fungal community is associated with this kind of vegetation, playing an important ecological role in these ecosystems. However, uncontrolled expansion of these shrubs considerably increases the risk of wildfires in these stands and, hence, fire-prevention treatments are needed. To investigate the long-term effects of two different forest-fire-prevention treatments on the soil fungal community, we analyzed these communities 9 years after prescribed burning or mechanical shredding were carried out in scrubland dominated by H. lasianthum. Neither of the fire-prevention treatments had a negative long-term effect on the abundance or richness of ectomycorrhizal fungi. However, saprotrophs and lichenized fungi experienced negative effects. Soil fertility significantly affected the distribution of fungi according to their functional groups, and pH was the most influential variable in terms of the distribution of edible species. Our findings indicate that forest management practices to prevent forest fires does not negatively affect the fungal community in the long-term, but for lichens and decomposers. Moreover, prescribed burning is suggested as a more economical way of reducing the risk of wildfires without affecting the ecology of the fungal community.
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Affiliation(s)
- Pablo Martín-Pinto
- Sustainable Forest Management Research Institute UVa-INIA, Avenida Madrid, S/N, 34004, Palencia, Spain. .,Department of Vegetal Production and Natural Resources, University of Valladolid, Avenida Madrid, S/N, 34004, Palencia, Spain.
| | - Cristina Fernández
- Centro de Investigación Forestal-Lourizán, Xunta de Galicia, P.O. Box. 127, 36080 Pontevedra, Spain
| | - María Santos
- Sustainable Forest Management Research Institute UVa-INIA, Avenida Madrid, S/N, 34004 Palencia, Spain
| | - Teresa Fontúrbel
- Centro de Investigación Forestal-Lourizán, Xunta de Galicia, P.O. Box. 127, 36080 Pontevedra, Spain
| | - Juan Andrés Oria-de-Rueda
- Sustainable Forest Management Research Institute UVa-INIA, Avenida Madrid, S/N, 34004 Palencia, Spain
| | - Aitor Vázquez-Veloso
- Sustainable Forest Management Research Institute UVa-INIA, Avenida Madrid, S/N, 34004 Palencia, Spain
| | - Tim Stadler
- University for Sustainable Development Eberswalde, Schickler Street 5, 16225 Eberswalde, Germany
| | - Olaya Mediavilla
- Sustainable Forest Management Research Institute UVa-INIA, Avenida Madrid, S/N, 34004 Palencia, Spain
| | - Ignacio Sanz-Benito
- Sustainable Forest Management Research Institute UVa-INIA, Avenida Madrid, S/N, 34004 Palencia, Spain
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Zhang X, Wang Y, Xu Y, Babalola BJ, Xiang S, Ma J, Su Y, Fan Y. Stochastic processes dominate community assembly of ectomycorrhizal fungi associated with Picea crassifolia in the Helan Mountains, China. Front Microbiol 2023; 13:1061819. [PMID: 36713171 PMCID: PMC9878330 DOI: 10.3389/fmicb.2022.1061819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/21/2022] [Indexed: 01/15/2023] Open
Abstract
Introduction Understanding the underlying mechanisms of microbial community assembly is a fundamental topic in microbial ecology. As an integral part of soil organisms, ectomycorrhizal (EM) fungi play vital roles in ecosystems. Picea crassifolia is an important pine species in the Helan Mountains in Inner Mongolia, China, with high ecological and economic values. However, studies of EM fungal diversity and mechanisms underlying community assembly on this pine species are limited. Methods In this study, we investigated EM fungal communities associated with P. crassifolia from 45 root samples across three sites in the Helan Mountains using Illumina Miseq sequencing of the fungal rDNA ITS2 region. Results A total of 166 EM fungal OTUs belonging to 24 lineages were identified, of which Sebacina and Tomentella-Thelephora were the most dominant lineages. Ordination analysis revealed that EM fungal communities were significantly different among the three sites. Site/fungus preference analysis showed that some abundant EM fungal OTUs preferred specific sites. Ecological process analysis implied that dispersal limitation and ecological drift in stochastic processes dominantly determined the community assembly of EM fungi. Discussion Our study indicates that P. crassifolia harbors a high EM fungal diversity and highlights the important role of the stochastic process in driving community assembly of mutualistic fungi associated with a single plant species in a semi-arid forest in northwest China.
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Affiliation(s)
- Xuan Zhang
- Faculty of Biological Science and Technology, Baotou Teacher's College, Baotou, China
| | - Yonglong Wang
- Faculty of Biological Science and Technology, Baotou Teacher's College, Baotou, China,*Correspondence: Yonglong Wang, ✉
| | - Ying Xu
- Faculty of Biological Science and Technology, Baotou Teacher's College, Baotou, China
| | - Busayo Joshua Babalola
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Simin Xiang
- Faculty of Biological Science and Technology, Baotou Teacher's College, Baotou, China
| | - Jianjun Ma
- College of Life Sciences, Langfang Normal University, Langfang, Hebei, China
| | - Yun Su
- Helan Mountains National Nature Reserve Administration of Inner Mongolia, Alxa League, China
| | - Yongjun Fan
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, China,Yongjun Fan, ✉
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Historical biogeography and diversification of ringless Amanita (section Vaginatae) support an African origin and suggest niche conservatism in the Americas. Mol Phylogenet Evol 2023; 178:107644. [PMID: 36243328 DOI: 10.1016/j.ympev.2022.107644] [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: 07/08/2022] [Revised: 10/04/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022]
Abstract
Ectomycorrhizal fungi (ECM) sustain nutrient recycling in most terrestrial ecosystems, yet we know little about what major biogeographical events gave rise to present-day diversity and distribution patterns. Given the strict relationship between some ECM lineages and their hosts, geographically well-sampled phylogenies are central to understanding major evolutionary processes of fungal biodiversity patterns. Here, we focus on Amanita sect. Vaginatae to address global diversity and distribution patterns. Ancestral-state-reconstruction based on a 4-gene timetree with over 200 species supports an African origin between the late Paleocene and the early Eocene (ca. 56 Ma). Major biogeographic "out-of-Africa" events include multiple dispersal events to Southeast Asia (ca. 45-21 Ma), Madagascar (ca. 18 Ma), and the current Amazonian basin (ca. 45-36 Ma), the last two likely trans-oceanic. Later events originating in Southeast Asia involve Nearctic dispersal to North America (ca. 20-5 Ma), Oceania (Australia and New Zealand; ca. 15 Ma), and Europe (ca. 10-5 Ma). Subsequent dispersals were also inferred from Southeast Asia to East Asia (ca. 4 Ma); from North America to East Asia (ca. 11-8 Ma), Southeast Asia (ca. 19-2 Ma), Northern Andes (ca. 15 Ma), and Europe (ca. 15-2 Ma), respectively; and from the Amazon to the Caribbean region (ca. 25-20 Ma). Finally, we detected a significant increase in the net diversification rates in the branch leading to most northern temperate species in addition to higher state-dependent diversification rates in temperate lineages, consistent with previous findings. These results suggest that species of sect. Vaginatae likely have higher dispersal ability and higher adaptability to new environments, in particular compared to those of its sister clade, sect. Caesareae. Overall, the much wider distribution of A. sect. Vaginatae, from pan-tropical to pan-arctic, provides a unique window to understanding niche conservatism across a species-rich clade of ECM fungi.
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Jörgensen K, Clemmensen KE, Wallander H, Lindahl BD. Do ectomycorrhizal exploration types reflect mycelial foraging strategies? THE NEW PHYTOLOGIST 2023; 237:576-584. [PMID: 36271619 PMCID: PMC10098516 DOI: 10.1111/nph.18566] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/01/2022] [Indexed: 05/19/2023]
Abstract
Ectomycorrhizal exploration types are commonly assumed to denote spatial foraging patterns and resource-related niches of extraradical mycelia. However, empirical evidence of the consistency of foraging strategies within exploration types is lacking. Here, we analysed ectomycorrhizal foraging patterns by incubating root-excluding ingrowth mesh bags filled with six different substrates in mature Picea abies forests. High-throughput sequencing was used to characterise ectomycorrhizal fungal communities in the mesh bags and on adjacent fine roots after one growing season. Contrary to expectations, many ectomycorrhizal genera of exploration types that are thought to produce little extraradical mycelium colonised ingrowth bags extensively, whereas genera commonly associated with ample mycelial production occurred sparsely in ingrowth bags relative to their abundance on roots. Previous assumptions about soil foraging patterns of exploration types do not seem to hold. Instead, we propose that variation in the proliferation of extraradical mycelium is related to intergeneric differences in mycelial longevity and the mobility of targeted resources.
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Affiliation(s)
- Karolina Jörgensen
- Department of Soil and EnvironmentSwedish University of Agricultural SciencesBox 7014SE‐750 07UppsalaSweden
- Department of Biological SciencesUniversity of BergenBox 7803NO‐5020BergenNorway
| | - Karina E. Clemmensen
- Department of Forest Mycology and Plant PathologySwedish University of Agricultural SciencesBox 7026SE‐750 07UppsalaSweden
| | - Håkan Wallander
- Department of BiologyLund UniversitySölvegatan 37223 26LundSweden
| | - Björn D. Lindahl
- Department of Soil and EnvironmentSwedish University of Agricultural SciencesBox 7014SE‐750 07UppsalaSweden
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Impact of model assumptions on the inference of the evolution of ectomycorrhizal symbiosis in fungi. Sci Rep 2022; 12:22043. [PMID: 36543862 PMCID: PMC9772227 DOI: 10.1038/s41598-022-26514-2] [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: 09/05/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Ectomycorrhiza (ECM) is a symbiotic relation between plant and fungi that is essential for nutrient uptake of many stand forming trees. There are two conflicting views about the evolution of ECM in fungi suggesting (1) relatively few transitions to ECM followed by reversals to non-ECM, or (2) many independent origins of ECM and no reversals. In this study, we compare these, and other, hypotheses and test the impact of different models on inference. We assembled a dataset of five marker gene sequences (nuc58, nucLSU, nucSSU, rpb1, and rpb2) and 2,174 fungal taxa covering the three subphyla: Agaricomycotina, Mucoromycotina and Pezizomycotina. The fit of different models, including models with variable rates in clades or through time, to the pattern of ECM fungal taxa was tested in a Bayesian framework, and using AIC and simulations. We find that models implementing variable rates are a better fit than models without rate shift, and that the conclusion about the relative rate between ECM and non-ECM depend largely on whether rate shifts are allowed or not. We conclude that standard constant-rate ancestral state reconstruction models are not adequate for the analysis of the evolution of ECM fungi, and may give contradictory results to more extensive analyses.
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36
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Bazzicalupo A. Local adaptation in fungi. FEMS Microbiol Rev 2022; 46:6604384. [PMID: 35675293 DOI: 10.1093/femsre/fuac026] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 01/09/2023] Open
Abstract
In this review, I explore the pervasive but underappreciated role of local adaptation in fungi. It has been difficult historically to study local adaptation in fungi because of the limited understanding of fungal species and their traits, but new hope has been offered with technological advances in sequencing. The filamentous nature of fungi invalidates some assumptions made in evolution because of their ability to exist as multinucleate entities with genetically different nuclei sharing the same cytoplasm. Many insights on local adaptation have come from studying fungi, and much of the empirical evidence gathered about local adaptation in the context of host-pathogen interactions comes from studying fungal virulence genes, drug resistance, and environmental adaptation. Together, these insights paint a picture of the variety of processes involved in fungal local adaptation and their connections to the unusual cell biology of Fungi (multinucleate, filamentous habit), but there is much that remains unknown, with major gaps in our knowledge of fungal species, their phenotypes, and the ways by which they adapt to local conditions.
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Affiliation(s)
- Anna Bazzicalupo
- Department of Zoology, University of British Columbia, 4200 - 6270 University Blvd., Vancouver V6T 1Z4, Canada
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37
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Karlsen-Ayala E, Smith ME, Askey BC, Gazis R. Native ectomycorrhizal fungi from the endangered pine rocklands are superior symbionts to commercial inoculum for slash pine seedlings. MYCORRHIZA 2022; 32:465-480. [PMID: 36210381 DOI: 10.1007/s00572-022-01092-3] [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: 05/05/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
The south Florida pine rocklands is a critically endangered, fire-dependent ecosystem dominated by the overstory tree Pinus densa (South Florida slash pine). Because pine recruitment in this ecosystem has proven problematic, restoration efforts need to include replanting slash pine trees. Even though ectomycorrhizal fungi are known to be critical symbionts of young pines and are necessary for the development of healthy pines, virtually nothing is known about these mutualists and their role in pine establishment and survival in the pine rocklands. One approach to improve pine establishment is to grow seedlings in a nursery before outplanting, facilitating early associations with ectomycorrhizae, and therefore improving seedling health. In this study, we compared health metrics (height, stem diameter, final needle length, root length, root colonization, needle greenness, root volume, and root:shoot ratio) of seedlings grown in soil amended with five commercially available mycorrhizal inocula versus field soil collected from three pine rockland fragments. Seedlings grown with native field soil from the pine rocklands generally performed better than those grown with commercial inoculum in all metrics except root length. According to their labels, each commercial inoculum contained between 4 and 10 ectomycorrhizal fungi species. However, no ectomycorrhizal fungi were recovered from two of the inoculum products and only three ectomycorrhizal fungi in total were recovered from the other three products. In contrast, seedlings grown with field soil are associated with ten ectomycorrhizal species. Our results highlight the importance of incorporating native ectomycorrhizal fungi into pine seedling replanting as part of restoration efforts in the pine rocklands.
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Affiliation(s)
- Elena Karlsen-Ayala
- Department of Plant Pathology, Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA.
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32608, USA.
- Department of Soil and Water Sciences, Southwest Research and Education Center, University of Florida, Immokalee, FL, 34142, USA.
| | - Matthew E Smith
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32608, USA
| | - Bryce C Askey
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA
| | - Romina Gazis
- Department of Plant Pathology, Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA
- Department of Plant Pathology, University of Florida, Gainesville, FL, 32608, USA
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Geml J, Leal CM, Nagy R, Sulyok J. Abiotic environmental factors drive the diversity, compositional dynamics and habitat preference of ectomycorrhizal fungi in Pannonian forest types. Front Microbiol 2022; 13:1007935. [PMID: 36312934 PMCID: PMC9597314 DOI: 10.3389/fmicb.2022.1007935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/16/2022] [Indexed: 11/26/2022] Open
Abstract
Ectomycorrhizal (ECM) fungi are among the most diverse and dominant fungal groups in temperate forests and are crucial for ecosystem functioning of forests and their resilience toward disturbance. We carried out DNA metabarcoding of ECM fungi from soil samples taken at 62 sites in the Bükk Mountains in northern Hungary. The selected sampling sites represent the characteristic Pannonian forest types distributed along elevation (i.e., temperature), pH and slope aspect gradients. We compared richness and community composition of ECM fungi among forest types and explored relationships among environmental variables and ECM fungal alpha and beta diversity. The DNA sequence data generated in this study indicated strong correlations between fungal community composition and environmental variables, particularly with pH and soil moisture, with many ECM fungi showing preference for specific zonal, topographic or edaphic forest types. Several ECM fungal genera showed significant differences in richness among forest types and exhibited strong compositional differences mostly driven by differences in environmental factors. Despite the relatively high proportions of compositional variance explained by the tested environmental variables, a large proportion of the compositional variance remained unexplained, indicating that both niche (environmental filtering) and neutral (stochastic) processes shape ECM fungal community composition at landscape level. Our work provides unprecedented insights into the diversity, landscape-level distribution, and habitat preferences of ECM fungi in the Pannonian forests of Northern Hungary.
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Affiliation(s)
- József Geml
- ELKH-EKKE Lendület Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Research and Development Centre, Eszterházy Károly Catholic University, Eger, Hungary
- *Correspondence: József Geml,
| | - Carla Mota Leal
- ELKH-EKKE Lendület Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
| | - Richárd Nagy
- Research and Development Centre, Eszterházy Károly Catholic University, Eger, Hungary
| | - József Sulyok
- Biodiversity Protection Group, Bükk National Park Directorate, Eger, Hungary
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Guo Y, Ji L, Wang M, Shan C, Shen F, Yang Y, He G, Purahong W, Yang L. View from the Top: Insights into the Diversity and Community Assembly of Ectomycorrhizal and Saprotrophic Fungi along an Altitudinal Gradient in Chinese Boreal Larix gmelinii-Dominated Forests. Microorganisms 2022; 10:microorganisms10101997. [PMID: 36296273 PMCID: PMC9607379 DOI: 10.3390/microorganisms10101997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 09/30/2022] [Accepted: 10/07/2022] [Indexed: 11/24/2022] Open
Abstract
The altitudinal patterns of soil fungi have attracted considerable attention; however, few studies have investigated the diversity and community assembly of fungal functional guilds along an altitudinal gradient. Here, we explored ectomycorrhizal (EcM) and saprotrophic (SAP) fungal diversity and community assembly along a 470 m vertical gradient (ranging from 830 to 1300 m) on Oakley Mountain, sampling bulk soils in the 0–10 cm and 10–20 cm soil layers of Larix gmelinii-dominated forests. Illumina MiSeq sequencing of the ITS genes was employed to explore the fungal community composition and diversity. The relative abundance of EcM and SAP fungi showed a divergent pattern along an altitudinal gradient, while we observed a consistent altitudinal tendency for EcM and SAP fungal diversity and community assembly. The diversity of both fungal guilds increased with increasing altitude. Altitude and soil moisture were the key factors affecting the community composition of both fungal guilds. In addition, the plant community composition significantly affected the EcM fungal community composition, whereas the dissolved organic nitrogen and ammonium nitrogen contents were the driving factors of SAP fungal community. Despite the effects of vegetation and soil factors, EcM and SAP fungal communities were mainly governed by stochastic processes (especially drift) at different altitudes and soil depths. These results shed new light on the ecology of different fungal functional guilds along an altitudinal gradient, which will provide a deeper understanding of the biogeography of soil fungi.
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Affiliation(s)
- Yi Guo
- School of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
| | - Li Ji
- School of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
- Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, 06120 Halle (Saale), Germany
| | - Mingwei Wang
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Chengfeng Shan
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Fangyuan Shen
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Yuchun Yang
- Jilin Academy of Forestry, Changchun 130033, China
| | - Gongxiu He
- School of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
- Correspondence: (G.H.); (L.Y.); Tel.: +86-137-9661-1896 (L.Y.)
| | - Witoon Purahong
- Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, 06120 Halle (Saale), Germany
| | - Lixue Yang
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
- Correspondence: (G.H.); (L.Y.); Tel.: +86-137-9661-1896 (L.Y.)
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40
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Yang N, Hua J, Zhang J, Liu D, Bhople P, Li X, Zhang Y, Ruan H, Xing W, Mao L. Soil nutrients and plant diversity affect ectomycorrhizal fungal community structure and functional traits across three subalpine coniferous forests. Front Microbiol 2022; 13:1016610. [PMID: 36274721 PMCID: PMC9583403 DOI: 10.3389/fmicb.2022.1016610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 09/22/2022] [Indexed: 11/30/2022] Open
Abstract
The symbiotic relationship between ectomycorrhizal fungi (EMF) and the roots of host plants is significantly important in regulating the health and stability of ecosystems, especially of those such as the climate warming affected subalpine forest ecosystems. Therefore, from the coniferous forest systems located in the Southern Qinghai-Tibetan Plateau, root tips from three forest tree species: Pinus wallichiana, Abies spectabilis and Picea spinulosa, were collected to look for the local causes of EMF community composition and diversity patterns. The EMF colonization rate, diversity and taxonomic community structure were determined by morphotyping and sanger sequencing of the fungal ITS gene from the root tip samples. Soil exploration types were identified based on the morphologies of the ectomycorrhizas, coupled with soil properties analysis and plant diversity survey. Contrasting patterns of EMF community and functional diversity were found across the studied three forests types dominated by different coniferous tree species. In terms of associations between soil and EMF properties, the total phosphorus (TP) and nitrate (NO3−) contents in soil negatively correlated with the colonization rate and the Shannon diversity index of EMF in contrast to the positive relationship between TP and EMF richness. The soil total nitrogen (TN), ammonium (NH4+) and plant diversity together caused 57.6% of the total variations in the EMF taxonomic community structure at the three investigated forest systems. Whereas based on the soil exploration types alone, NH4+ and TN explained 74.2% of variance in the EMF community structures. Overall, the findings of this study leverage our understanding of EMF dynamics and local influencing factors in coniferous forests dominated by different tree species within the subalpine climatic zone.
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Affiliation(s)
- Nan Yang
- Department of Ecology, College of Biology and the Environment, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Jiani Hua
- Department of Ecology, College of Biology and the Environment, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Jiangbao Zhang
- Department of Ecology, College of Biology and the Environment, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Dong Liu
- The Germplasm Bank of Wild Species, Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Parag Bhople
- Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, Limerick, Ireland
| | - Xiuxiu Li
- Department of Ecology, College of Biology and the Environment, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Yan Zhang
- Department of Ecology, College of Biology and the Environment, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Honghua Ruan
- Department of Ecology, College of Biology and the Environment, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Wei Xing
- Jiangsu Academy of Forestry, Nanjing, China
- Yangzhou Urban Forest Ecosystem National Research Station, Jiangsu, Yangzhou, China
- *Correspondence: Wei Xing,
| | - Lingfeng Mao
- Department of Ecology, College of Biology and the Environment, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- Lingfeng Mao,
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41
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Corrales A, Koch RA, Vasco-Palacios AM, Smith ME, Ge ZW, Henkel TW. Diversity and distribution of tropical ectomycorrhizal fungi. Mycologia 2022; 114:919-933. [PMID: 36194092 DOI: 10.1080/00275514.2022.2115284] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Abstract
The tropics were long considered to have few ectomycorrhizal fungi, presumably due to a paucity of ectomycorrhizal host plants relative to higher-latitude ecosystems. However, an increase in research in tropical regions over the past 30 years has greatly expanded knowledge about the occurrence of tropical ectomycorrhizal fungi. To assess their broad biogeographic and diversity patterns, we conducted a comprehensive review and quantitative data analysis of 49 studies with 80 individual data sets along with additional data from GlobalFungi to elucidate tropical diversity patterns and biogeography of ectomycorrhizal fungi across the four main tropical regions: the Afrotropics, the Neotropics, Southeast Asia, and Oceania. Generalized linear models were used to explore biotic and abiotic influences on the relative abundance of the 10 most frequently occurring lineages. We also reviewed the available literature and synthesized current knowledge about responses of fungi to anthropogenic disturbances, and their conservation status and threats. We found that /russula-lactarius and /tomentella-thelephora were the most abundant lineages in the Afrotropics, the Neotropics, and Southeast Asia, whereas /cortinarius was the most abundant lineage in Oceania, and that /russula-lactarius, /inocybe, and /tomentella-thelephora were the most species-rich lineages across all of the tropical regions. Based on these analyses, we highlight knowledge gaps for each tropical region. Increased sampling of tropical regions, collaborative efforts, and use of molecular methodologies are needed for a more comprehensive view of the ecology and diversity of tropical ectomycorrhizal fungi.
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Affiliation(s)
- Adriana Corrales
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Carrera 26 # 63B - 48, Bogotá 111221, Colombia
| | - Rachel A Koch
- Department of Plant Science and Landscape Architecture, University of Connecticut, 1376 Storrs Rd., Storrs, Connecticut 06269, USA
| | - Aída M Vasco-Palacios
- Grupo BioMicro y de Microbiología Ambiental, Escuela de Microbiología, Universidad de Antioquia UdeA, Calle 70 No. 52-2, Medellín, Colombia. Asociación Colombiana de Micología, ASCOLMIC
| | - Matthew E Smith
- Department of Plant Pathology, University of Florida, 2550 Hull Road, Gainesville, Florida 32611, USA
| | - Zai-Wei Ge
- Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Lanhei Road 132, Kunming 650201, China
| | - Terry W Henkel
- Department of Biological Sciences, California State Polytechnic University, Humboldt, 1 Harpst St., Arcata, California 95521, USA
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42
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Watershed-scale Variation in Potential Fungal Community Contributions to Ectomycorrhizal Biogeochemical Syndromes. Ecosystems 2022. [DOI: 10.1007/s10021-022-00788-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Ward EB, Duguid MC, Kuebbing SE, Lendemer JC, Bradford MA. The functional role of ericoid mycorrhizal plants and fungi on carbon and nitrogen dynamics in forests. THE NEW PHYTOLOGIST 2022; 235:1701-1718. [PMID: 35704030 DOI: 10.1111/nph.18307] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Ericoid mycorrhizal (ErM) shrubs commonly occur in forest understories and could therefore alter arbuscular (AM) and/or ectomycorrhizal (EcM) tree effects on soil carbon and nitrogen dynamics. Specifically, ErM fungi have extensive organic matter decay capabilities, and ErM plant and fungal tissues have high concentrations of secondary compounds that can form persistent complexes in the soil. Together, these traits could contribute to organic matter accumulation and inorganic nutrient limitation. These effects could also differ in AM- vs EcM-dominated stands at multiple scales within and among forest biomes by, for instance, altering fungal guild interactions. Most work on ErM effects in forests has been conducted in boreal forests dominated by EcM trees. However, ErM plants occur in c. 96, 69 and 29% of boreal, temperate and tropical forests, respectively. Within tropical montane forests, the effects of ErM plants could be particularly pronounced because their traits are more distinct from AM than EcM trees. Because ErM fungi can function as free-living saprotrophs, they could also be more resilient to forest disturbances than obligate symbionts. Further consideration of ErM effects within and among forest biomes could improve our understanding of how cooccurring mycorrhizal types interact to collectively affect soil carbon and nitrogen dynamics under changing conditions.
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Affiliation(s)
- Elisabeth B Ward
- The Forest School, Yale School of the Environment, Yale University, New Haven, CT, 06511, USA
- The New York Botanical Garden, The Bronx, NY, 10458, USA
| | - Marlyse C Duguid
- The Forest School, Yale School of the Environment, Yale University, New Haven, CT, 06511, USA
| | - Sara E Kuebbing
- The Forest School, Yale School of the Environment, Yale University, New Haven, CT, 06511, USA
| | | | - Mark A Bradford
- The Forest School, Yale School of the Environment, Yale University, New Haven, CT, 06511, USA
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44
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Miyamoto Y, Maximov TC, Kononov A, Sugimoto A. Soil propagule banks of ectomycorrhizal fungi associated with <i>Larix cajanderi</i> above the treeline in the Siberian Arctic. MYCOSCIENCE 2022; 63:142-148. [PMID: 37090475 PMCID: PMC10042316 DOI: 10.47371/mycosci.2022.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 05/08/2022] [Accepted: 05/08/2022] [Indexed: 11/16/2022]
Abstract
Microbial symbionts are essential for plant niche expansion into novel habitats. Dormant propagules of ectomycorrhizal (EM) fungi are thought to play an important role in seedling establishment in invasion fronts; however, propagule bank communities above the treeline are poorly understood in the Eurasian Arctic, where treelines are expected to advance under rapid climate change. To investigate the availability of EM fungal propagules, we collected 100 soil samples from Arctic tundra sites and applied bioassay experiments using Larix cajanderi as bait seedlings. We detected 11 EM fungal operational taxonomic units (OTUs) by obtaining entire ITS regions. Suillus clintonianus was the most frequently observed OTU, followed by Cenococcum geophilum and Sebacinales OTU1. Three Suillus and one Rhizopogon species were detected in the bioassay seedlings, indicating the availability of Larix-specific suilloid spores at least 30 km from the contemporary treeline. Spores of S. clintonianus and S. spectabilis remained infective after preservation for 14 mo and heat treatment at 60 °C, implying the durability of the spores. Long-distance dispersal capability and spore resistance to adverse conditions may represent ecological strategies employed by suilloid fungi to quickly associate with emerging seedlings of compatible hosts in treeless habitats.
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Affiliation(s)
| | - Trofim C. Maximov
- Institute for Biological Problems of Cryolithozone, Siberian Branch of Russian Academy of Sciences
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45
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Elliott T, Truong C, Jackson S, Zúñiga C, Trappe J, Vernes K. Mammalian Mycophagy: a Global Review of Ecosystem Interactions Between Mammals and Fungi. Fungal Syst Evol 2022; 9:99-159. [PMID: 36072820 PMCID: PMC9402283 DOI: 10.3114/fuse.2022.09.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 04/02/2022] [Indexed: 11/07/2022] Open
Abstract
The consumption of fungi by animals is a significant trophic interaction in most terrestrial ecosystems, yet the role mammals play in these associations has been incompletely studied. In this review, we compile 1 154 references published over the last 146 years and provide the first
comprehensive global review of mammal species known to eat fungi (508 species in 15 orders). We review experimental studies that found viable fungal inoculum in the scats of at least 40 mammal species, including spores from at least 58 mycorrhizal fungal species that remained viable after
ingestion by mammals. We provide a summary of mammal behaviours relating to the consumption of fungi, the nutritional importance of fungi for mammals, and the role of mammals in fungal spore dispersal. We also provide evidence to suggest that the morphological evolution of sequestrate fungal
sporocarps (fruiting bodies) has likely been driven in part by the dispersal advantages provided by mammals. Finally, we demonstrate how these interconnected associations are widespread globally and have far-reaching ecological implications for mammals, fungi and associated plants in most
terrestrial ecosystems.
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Affiliation(s)
- T.F. Elliott
- Ecosystem Management, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia
| | - C. Truong
- Royal Botanic Gardens Victoria, Birdwood Ave, Melbourne, VIC 3004, Australia
| | - S.M. Jackson
- Australian Museum Research Institute, Australian Museum, 1 William St., Sydney, NSW 2010, Australia
| | - C.L. Zúñiga
- Instituto de Biología, Universidad Nacional Autónoma de México, Tercer Circuito s/n, Ciudad Universitaria, 04510 Ciudad de México, Mexico
| | - J.M. Trappe
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331, USA
| | - K. Vernes
- Ecosystem Management, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia
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46
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Thompson L, Swift SOI, Egan CP, Yogi D, Chapin T, Hynson NA. Traits and tradeoffs among non-native ectomycorrhizal fungal symbionts affect pine seedling establishment in a Hawaiian coinvasion landscape. Mol Ecol 2022; 31:4176-4187. [PMID: 35699341 DOI: 10.1111/mec.16564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 05/19/2022] [Accepted: 06/09/2022] [Indexed: 11/28/2022]
Abstract
Pine invasions lead to losses of native biodiversity and ecosystem function, but pine invasion success is often linked to coinvading non-native ectomycorrhizal (EM) fungi. How the community composition, traits, and distributions of these fungi vary over the landscape and how this affects pine success is understudied. A greenhouse bioassay experiment was performed to test the effects of changes in EM fungal community structure from a pine plantation, to an invasion front to currently pine-free areas on percent root colonization and seedling biomass. Soils were also analysed by qPCR to determine changes in inoculum and spore density over distance for a common coinvading EM fungus, Suillus pungens. Percent colonization increased with distance from the plantation, which corresponded with an increase in seedling biomass and stark changes in EM fungal community membership where Suillus spp. dominated currently pine-free areas. However, there was a negative relationship between S. pungens inoculum potential versus root colonization over distance. We conclude that the success of pine invasions is facilitated by specific traits of Suillus spp., but that the success of Suillus is contingent on a lack of competition with other ectomycorrhizal fungi.
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Affiliation(s)
| | | | - Cameron P Egan
- University of Hawai'i at Mānoa, Honolulu, USA.,Okanagan College, Kelowna, British Columbia, Canada
| | - Danyel Yogi
- University of Hawai'i at Mānoa, Honolulu, USA
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47
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Unipartite and bipartite mycorrhizal networks of Abies religiosa forests: Incorporating network theory into applied ecology of conifer species and forest management. ECOLOGICAL COMPLEXITY 2022. [DOI: 10.1016/j.ecocom.2022.101002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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48
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Yan H, Freschet GT, Wang H, Hogan JA, Li S, Valverde-Barrantes OJ, Fu X, Wang R, Dai X, Jiang L, Meng S, Yang F, Zhang M, Kou L. Mycorrhizal symbiosis pathway and edaphic fertility frame root economics space among tree species. THE NEW PHYTOLOGIST 2022; 234:1639-1653. [PMID: 35243647 DOI: 10.1111/nph.18066] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
The root economics space (RES) is multidimensional and largely shaped by belowground biotic and abiotic influences. However, how root-fungal symbioses and edaphic fertility drive this complexity remains unclear. Here, we measured absorptive root traits of 112 tree species in temperate and subtropical forests of China, including traits linked to functional differences between arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) hosts. Our data, from known mycorrhizal tree species, revealed a 'fungal-symbiosis' dimension distinguishing AM from ECM species. This divergence likely resulted from the contrasting mycorrhizal evolutionary development of AM vs ECM associations. Increased root tissue cortical space facilitates AM symbiosis, whereas increased root branching favours ECM symbiosis. Irrespective of mycorrhizal type, a 'root-lifespan' dimension reflecting aspects of root construction cost and defence was controlled by variation in specific root length and root tissue density, which was fully independent of root nitrogen content. Within this function-based RES, we observed a substantial covariation of axes with soil phosphorus and nitrate levels, highlighting the role played by these two axes in nutrient acquisition and conservation. Overall, our findings demonstrate the importance of evolved mycorrhizal symbiosis pathway and edaphic fertility in framing the RES, and provide theoretical and mechanistic insights into the complexity of root economics.
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Affiliation(s)
- Han Yan
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Grégoire T Freschet
- Station d'Ecologie Théorique et Expérimentale, CNRS, 2 route du CNRS, Moulis, 09200, France
| | - Huimin Wang
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - James Aaron Hogan
- Department of Biological Sciences, Institute of Environment, International Center of Tropical Biodiversity, Florida International University, Miami, FL, 33199, USA
- Department of Biology, University of Florida, Gainesville, FL, 32605, USA
| | - Shenggong Li
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Oscar J Valverde-Barrantes
- Department of Biological Sciences, Institute of Environment, International Center of Tropical Biodiversity, Florida International University, Miami, FL, 33199, USA
| | - Xiaoli Fu
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruili Wang
- College of Forestry, Northwest A&F University, Yangling, 712100, China
| | - Xiaoqin Dai
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lei Jiang
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shengwang Meng
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Fengting Yang
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Miaomiao Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Liang Kou
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
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49
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Zhu C, Wang Z, Deane DC, Luo W, Chen Y, Cao Y, Lin Y, Zhang M. The Effects of Species Abundance, Spatial Distribution, and Phylogeny on a Plant-Ectomycorrhizal Fungal Network. FRONTIERS IN PLANT SCIENCE 2022; 13:784778. [PMID: 35665141 PMCID: PMC9158544 DOI: 10.3389/fpls.2022.784778] [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: 09/28/2021] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
Plant and root fungal interactions are among the most important belowground ecological interactions, however, the mechanisms underlying pairwise interactions and network patterns of rhizosphere fungi and host plants remain unknown. We tested whether neutral process or spatial constraints individually or jointly best explained quantitative plant-ectomycorrhizal fungal network assembly in a subtropical forest in southern China. Results showed that the observed plant-ectomycorrhizal fungal network had low connectivity, high interaction evenness, and an intermediate level of specialization, with nestedness and modularity both greater than random expectation. Incorporating information on the relative abundance and spatial overlap of plants and fungi well predicted network nestedness and connectance, but not necessarily explained other network metrics such as specificity. Spatial overlap better predicted pairwise species interactions of plants and ectomycorrhizal fungi than species abundance or a combination of species abundance and spatial overlap. There was a significant phylogenetic signal on species degree and interaction strength for ectomycorrhizal fungal but not for plant species. Our study suggests that neutral processes (species abundance matching) and niche/dispersal-related processes (implied by spatial overlap and phylogeny) jointly drive the shaping of a plant-ectomycorrhizal fungal network.
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Affiliation(s)
- Chunchao Zhu
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Zihui Wang
- Département des Sciences Biologiques, Université du Québec à Montréal, Montréal, QC, Canada
| | - David C. Deane
- Centre for Future Landscapes and Department of Environment and Genetics, La Trobe University, Bundoora, VIC, Australia
| | - Wenqi Luo
- Department of Ecology, Sun Yat-sen University, Guangzhou, China
| | - Yongfa Chen
- Department of Ecology, Sun Yat-sen University, Guangzhou, China
| | - Yongjun Cao
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Yumiao Lin
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Minhua Zhang
- ECNU-Alberta Joint Lab for Biodiversity Study, Zhejiang Tiantong National Station for Forest Ecosystems, East China Normal University, Shanghai, China
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50
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Kutos S, Barnes EM, Bhutada A, Lewis JD. Preferential associations of soil fungal taxa under mixed compositions of eastern American tree species. FEMS Microbiol Ecol 2022; 98:6581587. [PMID: 35521705 DOI: 10.1093/femsec/fiac056] [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: 10/11/2021] [Revised: 04/12/2022] [Accepted: 05/04/2022] [Indexed: 11/14/2022] Open
Abstract
Soil fungi are vital to forest ecosystem function, in part through their role mediating tree responses to environmental factors, as well as directly through effects on resource cycling. While the distribution of soil fungi can vary with abiotic factors, plant species identity is also known to affect community composition. However, the particular influence that a plant will have on its soil microbiota remains difficult to predict. Here, we paired amplicon sequencing and enzymatic assays to assess soil fungal composition and function under three tree species, Quercus rubra, Betula nigra, and Acer rubrum, planted individually and in all combinations in a greenhouse. We observed that fungal communities differed between each of the individual planted trees, suggesting at least some fungal taxa may associate preferentially with these tree species. Additionally, fungal community composition under mixed-tree plantings broadly differed from the individual planted trees, suggesting mixing of these distinct soil fungal communities. The data also suggest that there were larger enzymatic activities in the individual plantings as compared to all mixed-tree plantings which may be due to variations in fungal community composition. This study provides further evidence of the importance of tree identity on soil microbiota and functional changes to forest soils.
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Affiliation(s)
- Steve Kutos
- Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA.,Louis Calder Center - Biological Field Station, Fordham University, Armonk, NY 10504, USA
| | - Elle M Barnes
- Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA.,Louis Calder Center - Biological Field Station, Fordham University, Armonk, NY 10504, USA
| | - Arnav Bhutada
- Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA
| | - J D Lewis
- Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA.,Louis Calder Center - Biological Field Station, Fordham University, Armonk, NY 10504, USA
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