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Liu G, Liu R, Lee BR, Song X, Zhang W, Zhu Z, Shi Y. The Invasion of Galinsoga quadriradiata into High Elevations Is Shaped by Variation in AMF Communities. PLANTS (BASEL, SWITZERLAND) 2023; 12:3190. [PMID: 37765354 PMCID: PMC10534310 DOI: 10.3390/plants12183190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023]
Abstract
Mountain ranges have been previously suggested to act as natural barriers to plant invasion due to extreme environmental conditions. However, how arbuscular mycorrhizal fungi (AMF) affect invasion into these systems has been less explored. Here, we investigated how changes in AMF communities affect the performance of Galinsoga quadriradiata in mountain ranges. We performed a greenhouse experiment to study the impact of inoculations of AMF from different elevations on the performance and reproduction of invaders and how competition with native plants changes the effects of invader-AMF interactions. We found strong evidence for a nuanced role of AMF associations in the invasion trajectory of G. quadriradiata, with facilitative effects at low elevations and inhibitory effects at high elevations. Galinsoga quadriradiata performed best when grown with inoculum collected from the same elevation but performed worst when grown with inoculum collected from beyond its currently invaded range, suggesting that AMF communities can help deter invasion at high elevations. Finally, the invasive plants grown alone experienced negative effects from AMF, while those grown in competition experienced positive effects, regardless of the AMF source. This suggests that G. quadriradiata lowers its partnerships with AMF in stressful environments unless native plants are present, in which case it overpowers native plants to obtain AMF support during invasion. Finally, our results indicate that invader-AMF interactions can inhibit invasive range expansion at high elevations, and biotic interactions, in addition to harsh environmental conditions, make high-elevation mountain ranges natural barriers against continued invasion.
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Affiliation(s)
- Gang Liu
- College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China; (R.L.); (X.S.); (W.Z.); (Z.Z.); (Y.S.)
- Research Center for UAV Remote Sensing, Shaanxi Normal University, Xi’an 710119, China
- Changqing Teaching & Research Base of Ecology, Shaanxi Normal University, Xi’an 710119, China
| | - Ruiling Liu
- College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China; (R.L.); (X.S.); (W.Z.); (Z.Z.); (Y.S.)
| | - Benjamin R. Lee
- Carnegie Museum of Natural History, Pittsburgh, PA 15213, USA;
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15213, USA
- Holden Forest and Gardens, Kirtland, OH 44094, USA
| | - Xingjiang Song
- College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China; (R.L.); (X.S.); (W.Z.); (Z.Z.); (Y.S.)
| | - Wengang Zhang
- College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China; (R.L.); (X.S.); (W.Z.); (Z.Z.); (Y.S.)
| | - Zhihong Zhu
- College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China; (R.L.); (X.S.); (W.Z.); (Z.Z.); (Y.S.)
- Research Center for UAV Remote Sensing, Shaanxi Normal University, Xi’an 710119, China
- Changqing Teaching & Research Base of Ecology, Shaanxi Normal University, Xi’an 710119, China
| | - Yan Shi
- College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China; (R.L.); (X.S.); (W.Z.); (Z.Z.); (Y.S.)
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Yu J, Niu Y, You Y, Cox CJ, Barrett RL, Trias-Blasi A, Guo J, Wen J, Lu L, Chen Z. Integrated phylogenomic analyses unveil reticulate evolution in Parthenocissus (Vitaceae), highlighting speciation dynamics in the Himalayan-Hengduan Mountains. THE NEW PHYTOLOGIST 2023; 236:1140-1153. [PMID: 36305244 DOI: 10.1111/nph.18289] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/22/2022] [Indexed: 05/20/2023]
Abstract
Hybridization caused by frequent environmental changes can lead both to species diversification (speciation) and to speciation reversal (despeciation), but the latter has rarely been demonstrated. Parthenocissus, a genus with its trifoliolate lineage in the Himalayan-Hengduan Mountains (HHM) region showing perplexing phylogenetic relationships, provides an opportunity for investigating speciation dynamics based on integrated evidence. We investigated phylogenetic discordance and reticulate evolution in Parthenocissus based on rigorous analyses of plastome and transcriptome data. We focused on reticulations in the trifoliolate lineage in the HHM region using a population-level genome resequencing dataset, incorporating evidence from morphology, distribution, and elevation. Comprehensive analyses confirmed multiple introgressions within Parthenocissus in a robust temporal-spatial framework. Around the HHM region, at least three hybridization hot spots were identified, one of which showed evidence of ongoing speciation reversal. We present a solid case study using an integrative methodological approach to investigate reticulate evolutionary history and its underlying mechanisms in plants. It demonstrates an example of speciation reversal through frequent hybridizations in the HHM region, which provides new perspectives on speciation dynamics in mountainous areas with strong topographic and environmental heterogeneity.
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Affiliation(s)
- Jinren Yu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanting Niu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- China National Botanical Garden, Beijing, 100093, China
| | - Yichen You
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Cymon J Cox
- Centro de Ciências do Mar, Universidade do Algarve, Gambelas, Faro, 8005-319, Portugal
| | - Russell L Barrett
- National Herbarium of New South Wales, Australian Botanic Garden, Locked Bag 6002, Mount Annan, 2567, NSW, Australia
| | | | - Jing Guo
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center of Genetics and Development, Ministry of Education Key Laboratory of Biodiversity and Ecological Engineering, Institute of Plant Biology, Center of Evolutionary Biology, School of Life Sciences, Fudan University, Shanghai, 200433, China
| | - Jun Wen
- Department of Botany, National Museum of Natural History, MRC-166, Smithsonian Institution, Washington, DC, 20013-7012, USA
| | - Limin Lu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Zhiduan Chen
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
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Kato-Noguchi H, Kato M. Allelopathy and Allelochemicals of Solidago canadensis L. and S. altissima L. for Their Naturalization. PLANTS (BASEL, SWITZERLAND) 2022; 11:3235. [PMID: 36501274 PMCID: PMC9738410 DOI: 10.3390/plants11233235] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Solidago canadensis L. and Solidago altissima L. are native to North America and have naturalized many other continents including Europa and Asia. Their species is an aggressive colonizer and forms thick monospecific stands. The evidence of the allelopathy for S. canadensis and S. altissima has accumulated in the literature since the late 20th century. The root exudates, extracts, essential oil and rhizosphere soil of S. canadensis suppressed the germination, growth and the arbuscular mycorrhizal colonization of several plants, including native plant species. Allelochemicals such as fatty acids, terpenes, flavonoids, polyphenols and their related compounds were identified in the extracts and essential oil of S. canadensis. The concentrations of total phenolics, total flavonoids and total saponins in the rhizosphere soil of S. canadensis obtained from the invasive ranges were greater than those from the native ranges. Allelochemicals such as terpenes, flavonoids, polyacetylene and phenols were also identified in the extracts, essential oil and the rhizosphere soil in S. altissima. Among the identified allelochemicals of S. altissima, the cis-dehydromatricaria ester may be involved in the allelopathy considering its growth inhibitory activity and its concentration in the rhizosphere soil. Therefore, the allelopathy of S. canadensis and S. altissima may support their invasiveness, naturalization and formation of thick monospecific stands. This is the first review article focusing on the allelopathy of both of S. canadensis and S. altissima.
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Li C, Bo H, Song B, Chen X, Cao Q, Yang R, Ji S, Wang L, Liu J. Reshaping of the soil microbiome by the expansion of invasive plants: shifts in structure, diversity, co-occurrence, niche breadth, and assembly processes. PLANT AND SOIL 2022; 477:629-646. [DOI: 10.1007/s11104-022-05445-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 04/12/2022] [Indexed: 06/14/2024]
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Oduor AMO, Adomako MO, Yuan Y, Li JM. Older populations of the invader Solidago canadensis exhibit stronger positive plant-soil feedbacks and competitive ability in China. AMERICAN JOURNAL OF BOTANY 2022; 109:1230-1241. [PMID: 35819013 DOI: 10.1002/ajb2.16034] [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: 03/06/2022] [Revised: 06/08/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
PREMISE The enemy release hypothesis predicts that release from natural enemies, including soil-borne pathogens, liberates invasive plants from a negative regulating force. Nevertheless, invasive plants may acquire novel enemies and mutualists in the introduced range, which may cause variable effects on invader growth. However, how soil microorganisms may influence competitive ability of invasive plants along invasion chronosequences has been little explored. METHODS Using the invasive plant Solidago canadensis, we tested whether longer residence times are associated with stronger negative plant-soil feedbacks and thus weaker competitive abilities at the individual level. We grew S. canadensis individuals from 36 populations with different residence times across southeastern China in competition versus no competition and in three different types of soils: (1) conspecific rhizospheric soils; (2) soils from uninvaded patches; and (3) sterilized soil. For our competitor treatments, we constructed synthetic communities of four native species (Bidens parviflora, Solanum nigrum, Kalimeris indica, and Mosla scabra), which naturally co-occur with Solidago canadensis in the field. RESULTS Solidago canadensis populations with longer residence times experienced stronger positive plant-soil feedbacks and had greater competitive responses (i.e., produced greater above-ground biomass and grew taller) in conspecific rhizospheric soils than in sterilized or uninvaded soils. Moreover, S. canadensis from older populations significantly suppressed above-ground biomass of the native communities in rhizospheric and uninvaded soils but not in sterilized soil. CONCLUSIONS The present results suggest that older populations of S. canadensis experience stronger positive plant-soil feedbacks, which may enhance their competitive ability against native plant communities.
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Affiliation(s)
- Ayub M O Oduor
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
- Department of Applied Biology, Technical University of Kenya, P.O. Box, 52428, Nairobi, Kenya
| | - Michael Opoku Adomako
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
| | - Yongge Yuan
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
| | - Jun-Min Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
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Invasive Lactuca serriola seeds contain endophytic bacteria that contribute to drought tolerance. Sci Rep 2021; 11:13307. [PMID: 34172799 PMCID: PMC8233371 DOI: 10.1038/s41598-021-92706-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 06/15/2021] [Indexed: 02/06/2023] Open
Abstract
The mutualistic relationship between alien plant species and microorganisms is proposed to facilitate or hinder invasive success, depending on whether plants can form novel associations with microorganisms in the introduced habitats. However, this hypothesis has not considered seed endophytes that would move together with plant propagules. Little information is available on the seed endophytic bacteria of invasive species and their effects on plant performance. We isolated the seed endophytic bacteria of a xerophytic invasive plant, Lactuca serriola, and examined their plant growth-promoting traits. In addition, we assessed whether these seed endophytes contributed to plant drought tolerance. Forty-two bacterial species were isolated from seeds, and all of them exhibited at least one plant growth-promoting trait. Kosakonia cowanii occurred in all four tested plant populations and produced a high concentration of exopolysaccharides in media with a highly negative water potential. Notably, applying K. cowanii GG1 to Arabidopsis thaliana stimulated plant growth under drought conditions. It also reduced soil water loss under drought conditions, suggesting bacterial production of exopolysaccharides might contribute to the maintenance of soil water content. These results imply that invasive plants can disperse along with beneficial bacterial symbionts, which potentially improve plant fitness and help to establish alien plant species.
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Borah M, Das S, Bora SS, Boro RC, Barooah M. Comparative assessment of multi-trait plant growth-promoting endophytes associated with cultivated and wild Oryza germplasm of Assam, India. Arch Microbiol 2021; 203:2007-2028. [PMID: 33554275 DOI: 10.1007/s00203-020-02153-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 10/22/2022]
Abstract
This paper presents a comparative study of endophytic bacteria from cultivated (Oryza sativa) and wild rice (Oryza rufipogon) plants and their functional traits related to plant growth promotion. A total of 70 bacterial isolates were characterized by both biochemical and molecular identification methods. Taxonomic classification showed dominance of three major phyla, viz, Firmicutes (57.1%), Actinobacteria (20.0%) and Proteobacteria (22.8%). Screening for in vitro plant growth-promoting activities revealed a hitherto unreported endophytic bacterium from wild rice germplasm, Microbacterium laevaniformans RS0111 with highest indole acetic acid (28.39 ± 1.39 µg/ml) and gibberellic acid (67.23 ± 1.83 µg/ml) producing efficiency. Few other endophytic isolates from cultivated rice germplasm such as Bacillus tequilensis RHS01 showed highest phosphate solubilizing activity (81.70 ± 1.98 µg/ml), while Microbacterium testaceum MKLS01 and Microbacterium enclense MI03 L05 showed highest potassium (53.42 ± 0.75 µg/ml) and zinc solubilizing activity (157.50%). Fictibacillus aquaticus LP20 05 produced highest siderophore (64.8%). In vivo evaluation of plant growth-promoting efficiencies of the isolates showed that Microbacterium laevaniformans RS0111, Microbacterium testaceum MKLS01 and Bacillus tequilensis RHS 01 could increase rice grain yield by 3.4-fold when compared to the control group. This study indicates the potentiality of rice endophytes isolates as an effective bioinoculants.
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Affiliation(s)
- Madhusmita Borah
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
| | - Saurav Das
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
| | - Sudipta Sankar Bora
- DBT-North East Centre for Agricultural Biotechnology (DBT-NECAB), Assam Agricultural University, Jorhat, Assam, India
| | - Robin Chandra Boro
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
| | - Madhumita Barooah
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India. .,DBT-North East Centre for Agricultural Biotechnology (DBT-NECAB), Assam Agricultural University, Jorhat, Assam, India.
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8
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Řezáčová V, Řezáč M, Gryndlerová H, Wilson GWT, Michalová T. Arbuscular mycorrhizal fungi favor invasive Echinops sphaerocephalus when grown in competition with native Inula conyzae. Sci Rep 2020; 10:20287. [PMID: 33219310 PMCID: PMC7679399 DOI: 10.1038/s41598-020-77030-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 09/28/2020] [Indexed: 12/04/2022] Open
Abstract
In a globalized world, plant invasions are common challenges for native ecosystems. Although a considerable number of invasive plants form arbuscular mycorrhizae, interactions between arbuscular mycorrhizal (AM) fungi and invasive and native plants are not well understood. In this study, we conducted a greenhouse experiment examining how AM fungi affect interactions of co-occurring plant species in the family Asteracea, invasive Echinops sphaerocephalus and native forb of central Europe Inula conyzae. The effects of initial soil disturbance, including the effect of intact or disturbed arbuscular mycorrhizal networks (CMNs), were examined. AM fungi supported the success of invasive E. sphaerocephalus in competition with native I. conyzae, regardless of the initial disturbance of CMNs. The presence of invasive E. sphaerocephalus decreased mycorrhizal colonization in I. conyzae, with a concomitant loss in mycorrhizal benefits. Our results confirm AM fungi represent one important mechanism of plant invasion for E. sphaerocephalus in semi-natural European grasslands.
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Affiliation(s)
- Veronika Řezáčová
- Crop Research Institute, Drnovská 507, Prague 6, Czech Republic.
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, Czech Republic.
| | - Milan Řezáč
- Crop Research Institute, Drnovská 507, Prague 6, Czech Republic
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, Czech Republic
| | - Hana Gryndlerová
- Crop Research Institute, Drnovská 507, Prague 6, Czech Republic
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, Czech Republic
| | - Gail W T Wilson
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK, USA
| | - Tereza Michalová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, Czech Republic
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Wang C, Wei M, Wang S, Wu B, Du D. Cadmium influences the litter decomposition of Solidago canadensis L. and soil N-fixing bacterial communities. CHEMOSPHERE 2020; 246:125717. [PMID: 31918081 DOI: 10.1016/j.chemosphere.2019.125717] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
It is important to illuminate the effects of litter decomposition of invasive alien species on soil N-fixing bacterial communities (SoNiBa), especially under heavy metal pollution to better outline the mechanisms for invasion success of invasive alien species. This study attempts to identify the effects of litter decomposition of Solidago canadensis L. on SoNiBa under cadmium (Cd) pollution with different concentrations (i.e., low concentration, 7.5 mg/kg soil; high concentration, 15 mg/kg soil) via a polyethylene litterbags-experiment. Electrical conductivity and total N of soil were the most important environmental factors for determining the variations of SoNiBa composition. S. canadensis did not significantly affect the alpha diversity of SoNiBa but significantly affect the beta diversity of SoNiBa and SoNiBa composition. Thus, SoNiBa composition, rather than alpha diversity of SoNiBa, was the most important determinant of the invasion success of S. canadensis. Cd with 15 mg/kg soil did not address distinct effects on alpha diversity of SoNiBa, but Cd with 7.5 mg/kg soil noticeably raised the number of species and species richness of SoNiBa mainly due to the hormonal effects. The combined S. canadensis and Cd with 15 mg/kg soil obviously decreased cumulative mass losses and the rate of litter decomposition (k) of S. canadensis, but the combined S. canadensis and Cd with 7.5 mg/kg soil evidently accelerated cumulative mass losses and k of S. canadensis. Thus, Cd with 7.5 mg/kg soil can accelerate litter decomposition of S. canadensis, but Cd with 15 mg/kg soil can decline litter decomposition of S. canadensis.
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Affiliation(s)
- Congyan Wang
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, PR China.
| | - Mei Wei
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Shu Wang
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Bingde Wu
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Daolin Du
- Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
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Pei Y, Siemann E, Tian B, Ding J. Root flavonoids are related to enhanced AMF colonization of an invasive tree. AOB PLANTS 2020; 12:plaa002. [PMID: 32071712 PMCID: PMC7015461 DOI: 10.1093/aobpla/plaa002] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 01/09/2020] [Indexed: 05/20/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) are important mutualistic microbes in soil, which have capacity to form mutualistic associations with most land plants. Arbuscular mycorrhizal fungi play an important role in plant invasions and their interactions with invasive plants have received increasing attention. However, the chemical mechanisms underlying the interactions of AMF and invasive plants are still poorly understood. In this study we aim to test whether root secondary chemicals are related to enhanced AMF colonization and rapid growth in an invasive tree. We conducted a common garden experiment in China with Chinese tallow tree (Triadica sebifera) to examine the relationships among AMF colonization and secondary metabolites in roots of plants from introduced (USA) and native (China) populations. We found that AMF colonization rate was higher in introduced populations compared to native populations. Roots of plants from introduced populations had lower levels of phenolics and tannins, but higher levels of flavonoids than those of plants from native populations. Flavonoids were positively correlated with AMF colonization, and this relationship was especially strong for introduced populations. Besides, AMF colonization was positively correlated with plant biomass suggesting that higher root flavonoids and AMF colonization may impact plant performance. This suggests that higher root flavonoids in plants from introduced populations may promote AMF spore germination and/or attract hyphae to their roots, which may subsequently increase plant growth. Overall, our results support a scenario in which invasive plants enhance their AMF association and invasion success via genetic changes in their root flavonoid metabolism. These findings advance our understanding of the mechanisms underlying plant invasion success and the evolutionary interactions between plants and AMF. Understanding such mechanisms of invasive plant success is critical for predicting and managing plant invasions in addition to providing important insights into the chemical mechanism of AMF-plant interactions.
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Affiliation(s)
- Yingchun Pei
- School of Life Sciences, Henan University, Kaifeng, Henan, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, Henan, China
| | - Evan Siemann
- Biosciences Department, Rice University, Houston, TX, USA
| | - Baoliang Tian
- School of Life Sciences, Henan University, Kaifeng, Henan, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, Henan, China
- Corresponding authors’ e-mail addresses: ;
| | - Jianqing Ding
- School of Life Sciences, Henan University, Kaifeng, Henan, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, Henan, China
- Corresponding authors’ e-mail addresses: ;
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11
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Zhang P, Li B, Wu J, Hu S. Invasive plants differentially affect soil biota through litter and rhizosphere pathways: a meta-analysis. Ecol Lett 2018; 22:200-210. [PMID: 30460738 DOI: 10.1111/ele.13181] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/19/2018] [Accepted: 10/15/2018] [Indexed: 02/06/2023]
Abstract
Invasive plants affect soil biota through litter and rhizosphere inputs, but the direction and magnitude of these effects are variable. We conducted a meta-analysis to examine the different effects of litter and rhizosphere of invasive plants on soil communities and nutrient cycling. Our results showed that invasive plants increased bacterial biomass by 16%, detritivore abundance by 119% and microbivore abundance by 89% through litter pathway. In the rhizosphere, invasive plants reduced bacterial biomass by 12%, herbivore abundance by 55% and predator abundance by 52%, but increased AM fungal biomass by 36%. Moreover, CO2 efflux, N mineralisation rate and enzyme activities were all higher in invasive than native rhizosphere soils. These findings indicate that invasive plants may support more decomposers that in turn stimulate nutrient release via litter effect, and enhance nutrient uptake by reducing root grazing but forming more symbioses in the rhizosphere. Thus, we hypothesise that litter- and root-based loops are probably linked to generate positive feedback of invaders on soil systems through stimulating nutrient cycling, consequently facilitating plant invasion. Our findings from limited cases with diverse contexts suggest that more studies are needed to differentiate litter and rhizosphere effects within single systems to better understand invasive plant-soil interactions.
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Affiliation(s)
- Pei Zhang
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, 200438, China.,Department of Entomology & Plant Pathology, North Carolina State University, Raleigh, NC, 27695, USA.,Key Laboratory for Bio-Resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China
| | - Bo Li
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Jihua Wu
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Shuijin Hu
- Department of Entomology & Plant Pathology, North Carolina State University, Raleigh, NC, 27695, USA.,College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
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12
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Zhang F, Li Q, Yerger EH, Chen X, Shi Q, Wan F. AM fungi facilitate the competitive growth of two invasive plant species, Ambrosia artemisiifolia and Bidens pilosa. MYCORRHIZA 2018; 28:703-715. [PMID: 30220052 DOI: 10.1007/s00572-018-0866-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
Invasive species often cause enormous economic and ecological damage, and this is especially true for invasive plants in the Asteraceae family. Arbuscular mycorrhizal fungi (AMF) play an important role in the successful invasion by exotic plant species because of their ability to promote growth and influence interspecific competition. However, few studies have evaluated the effects of invasive Asteraceae species on AMF diversity and how feedback mechanisms during competition with native species subsequently affect the accumulation of nutrient resources. Two exotic Asteraceae, Ambrosia artemisiifolia and Bidens pilosa, were monitored during competition with a native grass species, Setaria viridis, which is being replaced by these exotic species in natural areas around the study site. From these species continuously maintained in a field plot for 5 years, we collected the rhizosphere soil and cloned and identified soil AMF. Furthermore, AM fungal spores were isolated from rhizosphere soil of the two invasive species and used as inoculum in greenhouse experiments, to compare growth and nutrient accumulation during competition. The results indicate that although the AMF diversity in the rhizosphere soil of A. artemisiifolia and B. pilosa differed, the three most abundant species (Septoglomus viscosum, Septoglomus constrictum, Glomus perpusillum) were identical. The addition of AMF inoculum changed the competition between the plants, increasing the competitive ability of the invasives and decreasing that of the native. The results show a similar AMF community composition between A. artemisiifolia and B. pilosa, increased AMF root colonization of the invasive species during competition, AMF-enhanced N accumulation, and AMF-facilitated competitive growth of the invasive species.
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Affiliation(s)
- Fengjuan Zhang
- College of Life Science, Hebei University, 180 Wusi East, Baoding, 071002, Hebei Province, China.
| | - Qiao Li
- College of Plant Protection, Hunan Agricultural University, Changsha, 410128, Hunan Province, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | | | - Xue Chen
- Department of Biology, Huihua College of Hebei Normal University, Shijiazhuang, 050091, Hebei Province, China
| | - Qing Shi
- College of Life Science, Hebei University, 180 Wusi East, Baoding, 071002, Hebei Province, China
| | - Fanghao Wan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Wang C, Zhou J, Liu J, Jiang K, Xiao H, Du D. Responses of the soil fungal communities to the co-invasion of two invasive species with different cover classes. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20:151-159. [PMID: 29030899 DOI: 10.1111/plb.12646] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 10/09/2017] [Indexed: 06/07/2023]
Abstract
Soil fungal communities play an important role in the successful invasion of non-native species. It is common for two or more invasive plant species to co-occur in invaded ecosystems. This study aimed to determine the effects of co-invasion of two invasive species (Erigeron annuus and Solidago canadensis) with different cover classes on soil fungal communities using high-throughput sequencing. Invasion of E. annuus and/or S. canadensis had positive effects on the sequence number, operational taxonomic unit (OTU) richness, Shannon diversity, abundance-based cover estimator (ACE index) and Chao1 index of soil fungal communities, but negative effects on the Simpson index. Thus, invasion of E. annuus and/or S. canadensis could increase diversity and richness of soil fungal communities but decrease dominance of some members of these communities, in part to facilitate plant further invasion, because high soil microbial diversity could increase soil functions and plant nutrient acquisition. Some soil fungal species grow well, whereas others tend to extinction after non-native plant invasion with increasing invasion degree and presumably time. The sequence number, OTU richness, Shannon diversity, ACE index and Chao1 index of soil fungal communities were higher under co-invasion of E. annuus and S. canadensis than under independent invasion of either individual species. The co-invasion of the two invasive species had a positive synergistic effect on diversity and abundance of soil fungal communities, partly to build a soil microenvironment to enhance competitiveness of the invaders. The changed diversity and community under co-invasion could modify resource availability and niche differentiation within the soil fungal communities, mediated by differences in leaf litter quality and quantity, which can support different fungal/microbial species in the soil.
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Affiliation(s)
- C Wang
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - J Zhou
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - J Liu
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - K Jiang
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - H Xiao
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - D Du
- Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
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14
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Dong L, Yang J, Yu H, He W. Dissecting Solidago canadensis-soil feedback in its real invasion. Ecol Evol 2017; 7:2307-2315. [PMID: 28405294 PMCID: PMC5383496 DOI: 10.1002/ece3.2743] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/08/2016] [Accepted: 12/18/2016] [Indexed: 11/21/2022] Open
Abstract
The importance of plant-soil feedback (PSF) has long been recognized, but the current knowledge on PSF patterns and the related mechanisms mainly stems from laboratory experiments. We aimed at addressing PSF effects on community performance and their determinants using an invasive forb Solidago canadensis. To do so, we surveyed 81 pairs of invaded versus uninvaded plots, collected soil samples from these pairwise plots, and performed an experiment with microcosm plant communities. The magnitudes of conditioning soil abiotic properties and soil biotic properties by S. canadensis were similar, but the direction was opposite; altered abiotic and biotic properties influenced the production of subsequent S. canadensis communities and its abundance similarly. These processes shaped neutral S. canadensis-soil feedback effects at the community level. Additionally, the relative dominance of S. canadensis increased with its ability of competitive suppression in the absence and presence of S. canadensis-soil feedbacks, and S. canadensis-induced decreases in native plant species did not alter soil properties directly. These findings provide a basis for understanding PSF effects and the related mechanisms in the field conditions and also highlight the importance of considering PSFs holistically.
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Affiliation(s)
- Li‐Jia Dong
- State Key Laboratory of Vegetation and Environmental ChangeInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Jian‐Xia Yang
- State Key Laboratory of Vegetation and Environmental ChangeInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Hong‐Wei Yu
- State Key Laboratory of Vegetation and Environmental ChangeInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Wei‐Ming He
- State Key Laboratory of Vegetation and Environmental ChangeInstitute of BotanyChinese Academy of SciencesBeijingChina
- College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijingChina
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Gaya Shivega W, Aldrich-Wolfe L. Native plants fare better against an introduced competitor with native microbes and lower nitrogen availability. AOB PLANTS 2017; 9:plx004. [PMID: 28122737 PMCID: PMC5402526 DOI: 10.1093/aobpla/plx004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/23/2016] [Accepted: 12/22/2016] [Indexed: 05/24/2023]
Abstract
While the soil environment is generally acknowledged as playing a role in plant competition, the relative importance of soil resources and soil microbes in determining outcomes of competition between native and exotic plants has rarely been tested. Resilience of plant communities to invasion by exotic species may depend on the extent to which native and exotic plant performance are mediated by abiotic and biotic components of the soil. We used a greenhouse experiment to compare performance of two native prairie plant species and one exotic species, when grown in intraspecific competition and when each native was grown in interspecific competition with the exotic species, in the presence and absence of a native prairie soil community, and when nitrogen availability was elevated or was maintained at native prairie levels. We found that elevated nitrogen availability was beneficial to the exotic species and had no effect on or was detrimental to the native plant species, that the native microbial community was beneficial to the native plant species and either had no effect or was detrimental to the exotic species, and that intraspecific competition was stronger than interspecific competition for the exotic plant species and vice-versa for the natives. Our results demonstrate that soil nitrogen availability and the soil microbial community can mediate the strength of competition between native and exotic plant species. We found no evidence for native microbes enhancing the performance of the exotic plant species. Instead, loss of the native soil microbial community appears to reinforce the negative effects of elevated N on native plant communities and its benefits to exotic invasive species. Resilience of plant communities to invasion by exotic plant species is facilitated by the presence of an intact native soil microbial community and weakened by anthropogenic inputs of nitrogen.
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Affiliation(s)
- W Gaya Shivega
- Department of Biology, Concordia College, Moorhead, Minnesota 56562, USA
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Menzel A, Hempel S, Klotz S, Moora M, Pyšek P, Rillig MC, Zobel M, Kühn I. Mycorrhizal status helps explain invasion success of alien plant species. Ecology 2016; 98:92-102. [DOI: 10.1002/ecy.1621] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 09/19/2016] [Accepted: 09/30/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Andreas Menzel
- Department of Community Ecology; Helmholtz Centre for Environmental Research-UFZ; Theodor-Lieser-Strasse 4 06120 Halle (Saale) Germany
| | - Stefan Hempel
- Institute of Biology; Dahlem Center for Plant Sciences; Freie Universität Berlin; Altensteinstraße 6 14195 Berlin Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB); 14195 Berlin Germany
| | - Stefan Klotz
- Department of Community Ecology; Helmholtz Centre for Environmental Research-UFZ; Theodor-Lieser-Strasse 4 06120 Halle (Saale) Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Deutscher Platz 5e 04103 Leipzig Germany
| | - Mari Moora
- Institute of Ecology and Earth Sciences; University of Tartu; 40 Lai Street Tartu 51005 Estonia
| | - Petr Pyšek
- Department of Invasion Ecology; Institute of Botany; The Czech Academy of Sciences; CZ-252 43 Průhonice Czech Republic
- Department of Ecology; Faculty of Science; Charles University; Viničná 7 CZ-128 44 Prague 2 Czech Republic
- Department of Botany and Zoology; Centre for Invasion Biology; Stellenbosch University; Matieland 7602 South Africa
| | - Matthias C. Rillig
- Institute of Biology; Dahlem Center for Plant Sciences; Freie Universität Berlin; Altensteinstraße 6 14195 Berlin Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB); 14195 Berlin Germany
| | - Martin Zobel
- Institute of Ecology and Earth Sciences; University of Tartu; 40 Lai Street Tartu 51005 Estonia
| | - Ingolf Kühn
- Department of Community Ecology; Helmholtz Centre for Environmental Research-UFZ; Theodor-Lieser-Strasse 4 06120 Halle (Saale) Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Deutscher Platz 5e 04103 Leipzig Germany
- Institute of Biology/Geobotany and Botanical Garden; Martin-Luther-University Halle-Wittenberg; Am Kirchtor 1 06108 Halle Germany
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Johansen RB, Johnston P, Mieczkowski P, Perry GL, Robeson MS, Burns BR, Vilgalys R. A native and an invasive dune grass share similar, patchily distributed, root-associated fungal communities. FUNGAL ECOL 2016. [DOI: 10.1016/j.funeco.2016.08.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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18
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Parepa M, Bossdorf O. Testing for allelopathy in invasive plants: it all depends on the substrate! Biol Invasions 2016. [DOI: 10.1007/s10530-016-1189-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wang C, Xiao H, Zhao L, Liu J, Wang L, Zhang F, Shi Y, Du D. The allelopathic effects of invasive plant Solidago canadensis on seed germination and growth of Lactuca sativa enhanced by different types of acid deposition. ECOTOXICOLOGY (LONDON, ENGLAND) 2016; 25:555-62. [PMID: 26826094 DOI: 10.1007/s10646-016-1614-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/20/2016] [Indexed: 05/21/2023]
Abstract
Invasive species can exhibit allelopathic effects on native species. Meanwhile, the types of acid deposition are gradually changing. Thus, the allelopathic effects of invasive species on seed germination and growth of native species may be altered or even enhanced under conditions with diversified acid deposition. This study aims to assess the allelopathic effects (using leaves extracts) of invasive plant Solidago canadensis on seed germination and growth of native species Lactuca sativa treated with five types of acid deposition with different SO4(2-) to NO3(-) ratios (1:0, sulfuric acid; 5:1, sulfuric-rich acid; 1:1, mixed acid; 1:5, nitric-rich acid; 0:1, nitric acid). Solidago canadensis leaf extracts exhibited significantly allelopathic effects on germination index, vigor index, and germination rate index of L. sativa. High concentration of S. canadensis leaf extracts also similarly exhibited significantly allelopathic effects on root length of L. sativa. This may be due to that S. canadensis could release allelochemicals and then trigger allelopathic effects on seed germination and growth of L. sativa. Acid deposition exhibited significantly negative effects on seedling biomass, root length, seedling height, germination index, vigor index, and germination rate index of L. sativa. This may be ascribed to the decreased soil pH values mediated by acid deposition which could produce toxic effects on seedling growth. Sulfuric acid deposition triggered more toxic effects on seedling biomass and vigor index of L. sativa than nitric acid deposition. This may be attributing to the difference in exchange capacity with hydroxyl groups (OH(-)) between SO4(2-) and NO3(-) as well as the fertilizing effects mediated by nitric deposition. All types of acid deposition significantly enhanced the allelopathic effects of S. canadensis on root length, germination index, vigor index, and germination rate index of L. sativa. This may be due to the negatively synergistic effects of acid deposition and S. canadensis on seed germination and growth of L. sativa. The ratio of SO4(2-) to NO3(-) in acid deposition was an important factor that profoundly affected the allelopathic effects of S. canadensis on the seed germination and growth of L. sativa possibly because the difference in exchange capacity with hydroxyl groups (OH(-)) between SO4(2-) and NO3(-) as well as the fertilizing effects triggered by nitric deposition. Thus, the allelopathic effects of invasive species on seed germination and growth of native plants might be enhanced under increased and diversified acid deposition.
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Affiliation(s)
- Congyan Wang
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China.
| | - Hongguang Xiao
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China
| | - Lulu Zhao
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China
| | - Jun Liu
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China
| | - Lei Wang
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China
| | - Fei Zhang
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China
| | - Yanchun Shi
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China
| | - Daolin Du
- Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, 212013, China.
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang, 212013, China.
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Dai ZC, Fu W, Wan LY, Cai HH, Wang N, Qi SS, Du DL. Different Growth Promoting Effects of Endophytic Bacteria on Invasive and Native Clonal Plants. FRONTIERS IN PLANT SCIENCE 2016; 7:706. [PMID: 27252722 PMCID: PMC4878316 DOI: 10.3389/fpls.2016.00706] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 05/08/2016] [Indexed: 05/16/2023]
Abstract
The role of the interactions between endophytes and alien plants has been unclear yet in plant invasion. We used a completely germ-free culture system to quantify the plant growth-promoting (PGP) effects of endophytic bacteria Bacillus sp. on aseptic seedlings of Wedelia trilobata and of its native clonal congener W. chinensis. The endophytic bacteria did not affect the growth of W. chinensis, but they significantly promoted the growth of W. trilobata. With the PGP effects of endophytic bacteria, relative change ratios of the clonal traits and the ramets' growth traits of W. trilobata were significantly greater than those of W. chinensis. Our results indicate that the growth-promoting effects of endophytes may differ between invasive and native clonal plants, and the endophytes of invasive plant may be host-specific to facilitate plant invasion.
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Affiliation(s)
- Zhi-Cong Dai
- Institute of Environment and Ecology & Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu UniversityZhenjiang, China
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu UniversityZhenjiang, China
- Jingjiang College, Jiangsu UniversityZhenjiang, China
| | - Wei Fu
- Institute of Environment and Ecology & Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu UniversityZhenjiang, China
| | - Ling-Yun Wan
- Institute of Environment and Ecology & Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu UniversityZhenjiang, China
| | - Hong-Hong Cai
- Institute of Environment and Ecology & Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu UniversityZhenjiang, China
| | - Ning Wang
- Institute of Environment and Ecology & Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu UniversityZhenjiang, China
| | - Shan-Shan Qi
- Institute of Environment and Ecology & Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu UniversityZhenjiang, China
- *Correspondence: Dao-Lin Du, ; Shan-Shan Qi,
| | - Dao-Lin Du
- Institute of Environment and Ecology & Academy of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu UniversityZhenjiang, China
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu UniversityZhenjiang, China
- *Correspondence: Dao-Lin Du, ; Shan-Shan Qi,
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Fenesi A, Geréd J, Meiners SJ, Tóthmérész B, Török P, Ruprecht E. Does disturbance enhance the competitive effect of the invasive Solidago canadensis on the performance of two native grasses? Biol Invasions 2015. [DOI: 10.1007/s10530-015-0954-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Inderjit. Introduction to the Special Issue: The role of soil microbial-driven belowground processes in mediating exotic plant invasions. AOB PLANTS 2015; 7:plv052. [PMID: 25979967 PMCID: PMC4481726 DOI: 10.1093/aobpla/plv052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 04/18/2015] [Indexed: 06/04/2023]
Abstract
Soil microbial communities are one of the multiple factors that facilitate or resist plant invasion. Regional and biogeographic studies help to determine how soil communities and the processes mediated by soil microbes are linked to other mechanisms of invasion. Both the success of plant invasions and their impacts are profoundly influenced by a wide range of soil communities and the soil processes mediated by them. With an aim to better understand the mechanisms responsible for the soil community-driven routes, a special issue of AoB PLANTS was conceived. I hope that the range of papers included in the special issue will reveal some of the complexities in soil community-mediated plant invasion.
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Affiliation(s)
- Inderjit
- Department of Environmental Studies, Centre for Environmental Management of Degraded Ecosystems (CEMDE), University of Delhi, Delhi 110007, India
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Inderjit, Cahill JF. Linkages of plant-soil feedbacks and underlying invasion mechanisms. AOB PLANTS 2015; 7:plv022. [PMID: 25784668 PMCID: PMC4404623 DOI: 10.1093/aobpla/plv022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 03/04/2015] [Indexed: 05/24/2023]
Abstract
Soil microbial communities and processes have repeatedly been shown to impact plant community assembly and population growth. Soil-driven effects may be particularly pronounced with the introduction of plants to non-native ranges, as introduced plants are not typically accompanied by transference of local soil communities. Here we describe how the mechanisms by which soil community processes influence plant growth overlap with several known and well-described mechanisms of plant invasion. Critically, a given soil community process may either facilitate or limit invasion, depending upon local conditions and the specific mechanisms of soil processes involved. Additionally, as soil communities typically consist of species with short generation times, the net consequences of plant-soil feedbacks for invasion trajectories are likely to change over time, as ecological and evolutionary adjustments occur. Here we provide an overview of the ecological linkages of plant-soil feedbacks and underlying mechanisms of invasion.
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Affiliation(s)
- Inderjit
- Department of Environmental Studies, Centre for Environmental Management of Degraded Ecosystems (CEMDE), University of Delhi, Delhi 110007, India
| | - James F Cahill
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
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Zhang L, Zhang Y, Zou J, Siemann E. Decomposition of Phragmites australis litter retarded by invasive Solidago canadensis in mixtures: an antagonistic non-additive effect. Sci Rep 2014; 4:5488. [PMID: 24976274 PMCID: PMC4074794 DOI: 10.1038/srep05488] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 06/10/2014] [Indexed: 11/10/2022] Open
Abstract
Solidago canadensis is an aggressive invader in China. Solidago invasion success is partially attributed to allelopathic compounds release and more benefits from AM fungi, which potentially makes the properties of Solidago litter different from co-occurring natives. These properties may comprehensively affect litter decomposition of co-occurring natives. We conducted a field experiment to examine litter mixing effects in a Phragmites australis dominated community invaded by Solidago in southeast China. Solidago had more rapid mass and N loss rate than Phragmites when they decomposed separately. Litter mixing decreased N loss rate in Phragmites litter and increased that of Solidago. Large decreases in Phragmites mass loss and smaller increases in Solidago mass loss caused negative non-additive effect. Solidago litter extracts reduced soil C decomposition and N processes, suggested an inhibitory effect of Solidago secondary compounds. These results are consistent with the idea that nutrient transfer and secondary compounds both affected litter mixtures decomposition.
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Affiliation(s)
- Ling Zhang
- College of Resources & Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Department of Ecology & Evolutionary Biology, Rice University, Houston, TX 77005, USA
| | - Yaojun Zhang
- College of Resources & Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jianwen Zou
- College of Resources & Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Department of Horticulture, Cornell University, Ithaca, NY 14853, USA
| | - Evan Siemann
- College of Resources & Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Department of Ecology & Evolutionary Biology, Rice University, Houston, TX 77005, USA
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Parepa M, Schaffner U, Bossdorf O. Help from under ground: soil biota facilitate knotweed invasion. Ecosphere 2013. [DOI: 10.1890/es13-00011.1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Armas C, Pugnaire FI. Plant neighbour identity matters to belowground interactions under controlled conditions. PLoS One 2011; 6:e27791. [PMID: 22114696 PMCID: PMC3219686 DOI: 10.1371/journal.pone.0027791] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 10/25/2011] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Root competition is an almost ubiquitous feature of plant communities with profound effects on their structure and composition. Far beyond the traditional view that plants interact mainly through resource depletion (exploitation competition), roots are known to be able to interact with their environment using a large variety of mechanisms that may inhibit or enhance access of other roots to the resource or affect plant growth (contest interactions). However, an extensive analysis on how these contest root interactions may affect species interaction abilities is almost lacking. METHODOLOGY/PRINCIPAL FINDINGS In a common garden experiment with ten perennial plant species we forced pairs of plants of the same or different species to overlap their roots and analyzed how belowground contest interactions affected plant performance, biomass allocation patterns, and competitive abilities under abundant resource supply. Our results showed that net interaction outcome ranged from negative to positive, affecting total plant mass and allocation patterns. A species could be a strong competitor against one species, weaker against another one, and even facilitator to a third species. This leads to sets of species where competitive hierarchies may be clear but also to groups where such rankings are not, suggesting that intransitive root interactions may be crucial for species coexistence. CONCLUSIONS/SIGNIFICANCE The outcome of belowground contest interactions is strongly dependent on neighbours' identity. In natural plant communities this conditional outcome may hypothetically help species to interact in non-hierarchical and intransitive networks, which in turn might promote coexistence.
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Affiliation(s)
- Cristina Armas
- Grupo de Ecología Funcional, Departmento de Ecología Funcional y Evolutiva, Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, Almería, Spain.
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Baynes M, Newcombe G, Dixon L, Castlebury L, O'Donnell K. A novel plant-fungal mutualism associated with fire. Fungal Biol 2011; 116:133-44. [PMID: 22208608 DOI: 10.1016/j.funbio.2011.10.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 09/07/2011] [Accepted: 10/25/2011] [Indexed: 10/15/2022]
Abstract
Bromus tectorum, or cheatgrass, is native to Eurasia and widely invasive in western North America. By late spring, this annual plant has dispersed its seed and died; its aboveground biomass then becomes fine fuel that burns as frequently as once every 3-5 y in its invaded range. Cheatgrass has proven to be better adapted to fire there than many competing plants, but the contribution of its fungal symbionts to this adaptation had not previously been studied. In sampling cheatgrass endophytes, many fire-associated fungi were found, including Morchella in three western states (New Mexico, Idaho, and Washington). In greenhouse experiments, a New Mexico isolate of Morchella increased both the biomass and fecundity of its local cheatgrass population, thus simultaneously increasing both the probability of fire and survival of that event, via more fuel and a greater, belowground seed bank, respectively. Re-isolation efforts proved that Morchella could infect cheatgrass roots in a non-mycorrhizal manner and then grow up into aboveground tissues. The same Morchella isolate also increased survival of seed exposed to heat typical of that which develops in the seed bank during a cheatgrass fire. Phylogenetic analysis of Eurasian and North American Morchella revealed that this fire-associated mutualism was evolutionarily novel, in that cheatgrass isolates belonged to two phylogenetically distinct species, or phylotypes, designated Mel-6 and Mel-12 whose evolutionary origin appears to be within western North America. Mutualisms with fire-associated fungi may be contributing to the cheatgrass invasion of western North America.
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Affiliation(s)
- Melissa Baynes
- Environmental Science Program, University of Idaho, Moscow, ID 83844-3006, USA.
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