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Ding M, Dai H, He Y, Liang T, Zhai Z, Zhang S, Hu B, Cai H, Dai B, Xu Y, Zhang Y. Continuous cropping system altered soil microbial communities and nutrient cycles. Front Microbiol 2024; 15:1374550. [PMID: 38680924 PMCID: PMC11045989 DOI: 10.3389/fmicb.2024.1374550] [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: 01/22/2024] [Accepted: 03/29/2024] [Indexed: 05/01/2024] Open
Abstract
Understanding the response of microbial communities and their potential functions is essential for sustainability of agroecosystems under long-term continuous cropping. However, limited research has focused on investigating the interaction between soil physicochemical factors and microbial community dynamics in agroecosystems under long-term continuous cropping. This study probed into the physicochemical properties, metabolites, and microbial diversity of tobacco rhizosphere soils cropped continuously for 0, 5, and 20 years. The relative abundance of bacterial genera associated with nutrient cycling (e.g., Sphingomonas) increased while potential plant pathogenic fungi and beneficial microorganisms showed synergistic increases with the duration of continuous cropping. Variations in soil pH, alkeline nitrogen (AN) content, and soil organic carbon (SOC) content drove the shifts in soil microbial composition. Metabolites such as palmitic acid, 3-hydroxypropionic acid, stearic acid, and hippuric acid may play a key role in soil acidification. Those results enhance our ability to predict shifts in soil microbial community structure associated with anthropogenic continuous cropping, which can have long-term implications for crop production.
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Affiliation(s)
- Mengjiao Ding
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
- College of Tobacco Science of Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory for Tobacco Quality, College of Tobacco Science, Guizhou University, Guiyang, China
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China
| | - Huaxin Dai
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Yi He
- Guizhou Tobacco Company Bijie Region Tobacco Company, Bijie, China
| | - Taibo Liang
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Zhen Zhai
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Shixiang Zhang
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Binbin Hu
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, China
| | - Heqing Cai
- Guizhou Tobacco Company Bijie Region Tobacco Company, Bijie, China
| | - Bin Dai
- Guizhou Tobacco Company Bijie Region Tobacco Company, Bijie, China
| | - Yadong Xu
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China
| | - Yanling Zhang
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
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Revillini D, David AS, Reyes AL, Knecht LD, Vigo C, Allen P, Searcy CA, Afkhami ME. Allelopathy-selected microbiomes mitigate chemical inhibition of plant performance. THE NEW PHYTOLOGIST 2023; 240:2007-2019. [PMID: 37737029 DOI: 10.1111/nph.19249] [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: 07/11/2023] [Accepted: 08/01/2023] [Indexed: 09/23/2023]
Abstract
Allelopathy is a common and important stressor that shapes plant communities and can alter soil microbiomes, yet little is known about the direct effects of allelochemical addition on bacterial and fungal communities or the potential for allelochemical-selected microbiomes to mediate plant performance responses, especially in habitats naturally structured by allelopathy. Here, we present the first community-wide investigation of microbial mediation of allelochemical effects on plant performance by testing how allelopathy affects soil microbiome structure and how these microbial changes impact germination and productivity across 13 plant species. The soil microbiome exhibited significant changes to 'core' bacterial and fungal taxa, bacterial composition, abundance of functionally important bacterial and fungal taxa, and predicted bacterial functional genes after the addition of the dominant allelochemical native to this habitat. Furthermore, plant performance was mediated by the allelochemical-selected microbiome, with allelopathic inhibition of plant productivity moderately mitigated by the microbiome. Through our findings, we present a potential framework to understand the strength of plant-microbial interactions in the presence of environmental stressors, in which frequency of the ecological stress may be a key predictor of microbiome-mediation strength.
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Affiliation(s)
- Daniel Revillini
- Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, Florida, 33146, USA
| | - Aaron S David
- Archbold Biological Station, 123 Main Drive, Venus, Florida, 33960, USA
| | - Alma L Reyes
- Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, Florida, 33146, USA
| | - Leslie D Knecht
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida, 33146, USA
| | - Carolina Vigo
- Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, Florida, 33146, USA
| | - Preston Allen
- Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, Florida, 33146, USA
| | - Christopher A Searcy
- Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, Florida, 33146, USA
| | - Michelle E Afkhami
- Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, Florida, 33146, USA
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Afzal MR, Naz M, Ashraf W, Du D. The Legacy of Plant Invasion: Impacts on Soil Nitrification and Management Implications. PLANTS (BASEL, SWITZERLAND) 2023; 12:2980. [PMID: 37631191 PMCID: PMC10458916 DOI: 10.3390/plants12162980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
Plant invasions can have long-lasting impacts on soil nitrification, which plays a critical role in nutrient cycling and plant growth. This review examines the legacy effects of plant invasion on soil nitrification, focusing on the underlying mechanisms, context dependence, and implications for management. We synthesize literature on the positive, negative and neutral legacy effects of plant invasion on soil nitrification, highlighting the complexity of these effects and the need for further research to fully understand them. Positive legacy effects include increased soil microbial biomass or activity, potentially enhancing nutrient availability for plants. However, negative legacy effects, like reduced nitrifier abundance, can result in decreased soil nitrification rates and nutrient availability. In some cases, changes to nitrification during active invasion appear transitory after the removal of invasive plants, indicating neutral short-term legacies. We discuss the context dependence of legacy effects considering factors, including location, specific invasive plant species, and other environmental conditions. Furthermore, we discuss the implications of these legacy effects for management and restoration strategies, such as the removal or control of invasive plants, and potential approaches for restoring ecosystems with legacy effects on soil nitrification. Finally, we highlight future research directions, including further investigation into the mechanisms and context dependence of legacy effects, and the role of plant-microbe interactions. Overall, this review provides insights into the legacy effects of plant invasion on soil nitrification and their implications for ecosystems.
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Affiliation(s)
- Muhammad Rahil Afzal
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China;
| | - Misbah Naz
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China;
| | - Waqas Ashraf
- Soil and Water Testing Laboratory for Research, Ayub Agricultural Research Institute Faisalabad, Punjab 38850, Pakistan;
| | - Daolin Du
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China;
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Xu K, Liu X, Zhao C, Pan Q, Chen X, Jiang N, Du C, Xu Y, Shao M, Qu B. Nitrogen deposition further increases Ambrosia trifida root exudate invasiveness under global warming. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:759. [PMID: 37249649 DOI: 10.1007/s10661-023-11380-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/09/2023] [Indexed: 05/31/2023]
Abstract
Invasive plants can change the soil ecological environment in the invasion area to adapt to their growth and reproduction through root exudates. Root exudates are the most direct manifestation of plant responses to external environmental changes, but there is a lack of studies on root exudates of invasive plants in the context of inevitable global warming and nitrogen deposition. In this research, we used widely targeted metabolomics to investigate Ambrosia trifida root exudates during seedling and maturity under warming and nitrogen deposition to reveal the possible mechanisms of A. trifida adaptation to climate change. The results showed that the organic acids increased under warming condition but decreased after nitrogen addition in the seedling stage. Phenolic acids increased greatly after nitrogen addition in the mature stage. Most phenolic acids were annotated in the phenylpropane metabolic pathway and tyrosine metabolism. Therefore, nitrogen deposition may increase the adaptability of A. trifida through root exudates, making it more invasive under global warming. The results provide new ideas for preventing and controlling the invasion of A. trifida under climate change.
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Affiliation(s)
- Ke Xu
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China.
| | - Xinyue Liu
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Changxin Zhao
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Qingmin Pan
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Xiaoxing Chen
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Ning Jiang
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Cuiping Du
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Yufeng Xu
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Meini Shao
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China
| | - Bo Qu
- Liaoning Key Laboratory of Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang, China.
- Liaoning Panjin Wetland Ecosystem National Observation and Research Station, Shenyang, 110866, China.
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Barta CÉ, Jenkins BC, Lindstrom DS, Zahnd AK, Székely G. The First Evidence of Gibberellic Acid's Ability to Modulate Target Species' Sensitivity to Honeysuckle ( Lonicera maackii) Allelochemicals. PLANTS (BASEL, SWITZERLAND) 2023; 12:1014. [PMID: 36903875 PMCID: PMC10005159 DOI: 10.3390/plants12051014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/20/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Invasive species employ competitive strategies such as releasing allelopathic chemicals into the environment that negatively impact native species. Decomposing Amur honeysuckle (Lonicera maackii) leaves leach various allelopathic phenolics into the soil, decreasing the vigor of several native species. Notable differences in the net negative impacts of L. maackii metabolites on target species were argued to depend on soil properties, the microbiome, the proximity to the allelochemical source, the allelochemical concentration, or environmental conditions. This study is the first to address the role of target species' metabolic properties in determining their net sensitivity to allelopathic inhibition by L. maackii. Gibberellic acid (GA3) is a critical regulator of seed germination and early development. We hypothesized that GA3 levels might affect the target sensitivity to allelopathic inhibitors and evaluated differences in the response of a standard (control, Rbr), a GA3-overproducing (ein), and a GA3-deficient (ros) Brassica rapa variety to L. maackii allelochemicals. Our results demonstrate that high GA3 concentrations substantially alleviate the inhibitory effects of L. maackii allelochemicals. A better understanding of the importance of target species' metabolic properties in their responses to allelochemicals will contribute to developing novel invasive species control and biodiversity conservation protocols and may contribute to applications in agriculture.
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Affiliation(s)
- Csengele Éva Barta
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Brian Colby Jenkins
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Devon Shay Lindstrom
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Alyka Kay Zahnd
- Department of Biology, Missouri Western State University, 4525 Downs Drive, Agenstein-Remington Halls, St. Joseph, MO 64507, USA
| | - Gyöngyi Székely
- Hungarian Department of Biology and Ecology, Faculty of Biology and Geology, Babeș-Bolyai University, 5-7 Clinicilor St., 400006 Cluj-Napoca, Romania
- Institute for Research-Development-Innovation in Applied Natural Sciences, Babeș-Bolyai University, 30 Fântânele St., 400294 Cluj-Napoca, Romania
- Centre for Systems Biology, Biodiversity and Bioresources (3B), Babeș-Bolyai University, 5-7 Clinicilor St., 400006 Cluj-Napoca, Romania
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Singh M, Daehler CC. Meta-analytic evidence that allelopathy may increase the success and impact of invasive grasses. PeerJ 2023; 11:e14858. [PMID: 36846446 PMCID: PMC9951799 DOI: 10.7717/peerj.14858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/16/2023] [Indexed: 02/23/2023] Open
Abstract
Background In the grass family, a disproportionate number of species have been designated as being invasive. Various growth traits have been proposed to explain the invasiveness of grasses; however, the possibility that allelopathy gives invasive grasses a competitive advantage has attracted relatively little attention. Recent research has isolated plant allelochemicals that are mostly specific to the grass family that can breakdown into relatively stable, toxic byproducts. Methods We conducted a meta-analysis of studies on grass allelopathy to test three prominent hypotheses from invasion biology and competition theory: (1) on native recipients, non-native grasses will have a significantly more negative effect compared to native grasses (Novel Weapons Hypothesis); (2) among native grasses, their effect on non-native recipients will be significantly more negative compared to their effect on native recipients (Biotic Resistance Hypothesis); and (3) allelopathic impacts will increase with phylogenetic distance (Phylogenetic Distance Hypothesis). From 23 studies, we gathered a dataset of 524 observed effect sizes (delta log response ratios) measuring the allelopathic impact of grasses on growth and germination of recipient species, and we used non-linear mixed-effects Bayesian modeling to test the hypotheses. Results We found support for the Novel Weapons Hypothesis: on native recipients, non-native grasses were twice as suppressive as native grasses (22% vs 11%, respectively). The Phylogenetic Distance Hypothesis was supported by our finding of a significant correlation between phylogenetic distance and allelopathic impact. The Biotic Resistance Hypothesis was not supported. Overall, this meta-analysis adds to the evidence that allelochemicals may commonly contribute to successful or high impact invasions in the grass family. Increased awareness of the role of allelopathy in soil legacy effects associated with grass invasions may improve restoration outcomes through implementation of allelopathy-informed restoration practices. Examples of allelopathy-informed practices, and the knowledge needed to utilize them effectively, are discussed, including the use of activated carbon to neutralize allelochemicals and modify the soil microbial community.
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Daly EZ, Chabrerie O, Massol F, Facon B, Hess MC, Tasiemski A, Grandjean F, Chauvat M, Viard F, Forey E, Folcher L, Buisson E, Boivin T, Baltora‐Rosset S, Ulmer R, Gibert P, Thiébaut G, Pantel JH, Heger T, Richardson DM, Renault D. A synthesis of biological invasion hypotheses associated with the introduction–naturalisation–invasion continuum. OIKOS 2023. [DOI: 10.1111/oik.09645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ella Z. Daly
- Univ. of Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Evolution), UMR 6553 Rennes France
| | - Olivier Chabrerie
- Univ. de Picardie Jules Verne, UMR 7058 CNRS EDYSAN Amiens Cedex 1 France
| | - Francois Massol
- Univ. Lille, CNRS, Inserm, CHU Lille, Inst. Pasteur de Lille, U1019 – UMR 9017 – CIIL – Center for Infection and Immunity of Lille Lille France
| | - Benoit Facon
- CBGP, INRAE, CIRAD, IRD, Montpellier Institut Agro, Univ. Montpellier Montpellier France
| | - Manon C.M. Hess
- Inst. Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale (IMBE), UMR: Aix Marseille Univ., Avignon Université, CNRS, IRD France
- Inst. de Recherche pour la Conservation des zones Humides Méditerranéennes Tour du Valat, Le Sambuc Arles France
| | - Aurélie Tasiemski
- Univ. Lille, CNRS, Inserm, CHU Lille, Inst. Pasteur de Lille, U1019 – UMR 9017 – CIIL – Center for Infection and Immunity of Lille Lille France
| | - Frédéric Grandjean
- Univ. de Poitiers, UMR CNRS 7267 EBI‐Ecologie et Biologie des Interactions, équipe EES Poitiers Cedex 09 France
| | | | | | - Estelle Forey
- Normandie Univ., UNIROUEN, INRAE, USC ECODIV Rouen France
| | - Laurent Folcher
- ANSES – Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail, Laboratoire de la Santé des Végétaux – Unité de Nématologie Le Rheu France
| | - Elise Buisson
- Inst. Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale (IMBE), UMR: Aix Marseille Univ., Avignon Université, CNRS, IRD France
| | - Thomas Boivin
- INRAE, UR629 Écologie des Forêts Méditerranéennes, Centre de Recherche Provence‐Alpes‐Côte d'Azur Avignon France
| | | | - Romain Ulmer
- Univ. de Picardie Jules Verne, UMR 7058 CNRS EDYSAN Amiens Cedex 1 France
| | - Patricia Gibert
- UMR 5558 CNRS – Univ. Claude Bernard Lyon 1, Biométrie et Biologie Evolutive, Bât. Gregor Mendel Villeurbanne Cedex France
| | - Gabrielle Thiébaut
- Univ. of Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Evolution), UMR 6553 Rennes France
| | - Jelena H. Pantel
- Ecological Modelling, Faculty of Biology, Univ. of Duisburg‐Essen Essen Germany
| | - Tina Heger
- Leibniz Inst. of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
- Technical Univ. of Munich, Restoration Ecology Freising Germany
| | - David M. Richardson
- Centre for Invasion Biology, Dept. Botany & Zoology, Stellenbosch University Stellenbosch South Africa
- Inst. of Botany, Czech Academy of Sciences Průhonice Czech Republic
| | - David Renault
- Univ. of Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Evolution), UMR 6553 Rennes France
- Inst. Universitaire de France Paris Cedex 05 France
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Li M, Wei Y, Yin Y, Zhu W, Bai X, Zhou Y. Characteristics of Soil Physicochemical Properties and Microbial Community of Mulberry ( Morus alba L.) and Alfalfa ( Medicago sativa L.) Intercropping System in Northwest Liaoning. Microorganisms 2023; 11:microorganisms11010114. [PMID: 36677406 PMCID: PMC9861424 DOI: 10.3390/microorganisms11010114] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/04/2023] Open
Abstract
Medicinal plant intercropping is a new intercropping method. However, as a new intercropping model, the influence of intercropping of alfalfa on microorganisms has not been clarified clearly. In this study, the composition and diversity of microbial communities in alfalfa intercropping were studied, and the differences of bacterial and fungal communities and their relationships with environmental factors are discussed. Intercropping significantly decreased soil pH and significantly increased soil total phosphorus (TP) content, but did not increase soil total carbon (TC) and total nitrogen (TN). Intercropping can increase the relative abundance of Actinobacteria and reduce the relative abundance of Proteobacteria in soil. The relative abundance and diversity of bacteria were significantly correlated with soil pH and TP, while the diversity of fungi was mainly correlated with TC, TN and soil ecological stoichiometry. The bacterial phylum was mainly related to pH and TP, while the fungal phylum was related to TC, TN, C: P and N: P. The present study revealed the stoichiometry of soil CNP and microbial community characteristics of mulberry-alfalfa intercropping soil, clarified the relationship between soil stoichiometry and microbial community composition and diversity, and provided a theoretical basis for the systematic management of mulberry-alfalfa intercropping in northwest Liaoning.
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Affiliation(s)
- Muzi Li
- Institute of Modern Agricultural Research, Dalian University, Dalian 116622, China
- Shenyang Agricultural University, Shenyang 110866, China
| | - Yawei Wei
- Shenyang Agricultural University, Shenyang 110866, China
- Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Tieling 112000, China
| | - You Yin
- Shenyang Agricultural University, Shenyang 110866, China
- Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Tieling 112000, China
| | - Wenxu Zhu
- Shenyang Agricultural University, Shenyang 110866, China
- Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Tieling 112000, China
| | - Xuejiao Bai
- Shenyang Agricultural University, Shenyang 110866, China
- Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Tieling 112000, China
- Correspondence: (X.B.); (Y.Z.); Tel.: +86-13909819088 (Y.Z.)
| | - Yongbin Zhou
- Institute of Modern Agricultural Research, Dalian University, Dalian 116622, China
- Life Science and Technology College, Dalian University, Dalian 116622, China
- Correspondence: (X.B.); (Y.Z.); Tel.: +86-13909819088 (Y.Z.)
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Xu Z, Zuo L, Zhang Y, Huang R, Li L. Is allelochemical synthesis in Casuarina equisetifolia plantation related to litter microorganisms? FRONTIERS IN PLANT SCIENCE 2022; 13:1022984. [PMID: 36407626 PMCID: PMC9666782 DOI: 10.3389/fpls.2022.1022984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Productivity decline of Casuarina equisetifolia plantation and difficulty in natural regeneration remains a serious problem because of allelopathy. Previous studies have confirmed that 2,4-di-tert-butylphenol (2,4-DTBP) are the major allelochemicals of the C. equisetifolia litter exudates. The production of these allelochemicals may derive from decomposition of litter or from the litter endophyte and microorganisms adhering to litter surfaces. In the present study, we aimed to evaluate the correlation between allelochemicals in litter and endophytic and epiphytic fungi and bacteria from litter. A total of 100 fungi and 116 bacteria were isolated from the interior and surface of litter of different forest ages (young, half-mature, and mature plantation). Results showed that the fermentation broth of fungal genera Mycosphaerella sp. and Pestalotiopsis sp., and bacterial genera Bacillus amyloliquefaciens, Burkholderia-Paraburkholderia, and Pantoea ananatis had the strongest allelopathic effect on C. equisetifolia seeds. Allelochemicals, such as 2,4-DTBP and its analogs were identified in the fermentation broths of these microorganisms using GC/MS analysis. These results indicate that endophytic and epiphytic fungi and bacteria in litters are involved in the synthesis of allelochemicals of C. equisetifolia. To further determine the abundance of the allelopathic fungi and bacteria, Illumina MiSeq high-throughput sequencing was performed. The results showed that bacterial genera with strong allelopathic potential were mainly distributed in the young and half-mature plantation with low abundance, while the abundance of fungal genera Mycosphaerella sp. and Pestalotiopsis sp. were higher in the young and mature plantations. In particular, the abundance of Mycosphaerella sp. in the young and mature plantations were 501.20% and 192.63% higher than in the half-mature plantation, respectively. Overall, our study demonstrates that the litter fungi with higher abundance in the young and mature plantation were involved in the synthesis of the allelochemical 2,4-DTBP of C. equisetifolia. This finding may be important for understanding the relationship between autotoxicity and microorganism and clarifying the natural regeneration problem of C. equisetifolia.
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Mishra AK, Sudalaimuthuasari N, Hazzouri KM, Saeed EE, Shah I, Amiri KMA. Tapping into Plant-Microbiome Interactions through the Lens of Multi-Omics Techniques. Cells 2022; 11:3254. [PMID: 36291121 PMCID: PMC9600287 DOI: 10.3390/cells11203254] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 10/21/2023] Open
Abstract
This review highlights the pivotal role of root exudates in the rhizosphere, especially the interactions between plants and microbes and between plants and plants. Root exudates determine soil nutrient mobilization, plant nutritional status, and the communication of plant roots with microbes. Root exudates contain diverse specialized signaling metabolites (primary and secondary). The spatial behavior of these metabolites around the root zone strongly influences rhizosphere microorganisms through an intimate compatible interaction, thereby regulating complex biological and ecological mechanisms. In this context, we reviewed the current understanding of the biological phenomenon of allelopathy, which is mediated by phytotoxic compounds (called allelochemicals) released by plants into the soil that affect the growth, survival, development, ecological infestation, and intensification of other plant species and microbes in natural communities or agricultural systems. Advances in next-generation sequencing (NGS), such as metagenomics and metatranscriptomics, have opened the possibility of better understanding the effects of secreted metabolites on the composition and activity of root-associated microbial communities. Nevertheless, understanding the role of secretory metabolites in microbiome manipulation can assist in designing next-generation microbial inoculants for targeted disease mitigation and improved plant growth using the synthetic microbial communities (SynComs) tool. Besides a discussion on different approaches, we highlighted the advantages of conjugation of metabolomic approaches with genetic design (metabolite-based genome-wide association studies) in dissecting metabolome diversity and understanding the genetic components of metabolite accumulation. Recent advances in the field of metabolomics have expedited comprehensive and rapid profiling and discovery of novel bioactive compounds in root exudates. In this context, we discussed the expanding array of metabolomics platforms for metabolome profiling and their integration with multivariate data analysis, which is crucial to explore the biosynthesis pathway, as well as the regulation of associated pathways at the gene, transcript, and protein levels, and finally their role in determining and shaping the rhizomicrobiome.
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Affiliation(s)
- Ajay Kumar Mishra
- Khalifa Centre for Genetic Engineering and Biotechnology, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Naganeeswaran Sudalaimuthuasari
- Khalifa Centre for Genetic Engineering and Biotechnology, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Khaled M. Hazzouri
- Khalifa Centre for Genetic Engineering and Biotechnology, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Esam Eldin Saeed
- Khalifa Centre for Genetic Engineering and Biotechnology, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Iltaf Shah
- Department of Chemistry (Biochemistry), College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Khaled M. A. Amiri
- Khalifa Centre for Genetic Engineering and Biotechnology, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Department of Biology, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
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11
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Branco S, Schauster A, Liao HL, Ruytinx J. Mechanisms of stress tolerance and their effects on the ecology and evolution of mycorrhizal fungi. THE NEW PHYTOLOGIST 2022; 235:2158-2175. [PMID: 35713988 DOI: 10.1111/nph.18308] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/11/2022] [Indexed: 05/25/2023]
Abstract
Stress is ubiquitous and disrupts homeostasis, leading to damage, decreased fitness, and even death. Like other organisms, mycorrhizal fungi evolved mechanisms for stress tolerance that allow them to persist or even thrive under environmental stress. Such mechanisms can also protect their obligate plant partners, contributing to their health and survival under hostile conditions. Here we review the effects of stress and mechanisms of stress response in mycorrhizal fungi. We cover molecular and cellular aspects of stress and how stress impacts individual fitness, physiology, growth, reproduction, and interactions with plant partners, along with how some fungi evolved to tolerate hostile environmental conditions. We also address how stress and stress tolerance can lead to adaptation and have cascading effects on population- and community-level diversity. We argue that mycorrhizal fungal stress tolerance can strongly shape not only fungal and plant physiology, but also their ecology and evolution. We conclude by pointing out knowledge gaps and important future research directions required for both fully understanding stress tolerance in the mycorrhizal context and addressing ongoing environmental change.
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Affiliation(s)
- Sara Branco
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, 80204, USA
| | - Annie Schauster
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, 80204, USA
| | - Hui-Ling Liao
- North Florida Research and Education Center, University of Florida, Quincy, FL, 32351, USA
- Soil and Water Sciences Department, University of Florida, Gainesville, FL, 32611, USA
| | - Joske Ruytinx
- Research Groups Microbiology and Plant Genetics, Vrije Universiteit Brussel, 1050, Brussels, Belgium
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12
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Cui MH, Chen XY, Yin FX, Xia GM, Yi Y, Zhang YB, Liu SW, Li F. Hybridization affects the structure and function of root microbiome by altering gene expression in roots of wheat introgression line under saline-alkali stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155467. [PMID: 35489489 DOI: 10.1016/j.scitotenv.2022.155467] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
The mutually beneficial relationship between plants and their root microbiota is essential for plants to adapt to unfavorable environments. However, the molecular mechanism of wheat regulating the structure of root microbiome and the influence of distant hybridization on this process are poorly understood. In this study, we systematically compared the root transcriptome and microbiome between a saline-alkali tolerant wheat introgression line SR4 (derived from somatic hybridization between wheat and tall wheatgrass) and its parent wheat variety JN177. The results indicated that root microorganisms were key factor maintaining better homeostasis of the sodium and potassium ion contents in SR4 than in JN177 under saline-alkali stress. Through systematic comparisons, we identified SR4-specific root bacterial and fungal taxa under saline-alkali stress. Through a weighted gene correlation network analysis (WGCNA) combining microbiome and transcriptome data, key functional genes and pathways, which were strongly related to root bacteria and fungi with differential abundance between JN177 and SR4, were identified. These results suggest that somatic hybridization has altered the key genes regulating root microbiome in wheat, further improving the saline-alkali tolerance of wheat introgression line. These findings provide the key bacterial and fungal taxa and functional target genes for wheat root microbiome engineering under saline-alkali stress.
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Affiliation(s)
- Ming-Han Cui
- Key Laboratory of Plant Physiology and Developmental Regulation, School of Life Sciences, Guizhou Normal University, 116 Baoshan Road (N), Guiyang, Guizhou 550001, China; Key Laboratory of Plant Development and and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao 266237, China
| | - Xiang-Yu Chen
- Key Laboratory of Plant Development and and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao 266237, China
| | - Feng-Xiang Yin
- Key Laboratory of Plant Development and and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao 266237, China
| | - Guang-Min Xia
- Key Laboratory of Plant Development and and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao 266237, China
| | - Yin Yi
- Key Laboratory of Plant Physiology and Developmental Regulation, School of Life Sciences, Guizhou Normal University, 116 Baoshan Road (N), Guiyang, Guizhou 550001, China
| | - Yu-Bin Zhang
- Key Laboratory of Plant Physiology and Developmental Regulation, School of Life Sciences, Guizhou Normal University, 116 Baoshan Road (N), Guiyang, Guizhou 550001, China
| | - Shu-Wei Liu
- Key Laboratory of Plant Development and and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao 266237, China.
| | - Fei Li
- Key Laboratory of Plant Physiology and Developmental Regulation, School of Life Sciences, Guizhou Normal University, 116 Baoshan Road (N), Guiyang, Guizhou 550001, China.
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13
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Shahzad GIR, Passera A, Maldera G, Casati P, Marcello I, Bianco PA. Biocontrol Potential of Endophytic Plant-Growth-Promoting Bacteria against Phytopathogenic Viruses: Molecular Interaction with the Host Plant and Comparison with Chitosan. Int J Mol Sci 2022; 23:6990. [PMID: 35805989 PMCID: PMC9266900 DOI: 10.3390/ijms23136990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 11/16/2022] Open
Abstract
Endophytic plant-growth-promoting bacteria (ePGPB) are interesting tools for pest management strategies. However, the molecular interactions underlying specific biocontrol effects, particularly against phytopathogenic viruses, remain unexplored. Herein, we investigated the antiviral effects and triggers of induced systemic resistance mediated by four ePGPB (Paraburkholderia fungorum strain R8, Paenibacillus pasadenensis strain R16, Pantoea agglomerans strain 255-7, and Pseudomonas syringae strain 260-02) against four viruses (Cymbidium Ring Spot Virus-CymRSV; Cucumber Mosaic Virus-CMV; Potato Virus X-PVX; and Potato Virus Y-PVY) on Nicotiana benthamiana plants under controlled conditions and compared them with a chitosan-based resistance inducer product. Our studies indicated that ePGPB- and chitosan-treated plants presented well-defined biocontrol efficacy against CymRSV and CMV, unlike PVX and PVY. They exhibited significant reductions in symptom severity while promoting plant height compared to nontreated, virus-infected controls. However, these phenotypic traits showed no association with relative virus quantification. Moreover, the tested defense-related genes (Enhanced Disease Susceptibility-1 (EDS1), Non-expressor of Pathogenesis-related genes-1 (NPR1), and Pathogenesis-related protein-2B (PR2B)) implied the involvement of a salicylic-acid-related defense pathway triggered by EDS1 gene upregulation.
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Affiliation(s)
| | | | | | | | - Iriti Marcello
- Department of Agricultural and Environmental Sciences-Production, Landscape, Agroecology, University of Milan, 20133 Milan, Italy; (G.-i.-R.S.); (A.P.); (G.M.); (P.C.); (P.A.B.)
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14
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Shi K, Shao H. Changes in the Soil Fungal Community Mediated by a Peganum harmala Allelochemical. Front Microbiol 2022; 13:911836. [PMID: 35783431 PMCID: PMC9243656 DOI: 10.3389/fmicb.2022.911836] [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: 04/03/2022] [Accepted: 05/11/2022] [Indexed: 11/17/2022] Open
Abstract
Plants can release phytotoxic allelochemicals into the environment, not only to suppress other plants’ growth, but also alter community structure of soil microbiota, however, the mechanism are often complicated. We designed a consecutive cultivation procedure to evaluate the allelopathic effect of harmaline, the major active allelochemical produced by the desert plant Peganum harmala, on soil microorganisms. Harmaline was added to the soil at 20 μg/g, and after five generations of cultivation, the Chao1, Pielou, Shannon and Simpon indexes changed significantly. In particular, the relative abundances of the dominant fungi, Alternaria sp. and Fusarium sp., declined drastically by 84.90 and 91.90%, respectively. Further in vitro bioassays confirmed that harmaline indeed suppressed growth of 6 Alternaria and Fusarium strains isolated from P. harmala rhizosphere soil. We thus suspect that P. harmala might produce harmaline as an effective carry-on pesticide to defend against general pathogens such as Alternaria sp. and Fusarium sp. and favor itself. Our consecutive cultivation procedure has successfully magnified the core signals from the chaotic data, implying that it can be applied to measure the effects of other allelochemicals on soil microbiota.
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Affiliation(s)
- Kai Shi
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Hua Shao
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- Research Center for Ecology and Environment of Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- *Correspondence: Hua Shao,
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15
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Sytiuk A, Céréghino R, Hamard S, Delarue F, Dorrepaal E, Küttim M, Lamentowicz M, Pourrut B, Robroek BJM, Tuittila E, Jassey VEJ. Biochemical traits enhance the trait concept in
Sphagnum
ecology. OIKOS 2022. [DOI: 10.1111/oik.09119] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Anna Sytiuk
- Laboratoire Ecologie Fonctionnelle et Environnement, Univ. Paul Sabatier Toulouse 3, UPS, CNRS Toulouse France
| | - Regis Céréghino
- Laboratoire Ecologie Fonctionnelle et Environnement, Univ. Paul Sabatier Toulouse 3, UPS, CNRS Toulouse France
| | - Samuel Hamard
- Laboratoire Ecologie Fonctionnelle et Environnement, Univ. Paul Sabatier Toulouse 3, UPS, CNRS Toulouse France
| | | | - Ellen Dorrepaal
- Climate Impacts Research Centre, Dept of Ecology and Environmental Science, Umeå Univ. Abisko Sweden
| | - Martin Küttim
- Inst. of Ecology, School of Natural Sciences and Health, Tallinn Univ. Tallinn Estonia
| | - Mariusz Lamentowicz
- Climate Change Ecology Research Unit, Faculty of Geographical and Geological Sciences, Adam Mickiewicz Univ. in Poznań Poznań Poland
| | - Bertrand Pourrut
- Laboratoire Ecologie Fonctionnelle et Environnement, Univ. Paul Sabatier Toulouse 3, UPS, CNRS Toulouse France
| | - Bjorn J. M. Robroek
- Aquatic Ecology&Environmental Biology, Radboud Inst. for Biological and Environmental Sciences, Faculty of Science, Radboud Univ. Nijmegen Nijmegen the Netherlands
| | - Eeva‐Stiina Tuittila
- Biological Sciences, Faculty of Natural and Environmental Sciences, Inst. for Life Sciences, Univ. of Southampton Southampton UK
| | - Vincent E. J. Jassey
- Laboratoire Ecologie Fonctionnelle et Environnement, Univ. Paul Sabatier Toulouse 3, UPS, CNRS Toulouse France
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16
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McCoy RM, Widhalm JR, McNickle GG. Allelopathy as an evolutionary game. PLANT DIRECT 2022; 6:e382. [PMID: 35169675 PMCID: PMC8832168 DOI: 10.1002/pld3.382] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/21/2021] [Accepted: 01/11/2022] [Indexed: 05/30/2023]
Abstract
In plants, most competition is resource competition, where one plant simply preempts the resources away from its neighbors. Interference competition, as the name implies, is a form of direct interference to prevent resource access. Interference competition is common among animals that can physically fight, but in plants, one of the main mechanisms of interference competition is allelopathy. Allelopathic plants release cytotoxic chemicals into the environment which can increase their ability to compete with surrounding organisms for limited resources. The circumstances and conditions favoring the development and maintenance of allelochemicals, however, are not well understood. Particularly, despite the obvious benefits of allelopathy, current data suggest it seems to have only rarely evolved. To gain insight into the cost and benefit of allelopathy, we have developed a 2 × 2 matrix game to model the interaction between plants that produce allelochemicals and plants that do not. Production of an allelochemical introduces novel cost associated with both synthesis and detoxifying a toxic chemical but may also convey a competitive advantage. A plant that does not produce an allelochemical will suffer the cost of encountering one. Our model predicts three cases in which the evolutionarily stable strategies are different. In the first, the nonallelopathic plant is a stronger competitor, and not producing allelochemicals is the evolutionarily stable strategy. In the second, the allelopathic plant is the better competitor, and production of allelochemicals is the more beneficial strategy. In the last case, neither is the evolutionarily stable strategy. Instead, there are alternating stable states, depending on whether the allelopathic or nonallelopathic plant arrived first. The generated model reveals circumstances leading to the evolution of allelochemicals and sheds light on utilizing allelochemicals as part of weed management strategies. In particular, the wide region of alternative stable states in most parameterizations, combined with the fact that the absence of allelopathy is likely the ancestral state, provides an elegant answer to the question of why allelopathy seems to rarely evolve despite its obvious benefits. Allelopathic plants can indeed outcompete nonallelopathic plants, but this benefit is simply not great enough to allow them to go to fixation and spread through the population. Thus, most populations would remain purely nonallelopathic.
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Affiliation(s)
- Rachel M. McCoy
- Purdue Center for Plant BiologyPurdue UniversityWest LafayetteINUSA
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteINUSA
| | - Joshua R. Widhalm
- Purdue Center for Plant BiologyPurdue UniversityWest LafayetteINUSA
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteINUSA
| | - Gordon G. McNickle
- Purdue Center for Plant BiologyPurdue UniversityWest LafayetteINUSA
- Department of Botany and Plant PathologyPurdue UniversityWest LafayetteINUSA
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17
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Carvalho TF, Carvalho AC, Zanuncio JC, de Oliveira MLR, Machado ELM, José AC, Santos JB, Pereira IM. Does invasion by Pteridium aquilinum (Dennstaedtiaceae) affect the ecological succession in Atlantic Forest areas after a fire? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:14195-14205. [PMID: 34601685 DOI: 10.1007/s11356-021-16761-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
Pteridium aquilinum (Dennstaedtiaceae) colonization affects ecological and restoration processes. The knowledge of the impacts on the ecological succession by this species allows the use of restoration strategies in invaded environments. This work aimed to evaluate the floristic composition, diversity, structure, density, basal area, height, and diameter of natural regeneration in three areas of the Atlantic Forest in the Serra do Espinhaço Biosphere Reserve in an area invaded by P. aquilinum after a fire. Three environments with different coverage intensities by P. aquilinum were studied, and the plants over 10 cm in height or 5 cm in canopy diameter were measured. The floristic composition and diversity were analyzed using indices presented by Chao, Fisher, Margalef, Pielou, Shannon-Weaver, and Simpson, and similarity was evaluated by the Jaccard index. Species density, basal area, height, and canopy diameter classes were also evaluated. The floristic composition, diversity, structure of natural regeneration, density, and basal area were higher in post-fire areas with a lower coverage by P. aquilinum. The topsoil coverage with plant litter and the possible effect of P. aquilinum allelopathy probably reduced the species richness and diversity. The proportion of plants from the lowest height and canopy diameter classes was higher under moderate coverage by P. aquilinum. The reduction in the floristic composition, diversity, number of species, and basal area in post-fire areas colonized by P. aquilinum is probably due to this species aggressiveness. The population of this plant is high, accumulating large quantities of plant litter as a physical barrier preventing light and propagules from reaching the soil, reducing the germination of the seed bank and, consequently, the natural regeneration. The floristic composition, diversity, structure of natural regeneration, density, and basal area were lower in areas with higher coverage by P. aquilinum. The proportion of plants in the most significant height and canopy diameter classes was higher with reduced coverage by P. aquilinum. The P. aquilinum reduced forest succession in areas after a fire.
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Affiliation(s)
- Thayane Ferreira Carvalho
- Programa de Pós Graduação em Engenharia Florestal/DCF, Universidade Federal de Lavras, Lavras, Minas Gerais, 37200-000, Brazil
| | - Aline Cristina Carvalho
- Programa de Pós Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Campus JK, Diamantina, Minas Gerais, 39100-000, Brazil
| | - José Cola Zanuncio
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Marcio Leles Romarco de Oliveira
- Programa de Pós Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Campus JK, Diamantina, Minas Gerais, 39100-000, Brazil
| | - Evandro Luiz Mendonça Machado
- Programa de Pós Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Campus JK, Diamantina, Minas Gerais, 39100-000, Brazil
| | - Anderson Cleiton José
- Programa de Pós Graduação em Engenharia Florestal/DCF, Universidade Federal de Lavras, Lavras, Minas Gerais, 37200-000, Brazil
| | - José Barbosa Santos
- Programa de Pós Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Campus JK, Diamantina, Minas Gerais, 39100-000, Brazil.
| | - Israel Marinho Pereira
- Programa de Pós Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Campus JK, Diamantina, Minas Gerais, 39100-000, Brazil
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18
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Dat TTH, Oanh PTT, Cuong LCV, Anh LT, Minh LTH, Ha H, Lam LT, Cuong PV, Anh HLT. Pharmacological Properties, Volatile Organic Compounds, and Genome Sequences of Bacterial Endophytes from the Mangrove Plant Rhizophora apiculata Blume. Antibiotics (Basel) 2021; 10:antibiotics10121491. [PMID: 34943703 PMCID: PMC8698355 DOI: 10.3390/antibiotics10121491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 11/28/2021] [Accepted: 12/03/2021] [Indexed: 11/23/2022] Open
Abstract
Mangrove plant endophytic bacteria are prolific sources of bioactive secondary metabolites. In the present study, twenty-three endophytic bacteria were isolated from the fresh roots of the mangrove plant Rhizophora apiculata. The identification of isolates by 16S rRNA gene sequences revealed that the isolated endophytic bacteria belonged to nine genera, including Streptomyces, Bacillus, Pseudovibrio, Microbacterium, Brevibacterium, Microbulbifer, Micrococcus, Rossellomorea, and Paracoccus. The ethyl acetate extracts of the endophytic bacteria’s pharmacological properties were evaluated in vitro, including antimicrobial, antioxidant, α-amylase and α-glucosidase inhibitory, xanthine oxidase inhibitory, and cytotoxic activities. Gas chromatography–mass spectrometry (GC-MS) analyses of three high bioactive strains Bacillus sp. RAR_GA_16, Rossellomorea vietnamensis RAR_WA_32, and Bacillus sp. RAR_M1_44 identified major volatile organic compounds (VOCs) in their ethyl acetate extracts. Genome analyses identified biosynthesis gene clusters (BGCs) of secondary metabolites of the bacterial endophytes. The obtained results reveal that the endophytic bacteria from R. apiculata may be a potential source of pharmacological secondary metabolites, and further investigations of the high bioactive strains—such as fermentation and isolation of pure bioactive compounds, and heterologous expression of novel BGCs in appropriate expression hosts—may allow exploring and exploiting the promising bioactive compounds for future drug development.
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Affiliation(s)
- Ton That Huu Dat
- Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City 49117, Vietnam; (P.T.T.O.); (L.C.V.C.); (L.T.A.)
- Correspondence: (T.T.H.D.); (P.V.C.); (H.L.T.A.); Tel.: +84-949-492-778 (T.T.H.D.); +84-913-219-187 (P.V.C.); +84-948-151-838 (H.L.T.A.)
| | - Phung Thi Thuy Oanh
- Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City 49117, Vietnam; (P.T.T.O.); (L.C.V.C.); (L.T.A.)
| | - Le Canh Viet Cuong
- Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City 49117, Vietnam; (P.T.T.O.); (L.C.V.C.); (L.T.A.)
| | - Le Tuan Anh
- Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City 49117, Vietnam; (P.T.T.O.); (L.C.V.C.); (L.T.A.)
| | - Le Thi Hong Minh
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam;
| | - Hoang Ha
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam; (H.H.); (L.T.L.)
| | - Le Tung Lam
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam; (H.H.); (L.T.L.)
| | - Pham Viet Cuong
- Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang, Hue City 49117, Vietnam; (P.T.T.O.); (L.C.V.C.); (L.T.A.)
- Correspondence: (T.T.H.D.); (P.V.C.); (H.L.T.A.); Tel.: +84-949-492-778 (T.T.H.D.); +84-913-219-187 (P.V.C.); +84-948-151-838 (H.L.T.A.)
| | - Hoang Le Tuan Anh
- Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
- Correspondence: (T.T.H.D.); (P.V.C.); (H.L.T.A.); Tel.: +84-949-492-778 (T.T.H.D.); +84-913-219-187 (P.V.C.); +84-948-151-838 (H.L.T.A.)
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19
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Cowan JA, Gehring CA, Ilstedt U, Grady KC. Host identity and neighborhood trees affect belowground microbial communities in a tropical rainforest. Trop Ecol 2021. [DOI: 10.1007/s42965-021-00203-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Veselkin DV, Dubrovin DI, Pustovalova LA. High canopy cover of invasive Acer negundo L. affects ground vegetation taxonomic richness. Sci Rep 2021; 11:20758. [PMID: 34675277 PMCID: PMC8531358 DOI: 10.1038/s41598-021-00258-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 10/06/2021] [Indexed: 11/11/2022] Open
Abstract
We assessed the link between canopy cover degree and ground vegetation taxonomic richness under alien ash-leaved maple (Acer negundo) and other (native or alien) tree species. We investigated urban and suburban forests in the large city of Yekaterinburg, Russia. Forests were evaluated on two spatial scales. Through an inter-habitat comparison we recorded canopy cover and plant taxonomic richness among 13 sample plots of 20 × 20 m where A. negundo dominated and 13 plots where other tree species dominated. In an intra-habitat comparison, we recorded canopy cover and ground vegetation taxonomic richness among 800 sample plots measuring 1 m2 in the extended urbanised forest, which featured abundant alien (308 plots) and native trees (492 plots). We observed decreased taxonomic richness among vascular ground plant species by 40% (inter-habitat) and 20% (intra-habitat) in areas dominated by A. negundo compared to areas dominated by native tree and shrub species. An abundance of A. negundo was accompanied by increased canopy cover. We found a negative relationship between canopy cover and the number of understory herbaceous species. Thus, the interception of light and the restriction of its amount for other species is a main factor supporting the negative influence of A. negundo on native plant communities.
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Affiliation(s)
- D V Veselkin
- Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
| | - D I Dubrovin
- Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia.
| | - L A Pustovalova
- Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
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21
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Li H, La S, Zhang X, Gao L, Tian Y. Salt-induced recruitment of specific root-associated bacterial consortium capable of enhancing plant adaptability to salt stress. THE ISME JOURNAL 2021; 15:2865-2882. [PMID: 33875820 PMCID: PMC8443564 DOI: 10.1038/s41396-021-00974-2] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 03/12/2021] [Accepted: 04/06/2021] [Indexed: 02/01/2023]
Abstract
Salinity is a major abiotic stress threatening crop production. Root-derived bacteria (RDB) are hypothesized to play a role in enhancing plant adaptability to various stresses. However, it is still unclear whether and how plants build up specific RDB when challenged by salinity. In this study, we measured the composition and variation in the rhizosphere and endophyte bacteria of salt-sensitive (SSs) and salt-resistant (SRs) plants under soil conditions with/without salinity. The salt-induced RDB (both rhizobiomes and endophytes) were isolated to examine their effects on the physiological responses of SSs and SRs to salinity challenge. Moreover, we examined whether functional redundancy exists among salt-induced RDB in enhancing plant adaptability to salt stress. We observed that although SSs and SRs recruited distinct RDB and relevant functions when challenged by salinity, salt-induced recruitment of specific RDB led to a consistent growth promotion in plants regardless of their salinity tolerance capacities. Plants employed a species-specific strategy to recruit beneficial soil bacteria in the rhizosphere rather than in the endosphere. Furthermore, we demonstrated that the consortium, but not individual members of the salt-induced RDB, provided enduring resistance against salt stress. This study confirms the critical role of salt-induced RDB in enhancing plant adaptability to salt stress.
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Affiliation(s)
- Hong Li
- grid.22935.3f0000 0004 0530 8290Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, P. R. China
| | - Shikai La
- grid.22935.3f0000 0004 0530 8290Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, P. R. China
| | - Xu Zhang
- grid.22935.3f0000 0004 0530 8290Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, P. R. China
| | - Lihong Gao
- grid.22935.3f0000 0004 0530 8290Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, P. R. China
| | - Yongqiang Tian
- grid.22935.3f0000 0004 0530 8290Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, P. R. China
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22
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Hierro JL, Callaway RM. The Ecological Importance of Allelopathy. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2021. [DOI: 10.1146/annurev-ecolsys-051120-030619] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Allelopathy (i.e., chemical interaction among species) was originally conceived as inclusive of positive and negative effects of plants on other plants, and we adopt this view. Most studies of allelopathy have been phenomenological, but we focus on studies that have explored the ecological significance of this interaction. The literature suggests that studies of allelopathy have been particularly important for three foci in ecology: species distribution, conditionality of interactions, and maintenance of species diversity. There is evidence that allelopathy influences local distributions of plant species around the world. Allelopathic conditionality appears to arise through coevolution, and this is a mechanism for plant invasions. Finally, allelopathy promotes species coexistence via intransitive competition, modifications of direct interactions, and (co)evolution. Recent advances additionally suggest that coexistence might be favored through biochemical recognition. The preponderance of phenomenological studies notwithstanding, allelopathy has broad ecological consequences. Expected final online publication date for the Annual Review of Ecology, Evolution, and Systematics, Volume 52 is November 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- José L. Hierro
- Laboratorio de Ecología, Biogeografía y Evolución Vegetal (LEByEV), Instituto de Ciencias de la Tierra y Ambientales de La Pampa (INCITAP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)–Universidad Nacional de La Pampa (UNLPam), 6300 Santa Rosa, La Pampa, Argentina
- Departamento de Biología, Facultad de Ciencias Exactas y Naturales, UNLPam, 6300 Santa Rosa, La Pampa, Argentina
| | - Ragan M. Callaway
- Division of Biological Sciences and the Institute on Ecosystems, University of Montana, Missoula, Montana 59812, USA
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23
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Plaszkó T, Szűcs Z, Vasas G, Gonda S. Effects of Glucosinolate-Derived Isothiocyanates on Fungi: A Comprehensive Review on Direct Effects, Mechanisms, Structure-Activity Relationship Data and Possible Agricultural Applications. J Fungi (Basel) 2021; 7:539. [PMID: 34356918 PMCID: PMC8305656 DOI: 10.3390/jof7070539] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/24/2021] [Accepted: 07/03/2021] [Indexed: 12/29/2022] Open
Abstract
Plants heavily rely on chemical defense systems against a variety of stressors. The glucosinolates in the Brassicaceae and some allies are the core molecules of one of the most researched such pathways. These natural products are enzymatically converted into isothiocyanates (ITCs) and occasionally other defensive volatile organic constituents (VOCs) upon fungal challenge or tissue disruption to protect the host against the stressor. The current review provides a comprehensive insight on the effects of the isothiocyanates on fungi, including, but not limited to mycorrhizal fungi and pathogens of Brassicaceae. In the review, our current knowledge on the following topics are summarized: direct antifungal activity and the proposed mechanisms of antifungal action, QSAR (quantitative structure-activity relationships), synergistic activity of ITCs with other agents, effects of ITCs on soil microbial composition and allelopathic activity. A detailed insight into the possible applications is also provided: the literature of biofumigation studies, inhibition of post-harvest pathogenesis and protection of various products including grains and fruits is also reviewed herein.
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Affiliation(s)
- Tamás Plaszkó
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, 4032 Debrecen, Hungary
| | - Zsolt Szűcs
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
- Healthcare Industry Institute, University of Debrecen, 4032 Debrecen, Hungary
| | - Gábor Vasas
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
| | - Sándor Gonda
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
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24
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Bonanomi G, Zotti M, Idbella M, Mazzoleni S, Abd-ElGawad AM. Microbiota modulation of allelopathy depends on litter chemistry: Mitigation or exacerbation? THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 776:145942. [PMID: 33640554 DOI: 10.1016/j.scitotenv.2021.145942] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/07/2020] [Accepted: 02/14/2021] [Indexed: 06/12/2023]
Abstract
Having a pivotal role in biogeochemical cycles, litter decomposition affects plant growth and regeneration by inducing the release of allelochemicals. The aim of this study was to assess the role of the microbiota in modulating the allelopathic effects of freshly fallen and decomposed leaf litter. To disentangle the chemical and microbial effects, bioassays were carried out on four target plants in sterile and non-sterile conditions. All litter types were characterized by carbon-13 cross polarization magic-angle spinning nuclear magnetic resonance (13C-CPMAS NMR) spectroscopy, and the associated fungal and bacterial microbiota were described by next-generation sequencing. When the litter extract was sterilized, freshly fallen litter severely inhibited the plant root growth, but during decomposition, the allelopathic effect rapidly decreased. Root growth was negatively correlated with extractable carbon and positively correlated with parameters associated with tissue lignification. In non-sterile conditions, the living microbiota modulated the leaf litter allelopathic effects of mitigation (26.5% of cases) and exacerbation (26.6% of cases). The mitigation effect was more frequent and intense in stressful conditions, i.e., highly phytotoxic freshly fallen litter, than in benign environments, i.e., decomposed litter. Finally, we identified specific bacterial and fungal operational taxonomic units (OTUs) that could be involved in the mediation of the litter allelopathic effect. This study highlights the importance of studying allelopathy in both sterile conditions and in the presence of a living microbiota to assess the role of litter chemistry and the potential impact of plant detritus on the agro-ecosystem and natural plant communities.
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Affiliation(s)
- Giuliano Bonanomi
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055 Portici, NA, Italy; Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy
| | - Maurizio Zotti
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055 Portici, NA, Italy
| | - Mohamed Idbella
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055 Portici, NA, Italy; Biosciences laboratory, Faculty of Sciences and Techniques, Hassan II university of Casablanca, Morocco
| | - Stefano Mazzoleni
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055 Portici, NA, Italy; Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy
| | - Ahmed M Abd-ElGawad
- Plant Production Department, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; Department of Botany, Faculty of Sciences, Mansoura University, Mansoura 35516, Egypt.
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25
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Yang X, Cheng J, Yao B, Lu H, Zhang Y, Xu J, Song X, Sowndhararajan K, Qiang S. Polyploidy‐promoted phenolic metabolism confers the increased competitive ability of
Solidago canadensis. OIKOS 2021. [DOI: 10.1111/oik.08280] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Xianghong Yang
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
| | - Jiliang Cheng
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
| | - Beibei Yao
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
| | - Huan Lu
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
| | - Yu Zhang
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
| | - Jingxuan Xu
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
| | - Xiaoling Song
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
| | | | - Sheng Qiang
- Weed Research Laboratory, College of Life Sciences, Nanjing Agricultural Univ. Nanjing China
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26
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González FG, Manavella PA. Prospects for plant productivity: from the canopy to the nucleus. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:3931-3935. [PMID: 34003934 DOI: 10.1093/jxb/erab147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Population growth has been closely associated with agricultural production, since the first famine predicted by Malthus (1798) up to the Green Revolution of the past century. Today, we continue to face increasing demand for food and crop production (Tilman et al., 2011). Considering the combined caloric or protein content of the 275 major crops used directly as human foods or as livestock and fish feeds, Tilman et al. (2011) forecast a 100% increase in global demand for crops from 2005 to 2050. Meeting this demand with the lowest impact on the environment could be achieved by sustainable intensification of existing cropland with reduced land clearing (Tilman et al., 2011; Fischer and Connor, 2018).
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Affiliation(s)
- Fernanda G González
- Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires (CITNOBA, CONICET- UNNOBA-UNSADA), 2700 Pergamino, Buenos Aires, Argentina
- Instituto Nacional de Tecnología Agropecuaria (INTA), EEA 2700 Pergamino, Buenos Aires, Argentina
| | - Pablo A Manavella
- Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000 Santa Fe, Argentina
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27
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Shift of Dominant Species in Plant Community and Soil Chemical Properties Shape Soil Bacterial Community Characteristics and Putative Functions: A Case Study on Topographic Variation in a Mountain Pasture. Microorganisms 2021; 9:microorganisms9050961. [PMID: 33947019 PMCID: PMC8146586 DOI: 10.3390/microorganisms9050961] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 11/29/2022] Open
Abstract
Reducing management intensity according to the topography of pastures can change the dominant plant species from sown forages to weeds. It is unclear how changes in species dominance in plant community drive spatial variation in soil bacterial community characteristics and functions in association with edaphic condition. Analysing separately the effects of both plant communities and soil chemical properties on bacterial community is crucial for understanding the biogeographic process at a small scale. In this paper, we investigated soil bacterial responses in five plant communities (two forage and three weed), where >65% of the coverage was by one or two species. The structure and composition of the bacterial communities in the different microbiome were analysed using sequencing and their characteristics were assessed using the Functional Annotation of Prokaryotic Taxa (FAPROTAX) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Firmicutes and Planctomycetes responded only to one specific plant community, and each plant community harboured unique operational taxonomic units (OTUs) at the species level. There were a large percentage of uniquely absent OTUs for specific plant communities, suggesting that a negative effect is critical in the relationship between plants and bacteria. Bacterial diversity indices were influenced more by soil chemical properties than by plant communities. Some putative functions related to C and N recycling including nitrogen fixation were correlated with pH, electrical conductivity (EC) and nutrient levels, and this also implied that some biological functions, such as ureolysis and carbon metabolism, may decline when fertilisation intensity is reduced. Taken together, these results suggest that a shift of dominant species in plant community exerts individual effects on the bacterial community composition, which is different from the effect of soil chemical properties.
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Yamazaki S, Mardani-Korrani H, Kaida R, Ochiai K, Kobayashi M, Nagano AJ, Fujii Y, Sugiyama A, Aoki Y. Field multi-omics analysis reveals a close association between bacterial communities and mineral properties in the soybean rhizosphere. Sci Rep 2021; 11:8878. [PMID: 33893339 PMCID: PMC8065045 DOI: 10.1038/s41598-021-87384-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 03/26/2021] [Indexed: 02/07/2023] Open
Abstract
The plant root-associated environments such as the rhizosphere, rhizoplane, and endosphere are different from the outer soil region (bulk soil). They establish characteristic conditions including microbiota, metabolites, and minerals, and they can directly affect plant growth and development. However, comprehensive insights into those characteristic environments, especially the rhizosphere, and molecular mechanisms of their formation are not well understood. In the present study, we investigated the spatiotemporal dynamics of the root-associated environment in actual field conditions by multi-omics analyses (mineral, microbiome, and transcriptome) of soybean plants. Mineral and microbiome analyses demonstrated a characteristic rhizosphere environment in which most of the minerals were highly accumulated and bacterial communities were distinct from those in the bulk soil. Mantel's test and co-abundance network analysis revealed that characteristic community structures and dominant bacterial taxa in the rhizosphere significantly interact with mineral contents in the rhizosphere, but not in the bulk soil. Our field multi-omics analysis suggests a rhizosphere-specific close association between the microbiota and mineral environment.
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Affiliation(s)
- Shinichi Yamazaki
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Hossein Mardani-Korrani
- Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Rumi Kaida
- Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Kumiko Ochiai
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Masaru Kobayashi
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | | | - Yoshiharu Fujii
- Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Akifumi Sugiyama
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Japan
| | - Yuichi Aoki
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.
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29
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Sharifi R, Ryu C. Social networking in crop plants: Wired and wireless cross-plant communications. PLANT, CELL & ENVIRONMENT 2021; 44:1095-1110. [PMID: 33274469 PMCID: PMC8049059 DOI: 10.1111/pce.13966] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 11/18/2020] [Accepted: 11/22/2020] [Indexed: 05/03/2023]
Abstract
The plant-associated microbial community (microbiome) has an important role in plant-plant communications. Plants decipher their complex habitat situations by sensing the environmental stimuli and molecular patterns and associated with microbes, herbivores and dangers. Perception of these cues generates inter/intracellular signals that induce modifications of plant metabolism and physiology. Signals can also be transferred between plants via different mechanisms, which we classify as wired- and wireless communications. Wired communications involve direct signal transfers between plants mediated by mycorrhizal hyphae and parasitic plant stems. Wireless communications involve plant volatile emissions and root exudates elicited by microbes/insects, which enable inter-plant signalling without physical contact. These producer-plant signals induce microbiome adaptation in receiver plants via facilitative or competitive mechanisms. Receiver plants eavesdrop to anticipate responses to improve fitness against stresses. An emerging body of information in plant-plant communication can be leveraged to improve integrated crop management under field conditions.
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Affiliation(s)
- Rouhallah Sharifi
- Department of Plant ProtectionCollege of Agriculture and Natural Resources, Razi UniversityKermanshahIran
| | - Choong‐Min Ryu
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
- Biosystem and Bioengineering ProgramUniversity of Science and Technology (UST)DaejeonSouth Korea
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30
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Ihara H, Kumagai A, Hori T, Nanba K, Aoyagi T, Takasaki M, Katayama Y. Direct comparison of bacterial communities in soils contaminated with different levels of radioactive cesium from the first Fukushima nuclear power plant accident. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:143844. [PMID: 33279203 DOI: 10.1016/j.scitotenv.2020.143844] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 11/03/2020] [Accepted: 11/07/2020] [Indexed: 06/12/2023]
Abstract
The Great East Japan Earthquake caused a serious accident at the first Fukushima nuclear power plant (NPP), which in turn released a large amount of radionuclides. Little attention has been paid to in-situ soil microorganisms exposed to radioactive contamination by the actual NPP accident. We herein investigated bacterial communities in the radioactive cesium (Cs)-contaminated and non-contaminated soils by high-throughput sequencing. The uppermost and ectorhizosphere soil samples were collected from the base of mugwort grown in the same soil type with the same soil-use history in order to compare the bacterial communities at geographically separated areas. The concentrations of radioactive Cs in the soils ranged from 10 to 563,000 Bq 137Cs/kg dry soil, with the highest concentration being detected at 1 km from the NPP. Alpha-diversity indices, i.e., Chao1, Shannon and Simpson reciprocal, of the sequence data showed the lower bacterial diversity in the most highly Cs-contaminated soil. Principal coordinate analysis with principle components 1 and 3 based on unweighted UniFrac distances indicated the significant difference in bacterial communities of the most contaminated area from those of the other areas. Operational taxonomic unit-based assay revealed higher abundance of the radio-resistant Geodermatophilus bullaregiensis relative in the most contaminated soil. Thus, it was strongly suggested that the radioactive accident facilitated the growth and/or survival of radio-resistant bacteria in the Cs-contaminated soils. The results of this study show that information on the soil type, vegetation and soil-use history enhances the direct comparison of geographically distant soil bacterial communities exposed to different levels of radioactive contamination.
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Affiliation(s)
- Hideyuki Ihara
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Ayako Kumagai
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Tomoyuki Hori
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan.
| | - Kenji Nanba
- Fukushima University, 1 Kanayagawa, Fukushima 960-1296, Japan
| | - Tomo Aoyagi
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Mitsuru Takasaki
- Department of Food and Environmental Sciences, Faculty of Science and Engineering, Ishinomaki Senshu University, 1 Shinmito, Minamisakai, Ishinomaki, Miyagi 986-8580, Japan
| | - Yoko Katayama
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan; Center for Conservation Science, Tokyo National Research Institute for Cultural Properties, 13-43 Ueno Park, Taito-ku, Tokyo 110-8713, Japan.
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31
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Valadares RV, Costa MD, Neves JCL, Vieira Netto JAF, Silva IRD, Moro E, Alves MR, Fernandes LA. Rhizosphere microbiological processes and eucalypt nutrition: Synthesis and conceptualization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:141305. [PMID: 32771762 DOI: 10.1016/j.scitotenv.2020.141305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/15/2020] [Accepted: 07/26/2020] [Indexed: 06/11/2023]
Abstract
In this review, we present the state of art regarding rhizosphere effects on eucalypt plantations. It provides a greater understanding of carbon (C) and nitrogen (N) turnover in forest soils. P organic hydrolysis, soil mineral solubilization, indoleacetic acid, gibberellin, resistance factors, and production of siderophores by rhizosphere microbial populations help to explain the tolerance of Eucalyptus plants to biotic and abiotic stresses and the apparent steady-state condition of C and N soil stocks in many planted forests. This work aims to present the main findings on Eucalyptus rhizosphere processes and highlights their importance for trees nutrition, especially for N mineralization triggered by microbial activation or microbial community structure changes regarding the so-called rhizosphere priming effect and N fixation. Furthermore, we present an explanatory conceptual model of the steady-state condition for soil organic matter (SOM) stocks and its relation with fertilization based on a nutrient balance model. This review also considers the main experimental and modeling studies that demonstrate the quantitative importance of rhizosphere processes to Eucalyptus genus and their shortcomings. This provides a framework for process modeling under scenarios of global climate change. A better understanding of rhizosphere microbiological processes may allow improvements in Eucalyptus nutrition and production, as well as in accurate long-term estimates of SOM stocks and C-CO2 exchanges between forest soils and the atmosphere.
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Affiliation(s)
- Rafael V Valadares
- Universidade Federal de Viçosa, Departamento de Solos, Viçosa, Minas Gerais CEP: 36570-900, Brazil.
| | - Maurício D Costa
- Universidade Federal de Viçosa, Departamento de Microbiologia, Viçosa, Minas Gerais CEP: 36570-900, Brazil; Bolsista Pesquisador do Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq, Brasília, DF, Brazil
| | - Júlio César L Neves
- Universidade Federal de Viçosa, Departamento de Solos, Viçosa, Minas Gerais CEP: 36570-900, Brazil
| | - João A F Vieira Netto
- Universidade Federal de Viçosa, Departamento de Microbiologia, Viçosa, Minas Gerais CEP: 36570-900, Brazil
| | - Ivo Ribeiro da Silva
- Universidade Federal de Viçosa, Departamento de Solos, Viçosa, Minas Gerais CEP: 36570-900, Brazil
| | - Edemar Moro
- Universidade do Oeste Paulista, Presidente Prudente, São Paulo CEP: 19050-920, Brazil
| | - Marcelo Rodrigo Alves
- Universidade do Oeste Paulista, Presidente Prudente, São Paulo CEP: 19050-920, Brazil
| | - Luiz Arnaldo Fernandes
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Montes Claros CEP: 39404-547, Brazil; Bolsista Pesquisador do Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq, Brasília, DF, Brazil
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32
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de las Heras P, Medina-Villar S, Pérez-Corona M, Vázquez-de-Aldana BR. Leaf litter age regulates the effect of native and exotic tree species on understory herbaceous vegetation of riparian forests. Basic Appl Ecol 2020. [DOI: 10.1016/j.baae.2020.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Structure of microbial soil communities in areas of restinga: a case study in a conservation unit in the Atlantic Forest of the Southern Brazilian coast. Trop Ecol 2020. [DOI: 10.1007/s42965-020-00103-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Zhang B, Weston LA, Li M, Zhu X, Weston PA, Feng F, Zhang B, Zhang L, Gu L, Zhang Z. Rehmannia glutinosa Replant Issues: Root Exudate-Rhizobiome Interactions Clearly Influence Replant Success. Front Microbiol 2020; 11:1413. [PMID: 32714307 PMCID: PMC7344158 DOI: 10.3389/fmicb.2020.01413] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 06/01/2020] [Indexed: 11/13/2022] Open
Abstract
Production of medicinal tubers of Rehmannia glutinosa is severely hindered by replanting issues. However, a mechanistic understanding of the plant-soil factors associated with replant problems is currently limited. Thus, we aimed to identify the R. glutinosa root exudates, evaluate their potential phytotoxicity and profile the interactions between the plant and its associated rhizobiome. Stereomicroscopy and liquid chromatography coupled to a quadrupole/time of flight mass spectrometer were used to monitor and identify secreted metabolites, respectively. Seedling bioassays were used to evaluate the phytotoxicity of R. glutinosa root exudates. Two complimentary experiments were performed to investigate allelochemical fate in rhizosphere soil and profile the associated microbiota. Root specific microbes were further isolated from R. glutinosa rhizosphere. Impacts of isolated strains were evaluated by co-cultivation on plate and on seedlings in tissue culture, with a focus on their pathogenicity. Interactions between key R. glutinosa root exudates and isolated rhizobiomes were investigated to understand the potential for plant-soil feedbacks. Quantification and phytotoxic analysis of metabolites released from R. glutinosa indicated catalpol was the most abundant and bioactive metabolite in root exudates. Subsequent microbial profiling in soil containing accumulated and ecologically significant levels of catalpol identified several taxa (e.g., Agromyces, Lysobacter, Pseudomonas, Fusarium) that were specifically shifted. Isolation of R. glutinosa rhizobiomes obtained several root specific strains. A significant antagonistic effect between strain Rh7 (Pseudomonas aeruginosa) and two pathogenic strains Rf1 (Fusarium oxysporum) and Rf2 (Fusarium solani) was observed. Notably, the growth of strain Rh7 and catalpol concentration showed a hormesis-like effect. Field investigation further indicated catalpol was increasingly accumulated in the rhizosphere of replanted R. glutinosa, suggesting that interactions of biocontrol agents and pathogens are likely regulated by the presence of bioactive root exudates and in turn impact the rhizo-ecological process. In summary, this research successfully monitored the release of R. glutinosa root exudates, identified several abundant bioactive R. glutinosa secreted metabolites, profiled associated root specific microbes, and investigated the plant-soil feedbacks potentially regulated by catalpol and associated rhizobiomes. Our findings provide new perspectives toward an enhanced understanding R. glutinosa replant problems.
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Affiliation(s)
- Bao Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Leslie A Weston
- Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Mingjie Li
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiaocheng Zhu
- Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Paul A Weston
- Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Fajie Feng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | | | - Liuji Zhang
- Henan Province Chinese Medicine Research Institute, Zhengzhou, China
| | - Li Gu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zhongyi Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
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Arafat Y, Ud Din I, Tayyab M, Jiang Y, Chen T, Cai Z, Zhao H, Lin X, Lin W, Lin S. Soil Sickness in Aged Tea Plantation Is Associated With a Shift in Microbial Communities as a Result of Plant Polyphenol Accumulation in the Tea Gardens. FRONTIERS IN PLANT SCIENCE 2020; 11:601. [PMID: 32547573 PMCID: PMC7270330 DOI: 10.3389/fpls.2020.00601] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 04/20/2020] [Indexed: 06/01/2023]
Abstract
In conventional tea plantations, a large amount of pruned material returns to the soil surface, putting a high quantity of polyphenols into the soil. The accumulation of active allelochemicals in the tea rhizosphere and subsequent shift in beneficial microbes may be the cause of acidification, soil sickness, and regeneration problem, which may be attributed to hindrance of plant growth, development, and low yield in long-term monoculture tea plantation. However, the role of pruning leaf litter in soil sickness under consecutive tea monoculture is unclear. Here, we investigated soil samples taken from conventional tea gardens of different ages (2, 15, and 30 years) and under the effect of regular pruning. Different approaches including liquid chromatography-mass spectrometry (LC-MS) analysis of the leaf litter, metagenomic study of root-associated bacterial communities, and in vitro interaction of polyphenols with selected bacteria were applied to understand the effect of leaf litter-derived polyphenols on the composition and structure of the tea rhizosphere microbial community. Our results indicated that each pruning practice returns a large amount of leaf litter to each tea garden. LC-MS results showed that leaf litter leads to the accumulation of various allelochemicals in the tea rhizosphere, including epigallocatechin gallate, epigallocatechin, epicatechin gallate, catechin, and epicatechin with increasing age of the tea plantation. Meanwhile, in the tea garden grown consecutively for 30 years (30-Y), the phenol oxidase and peroxidase activities increased significantly. Pyrosequencing identified Burkholderia and Pseudomonas as the dominant genera, while plant growth-promoting bacteria, especially Bacillus, Prevotella, and Sphingomonas, were significantly reduced in the long-term tea plantation. The qPCR results of 30-Y soil confirmed that the copy numbers of bacterial genes per gram of the rhizosphere soil were significantly reduced, while that of Pseudomonas increased significantly. In vitro study showed that the growth of catechin-degrading bacteria (e.g., Pseudomonas) increased and plant-promoting bacteria (e.g., Bacillus) decreased significantly with increasing concentration of these allelochemicals. Furthermore, in vitro interaction showed a 0.36-fold decrease in the pH of the broth after 72 h with the catechin degradation. In summary, the increase of Pseudomonas and Burkholderia in the 30-Y garden was found to be associated with the accumulation of catechin substrates. In response to the long-term monoculture of tea, the variable soil pH along with the litter distribution negatively affect the population of plant growth-promoting bacteria (e.g., Sphingomonas, Bacillus, and Prevotella). Current research suggests that the removal of pruned branches from tea gardens can prevent soil sickness and may lead to sustainable tea production.
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Affiliation(s)
- Yasir Arafat
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Israr Ud Din
- Institute of Biotechnology and Genetic Engineering, The University of Agriculture Peshawar, Peshawar, Pakistan
| | - Muhammad Tayyab
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuhang Jiang
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Ting Chen
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zhaoying Cai
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Hanyu Zhao
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiangmin Lin
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Wenxiong Lin
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Sheng Lin
- Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
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Medina-Villar S, Uscola M, Pérez-Corona ME, Jacobs DF. Environmental stress under climate change reduces plant performance, yet increases allelopathic potential of an invasive shrub. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02286-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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37
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Comparison of decay rates between native and non-native wood species in invaded forests of the southeastern U.S.: a rapid assessment. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02276-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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38
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Tedersoo L, Bahram M, Zobel M. How mycorrhizal associations drive plant population and community biology. Science 2020; 367:367/6480/eaba1223. [PMID: 32079744 DOI: 10.1126/science.aba1223] [Citation(s) in RCA: 272] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Mycorrhizal fungi provide plants with a range of benefits, including mineral nutrients and protection from stress and pathogens. Here we synthesize current information about how the presence and type of mycorrhizal association affect plant communities. We argue that mycorrhizal fungi regulate seedling establishment and species coexistence through stabilizing and equalizing mechanisms such as soil nutrient partitioning, feedback to soil antagonists, differential mycorrhizal benefits, and nutrient trade. Mycorrhizal fungi have strong effects on plant population and community biology, with mycorrhizal type-specific effects on seed dispersal, seedling establishment, and soil niche differentiation, as well as interspecific and intraspecific competition and hence plant diversity.
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Affiliation(s)
- Leho Tedersoo
- Natural History Museum of Estonia, Tallinn, Estonia.
| | - Mohammad Bahram
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Martin Zobel
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
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39
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Xiao Z, Zou T, Lu S, Xu Z. Soil microorganisms interacting with residue-derived allelochemicals effects on seed germination. Saudi J Biol Sci 2020; 27:1057-1065. [PMID: 32256166 PMCID: PMC7105660 DOI: 10.1016/j.sjbs.2020.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 11/21/2022] Open
Abstract
Despite the knowledge regarding allelopathy, known as a major ecological mechanism for biological weed control, had increased greatly, the role of soil microorganisms in that field remained controversial. The study sought to evaluate the interference potential of soil microorganisms, residues-derived allelochemicals and their interaction on seed germination and understand the variation of microbial community in allelopathic activities. Three different rice residues-derived fractions from variety PI312777 (extracts, straw fraction and fresh residue) were applied to sterile and live soils to disentangle the interference potential of soil microorganisms, residues-derived allelochemicals and their interaction concerned allelopathic activities. The results demonstrated that microbe-only and residues-only exerted onefold promotion and inhibition effects on lettuce (Lactuca sativa Linn.) seed germination, respectively, whereas, microbe-by-residues interaction showed an inhibition at the beginning, and a feeble promotion later. The 20 most dominant genera of microbes were classified into three clusters, with 13 genera in one cluster, only 1 in the second cluster and 6 in the third one. The genera in the first cluster commonly exerted negative effects on phenol content, while showed positive correlation with seed germination. Interestingly, Bacillus, clustered in the second cluster, had an opposite effect alone. The third cluster genera somehow had a weak correlation with both germination as well as the release of the allelochemicals. Overall, we incorporated molecular methodology for tracking bacterial impacts during incubation with allelochemicals, and demonstrated the mutable role of soil microbes in allelopathy. It may be potentially important for stimulating the beneficial roles of microbes for environmentally friendly weed management.
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Affiliation(s)
- Zhongxiang Xiao
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Tao Zou
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Shenggao Lu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhenghao Xu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
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40
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Schandry N, Becker C. Allelopathic Plants: Models for Studying Plant-Interkingdom Interactions. TRENDS IN PLANT SCIENCE 2020; 25:176-185. [PMID: 31837955 DOI: 10.1016/j.tplants.2019.11.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/29/2019] [Accepted: 11/18/2019] [Indexed: 05/24/2023]
Abstract
Allelopathy is a biochemical interaction between plants in which a donor plant releases secondary metabolites, allelochemicals, that are detrimental to the growth of its neighbours. Traditionally considered as bilateral interactions between two plants, allelopathy has recently emerged as a cross-kingdom process that can influence and be modulated by the other organisms in the plant's environment. Here, we review the current knowledge on plant-interkingdom interactions, with a particular focus on benzoxazinoids. We highlight how allelochemical-producing plants influence not only their plant neighbours but also insects, fungi, and bacteria that live on or around them. We discuss challenges that need to be overcome to study chemical plant-interkingdom interactions, and we propose experimental approaches to address how biotic and chemical processes impact plant health.
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Affiliation(s)
- Niklas Schandry
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna BioCenter (VBC), Dr. Bohr-Gasse 3, 1030 Vienna, Austria.
| | - Claude Becker
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna BioCenter (VBC), Dr. Bohr-Gasse 3, 1030 Vienna, Austria; Institute of Genetics, Faculty of Biology, Biocenter Martinsried, LMU Munich, 82152 Martinsried-Planegg, Germany.
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41
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Polyak YM, Sukcharevich VI. Allelopathic Interactions between Plants and Microorganisms in Soil Ecosystems. ACTA ACUST UNITED AC 2020. [DOI: 10.1134/s2079086419060033] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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The Trichoderma viride F-00612 consortium tolerates 2-amino-3H-phenoxazin-3-one and degrades nitrated benzo[d]oxazol-2(3H)-one. CHEMOECOLOGY 2020. [DOI: 10.1007/s00049-020-00300-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractNumerous allelopathic plant secondary metabolites impact plant–microorganism interactions by injuring plant-associated beneficial bacteria and fungi. Fungi belonging to the genus Trichoderma positively influence crops, including benzoxazinone-containing maize. However, benzoxazinones and their downstream metabolites such as benzoxazolinone and phenoxazinones are often fungitoxic. Specimen Trichoderma viride F-00612 was found to be insensitive to 100-µM phenoxazinone and 500-µM benzoxazolinone. Screening of 46 additional specimens of ascomycetes revealed insensitivity to phenoxazinones among fungi that cause disease in benzoxazinone-producing cereal crops, whereas many other ascomycetes were highly sensitive. In contrast, most of the screened fungi were insensitive to benzoxazolinone. T. viride F-00612 was associated with bacteria and, thus, existed as a consortium. By contrast, Enterobacter species and Acinetobacter calcoaceticus were prominent in the original specimen, and Bacillus species predominated after antibiotic application. Prolonged cultivation of T. viride F-00612 in liquid medium and on Czapek agar in the presence of < 100 µM phenoxazinone and < 500 µM benzoxazolinone resulted in a massive loss of bacteria accompanied by impacted fungal growth in the presence of phenoxazinone. The original consortium was actively involved in implementing metabolic sequences for the degradation and detoxification of nitrated benzoxazolinone derivatives. The 2-aminophenol was rapidly converted into acetamidophenol, but benzoxazolinone, methoxylated benzoxazolinone, and picolinic acid remained unchanged. Excluding phenoxazinone, none of the tested compounds markedly impaired fungal growth in liquid culture. In conclusion, members of the T. viride F-00612 consortium may contribute to the ability to manage benzoxazinone downstream products and facilitate BOA-6-OH degradation via nitration.
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Abstract
Abstract
Purpose
A reasonable cultivation pattern is beneficial to maintain soil microbial activity and optimize the structure of the soil microbial community. To determine the effect of tobacco−peanut (Nicotiana tabacum−Arachis hypogaea) relay intercropping on the microbial community structure in soil, we compared the effects of relay intercropping and continuous cropping on the soil bacteria community structure.
Methods
We collected soil samples from three different cropping patterns and analyzed microbial community structure and diversity using high-throughput sequencing technology.
Result
The number of operational taxonomic units (OTU) for bacterial species in the soil was maximal under continuous peanut cropping. At the phylum level, the main bacteria identified in soil were Proteobacteria, Actinobacteria, and Acidobacteria, which accounted for approximately 70% of the total. The proportions of Actinobacteria and Firmicutes increased, whereas the proportion of Proteobacteria decreased in soil with tobacco–peanut relay intercropping. Moreover, the proportions of Firmicutes and Proteobacteria among the soil bacteria further shifted over time with tobacco–peanut relay intercropping. At the genus level, the proportions of Bacillus and Lactococcus increased in soil with tobacco–peanut relay intercropping.
Conclusion
The community structure of soil bacteria differed considerably with tobacco–peanut relay intercropping from that detected under peanut continuous cropping, and the proportions of beneficial bacteria (the phyla Actinobacteria and Firmicutes, and the genera Bacillus and Lactococcus) increased while the proportion of potentially pathogenic bacteria (the genera Variibacter and Burkholderia) decreased. These results provide a basis for adopting tobacco–peanut relay intercropping to improve soil ecology and microorganisms, while making better use of limited cultivable land.
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44
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Hamard S, Robroek BJM, Allard PM, Signarbieux C, Zhou S, Saesong T, de Baaker F, Buttler A, Chiapusio G, Wolfender JL, Bragazza L, Jassey VEJ. Effects of Sphagnum Leachate on Competitive Sphagnum Microbiome Depend on Species and Time. Front Microbiol 2019; 10:2042. [PMID: 31555245 PMCID: PMC6742715 DOI: 10.3389/fmicb.2019.02042] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 08/20/2019] [Indexed: 12/03/2022] Open
Abstract
Plant specialized metabolites play an important role in soil carbon (C) and nutrient fluxes. Through anti-microbial effects, they can modulate microbial assemblages and associated microbial-driven processes, such as nutrient cycling, so to positively or negatively cascade on plant fitness. As such, plant specialized metabolites can be used as a tool to supplant competitors. These compounds are little studied in bryophytes. This is especially notable in peatlands where Sphagnum mosses can dominate the vegetation and show strong interspecific competition. Sphagnum mosses form carpets where diverse microbial communities live and play a crucial role in Sphagnum fitness by regulating C and nutrient cycling. Here, by means of a microcosm experiment, we assessed to what extent moss metabolites of two Sphagnum species (S. fallax and S. divinum) modulate the competitive Sphagnum microbiome, with particular focus on microbial respiration. Using a reciprocal leachate experiment, we found that interactions between Sphagnum leachates and microbiome are species-specific. We show that both Sphagnum leachates differed in compound richness and compound relative abundance, especially sphagnum acid derivates, and that they include microbial-related metabolites. The addition of S. divinum leachate on the S. fallax microbiome immediately reduced microbial respiration (−95%). Prolonged exposition of S. fallax microbiome to S. divinum leachate destabilized the food web structure due to a modulation of microbial abundance. In particular, leachate addition decreased the biomass of testate amoebae and rotifers but increased that of ciliates. These changes did not influence microbial CO2 respiration, suggesting that the structural plasticity of the food web leads to its functional resistance through the replacement of species that are functionally redundant. In contrast, S. fallax leachate neither affected S. divinum microbial respiration, nor microbial biomass. We, however, found that S. fallax leachate addition stabilized the food web structure associated to S. divinum by changing trophic interactions among species. The differences in allelopathic effects between both Sphagnum leachates might impact their competitiveness and affect species distribution at local scale. Our study further paves the way to better understand the role of moss and microbial specialized metabolites in peatland C dynamics.
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Affiliation(s)
- Samuel Hamard
- ECOLAB, Laboratoire d'Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Toulouse, France.,Laboratory of Ecological Systems (ECOS), Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland.,Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Lausanne, Switzerland.,Laboratoire de Géologie, UMR 8538, CNRS-ENS, Ecole Normale Supérieure, Paris, France
| | - Bjorn J M Robroek
- Laboratory of Ecological Systems (ECOS), Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland.,School of Biological Sciences, University of Southampton, Southampton, United Kingdom.,Aquatic Ecology and Environmental Biology Group, Faculty of Science, Institute for Water and Wetland Research, Radboud University, Nijmegen, Netherlands
| | - Pierre-Marie Allard
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Constant Signarbieux
- Laboratory of Ecological Systems (ECOS), Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland.,Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Lausanne, Switzerland
| | - Shuaizhen Zhou
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Tongchai Saesong
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland.,Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmaceutical Sciences and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Flore de Baaker
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Alexandre Buttler
- Laboratory of Ecological Systems (ECOS), Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland.,Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Lausanne, Switzerland.,Laboratoire Chrono-Environnement, Université Bourgogne Franche Comté, UMR CNRS 6249 USC INRA, Montbéliard, France
| | - Geneviève Chiapusio
- Laboratoire Chrono-Environnement, Université Bourgogne Franche Comté, UMR CNRS 6249 USC INRA, Montbéliard, France.,Laboratoire Carrtel, Université Savoie Mont Blanc INRA 042, Domaine Universitaire Belledonne, Le Bourget-du-Lac, France
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Luca Bragazza
- Laboratory of Ecological Systems (ECOS), Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland.,Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Lausanne, Switzerland.,Department of Life Science and Biotechnologies, University of Ferrara, Ferrara, Italy
| | - Vincent E J Jassey
- ECOLAB, Laboratoire d'Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Toulouse, France.,Laboratory of Ecological Systems (ECOS), Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland.,Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Lausanne, Switzerland
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Santonja M, Bousquet‐Mélou A, Greff S, Ormeño E, Fernandez C. Allelopathic effects of volatile organic compounds released from Pinus halepensis needles and roots. Ecol Evol 2019; 9:8201-8213. [PMID: 31380083 PMCID: PMC6662250 DOI: 10.1002/ece3.5390] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 12/12/2022] Open
Abstract
The Mediterranean region is recognized as a global biodiversity hotspot. However, over the last decades, the cessation of traditional farming in the north part of the Mediterranean basin has given way to strong afforestation leading to occurrence of abandoned agricultural lands colonized by pioneer expansionist species like Pinus halepensis. This pine species is known to synthesize a wide range of secondary metabolites, and previous studies have demonstrated strong allelopathic potentialities of its needle and root leachates. Pinus halepensis is also recognized to release significant amounts of volatile organic compounds (VOC) with potential allelopathic effects that have never been investigated. In this context, the objectives of the present study were to improve our knowledge about the VOC released from P. halepensis needles and roots, determine if these VOC affect the seed germination and root growth of two herbaceous target species (Lactuca sativa and Linum strictum), and evaluate if soil microorganisms modulate the potential allelopathic effects of these VOC. Thirty terpenes were detected from both, needle and root emissions with β-caryophyllene as the major volatile. Numerous terpenes, such as β-caryophyllene, δ-terpinene, or α-pinene, showed higher headspace concentrations according to the gradient green needles < senescent needles < needle litter. Seed germination and root growth of the two target species were mainly reduced in presence of P. halepensis VOC. In strong contrast with the trend reported with needle leachates in literature, we observed an increasing inhibitory effect of P. halepensis VOC with the progress of needle physiological stages (i.e., green needle < senescent needle < needle litter). Surprisingly, several inhibitory effects observed on filter paper were also found or even amplified when natural soil was used as a substrate, highlighting that soil microorganisms do not necessarily limit the negative effects of VOC released by P. halepensis on herbaceous target species.
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Affiliation(s)
- Mathieu Santonja
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBEMarseilleFrance
| | | | - Stéphane Greff
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBEMarseilleFrance
| | - Elena Ormeño
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBEMarseilleFrance
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46
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Portier E, Silver WL, Yang WH. Invasive perennial forb effects on gross soil nitrogen cycling and nitrous oxide fluxes depend on phenology. Ecology 2019; 100:e02716. [DOI: 10.1002/ecy.2716] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/28/2019] [Accepted: 03/11/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Evan Portier
- Ecosystem Sciences Division Department of Environmental Science, Policy, and Management University of California Berkeley California 94720 USA
| | - Whendee L. Silver
- Ecosystem Sciences Division Department of Environmental Science, Policy, and Management University of California Berkeley California 94720 USA
| | - Wendy H. Yang
- Ecosystem Sciences Division Department of Environmental Science, Policy, and Management University of California Berkeley California 94720 USA
- Departments of Plant Biology and Geology University of Illinois 505 South Goodwin Avenue Urbana Illinois 61801 USA
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47
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Plant beneficial endophytic bacteria: Mechanisms, diversity, host range and genetic determinants. Microbiol Res 2019; 221:36-49. [DOI: 10.1016/j.micres.2019.02.001] [Citation(s) in RCA: 258] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 12/11/2018] [Accepted: 02/01/2019] [Indexed: 12/13/2022]
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48
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Chiapusio G, Jassey VEJ, Bellvert F, Comte G, Weston LA, Delarue F, Buttler A, Toussaint ML, Binet P. Sphagnum Species Modulate their Phenolic Profiles and Mycorrhizal Colonization of Surrounding Andromeda polifolia along Peatland Microhabitats. J Chem Ecol 2018; 44:1146-1157. [DOI: 10.1007/s10886-018-1023-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 09/20/2018] [Accepted: 10/01/2018] [Indexed: 12/22/2022]
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49
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Xiao WL, Wang ZX, Wu FZ, Zhou XG. Effects of soil improvement technology on soil quality in solar greenhouse. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:24093-24100. [PMID: 29948685 DOI: 10.1007/s11356-018-2321-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Abstract
Currently, cucumber cultivation is mainly through monoculture, as continuous culture leads to the decrease of crop yield and soil quality. In order to improve soil quality to achieve continuous monocultures, soil physicochemical properties, microbial biomass, content of phenolic compounds, and the size of bacterial, fungal, ammonia-oxidizing bacteria (AOB), and Fusarium oxysporum were first evaluated in cucumber monoculture solar greenhouse. Soil improvement technology, including catch wheat (CW), calcium cyanamide disinfection (LN), and straw reactor technology (SR) during summer fallow period, was compared with conventional fallow (CK). Results showed that CW, LN, and SR all significantly increased soil pH, and LN and SR increased soil electrical conductivity (EC); however, CW decreased soil EC. Meanwhile, LN increased soil available N content significantly and SR increased available P content significantly. CW had negative effect on the accumulation of soil available nutrients, conversely, CW and SR had positive effect on the accumulation of microbial biomass carbon (MBC). All the treatments increased the total phenol content in the soil compared with CK. While CW increased the size of bacteria, AOB in the soil inhibited fungal and wilt pathogen size. LN also increased the size of soil bacteria and reduced the size of fungi. The comprehensive evaluation of all treatments showed that CW could control soil nutrient loss and improve the continuous cropping soil, making the soil transform from fungi to bacteria type. All the treatments accelerate the accumulation of phenolic compound, while whether or not developing autotoxicity requires further investigation.
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Affiliation(s)
- Wan-Li Xiao
- Weifang University of Science and Technology, Facility Horticulture Laboratory of Universities in Shandong, Shouguang, Shandong Province, 262700, China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, HarBin, Heilongjiang Province, 150030, China
| | - Zhe-Xin Wang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, HarBin, Heilongjiang Province, 150030, China
| | - Feng-Zhi Wu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, HarBin, Heilongjiang Province, 150030, China.
| | - Xin-Gang Zhou
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, HarBin, Heilongjiang Province, 150030, China
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David AS, Thapa-Magar KB, Afkhami ME. Microbial mitigation-exacerbation continuum: a novel framework for microbiome effects on hosts in the face of stress. Ecology 2018; 99:517-523. [DOI: 10.1002/ecy.2153] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/29/2017] [Accepted: 01/08/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Aaron S. David
- Department of Biology; University of Miami; Coral Gables Florida 33146 USA
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