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Kang SM, Bilal S, Shahzad R, Kim YN, Park CW, Lee KE, Lee JR, Lee IJ. Effect of Ammonia and Indole-3-acetic Acid Producing Endophytic Klebsiella pneumoniae YNA12 as a Bio-Herbicide for Weed Inhibition: Special Reference with Evening Primroses. PLANTS (BASEL, SWITZERLAND) 2020; 9:E761. [PMID: 32570708 PMCID: PMC7355527 DOI: 10.3390/plants9060761] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/12/2020] [Accepted: 06/12/2020] [Indexed: 11/23/2022]
Abstract
Information on the use of endophytic bacteria as a bio-herbicide for the management of weed control in agricultural fields is limited. The current study aimed to isolate endophytic bacteria from evening primroses and to screen them for their bio-herbicidal activity. Two isolated endophytic bacteria (Pantoea dispersa YNA11 and Klebsiella pneumoniae YNA12) were initially screened for citrate utilization and for indole-3-acetic acid (IAA) and catalase production. The preliminary biochemical assessment showed YNA12 as a positive strain. Ammonia, catalase, and IAA in its culture filtrate were quantified. Gas Chromatography/Mass Spectroscopy- Selective Ion Monitoring (GC/MS-SIM) analysis revealed the production of IAA by YNA12 in a time-dependent manner. YNA12 also exhibited significant ammonia-producing potential and catalase activity against hydrogen peroxide. The YNA12 culture filtrate significantly inhibited the germination rate of evening primrose seeds, resulting in a marked reduction in seedling length and biomass compared with those of the control seeds. Moreover, the culture filtrate of YNA12 significantly accelerated the endogenous abscisic acid (ABA) production and catalase activity of evening primrose seedlings. Macronutrient regulation was adversely affected in the seedlings exposed to the culture filtrate of YNA12, leading to inhibition of seed germination. The current results suggest that endophytic YNA12 may be used as a potent bio-herbicidal agent for controlling weed growth and development.
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Affiliation(s)
- Sang-Mo Kang
- Institute of Agricultural Science and Technology, Kyungpook National University, Daegu 41566, Korea;
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (Y.-N.K.); (C.-W.P.); (K.-E.L.)
| | - Saqib Bilal
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman;
| | - Raheem Shahzad
- Basic and Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia;
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Yu-Na Kim
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (Y.-N.K.); (C.-W.P.); (K.-E.L.)
| | - Chang-Wook Park
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (Y.-N.K.); (C.-W.P.); (K.-E.L.)
| | - Ko-Eun Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (Y.-N.K.); (C.-W.P.); (K.-E.L.)
| | - Jeong-Ran Lee
- Crop Protection Division, National Institute of Agricultural Science, RDA, Wanju 55365, Korea;
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (Y.-N.K.); (C.-W.P.); (K.-E.L.)
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Ogaki MB, Vieira R, Muniz MC, Zani CL, Alves TMA, Junior PAS, Murta SMF, Barbosa EC, Oliveira JG, Ceravolo IP, Pereira PO, Rosa CA, Rosa LH. Diversity, ecology, and bioprospecting of culturable fungi in lakes impacted by anthropogenic activities in Maritime Antarctica. Extremophiles 2020; 24:637-655. [PMID: 32533308 DOI: 10.1007/s00792-020-01183-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 06/02/2020] [Indexed: 12/20/2022]
Abstract
In this study, we accessed culturable fungal assemblages present in the sediments of three lakes potentially impacted anthropogenically in the Fildes Peninsula, King George Island, Antarctica and identified 63 taxa. Cladosporium sp. 2, Pseudeurotium hygrophilum, and Pseudogymnoascus verrucosus were recovered from the sampled sediments of all lakes. High concentrations of metals and the lowest fungal diversity indices were detected in the sediments of the Central Lake, which can be influenced by human activities due to their proximity to research stations to those of the other two lakes, which were far from the Antarctic stations. At least one type of biological activity was demonstrated by 40 fungal extracts. Among these, P. hygrophilum, P. verrucosus, Penicillium glabrum, and Penicillium solitum demonstrated strong trypanocidal, herbicidal, and antifungal activities. Our results suggest that an increase of the anthropogenic activities in the region might have affected the microbial diversity and composition. In addition, the fungal diversity in these lakes may be a useful model to study the effect of anthropogenic activities in Antarctica. We isolated a diverse group of fungal taxa from Antarctic lake sediments, which have the potential to produce novel compounds for the both the medical and agriculture sectors.
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Affiliation(s)
- Mayara B Ogaki
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Rosemary Vieira
- Instituto de Geociências, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - Marcelo C Muniz
- Instituto de Geociências, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - Carlos L Zani
- Instituto René Rachou, FIOCRUZ-Minas, Belo Horizonte, MG, Brasil
| | - Tânia M A Alves
- Instituto René Rachou, FIOCRUZ-Minas, Belo Horizonte, MG, Brasil
| | | | | | | | | | | | | | - Carlos A Rosa
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Luiz H Rosa
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
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Frumi Camargo A, Venturin B, Bordin ER, Scapini T, Spitza Stefanski F, Klanovicz N, Dalastra C, Kubeneck S, Preczeski KP, Rossetto V, Weirich S, Carezia C, Ulkovski C, Reichert Júnior FW, Müller C, Fongaro G, Mossi AJ, Treichel H. A Low-Genotoxicity Bioherbicide Obtained from Trichoderma koningiopsis Fermentation in a Stirred-Tank Bioreactor. Ind Biotechnol (New Rochelle N Y) 2020. [DOI: 10.1089/ind.2019.0024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Aline Frumi Camargo
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Bruno Venturin
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Eduarda Roberta Bordin
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Thamarys Scapini
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Fábio Spitza Stefanski
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Natalia Klanovicz
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Caroline Dalastra
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Simone Kubeneck
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Karina Paula Preczeski
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Vanusa Rossetto
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Sabrina Weirich
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim, Brazil
| | - Carine Carezia
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim, Brazil
| | - Cleiton Ulkovski
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim, Brazil
| | - Francisco Wilson Reichert Júnior
- Nucleus of Studies in Agrobiodiversity, Center of Agrarian Sciences, and Federal University of Santa Catarina, Florianópolis, Brazil
| | - Caroline Müller
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
| | - Gislaine Fongaro
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
- Laboratory of Applied Virology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Altemir José Mossi
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim, Brazil
| | - Helen Treichel
- Laboratory of Microbiology and Bioprocess and Federal University of Fronteira Sul, Erechim, Brazil
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Dalinova AA, Salimova DR, Berestetskiy AO. Fungi of the Genera Alternaria as Producers of Biological Active Compounds and Mycoherbicides. APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820030023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Adetunji CO, Oloke JK, Phazang P, Sarin NB. Influence of eco-friendly phytotoxic metabolites from Lasiodiplodia pseudotheobromae C1136 on physiological, biochemical, and ultrastructural changes on tested weeds. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9919-9934. [PMID: 31927737 DOI: 10.1007/s11356-020-07677-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
In this study, the active metabolites from both the wild strain of Lasiodiplodia pseudotheobromae C1136 and three genetically enhanced strains of C1136 were obtained through random mutagenesis. The effect of the active metabolites from these strains was evaluated in relation to physiological, biochemical, and ultrastructural changes on the leaves of two weeds (Amaranthus hybridus and Echinochloa crus-galli). The phytotoxic metabolites secreted by the genetically enhanced strains showed a decrease in the pigments (chl a, chl b, and carotenoids), carbohydrate content, and the amino acid profile. On the other hand, an increase in total phenols of the tested leaves was observed when compared with the untreated leaves. The scanning electron microscopy showed the presence of damages, necrosis, degradation, and ultrastructural changes on the tested leaf tissues of the weeds. Also, increased lipid peroxidation and electrolyte leakage were also observed on the tested weeds treated with phytotoxic metabolites secreted by the genetically enhanced strains. We also showed that the phytotoxins from the strains of C1136 are biocompatible and that it improved soil CO2 evolution, organic carbon content, and enzymatic activity (acidic and alkaline phosphatase, dehydrogenases, cellulase, catalase). The study validates the severe pathological effects of phytotoxic metabolites from the strains of C1136 on the leaves of the weeds presented in this study. The mode of action of the phytotoxic metabolites produced from this bioherbicidal isolates will go a long way in preventing environmental hazards.
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Affiliation(s)
- Charles Oluwaseun Adetunji
- Microbiology, Biotechnology, and Nanotechnology Laboratory, Department of Microbiology, Edo University Iyamho, Iyamho, Edo State, Nigeria.
- Laboratory of Genetic Manipulation for Stress Alleviation and Value Addition in Plants, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Julius Kola Oloke
- Department of Pure and Applied Biology, Ladoke Akintola University of Technology, P.M.B 4000, Ogbomoso, Oyo State, Nigeria
| | - Paomipem Phazang
- Laboratory of Genetic Manipulation for Stress Alleviation and Value Addition in Plants, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Neera Bhalla Sarin
- Laboratory of Genetic Manipulation for Stress Alleviation and Value Addition in Plants, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
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Masteling R, Lombard L, de Boer W, Raaijmakers JM, Dini-Andreote F. Harnessing the microbiome to control plant parasitic weeds. Curr Opin Microbiol 2019; 49:26-33. [PMID: 31654911 PMCID: PMC6906922 DOI: 10.1016/j.mib.2019.09.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/04/2019] [Accepted: 09/09/2019] [Indexed: 12/11/2022]
Abstract
Plant microbiomes have an unexplored potential to control root parasitic weeds. Understanding the mechanisms by which microbes can control parasitic weeds is largely elusive. Members of the root microbiome can interfere with host-parasite chemical communication. Direct and indirect modes of action can work synergistically in microbe-mediated weed control.
Microbiomes can significantly expand the genomic potential of plants, contributing to nutrient acquisition, plant growth promotion and tolerance to (a)biotic stresses. Among biotic stressors, root parasitic weeds (RPWs), mainly of the genera Orobanche, Phelipanche and Striga, are major yield-limiting factors of a wide range of staple crops, particularly in developing countries. Here, we provide a conceptual synthesis of putative mechanisms by which soil and plant microbiomes could be harnessed to control RPWs. These mechanisms are partitioned in direct and indirect modes of action and discussed in the context of past and present studies on microbe-mediated suppression of RPWs. Specific emphasis is given to the large but yet unexplored potential of root-associated microorganisms to interfere with the chemical signalling cascade between the host plant and the RPWs. We further provide concepts and ideas for future research directions and prospective designs of novel control strategies.
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Affiliation(s)
- Raul Masteling
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands; Institute of Biology, Leiden University, Leiden, The Netherlands.
| | - Lorenzo Lombard
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - Wietse de Boer
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands; Chair Group Soil Biology, Wageningen University and Research (WUR), Wageningen, The Netherlands
| | - Jos M Raaijmakers
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands; Institute of Biology, Leiden University, Leiden, The Netherlands.
| | - Francisco Dini-Andreote
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands; Department of Plant Science, The Pennsylvania State University, University Park, PA, USA; Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
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57
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Bo AB, Kim JD, Kim YS, Sin HT, Kim HJ, Khaitov B, Ko YK, Park KW, Choi JS. Isolation, identification and characterization of Streptomyces metabolites as a potential bioherbicide. PLoS One 2019; 14:e0222933. [PMID: 31545849 PMCID: PMC6756554 DOI: 10.1371/journal.pone.0222933] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/10/2019] [Indexed: 11/18/2022] Open
Abstract
Bioactive herbicidal compounds produced by soil microorganisms might be used to creating a bioherbicide for biological weed control. A total of 1,300 bacterial strains were isolated and screened for herbicidal activity against grass and broadleaf weeds. Among primarily selected 102 strains, the herbicidal activity of bacterial fermentation broths from the following three isolates strain-101, strain-128, and strain-329 reduced the growth of D. sanguinalis by 66.7%, 78.3%, and 100%, respectively as compared with control. Phylogenetic analysis of 16S rRNA gene sequencing determined that the strain-329 has 99% similarity to Streptomyces anulatus (HBUM 174206). The potential bioherbicidal efficacy of Streptomyces strain-329 was tested on grass and broadleaf weeds for phytotoxic activity through pre- and post-emergence applications. At pre-emergence application, the phytotoxic efficacy to D. sanguinalis and S. bicolor on seed germination were 90.4% and 81.3%, respectively at the 2x concentration, whereas in the case of Solanum nigrum, 85.2% phytotoxic efficacy was observed at the 4x concentration. The efficacy of Streptomyces strain-329 was substantially higher at post-emergence application, presenting 100% control of grass and broadleaf weeds at the 1x concentration. Two herbicidal compounds coded as 329-C1 and 329-C3 were extracted and purified by column chromatography and high-performance liquid chromatography methods. The active compound 329-C3 slightly increased leaf electrolytic leakage and MDA production as concentration-dependent manner. These results suggest that new Streptomyces sp. strain-329 produced bioherbicidal metabolites and may provide a new lead molecule for production an efficient bioherbicide to regulate grass and broadleaf weeds.
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Affiliation(s)
- Aung B Bo
- Department of Crop Science, Chungnam National University, Daejeon, Korea
| | - Jae D Kim
- Eco-friendly and New Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Young S Kim
- Eco-friendly and New Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Hun T Sin
- Department of Crop Science, Chungnam National University, Daejeon, Korea
| | - Hye J Kim
- Eco-friendly and New Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Botir Khaitov
- Department of Crop Science, Chungnam National University, Daejeon, Korea
| | - Young K Ko
- Eco-friendly and New Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Kee W Park
- Department of Crop Science, Chungnam National University, Daejeon, Korea
| | - Jung S Choi
- Eco-friendly and New Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon, Korea
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Phytotoxic Activity and Structure-Activity Relationships of Radicinin Derivatives against the Invasive Weed Buffelgrass ( Cenchrus ciliaris). Molecules 2019; 24:molecules24152793. [PMID: 31370299 PMCID: PMC6696439 DOI: 10.3390/molecules24152793] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 07/26/2019] [Accepted: 07/30/2019] [Indexed: 11/20/2022] Open
Abstract
Radicinin (1), is a fungal dihydropyranopyran-4,5-dione isolated together with some analogues, namely 3-epi-radicinin, radicinol, 3-epi-radicinol, and cochliotoxin (2–5), from the culture filtrates of the fungus Cochliobolus australiensis, a foliar pathogen of buffelgrass (Cenchrus ciliaris), an invasive weed in North America. Among the different metabolites 1 showed target-specific activity against the host plant and no toxicity on zebrafish embryos, promoting its potential use to develop a natural bioherbicide formulation to manage buffelgrass. These data and the peculiar structural feature of 1 suggested to carry out a structure-activity relationship study, preparing some key hemisynthetic derivatives and to test their phytotoxicity. In particular, p-bromobenzoyl, 5-azidopentanoyl, stearoyl, mesyl and acetyl esters of radicinin were semisynthesized as well as the monoacetyl ester of 3-epi-radicinin, the diacetyl esters of radicinol and its 3 epimer, and two hexa-hydro derivatives of radicinin. The spectroscopic characterization and the activity by leaf puncture bioassay against buffelgrass of all the derivatives is reported. Most of the compounds showed phytotoxicity but none of them had comparable or higher activity than radicinin. Thus, the presence of an α,β unsaturated carbonyl group at C-4, as well as, the presence of a free secondary hydroxyl group at C-3 and the stereochemistry of the same carbon proved to be the essential feature for activity.
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Berestetskiy AO, Dalinova AA, Volosatova NS. Metabolite Profiles and Biological Activity of Extracts from Alternaria sonchi S-102 Culture Grown by Different Fermentation Methods. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819030049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pasin F, Menzel W, Daròs J. Harnessed viruses in the age of metagenomics and synthetic biology: an update on infectious clone assembly and biotechnologies of plant viruses. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:1010-1026. [PMID: 30677208 PMCID: PMC6523588 DOI: 10.1111/pbi.13084] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/09/2018] [Accepted: 01/15/2019] [Indexed: 05/12/2023]
Abstract
Recent metagenomic studies have provided an unprecedented wealth of data, which are revolutionizing our understanding of virus diversity. A redrawn landscape highlights viruses as active players in the phytobiome, and surveys have uncovered their positive roles in environmental stress tolerance of plants. Viral infectious clones are key tools for functional characterization of known and newly identified viruses. Knowledge of viruses and their components has been instrumental for the development of modern plant molecular biology and biotechnology. In this review, we provide extensive guidelines built on current synthetic biology advances that streamline infectious clone assembly, thus lessening a major technical constraint of plant virology. The focus is on generation of infectious clones in binary T-DNA vectors, which are delivered efficiently to plants by Agrobacterium. We then summarize recent applications of plant viruses and explore emerging trends in microbiology, bacterial and human virology that, once translated to plant virology, could lead to the development of virus-based gene therapies for ad hoc engineering of plant traits. The systematic characterization of plant virus roles in the phytobiome and next-generation virus-based tools will be indispensable landmarks in the synthetic biology roadmap to better crops.
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Affiliation(s)
- Fabio Pasin
- Agricultural Biotechnology Research CenterAcademia SinicaTaipeiTaiwan
| | - Wulf Menzel
- Leibniz Institute DSMZ‐German Collection of Microorganisms and Cell CulturesBraunschweigGermany
| | - José‐Antonio Daròs
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas‐Universitat Politècnica de València)ValenciaSpain
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Reichert Júnior FW, Scariot MA, Forte CT, Pandolfi L, Dil JM, Weirich S, Carezia C, Mulinari J, Mazutti MA, Fongaro G, Galon L, Treichel H, Mossi AJ. New perspectives for weeds control using autochthonous fungi with selective bioherbicide potential. Heliyon 2019; 5:e01676. [PMID: 31193093 PMCID: PMC6517331 DOI: 10.1016/j.heliyon.2019.e01676] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 02/06/2019] [Accepted: 05/03/2019] [Indexed: 11/29/2022] Open
Abstract
The prospection of bioherbicides has been an alternative to weed control, aiming at mitigating chemical risks to human, animal and environmental health due to extreme use of synthetic herbicides. In the present study, various fungi were isolated from plants with symptoms of fungal diseases for bioherbicide purposes against weeds (Urochloa plantaginea, Euphorbia heterophylla and Bidens pilosa). Fungi isolated were identified by molecular methods and enzymatic products obtained by fungi fermentation (cellulase, lipase, peroxidase, and amylase) were quantified. Bioherbicide selectivity study was performed on crops (soybean and corn), as well as on resistant weeds. Among the isolated fungi, Fusarium oxysporum, Fusarium ploriferatum, and Trichoderma koningiopsis presented bioherbicide potential. T. koningiopsis, in particular, presented the highest effect on Euphorbia heterophylla (popular name - Mexican fire plant), causing up to 60% of foliar damage, without presenting phytotoxicity against corn crop. New perspectives for weeds control and their use in corn crops were prospected, considering the bioherbicide selectivity described in this study.
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Affiliation(s)
| | - Maurício Albertoni Scariot
- Graduate Program in Plant Science, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue, Porto Alegre, Brazil
| | - César Tiago Forte
- Graduate Program in Agronomy, Federal University of Santa Maria, Roraima Avenue, Camobi, Santa Maria, Brazil
| | - Leonardo Pandolfi
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim campus, RS-135, Rural Area, Erechim, Brazil
| | - Jaqueline Mara Dil
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim campus, RS-135, Rural Area, Erechim, Brazil
| | - Sabrina Weirich
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim campus, RS-135, Rural Area, Erechim, Brazil
| | - Carine Carezia
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim campus, RS-135, Rural Area, Erechim, Brazil
| | - Jéssica Mulinari
- Department of Chemical Engineering, Federal University of Santa Catarina, João Pio Duarte Silva street, Córrego Grande, Florianópolis, Brazil
| | - Marcio Antônio Mazutti
- Department of Chemical Engineering, Federal University of Santa Maria, Roraima Avenue, Camobi, Santa Maria, Brazil
| | - Gislaine Fongaro
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, Erechim campus, RS-135, Rural Area, Erechim, Brazil
| | - Leandro Galon
- Laboratory of Sustainable Management of Agricultural Systems, Department of Environmental Science and Technology, Federal University of Fronteira Sul, Erechim, Brazil
| | - Helen Treichel
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, Erechim campus, RS-135, Rural Area, Erechim, Brazil
| | - Altemir José Mossi
- Laboratory of Agroecology, Federal University of Fronteira Sul, Erechim campus, RS-135, Rural Area, Erechim, Brazil
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Wang RL, Zhu-Salzman K, Elzaki MEA, Huang QQ, Chen S, Ma ZH, Liu SW, Zhang JE. Mikania Micrantha Wilt Virus Alters Insect Vector's Host Preference to Enhance Its Own Spread. Viruses 2019; 11:E336. [PMID: 30970658 PMCID: PMC6521231 DOI: 10.3390/v11040336] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/08/2019] [Accepted: 04/08/2019] [Indexed: 01/29/2023] Open
Abstract
As an invasive weed, Mikaniamicrantha Kunth has caused serious damage to natural forest ecosystems in South China in recent years. Mikania micrantha wilt virus (MMWV), an isolate of the Gentian mosaic virus (GeMV), is transmitted by Myzuspersicae (Sulzer) in a non-persistent manner and can effectively inhibit the growth of M. micrantha. To explore the MMWV-M. micrantha-M. persicae interaction and its impact on the invasion of M. micrantha, volatile compounds (VOCs) emitted from healthy, mock-inoculated, and MMWV-infected plants were collected, and effects on host preference of the apterous and alate aphids were assessed with Y-shaped olfactometers. Gas chromatography-mass spectrometry (GC-MS) analysis indicated that MMWV infection changed the VOC profiles, rendering plants more attractive to aphids. Clip-cages were used to document the population growth rate of M.persicae fed on healthy, mock-inoculated, or MMWV-infected plants. Compared to those reared on healthy plants, the population growth of M. persicae drastically decreased on the MMWV-infected plants. Plant host choice tests based on visual and contact cues were also conducted using alate M.persicae. Interestingly, the initial attractiveness of MMWV-infected plants diminished, and more alate M. persicae moved to healthy plants. Taken together, MMWV appeared to be able to manipulate its plant host to first attract insect vectors to infected plants but then repel viruliferous vectors to promote its own dispersal. Its potential application for invasive weed management is discussed.
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Affiliation(s)
- Rui-Long Wang
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
| | - Keyan Zhu-Salzman
- Departments of Entomology, Texas A&M University, College Station, TX 77843, USA.
| | | | - Qiao-Qiao Huang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China.
| | - Shi Chen
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
| | - Zhi-Hui Ma
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
| | - Shi-Wei Liu
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
| | - Jia-En Zhang
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
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63
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Robin DC, Marchand PA. Evolution of the biocontrol active substances in the framework of the European Pesticide Regulation (EC) No. 1107/2009. PEST MANAGEMENT SCIENCE 2019; 75:950-958. [PMID: 30192046 DOI: 10.1002/ps.5199] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/28/2018] [Accepted: 08/31/2018] [Indexed: 05/10/2023]
Abstract
BACKGROUND The use of biocontrol agents (BCA) is growing strongly with a market of €1.9 billion worldwide and €542 million in Europe, and an estimated annual growth of between 15% and 20%. Biocontrol substances use natural mechanisms as part of integrated pest management. With the exception of macro-organisms, substances or products comprising microorganisms, semiochemicals and natural substances depend on plant protection Regulation (EC) No. 1107/2009. RESULTS When this regulation came into force, a number of BCA had already been approved. The total number of BCA rose during the period 2011-2018 to ∼ 60 substances in line with global growth in approved substances. This growth was not smooth or equal between biocontrol categories; the microorganisms category increased the most, with a doubling of the number of approved substances in use, followed by natural substances and semiochemicals. CONCLUSION This positive development has been influenced by many factors such as scientific advances and environmental characteristics. However, some obstacles remain that limit the development of BCA (market size, variability in effectiveness, etc.). Regulatory measures could be a key to enhancing the development of biocontrol registrations. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Diane C Robin
- Inputs Dept, Institut Technique de l'Agriculture Biologique (ITAB), Paris, France
| | - Patrice A Marchand
- Inputs Dept, Institut Technique de l'Agriculture Biologique (ITAB), Paris, France
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Masi M, Freda F, Sangermano F, Calabrò V, Cimmino A, Cristofaro M, Meyer S, Evidente A. Radicinin, a Fungal Phytotoxin as a Target-Specific Bioherbicide for Invasive Buffelgrass ( Cenchrus ciliaris) Control. Molecules 2019; 24:molecules24061086. [PMID: 30893868 PMCID: PMC6470967 DOI: 10.3390/molecules24061086] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 12/11/2022] Open
Abstract
The fungal pathogens Cochliobolus australiensis and Pyricularia grisea have recently been isolated from diseased leaves of buffelgrass (Cenchrus ciliaris) in its North American range, and their ability to produce phytotoxic metabolites that could potentially be used as natural herbicides against this invasive weed was investigated. Fourteen secondary metabolites obtained from in vitro cultures of these two pathogens were tested by leaf puncture assay on the host plant at different concentrations. Radicinin and (10S, 11S)-epi-pyriculol proved to be the most promising compounds. Thus, their phytotoxic activity was also evaluated on non-host indigenous plants. Radicinin demonstrated high target-specific toxicity on buffelgrass, low toxicity to native plants, and no teratogenic, sub-lethal, or lethal effects on zebrafish (Brachydanio rerio) embryos. It is now under consideration for the development of a target-specific bioherbicide to be used against buffelgrass in natural systems where synthetic herbicides cause excessive damage to native plants.
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Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy.
| | | | - Felicia Sangermano
- Dipartimento di Biologia, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy.
| | - Viola Calabrò
- Dipartimento di Biologia, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy.
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy.
| | - Massimo Cristofaro
- BBCA onlus, Via A. Signorelli 105, 00123 Rome, Italy.
- ENEA C.R. Casaccia, SSPT-BIOAG-PROBIO, Via Anguillarese 301, 00123 Rome, Italy.
| | - Susan Meyer
- U.S. Forest Service Rocky Mountain Research Station, Shrub Sciences Laboratory, 735 North 500 East, Provo, UT 84606, USA.
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy.
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65
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Dang Z, McLenachan PA, Lockhart PJ, Waipara N, Er O, Reynolds C, Blanchon D. Metagenome Profiling Identifies Potential Biocontrol Agents for Selaginella kraussiana in New Zealand. Genes (Basel) 2019; 10:genes10020106. [PMID: 30709012 PMCID: PMC6409722 DOI: 10.3390/genes10020106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/18/2019] [Accepted: 01/22/2019] [Indexed: 11/16/2022] Open
Abstract
Metagenomics can be used to identify potential biocontrol agents for invasive species and was used here to identify candidate species for biocontrol of an invasive club moss in New Zealand. Profiles were obtained for Selaginella kraussiana collected from nine geographically disjunct locations in Northern New Zealand. These profiles were distinct from those obtained for the exotic club moss Selaginella moellendorffii and the native club mosses Lycopodium deuterodensum and Lycopodium volubile also collected in Northern New Zealand. Fungi and bacteria implicated elsewhere in causing plant disease were identified on plants of Selaginella that exhibited signs of necrosis. Most notably, high densities of sequence reads from Xanthomonas translucens and Pseudomonas syringae were associated with some populations of Selaginella but not Lycopodium. Since these bacteria are already in use as biocontrol agents elsewhere, further investigation into their potential as biocontrol of Selaginella in New Zealand is suggested.
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Affiliation(s)
- Zhenhua Dang
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
| | - Patricia A McLenachan
- Institute of Fundamental Sciences, College of Sciences, Massey University, Palmerston North 4442, New Zealand.
| | - Peter J Lockhart
- Institute of Fundamental Sciences, College of Sciences, Massey University, Palmerston North 4442, New Zealand.
| | - Nick Waipara
- The New Zealand Institute for Plant & Food Research Limited, Mt Albert, Auckland 1142, New Zealand.
| | - Orhan Er
- Arborlab Consultancy Services, Auckland 0632, New Zealand.
| | | | - Dan Blanchon
- School of Environmental and Animal Sciences, Unitec Institute of Technology, Private Bag 92025, Auckland 1142, New Zealand.
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Wu HY, Yang FL, Li LH, Rao YK, Ju TC, Wong WT, Hsieh CY, Pivkin MV, Hua KF, Wu SH. Ergosterol peroxide from marine fungus Phoma sp. induces ROS-dependent apoptosis and autophagy in human lung adenocarcinoma cells. Sci Rep 2018; 8:17956. [PMID: 30560887 PMCID: PMC6298985 DOI: 10.1038/s41598-018-36411-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 11/21/2018] [Indexed: 12/11/2022] Open
Abstract
As part of our ongoing search for novel therapeutic structures from microorganism, the chemical examination of marine fungus Phoma sp. resulted in the isolation of ergosterol, ergosterol peroxide (EP), and 9,11-dehydroergosterol peroxide (DEP). The bioassay results demonstrated that the three isolates reduced the viability of various cancer cells, with EP being highest in human lung cancer cell line A549 cells. EP induced caspase-dependent apoptosis through mitochondrial damage in A549 cells. Additionally, EP-induced ROS generation and apoptosis were attenuated by ROS-generating enzymes inhibitors and antioxidant N-acetylcysteine, indicated that ROS played an important role in EP-mediated apoptosis in A549 cells. Furthermore, it was observed that EP induced ROS-dependent autophagy, which attenuated apoptosis in A549 cells. On the other hand, EP reduced the LPS/ATP-induced proliferation and migration of A549 cells through attenuated NLRP3 inflammasome activity. Additionally, EP showed synergistic cytotoxic effect with antitumor drug Sorafenib in A549 cell viability inhibition. Furthermore, Micro-Western Array and Western blot analyses demonstrated that the protein levels of EGFR, HSP27, MEK5, AKT1, mTOR, Smad2, Smad3, TAB1, NF-κB, and HIF1-α decreased, while the levels of p-p38α, p-ERK1/2, p-JNK, fibronectin and p27 increased. Collectively, the results of this study demonstrated that EP might be useful to develop a therapeutic candidate for lung cancer complications.
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Affiliation(s)
- Han-Ying Wu
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica, Taipei, Taiwan.,Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan
| | - Feng-Ling Yang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Lan-Hui Li
- Department of Laboratory Medicine, Linsen, Chinese Medicine and Kunming Branch, Taipei City Hospital, Taipei, Taiwan
| | - Yerra Koteswara Rao
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
| | - Tz-Chuen Ju
- Department of Animal Science and Biotechnology, Tunghai University, Taichung, Taiwan
| | - Wei-Ting Wong
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Chih-Yu Hsieh
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
| | - Michael V Pivkin
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry FEB RAS, Vladivostok, Russia
| | - Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan. .,Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan. .,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.
| | - Shih-Hsiung Wu
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.
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67
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Ahmad M, Pataczek L, Hilger TH, Zahir ZA, Hussain A, Rasche F, Schafleitner R, Solberg SØ. Perspectives of Microbial Inoculation for Sustainable Development and Environmental Management. Front Microbiol 2018; 9:2992. [PMID: 30568644 PMCID: PMC6289982 DOI: 10.3389/fmicb.2018.02992] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/19/2018] [Indexed: 11/13/2022] Open
Abstract
How to sustainably feed a growing global population is a question still without an answer. Particularly farmers, to increase production, tend to apply more fertilizers and pesticides, a trend especially predominant in developing countries. Another challenge is that industrialization and other human activities produce pollutants, which accumulate in soils or aquatic environments, contaminating them. Not only is human well-being at risk, but also environmental health. Currently, recycling, land-filling, incineration and pyrolysis are being used to reduce the concentration of toxic pollutants from contaminated sites, but too have adverse effects on the environment, producing even more resistant and highly toxic intermediate compounds. Moreover, these methods are expensive, and are difficult to execute for soil, water, and air decontamination. Alternatively, green technologies are currently being developed to degrade toxic pollutants. This review provides an overview of current research on microbial inoculation as a way to either replace or reduce the use of agrochemicals and clean environments heavily affected by pollution. Microorganism-based inoculants that enhance nutrient uptake, promote crop growth, or protect plants from pests and diseases can replace agrochemicals in food production. Several examples of how biofertilizers and biopesticides enhance crop production are discussed. Plant roots can be colonized by a variety of favorable species and genera that promote plant growth. Microbial interventions can also be used to clean contaminated sites from accumulated pesticides, heavy metals, polyaromatic hydrocarbons, and other industrial effluents. The potential of and key processes used by microorganisms for sustainable development and environmental management are discussed in this review, followed by their future prospects.
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Affiliation(s)
- Maqshoof Ahmad
- Department of Soil Science, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Lisa Pataczek
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Stuttgart, Germany
| | - Thomas H. Hilger
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Stuttgart, Germany
| | - Zahir Ahmad Zahir
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Azhar Hussain
- Department of Soil Science, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Frank Rasche
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Stuttgart, Germany
| | | | - Svein Ø. Solberg
- World Vegetable Center, Tainan, China
- Inland Norway University of Applied Sciences, Elverum, Norway
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68
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Predicted potential distribution of Sydowia japonica in Japan. MYCOSCIENCE 2018. [DOI: 10.1016/j.myc.2018.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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69
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Radhakrishnan R, Alqarawi AA, Abd Allah EF. Bioherbicides: Current knowledge on weed control mechanism. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 158:131-138. [PMID: 29677595 DOI: 10.1016/j.ecoenv.2018.04.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/03/2018] [Accepted: 04/07/2018] [Indexed: 05/27/2023]
Abstract
Weed control is a challenging event during crop cultivation. Integrated management, including the application of bioherbicides, is an emerging method for weed control in sustainable agriculture. Plant extracts, allelochemicals and some microbes are utilized as bioherbicides to control weed populations. Bioherbicides based on plants and microbes inhibit the germination and growth of weeds; however,few studies conducted in weed physiology. This review ascribes the current knowledge of the physiological changes in weeds that occur during the exposure to bioherbicides. Plant extracts or metabolites are absorbed by weed seeds, which initiates damage to the cell membrane, DNA, mitosis, amylase activity and other biochemical processes and delays or inhibits seed germination. The growth of weeds is also retarded due to low rates of root-cell division, nutrient uptake, photosynthetic pigment synthesis, and plant growth hormone synthesis, while the productions of reactive oxygen species (ROS) and stress-mediated hormones increase, including irregular antioxidant activity. However, lytic enzymes and toxic substances secreted from microbes degrade the weed seed coat and utilize the endosperm for survival, which inhibits seed germination. The microbes grow through the intercellular spaces to reach the root core, and the deposition of toxins in the cells affects cell division and cellular functions. Some of the metabolites of deleterious microbes cause disease, necrosis and chlorosis,which inhibit the germination and growth of weed seeds by suppressing photosynthesis and gibberellin activities and enhancing ROS, abscisic acid and ethylene. This review explains the effects of bioherbicides (derived from plants and microbes) on weed-plant physiology to elucidate their modes of action.
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Affiliation(s)
| | - Abdulaziz A Alqarawi
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia
| | - Elsayed Fathi Abd Allah
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia.
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70
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Matyjaszczyk E. Plant protection means used in organic farming throughout the European Union. PEST MANAGEMENT SCIENCE 2018; 74:505-510. [PMID: 29124883 DOI: 10.1002/ps.4789] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/02/2017] [Accepted: 11/05/2017] [Indexed: 05/17/2023]
Abstract
Following the obligatory implementation of integrated pest management in the European Union (EU), the plant protection means suitable for application in organic agriculture attracted the attention of quite a wide group of potential users. In spite of the common rules of organic production, as well as the uniform principles of placing plant protection products on the market, the availability of products that can be legally used in organic crop protection differs significantly among the Member States. There is a uniform list of 10 basic substances that can be used in the protection of organic crops throughout the entire EU. Twelve Member States have official registers of plant protection products for use in organic agriculture, and the total number of qualified products per country varies from 11 in Lithuania to 576 in Italy. Some products that improve plant vigour or resistance and may be of use in protection of organic crops are placed on the market as biostimulants. They fall under the law that governs fertilisers and the systems of their registration vary widely among the Member States. In addition, there exist a number of products that have been legally introduced onto the markets of some Member States without registration as a consequence of a loophole in the law. The use of unregistered products in organic agriculture raises some doubts, but currently it seems that there is no legal basis on which to explicitly prohibit the practice. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Ewa Matyjaszczyk
- Plant Protection Institute - National Research Institute, Poznań, Poland
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71
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Comparative genome analysis of the vineyard weed endophyte Pseudomonas viridiflava CDRTc14 showing selective herbicidal activity. Sci Rep 2017; 7:17336. [PMID: 29229911 PMCID: PMC5725424 DOI: 10.1038/s41598-017-16495-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 11/13/2017] [Indexed: 12/17/2022] Open
Abstract
Microbes produce a variety of secondary metabolites to be explored for herbicidal activities. We investigated an endophyte Pseudomonas viridiflava CDRTc14, which impacted growth of its host Lepidium draba L., to better understand the possible genetic determinants for herbicidal and host-interaction traits. Inoculation tests with a variety of target plants revealed that CDRTc14 shows plant-specific effects ranging from beneficial to negative. Its herbicidal effect appeared to be dose-dependent and resembled phenotypically the germination arrest factor of Pseudomonas fluorescens WH6. CDRTc14 shares 183 genes with the herbicidal strain WH6 but the formylaminooxyvinylglycine (FVG) biosynthetic genes responsible for germination arrest of WH6 was not detected. CDRTc14 showed phosphate solubilizing ability, indole acetic acid and siderophores production in vitro and harbors genes for these functions. Moreover, genes for quorum sensing, hydrogen cyanide and ACC deaminase production were also found in this strain. Although, CDRTc14 is related to plant pathogens, we neither found a complete pathogenicity island in the genome, nor pathogenicity symptoms on susceptible plant species upon CDRTc14 inoculation. Comparison with other related genomes showed several unique genes involved in abiotic stress tolerance in CDRTc14 like genes responsible for heavy metal and herbicide resistance indicating recent adaptation to plant protection measures applied in vineyards.
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Masi M, Meyer S, Clement S, Pescitelli G, Cimmino A, Cristofaro M, Evidente A. Chloromonilinic Acids C and D, Phytotoxic Tetrasubstituted 3-Chromanonacrylic Acids Isolated from Cochliobolus australiensis with Potential Herbicidal Activity against Buffelgrass (Cenchrus ciliaris). JOURNAL OF NATURAL PRODUCTS 2017; 80:2771-2777. [PMID: 29039952 DOI: 10.1021/acs.jnatprod.7b00583] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The fungal pathogen Cochliobolus australiensis isolated from infected leaves of the invasive weed buffelgrass (Pennisetum ciliare) was grown in vitro to evaluate its ability to produce phytotoxic metabolites that could potentially be used as natural herbicides against this weed. Two new tetrasubstituted 3-chromanonacrylic acids, named chloromonilinic acids C (1) and D (2), were isolated from the liquid cultures of C. australiensis, together with the known chloromonilinic acid B. Chloromonilinic acids C and D were characterized by spectroscopic and chemical methods as (E)-3-chloro-3-[(5-hydroxy-3-(1-hydroxy-2-methoxy-2-oxoethyl)-7-methyl-4-oxo-4H-chromen-2-yl)]acrylic acid and (Z)-3-chloro-3-[(5-hydroxy-3-(2-methoxy-2-oxoethyl)-7-methyl-4-oxo-4H-chromen-2-yl)]acrylic acid, respectively. The stereochemistry of chloromonilinic acids C and D was determined using a combination of spectroscopic and computational methods, including electronic circular dichroism. The fungus produced these compounds in two different liquid media together with cochliotoxin, radicinin, radicinol, and their 3-epimers. The radicinin-related compounds were also produced when the fungus was grown in wheat seed solid culture, but chloromonilinic acids were not found in the solid culture organic extract. All three chloromonilinic acids were toxic to buffelgrass in a seedling elongation bioassay, with significantly delayed germination and dramatically reduced radicle growth, especially at a concentration of 5 × 10-3 M.
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Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
- BBCA onlus , Via A. Signorelli 105, 00123 Rome, Italy
| | - Susan Meyer
- U.S. Forest Service Rocky Mountain Research Station, Shrub Sciences Laboratory , 735 North 500 East, Provo, Utah 84606, United States
| | - Suzette Clement
- U.S. Forest Service Rocky Mountain Research Station, Shrub Sciences Laboratory , 735 North 500 East, Provo, Utah 84606, United States
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , Via Moruzzi 13, 56124 Pisa, Italy
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Massimo Cristofaro
- BBCA onlus , Via A. Signorelli 105, 00123 Rome, Italy
- ENEA C.R. Casaccia, SSPT-BIOAG-PROBIO , Via Anguillarese 301, 00123 Rome, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli "Federico II", Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
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73
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Isolation, identification, characterization, and screening of rhizospheric bacteria for herbicidal activity. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s13165-017-0184-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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74
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Bastos BDO, Deobald GA, Brun T, Dal Prá V, Junges E, Kuhn RC, Pinto AK, Mazutti MA. Solid-state fermentation for production of a bioherbicide from Diaporthe sp. and its formulation to enhance the efficacy. 3 Biotech 2017; 7:135. [PMID: 28593519 PMCID: PMC5462655 DOI: 10.1007/s13205-017-0751-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 01/23/2017] [Indexed: 01/30/2023] Open
Abstract
In this study, a bioherbicide was produced by solid-state fermentation (SSF) using Diaporthe sp. Adjuvants were employed in a formulation to enhance the herbicidal activity towards the target (Cucumis sativus). The study was divided into two steps: (1) the fermentation condition for bioherbicide production was assessed; (2) evaluation of different formulations containing palm oil, Tween® 80 and Span® 80, in order to increase phytotoxicity. In step 1, the maximum herbicidal activity (1.23% of the leaves had lesions) was obtained at 25 °C, moisture content of 50 wt%, supplemented with 10 wt% of corn steep liquor and soybean bran and inoculum density of 15 wt%. In step 2, the formulation containing 8.2 wt% of palm oil, 8.2 wt% of Tween® 80 and Span® 80, resulting in an HLB of 12.8 showed the highest phytotoxicity on the leaves. At this condition, dry matter and height of target were reduced about 36% in comparison with control. Diaporthe sp. has the potential to produce molecules with herbicidal activity and the use of adjuvants enhanced three times its efficiency.
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Affiliation(s)
- Bruna de Oliveira Bastos
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Gabriel Antônio Deobald
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Thiarles Brun
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Valéria Dal Prá
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Emanuele Junges
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, Rua 20 de Setembro, 2616, São Vicente do Sul, RS, 97420-000, Brazil
| | - Raquel C Kuhn
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Aniela Kempka Pinto
- Department of Food Engineering and Chemical Engineering, Santa Catarina State University (UDESC), SC 469, Km 01, Pinhalzinho, 89870-000, Brazil
| | - Marcio A Mazutti
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil.
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Draft Genome Sequence of the Plant Growth-Promoting Pseudomonas punonensis Strain D1-6 Isolated from the Desert Plant Erodium hirtum in Jordan. GENOME ANNOUNCEMENTS 2017; 5:5/2/e01437-16. [PMID: 28082490 PMCID: PMC5256217 DOI: 10.1128/genomea.01437-16] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Pseudomonas punonensis strain D1-6 was isolated from roots of the desert plant Erodium hirtum, near the Dead Sea in Jordan. The genome of strain D1-6 reveals several key plant growth-promoting and herbicide-resistance genes, indicating a possible specialized role for this endophyte.
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Brun T, Rabuske JE, Todero I, Almeida TC, Junior JJD, Ariotti G, Confortin T, Arnemann JA, Kuhn RC, Guedes JVC, Mazutti MA. Production of bioherbicide by Phoma sp. in a stirred-tank bioreactor. 3 Biotech 2016; 6:230. [PMID: 28330302 PMCID: PMC5083679 DOI: 10.1007/s13205-016-0557-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 10/20/2016] [Indexed: 11/29/2022] Open
Abstract
The objective of this work was to produce an herbicide by submerged fermentation in a stirred-tank bioreactor and to assess the potential herbicidal in pre-emergence, post-emergence, and in a detached leaves of Cucumis sativus var species. wisconsin (cucumber) and Sorghum bicolor (sorghum) species. Fermentations were carried out in a stirred-tank bioreactor with useful volume of 3L. Stirring rate (40, 50, and 60 rpm) and aeration (1, 2 and 3 vvm) were the variables studied for bioherbicide production. Fermented broth was fractioned with different solvents to identify the molecules produced by the fungus in a multi-dimensional gas chromatograph system. Bioherbicide showed 100% inhibition of germination of both species in the pre-emergence tests. From detached leaves tests were verified yellowish lesions in Cucumis sativus and necrotic lesions on leaves of Sorghum bicolor. Post-emergence test presented variation of the phytotoxicity from 25 to 66% for the species C. sativus and from 32 to 58% by S. bicolor. The metabolites produced by submerged fermentation of Phoma sp. presented activity in pre-emergence, post-emergence, and detached leaves of C. sativus and S. bicolor and it could be an alternative in the future for weed control.
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Affiliation(s)
- Thiarles Brun
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Jéssica E Rabuske
- Department of Crop Protection, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Izelmar Todero
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Thiago C Almeida
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Jair J D Junior
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Gustavo Ariotti
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Tássia Confortin
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Jonas A Arnemann
- Department of Crop Protection, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Raquel C Kuhn
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Jerson V C Guedes
- Department of Crop Protection, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Marcio A Mazutti
- Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS, 97105-900, Brazil.
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77
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Parnell JJ, Berka R, Young HA, Sturino JM, Kang Y, Barnhart DM, DiLeo MV. From the Lab to the Farm: An Industrial Perspective of Plant Beneficial Microorganisms. FRONTIERS IN PLANT SCIENCE 2016; 7:1110. [PMID: 27540383 PMCID: PMC4973397 DOI: 10.3389/fpls.2016.01110] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/12/2016] [Indexed: 05/18/2023]
Abstract
Any successful strategy aimed at enhancing crop productivity with microbial products ultimately relies on the ability to scale at regional to global levels. Microorganisms that show promise in the lab may lack key characteristics for widespread adoption in sustainable and productive agricultural systems. This paper provides an overview of critical considerations involved with taking a strain from discovery to the farmer's field. In addition, we review some of the most effective microbial products on the market today, explore the reasons for their success and outline some of the major challenges involved in industrial production and commercialization of beneficial strains for widespread agricultural application. General processes associated with commercializing viable microbial products are discussed in two broad categories, biofertility inoculants and biocontrol products. Specifically, we address what farmers desire in potential microbial products, how mode of action informs decisions on product applications, the influence of variation in laboratory and field study data, challenges with scaling for mass production, and the importance of consistent efficacy, product stability and quality. In order to make a significant impact on global sustainable agriculture, the implementation of plant beneficial microorganisms will require a more seamless transition between laboratory and farm application. Early attention to the challenges presented here will improve the likelihood of developing effective microbial products to improve crop yields, decrease disease severity, and help to feed an increasingly hungry planet.
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78
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Trognitz F, Hackl E, Widhalm S, Sessitsch A. The role of plant-microbiome interactions in weed establishment and control. FEMS Microbiol Ecol 2016; 92:fiw138. [PMID: 27387910 DOI: 10.1093/femsec/fiw138] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2016] [Indexed: 12/21/2022] Open
Abstract
The soil microbiome plays an important role in the establishment of weeds and invasive plants. They associate with microorganisms supporting their growth and health. Weed management strategies, like tillage and herbicide treatments, to control weeds generally alter soil structure going alongside with changes in the microbial community. Once a weed population establishes in the field, the plants build up a close relationship with the available microorganisms. Seeds or vegetative organs overwinter in soil and select early in the season their own microbiome before crop plants start to vegetate. Weed and crop plants compete for light, nutrition and water, but may differently interact with soil microorganisms. The development of new sequencing technologies for analyzing soil microbiomes has opened up the possibility for in depth analysis of the interaction between 'undesired' plants and crop plants under different management systems. These findings will help us to understand the functions of microorganisms involved in crop productivity and plant health, weed establishment and weed prevention. Exploitation of the knowledge offers the possibility to search for new biocontrol methods against weeds based on soil and plant-associated microorganisms. This review discusses the recent advances in understanding the functions of microbial communities for weed/invasive plant establishment and shows new ways to use plant-associated microorganisms to control weeds and invasive plants in different land management systems.
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Affiliation(s)
- Friederike Trognitz
- Department of Health and Environment, AIT Austrian Institute of Technology GmbH, 3430 Tulln, Austria
| | - Evelyn Hackl
- Department of Health and Environment, AIT Austrian Institute of Technology GmbH, 3430 Tulln, Austria
| | - Siegrid Widhalm
- Department of Health and Environment, AIT Austrian Institute of Technology GmbH, 3430 Tulln, Austria
| | - Angela Sessitsch
- Department of Health and Environment, AIT Austrian Institute of Technology GmbH, 3430 Tulln, Austria
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79
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Singh B, Saxena S, Meshram V, Kumar M. Mycoherbicidal Potential of Phaeoacremonium italicum, A New Pathogen of Eichhornia crassipes Infesting Harike Wetland, India. MYCOBIOLOGY 2016; 44:85-92. [PMID: 27433118 PMCID: PMC4945542 DOI: 10.5941/myco.2016.44.2.85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 03/04/2016] [Accepted: 04/16/2016] [Indexed: 06/06/2023]
Abstract
Mycoherbicides are exclusive biotechnology products which offer a non-chemical solution to control noxious weeds on the land as well as aquatic in systems, viz a viz saving environment from hazardous impact of synthetic chemicals. The present paper highlights the mycobiota associated with Eichhornia crassipes infesting Harike wetland area of Punjab and evaluation of their pathogenic potential for futuristic application as a mycoherbicide. Of the 20 isolates tested by leaf detached assay and whole plant bioassays, only one isolate (#8 BJSSL) caused 100% damage to E. crassipes. Further, the culture filtrate of this isolate also exhibited a similar damage to the leaves in an in vitro detached leaf assay. The potential isolate was identified as Phaeoacremonium italicum using classical and modern molecular methods. This is the first report of P. italicum as a pathogen of E. crassipes and of its potential use as a biological control agent for the management of water hyacinth.
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Affiliation(s)
- Birinderjit Singh
- Department of Civil Engineering, Thapar University, Patiala, Punjab 147004, India
| | - Sanjai Saxena
- Department of Biotechnology, Thapar University, Patiala, Punjab 147004, India
| | - Vineet Meshram
- Department of Biotechnology, Thapar University, Patiala, Punjab 147004, India
| | - Maneek Kumar
- Department of Civil Engineering, Thapar University, Patiala, Punjab 147004, India
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