1
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Sharma AS, Kalia A, Sharma A, Sidhu MS, Sanghera GS, Chhabra G, Sharma M, Singh M, Patel E, Das P, Hazra S, Kaur A, Singla D, Sandhu JS. Expression of Trichoderma spp. endochitinase gene improves red rot disease resistance in transgenic sugarcane. PLoS One 2024; 19:e0310306. [PMID: 39283893 PMCID: PMC11404804 DOI: 10.1371/journal.pone.0310306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Accepted: 08/29/2024] [Indexed: 09/20/2024] Open
Abstract
Sugarcane (Saccharum spp.)is an economically useful crop grown globally for sugar, ethanol and biofuel production. The crop is vulnerable to fungus Colletotrichum falcatum known to cause red rot disease. The pathogen hydrolyses stalk parenchyma cells where sucrose is accumulated resulting in upto 75% losses in sugar recovery. In this study, transgenic sugarcane having resistance against red rot was developed by introducing Trichoderma spp. endochitinase following Agrobacterium mediated transformation. The transgene introduction and expression in genetically modified plants were verified through qRT-PCR revealing upto 6-fold enhancement in endochitinase expression than non-transgenic plants. Hyperspectral Imaging of transgenic plants displayed altered leaf reflectance spectra and vegetative indices that were positively correlated with ransgene expression. The bioassay with virulent pathotypes of C. falcatumCF08 and CF13 known for epiphytotic occurrence resulted in identification of resistant plant Chit 3-13.The plants with higher reflectance also displayed improved disease resistance, implying their early classification into resistant/susceptible. The losses in sucrose content were minimized (up to 4-fold) in inoculated resistant plant Chit 3-13 as compared to susceptible non-transgenic plant, and a fewer pathogen hyphae were detected in vascular cells of the former through optical microscopy. The electron micrographs confirmed sucrose-filled stalk parenchyma cells in Chit 3-13; in contrast, cells of non-transgenic inoculated plant were depleted of sucrose. The active sites involved in cleaving 1-4 β-glycoside bonds of N-acetyl-d-glucosaminein the pathogen hyphal walls were detected through endochitinase protein structural modelling. The transgenic sugarcane is an important source for in trogressingred rot resistance in plant breeding programs.
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Affiliation(s)
- Amandeep Sahil Sharma
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Punjab Agricultural University, Ludhiana, India
| | - Anuradha Sharma
- Punjab Agricultural University, Regional Research Station, Kapurthala, India
| | - Mehar Singh Sidhu
- Punjab Agricultural University, Regional Research Station, Kapurthala, India
| | | | - Gautam Chhabra
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Manveer Sharma
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Manjinder Singh
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Ekta Patel
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Piyali Das
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Somak Hazra
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Ajinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Deepak Singla
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Jagdeep Singh Sandhu
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
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2
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Khatoon K, Warsi ZI, Singh A, Singh K, Khan F, Singh P, Shukla RK, Verma RS, Singh MK, Verma SK, Husain Z, Parween G, Singh P, Afroz S, Rahman LU. Bridging fungal resistance and plant growth through constitutive overexpression of Thchit42 gene in Pelargonium graveolens. PLANT CELL REPORTS 2024; 43:147. [PMID: 38771491 DOI: 10.1007/s00299-024-03233-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 05/06/2024] [Indexed: 05/22/2024]
Abstract
KEY MESSAGE Thchit42 constitutive expression for fungal resistance showed synchronisation with leaf augmentation and transcriptome analysis revealed the Longifolia and Zinc finger RICESLEEPER gene is responsible for plant growth and development. Pelargonium graveolens essential oil possesses significant attributes, known for perfumery and aromatherapy. However, optimal yield and propagation are predominantly hindered by biotic stress. All biotechnological approaches have yet to prove effective in addressing fungal resistance. The current study developed transgenic geranium bridging molecular mechanism of fungal resistance and plant growth by introducing cassette 35S::Thchit42. Furthermore, 120 independently putative transformed explants were regenerated on kanamycin fortified medium. Primarily transgenic lines were demonstrated peak pathogenicity and antifungal activity against formidable Colletotrichum gloeosporioides and Fusarium oxysporum. Additionally, phenotypic analysis revealed ~ 2fold increase in leaf size and ~ 2.1fold enhanced oil content. To elucidate the molecular mechanisms for genotypic cause, de novo transcriptional profiles were analyzed to indicate that the auxin-regulated longifolia gene is accountable for augmentation in leaf size, and zinc finger (ZF) RICESLEEPER attributes growth upregulation. Collectively, data provides valuable insights into unravelling the mechanism of Thchit42-mediated crosstalk between morphological and chemical alteration in transgenic plants. This knowledge might create novel opportunities to cultivate fungal-resistant geranium throughout all seasons to fulfil demand.
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Affiliation(s)
- Kahkashan Khatoon
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Zafar Iqbal Warsi
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Akanksha Singh
- Division of Crop Production and Protection, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Kajal Singh
- Division of Crop Production and Protection, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Feroz Khan
- Technology Dissemination and Computational Biology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Palak Singh
- Technology Dissemination and Computational Biology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Rakesh Kumar Shukla
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Ram Swaroop Verma
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Munmun K Singh
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Sanjeet K Verma
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Zakir Husain
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Gazala Parween
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Pooja Singh
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Shama Afroz
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Laiq Ur Rahman
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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3
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Woo SL, Hermosa R, Lorito M, Monte E. Trichoderma: a multipurpose, plant-beneficial microorganism for eco-sustainable agriculture. Nat Rev Microbiol 2023; 21:312-326. [PMID: 36414835 DOI: 10.1038/s41579-022-00819-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2022] [Indexed: 11/24/2022]
Abstract
Trichoderma is a cosmopolitan and opportunistic ascomycete fungal genus including species that are of interest to agriculture as direct biological control agents of phytopathogens. Trichoderma utilizes direct antagonism and competition, particularly in the rhizosphere, where it modulates the composition of and interactions with other microorganisms. In its colonization of plants, on the roots or as an endophyte, Trichoderma has evolved the capacity to communicate with the plant and produce numerous multifaceted benefits to its host. The intricacy of this plant-microorganism association has stimulated a marked interest in research on Trichoderma, ranging from its capacity as a plant growth promoter to its ability to prime local and systemic defence responses against biotic and abiotic stresses and to activate transcriptional memory affecting plant responses to future stresses. This Review discusses the ecophysiology and diversity of Trichoderma and the complexity of its relationships in the agroecosystem, highlighting its potential as a direct and indirect biological control agent, biostimulant and biofertilizer, which are useful multipurpose properties for agricultural applications. We also highlight how the present legislative framework might accommodate the demonstrated evidence of Trichoderma proficiency as a plant-beneficial microorganism contributing towards eco-sustainable agriculture.
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Affiliation(s)
- Sheridan L Woo
- Department of Pharmacy, University of Naples Federico II, Naples, Italy.
| | - Rosa Hermosa
- Department of Microbiology and Genetics, Institute for Agribiotechnology Research (CIALE), University of Salamanca, Salamanca, Spain
| | - Matteo Lorito
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Enrique Monte
- Department of Microbiology and Genetics, Institute for Agribiotechnology Research (CIALE), University of Salamanca, Salamanca, Spain
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4
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Xiao Z, Zhao Q, Li W, Gao L, Liu G. Strain improvement of Trichoderma harzianum for enhanced biocontrol capacity: Strategies and prospects. Front Microbiol 2023; 14:1146210. [PMID: 37125207 PMCID: PMC10134904 DOI: 10.3389/fmicb.2023.1146210] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/20/2023] [Indexed: 05/02/2023] Open
Abstract
In the control of plant diseases, biocontrol has the advantages of being efficient and safe for human health and the environment. The filamentous fungus Trichoderma harzianum and its closely related species can inhibit the growth of many phytopathogenic fungi, and have been developed as commercial biocontrol agents for decades. In this review, we summarize studies on T. harzianum species complex from the perspective of strain improvement. To elevate the biocontrol ability, the production of extracellular proteins and compounds with antimicrobial or plant immunity-eliciting activities need to be enhanced. In addition, resistance to various environmental stressors should be strengthened. Engineering the gene regulatory system has the potential to modulate a variety of biological processes related to biocontrol. With the rapidly developing technologies for fungal genetic engineering, T. harzianum strains with increased biocontrol activities are expected to be constructed to promote the sustainable development of agriculture.
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Affiliation(s)
- Ziyang Xiao
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Qinqin Zhao
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Wei Li
- Shanghai Tobacco Group Beijing Cigarette Factory Co., Ltd., Beijing, China
| | - Liwei Gao
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Guodong Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
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5
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Birnbaum C, Wood J, Lilleskov E, Lamit LJ, Shannon J, Brewer M, Grover S. Degradation Reduces Microbial Richness and Alters Microbial Functions in an Australian Peatland. MICROBIAL ECOLOGY 2023; 85:875-891. [PMID: 35867139 PMCID: PMC10156627 DOI: 10.1007/s00248-022-02071-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 07/01/2022] [Indexed: 05/04/2023]
Abstract
Peatland ecosystems cover only 3% of the world's land area; however, they store one-third of the global soil carbon (C). Microbial communities are the main drivers of C decomposition in peatlands, yet we have limited knowledge of their structure and function. While the microbial communities in the Northern Hemisphere peatlands are well documented, we have limited understanding of microbial community composition and function in the Southern Hemisphere peatlands, especially in Australia. We investigated the vertical stratification of prokaryote and fungal communities from Wellington Plains peatland in the Australian Alps. Within the peatland complex, bog peat was sampled from the intact peatland and dried peat from the degraded peatland along a vertical soil depth gradient (i.e., acrotelm, mesotelm, and catotelm). We analyzed the prokaryote and fungal community structure, predicted functional profiles of prokaryotes using PICRUSt, and assigned soil fungal guilds using FUNGuild. We found that the structure and function of prokaryotes were vertically stratified in the intact bog. Soil carbon, manganese, nitrogen, lead, and sodium content best explained the prokaryote composition. Prokaryote richness was significantly higher in the intact bog acrotelm compared to degraded bog acrotelm. Fungal composition remained similar across the soil depth gradient; however, there was a considerable increase in saprotroph abundance and decrease in endophyte abundance along the vertical soil depth gradient. The abundance of saprotrophs and plant pathogens was two-fold higher in the degraded bog acrotelm. Soil manganese and nitrogen content, electrical conductivity, and water table level (cm) best explained the fungal composition. Our results demonstrate that both fungal and prokaryote communities are shaped by soil abiotic factors and that peatland degradation reduces microbial richness and alters microbial functions. Thus, current and future changes to the environmental conditions in these peatlands may lead to altered microbial community structures and associated functions which may have implications for broader ecosystem function changes in peatlands.
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Affiliation(s)
- Christina Birnbaum
- Applied Chemistry and Environmental Science, School of Science, RMIT University Melbourne, Victoria, 3001, Australia.
- School of Life and Environmental Sciences, Faculty of Science & Built Environment, Deakin University, 221 Burwood Highway, Burwood, VIC, 3125, Australia.
- School of Agriculture and Environmental Science, The University of Southern Queensland, Toowoomba, QLD, 4350, Australia.
| | - Jennifer Wood
- Physiology, Anatomy and Microbiology, La Trobe University, Science Drive, Bundoora, VIC, 3086, Australia
| | - Erik Lilleskov
- USDA Forest Service, Northern Research Station, 410 MacInnes Dr, Houghton, MI, 49931, USA
| | - Louis James Lamit
- Department of Biology, Syracuse University, 107 College Place, Syracuse, NY, 13244, USA
- Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY, 13210, USA
| | - James Shannon
- Research Centre for Applied Alpine Ecology, Department of Ecology, Environment and Evolution, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Matthew Brewer
- Physiology, Anatomy and Microbiology, La Trobe University, Science Drive, Bundoora, VIC, 3086, Australia
| | - Samantha Grover
- Applied Chemistry and Environmental Science, School of Science, RMIT University Melbourne, Victoria, 3001, Australia
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6
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Wang Y, Zhu X, Wang J, Shen C, Wang W. Identification of Mycoparasitism-Related Genes against the Phytopathogen Botrytis cinerea via Transcriptome Analysis of Trichoderma harzianum T4. J Fungi (Basel) 2023; 9:jof9030324. [PMID: 36983492 PMCID: PMC10055783 DOI: 10.3390/jof9030324] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/15/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Trichoderma harzianum is a well-known biological control agent (BCA) that is effective against a variety of plant pathogens. In previous studies, we found that T. harzianum T4 could effectively control the gray mold in tomatoes caused by Botrytis cinerea. However, the research on its biocontrol mechanism is not comprehensive, particularly regarding the mechanism of mycoparasitism. In this study, in order to further investigate the mycoparasitism mechanism of T. harzianum T4, transcriptomic sequencing and real-time fluorescence quantitative PCR (RT-qPCR) were used to identify the differentially expressed genes (DEGs) of T. harzianum T4 at 12, 24, 48 and 72 h of growth in the cell wall of B. cinerea (BCCW) or a sucrose medium. A total of 2871 DEGs and 2148 novel genes were detected using transcriptome sequencing. Through GO and KEGG enrichment analysis, we identified genes associated with mycoparasitism at specific time periods, such as encoding kinases, signal transduction proteins, carbohydrate active enzymes, hydrolytic enzymes, transporters, antioxidant enzymes, secondary metabolite synthesis, resistance proteins, detoxification genes and genes associated with extended hyphal longevity. To validate the transcriptome data, RT-qCPR was performed on the transcriptome samples. The RT-qPCR results show that the expression trend of the genes was consistent with the RNA-Seq data. In order to validate the screened genes associated with mycoparasitism, we performed a dual-culture antagonism test on T. harzianum and B. cinerea. The results of the dual-culture RT-qPCR showed that 15 of the 24 genes were upregulated during and after contact between T. harzianum T4 and B. cinerea (the same as BCCW), which further confirmed that these genes were involved in the mycoparasitism of T. harzianum T4. In conclusion, the transcriptome data provided in this study will not only improve the annotation information of gene models in T. harzianum T4 genome, but also provide important transcriptome information regarding the process of mycoparasitism at specific time periods, which can help us to further understand the mechanism of mycoparasitism, thus providing a potential molecular target for T. harzianum T4 as a biological control agent.
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Affiliation(s)
- Yaping Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaochong Zhu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jian Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chao Shen
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
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7
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Pathania S, Lore JS, Kalia A, Kaur A, Sharma M, Mangat GS, Sandhu JS. Conversion of sheath blight susceptible indica and japonica rice cultivars into moderately resistant through expression of antifungal β-1,3-glucanase transgene from Trichoderma spp. Transgenic Res 2022; 31:537-551. [PMID: 35943623 DOI: 10.1007/s11248-022-00318-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 07/28/2022] [Indexed: 12/01/2022]
Abstract
Rice is an important food crop for three billion people worldwide. The crop is vulnerable to several diseases. Sheath blight caused by fungal pathogen Rhizoctonia solani is a significant threat to rice cultivation accounting for up to 50% yield losses. The pathogen penetrates leaf blades and sheaths, leading to plant necrosis; and major disease resistance gene against the pathogen is not available. This study describes development of sheath blight resistant transgenic indica and japonica rice cultivars through introduction of antifungal β-1,3-glucanase transgene cloned from Trichoderma. The transgene integration and expression in transformed T0 rice plants was examined by PCR, RT-PCR, qRT-PCR demonstrating up to 5-fold higher expression as compared to non-transgenic plants. The bioassay of T0, T1 and homozygous T2 progeny plants with virulent R. solani isolate revealed that plants carrying high level of β-1,3-glucanase expression displayed moderately resistant reaction to the pathogen. The optical micrographs of leaf sheath cells from moderately resistant plant after pathogen inoculation displayed presence of a few hyphae with sparse branching; on the contrary, pathogen hyphae in susceptible non-transgenic plant cells were present in abundance with profuse hyphal branching and forming prominent infection cushions. The disease severity in T2 progeny plants was significantly less as compared to non-transgenic plants confirming role of β-1,3-glucanase in imparting resistance.
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Affiliation(s)
- Shivali Pathania
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Jagjeet Singh Lore
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Punjab Agricultural University, Ludhiana, India
| | - Ajinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Manveer Sharma
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Gurjit Singh Mangat
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Jagdeep Singh Sandhu
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India.
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8
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Monitoring Mycoparasitism of Clonostachys rosea against Botrytis cinerea Using GFP. J Fungi (Basel) 2022; 8:jof8060567. [PMID: 35736050 PMCID: PMC9225460 DOI: 10.3390/jof8060567] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 02/05/2023] Open
Abstract
Clonostachys rosea is an important mycoparasite, with great potential for controlling numerous plant fungal diseases. Understanding the mechanisms and modes of action will assist the development and application of this biocontrol fungus. In this study, the highly efficient C. rosea 67-1 strain was marked with the green fluorescent protein (GFP), and the transformant possessed the same biological characteristics as the wild-type strain. Fungal interactions with Botrytis cinerea during co-culture and encounter on tomato leaves were assessed by fluorescence confocal and electron microscopy. The results indicated that once the two fungi met, the hyphae of C. rosea grew alongside those of B. cinerea, then attached tightly to the host and developed special structures, via which the biocontrol fungus penetrated the host and absorbed nutrients, eventually disintegrating the cells of the pathogen. Mycoparasitism to B. cinerea was also observed on tomato leaves, suggesting that C. rosea can colonize on plants and act following the invasion of the pathogenic fungus.
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9
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Abbas A, Mubeen M, Zheng H, Sohail MA, Shakeel Q, Solanki MK, Iftikhar Y, Sharma S, Kashyap BK, Hussain S, del Carmen Zuñiga Romano M, Moya-Elizondo EA, Zhou L. Trichoderma spp. Genes Involved in the Biocontrol Activity Against Rhizoctonia solani. Front Microbiol 2022; 13:884469. [PMID: 35694310 PMCID: PMC9174946 DOI: 10.3389/fmicb.2022.884469] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/27/2022] [Indexed: 11/15/2022] Open
Abstract
Rhizoctonia solani is a pathogen that causes considerable harm to plants worldwide. In the absence of hosts, R. solani survives in the soil by forming sclerotia, and management methods, such as cultivar breeding, crop rotations, and fungicide sprays, are insufficient and/or inefficient in controlling R. solani. One of the most challenging problems facing agriculture in the twenty-first century besides with the impact of global warming. Environmentally friendly techniques of crop production and improved agricultural practices are essential for long-term food security. Trichoderma spp. could serve as an excellent example of a model fungus to enhance crop productivity in a sustainable way. Among biocontrol mechanisms, mycoparasitism, competition, and antibiosis are the fundamental mechanisms by which Trichoderma spp. defend against R. solani, thereby preventing or obstructing its proliferation. Additionally, Trichoderma spp. induce a mixed induced systemic resistance (ISR) or systemic acquired resistance (SAR) in plants against R. solani, known as Trichoderma-ISR. Stimulation of every biocontrol mechanism involves Trichoderma spp. genes responsible for encoding secondary metabolites, siderophores, signaling molecules, enzymes for cell wall degradation, and plant growth regulators. Rhizoctonia solani biological control through genes of Trichoderma spp. is summarized in this paper. It also gives information on the Trichoderma-ISR in plants against R. solani. Nonetheless, fast-paced current research on Trichoderma spp. is required to properly utilize their true potential against diseases caused by R. solani.
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Affiliation(s)
- Aqleem Abbas
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mustansar Mubeen
- Department of Plant Pathology, College of Agriculture, University of Sargodha, Sargodha, Pakistan
| | - Hongxia Zheng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Muhammad Aamir Sohail
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qaiser Shakeel
- Department of Plant Pathology, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Manoj Kumar Solanki
- Plant Cytogenetics and Molecular Biology Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Yasir Iftikhar
- Department of Plant Pathology, College of Agriculture, University of Sargodha, Sargodha, Pakistan
- *Correspondence: Yasir Iftikhar,
| | - Sagar Sharma
- Plant Cytogenetics and Molecular Biology Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Brijendra Kumar Kashyap
- Department of Biotechnology Engineering, Institute of Engineering and Technology, Bundelkhand University, Jhansi, India
| | - Sarfaraz Hussain
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | | | | | - Lei Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Lei Zhou,
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10
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Akram F, Jabbar Z, Aqeel A, Haq IU, Tariq S, Malik K. A Contemporary Appraisal on Impending Industrial and Agricultural Applications of Thermophilic-Recombinant Chitinolytic Enzymes from Microbial Sources. Mol Biotechnol 2022; 64:1055-1075. [PMID: 35397055 DOI: 10.1007/s12033-022-00486-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 03/25/2022] [Indexed: 01/09/2023]
Abstract
The ability of chitinases to degrade the second most abundant polymer, chitin, into potentially useful chitooligomers and chitin derivatives has not only rendered them fit for chitinous waste management but has also made them important from industrial point of view. At the same time, they have also been recognized to have an imperative role as promising biocontrol agents for controlling plant diseases. As thermostability is an important property for an industrially important enzyme, various bacterial and fungal sources are being exploited to obtain such stable enzymes. These stable enzymes can also play a role in agriculture by maintaining their stability under adverse environmental conditions for longer time duration when used as biocontrol agent. Biotechnology has also played its role in the development of recombinant chitinases with enhanced activity, thermostability, fungicidal and insecticidal activity via recombinant DNA techniques. Furthermore, a relatively new approach of generating pathogen-resistant transgenic plants has opened new ways for sustainable agriculture by minimizing the yield loss of valuable crops and plants. This review focuses on the potential applications of thermostable and recombinant microbial chitinases in industry and agriculture.
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Affiliation(s)
- Fatima Akram
- Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan.
| | - Zuriat Jabbar
- Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan
| | - Amna Aqeel
- Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan
| | - Ikram Ul Haq
- Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan.,Pakistan Academy of Sciences, Islamabad, Pakistan
| | - Shahbaz Tariq
- Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan
| | - Kausar Malik
- Centre for Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
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Asad SA. Mechanisms of action and biocontrol potential of Trichoderma against fungal plant diseases - A review. ECOLOGICAL COMPLEXITY 2022. [DOI: 10.1016/j.ecocom.2021.100978] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Vicente TFL, Lemos MFL, Félix R, Valentão P, Félix C. Marine Macroalgae, a Source of Natural Inhibitors of Fungal Phytopathogens. J Fungi (Basel) 2021; 7:1006. [PMID: 34946989 PMCID: PMC8708330 DOI: 10.3390/jof7121006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 01/30/2023] Open
Abstract
Fungal phytopathogens are a growing problem all over the world; their propagation causes significant crop losses, affecting the quality of fruits and vegetables, diminishing the availability of food, leading to the loss of billions of euros every year. To control fungal diseases, the use of synthetic chemical fungicides is widely applied; these substances are, however, environmentally damaging. Marine algae, one of the richest marine sources of compounds possessing a wide range of bioactivities, present an eco-friendly alternative in the search for diverse compounds with industrial applications. The synthesis of such bioactive compounds has been recognized as part of microalgal responsiveness to stress conditions, resulting in the production of polyphenols, polysaccharides, lipophilic compounds, and terpenoids, including halogenated compounds, already described as antimicrobial agents. Furthermore, many studies, in vitro or in planta, have demonstrated the inhibitory activity of these compounds with respect to fungal phytopathogens. This review aims to gather the maximum of information addressing macroalgae extracts with potential inhibition against fungal phytopathogens, including the best inhibitory results, while presenting some already reported mechanisms of action.
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Affiliation(s)
- Tânia F. L. Vicente
- MARE—Marine and Environmental Sciences Centre, ESTM, Politécnico de Leiria, 2520-641 Peniche, Portugal;
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal;
| | - Marco F. L. Lemos
- MARE—Marine and Environmental Sciences Centre, ESTM, Politécnico de Leiria, 2520-641 Peniche, Portugal;
| | - Rafael Félix
- MARE—Marine and Environmental Sciences Centre, ESTM, Politécnico de Leiria, 2520-641 Peniche, Portugal;
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal;
| | - Patrícia Valentão
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal;
| | - Carina Félix
- MARE—Marine and Environmental Sciences Centre, ESTM, Politécnico de Leiria, 2520-641 Peniche, Portugal;
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Barrera VA, Iannone L, Romero AI, Chaverri P. Expanding the Trichoderma harzianum species complex: Three new species from Argentine natural and cultivated ecosystems. Mycologia 2021; 113:1136-1155. [PMID: 34473608 DOI: 10.1080/00275514.2021.1947641] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A study was performed on a collection of 84 isolates from decaying plant tissues and soils in Argentina previously identified as Trichoderma harzianum. Based on multiple phenotypic characters and multilocus phylogenetic analyses, 10 species were distinguished, three of which are described as new species: T. austroindianum, T. hortense, and T. syagri. Among the remaining seven identified species, the following five can be added to the Argentine mycobiota: T. afarasin, T. afroharzianum, T. endophyticum, T. guizhouense, and T. neotropicale. Trichoderma afroharzianum and T. endophyticum were the most frequent species found in the samples. In addition, a collection of isolates previously identified as T. harzianum with antagonistic abilities were reidentified as T. afroharzianum, thus highlighting the importance of correct identification of biocontrol species.
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Affiliation(s)
- Viviana A Barrera
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola, N. Repetto y De los Reseros, CC25 (1712), Castelar, Buenos Aires, Argentina
| | - Leopoldo Iannone
- Instituto de Micología y Botánica-Consejo Nacional de Investigaciones Científicas y Técnicas (INMIBO-CONICET), Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Av. Int. Güiraldes 2620, Buenos Aires C1428EHA, Argentina
| | - Andrea Irene Romero
- Instituto de Micología y Botánica-Consejo Nacional de Investigaciones Científicas y Técnicas (INMIBO-CONICET), Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Av. Int. Güiraldes 2620, Buenos Aires C1428EHA, Argentina
| | - Priscila Chaverri
- Escuela de Biología and Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Pedro, San José, Costa Rica.,Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20742
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15
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Wu B, Cox MP. Comparative genomics reveals a core gene toolbox for lifestyle transitions in Hypocreales fungi. Environ Microbiol 2021; 23:3251-3264. [PMID: 33939870 PMCID: PMC8360070 DOI: 10.1111/1462-2920.15554] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 12/13/2022]
Abstract
Fungi have evolved diverse lifestyles and adopted pivotal new roles in both natural ecosystems and human environments. However, the molecular mechanisms underlying their adaptation to new lifestyles are obscure. Here, we hypothesize that genes shared across all species with the same lifestyle, but absent in genera with alternative lifestyles, are crucial to that lifestyle. By analysing dozens of species within four genera in a fungal order, with each genus following a different lifestyle, we find that genus-specific genes are typically few in number. Notably, not all genus-specific genes appear to derive from de novo birth, with most instead reflecting recurrent loss across the fungi. Importantly, however, a subset of these genus-specific genes are shared by fungi with the same lifestyle in quite different evolutionary orders, thus supporting the view that some genus-specific genes are necessary for specific lifestyles. These lifestyle-specific genes are enriched for key functional classes and often exhibit specialized expression patterns. Genus-specific selection also contributes to lifestyle transitions, and is especially associated with intensity of pathogenesis. Our study, therefore, suggests that fungal adaptation to new lifestyles often requires just a small number of core genes, with gene turnover and positive selection playing complementary roles.
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Affiliation(s)
- Baojun Wu
- Statistics and Bioinformatics Group, School of Fundamental SciencesMassey UniversityPalmerston North4410New Zealand
- Bio‐Protection Research CentreMassey UniversityPalmerston North4410New Zealand
| | - Murray P. Cox
- Statistics and Bioinformatics Group, School of Fundamental SciencesMassey UniversityPalmerston North4410New Zealand
- Bio‐Protection Research CentreMassey UniversityPalmerston North4410New Zealand
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Abstract
Root rot diseases remain a major global threat to the productivity of agricultural crops. They are usually caused by more than one type of pathogen and are thus often referred to as a root rot complex. Fungal and oomycete species are the predominant participants in the complex, while bacteria and viruses are also known to cause root rot. Incorporating genetic resistance in cultivated crops is considered the most efficient and sustainable solution to counter root rot, however, resistance is often quantitative in nature. Several genetics studies in various crops have identified the quantitative trait loci associated with resistance. With access to whole genome sequences, the identity of the genes within the reported loci is becoming available. Several of the identified genes have been implicated in pathogen responses. However, it is becoming apparent that at the molecular level, each pathogen engages a unique set of proteins to either infest the host successfully or be defeated or contained in attempting so. In this review, a comprehensive summary of the genes and the potential mechanisms underlying resistance or susceptibility against the most investigated root rots of important agricultural crops is presented.
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Khalid A, Ye M, Wei C, Dai B, Yang R, Huang S, Wang Z. Production of β-glucanase and protease from Bacillus velezensis strain isolated from the manure of piglets. Prep Biochem Biotechnol 2020; 51:497-510. [PMID: 33108947 DOI: 10.1080/10826068.2020.1833344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
In this study, a strain producing β-glucanase and protease, identified as Bacillus velezensis Y1, was isolated from the manure of piglet. We attempted to produce β-glucanase and protease after optimization of various process parameters with the submerged fermentation. The effects of each factor on producing β-glucanase and protease were as follows: temperature > time > pH > loaded liquid volume. The properties of the β-glucanase showed that the most suitable reaction temperature was 65 °C and pH was 6.0. However for protease optimum reaction temperature was 50 °C, and pH was 6.0. The amplified PCR fragments of β-glucanase and protease were 1434 bp containing an open reading frame of 1413 bp encoding a protein with 444 amino acids and 1752 bp containing an open reading frame of 1521 bp encoding a protein with 506 amino acids, respectively. So, the study demonstrated a viable approach of using newly identified B. velezensis Y1 strain for the maximum yield of two industrially important enzymes.
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Affiliation(s)
- Anam Khalid
- College of Life Science, Anhui Agricultural University, Hefei, China
| | - Miao Ye
- College of Life Science, Anhui Agricultural University, Hefei, China
| | - Chunjie Wei
- College of Life Science, Anhui Agricultural University, Hefei, China
| | - Binghong Dai
- College of Life Science, Anhui Agricultural University, Hefei, China
| | - Ru Yang
- College of Life Science, Anhui Agricultural University, Hefei, China
| | - Shoujun Huang
- College of Life Science, Anhui Agricultural University, Hefei, China
| | - Zaigui Wang
- College of Life Science, Anhui Agricultural University, Hefei, China
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Understanding Phytomicrobiome: A Potential Reservoir for Better Crop Management. SUSTAINABILITY 2020. [DOI: 10.3390/su12135446] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent crop production studies have aimed at an increase in the biotic and abiotic tolerance of plant communities, along with increased nutrient availability and crop yields. This can be achieved in various ways, but one of the emerging approaches is to understand the phytomicrobiome structure and associated chemical communications. The phytomicrobiome was characterized with the advent of high-throughput techniques. Its composition and chemical signaling phenomena have been revealed, leading the way for “rhizosphere engineering”. In addition to the above, phytomicrobiome studies have paved the way to best tackling soil contamination with various anthropogenic activities. Agricultural lands have been found to be unbalanced for crop production. Due to the intense application of agricultural chemicals such as herbicides, fungicides, insecticides, fertilizers, etc., which can only be rejuvenated efficiently through detailed studies on the phytomicrobiome component, the phytomicrobiome has recently emerged as a primary plant trait that affects crop production. The phytomicrobiome also acts as an essential modifying factor in plant root exudation and vice versa, resulting in better plant health and crop yield both in terms of quantity and quality. Not only supporting better plant growth, phytomicrobiome members are involved in the degradation of toxic materials, alleviating the stress conditions that adversely affect plant development. Thus, the present review compiles the progress in understanding phytomicrobiome relationships and their application in achieving the goal of sustainable agriculture.
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Muccilli V, Vitale A, Sheng L, Gentile A, Cardullo N, Tringali C, Oliveri C, La Rosa R, Di Guardo M, La Malfa S, Deng Z, Distefano G. Substantial Equivalence of a Transgenic Lemon Fruit Showing Postharvest Fungal Pathogens Resistance. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:3806-3816. [PMID: 32096635 DOI: 10.1021/acs.jafc.9b07925] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The development of genetically modified (GM) crops speeds up the obtainment of novel varieties with improved agronomic characteristics. However, the risk evaluation of the use of GMs is mandatory before their release in the market. In this paper, an untargeted and comprehensive nuclear magnetic resonance-based metabolomic study was carried out on the peel and flesh of a transgenic lemon clone (E23) expressing the chit42 gene and exhibiting an increased tolerance to some pathogenic fungi and on its wild type. Results highlighted a substantial equivalence of the metabolomics profile of the transgenic clone compared to the wild type. In addition, an enhanced response of the E23 clone toward fungal pathogens affecting the postharvest management in lemon was evidenced. These results confirm the potential of genetic engineering for the punctual modification of specific agronomic traits without altering the whole pattern of metabolites and open new perspectives for a more sustainable and effective management of specific postharvest diseases in citrus.
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Affiliation(s)
- Vera Muccilli
- Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | - Alessandro Vitale
- Department of Agriculture, Food and Environment, University of Catania, 95123 Catania, Italy
| | - Ling Sheng
- College of Horticulture and Landscape, Hunan Agricultural University, 410128 Changsha, China
| | - Alessandra Gentile
- Department of Agriculture, Food and Environment, University of Catania, 95123 Catania, Italy
- College of Horticulture and Landscape, Hunan Agricultural University, 410128 Changsha, China
| | - Nunzio Cardullo
- Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | - Corrado Tringali
- Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | - Cinzia Oliveri
- Department of Agriculture, Food and Environment, University of Catania, 95123 Catania, Italy
| | - Rosa La Rosa
- Department of Agriculture, Food and Environment, University of Catania, 95123 Catania, Italy
| | - Mario Di Guardo
- Department of Agriculture, Food and Environment, University of Catania, 95123 Catania, Italy
| | - Stefano La Malfa
- Department of Agriculture, Food and Environment, University of Catania, 95123 Catania, Italy
| | - Ziniu Deng
- College of Horticulture and Landscape, Hunan Agricultural University, 410128 Changsha, China
| | - Gaetano Distefano
- Department of Agriculture, Food and Environment, University of Catania, 95123 Catania, Italy
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Durechova D, Jopcik M, Rajninec M, Moravcikova J, Libantova J. Expression of Drosera rotundifolia Chitinase in Transgenic Tobacco Plants Enhanced Their Antifungal Potential. Mol Biotechnol 2019; 61:916-928. [PMID: 31555964 DOI: 10.1007/s12033-019-00214-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, a chitinase gene (DrChit) that plays a role in the carnivorous processes of Drosera rotundifolia L. was isolated from genomic DNA, linked to a double CaMV35S promoter and nos terminator in a pBinPlus plant binary vector, and used for Agrobacterium-mediated transformation of tobacco. RT-qPCR revealed that within 14 transgenic lines analysed in detail, 57% had DrChit transcript abundance comparable to or lower than level of a reference actin gene transcript. In contrast, the transgenic lines 9 and 14 exhibited 72 and 152 times higher expression level than actin. The protein extracts of these two lines exhibited five and eight times higher chitinolytic activity than non-transgenic controls when measured in a fluorimetric assay with FITC-chitin. Finally, the growth of Trichoderma viride was obviously suppressed when the pathogen was exposed to 100 μg of crude protein extract isolated from line 9 and line 14, with the area of mycelium growth reaching only 56.4% and 45.2%, of non-transgenic control, respectively. This is the first time a chitinase from a carnivorous plant with substrate specificity for long chitin polymers was tested in a transgenic plant with the aim of exploring its antifungal potential.
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Affiliation(s)
- Dominika Durechova
- Institute of Plant Genetics and Biotechnology, Plant Science Biodiversity Center, Slovak Academy of Sciences, Akademicka 2, P. O. Box 39A, 950 07, Nitra, Slovak Republic
| | - Martin Jopcik
- Institute of Plant Genetics and Biotechnology, Plant Science Biodiversity Center, Slovak Academy of Sciences, Akademicka 2, P. O. Box 39A, 950 07, Nitra, Slovak Republic
| | - Miroslav Rajninec
- Institute of Plant Genetics and Biotechnology, Plant Science Biodiversity Center, Slovak Academy of Sciences, Akademicka 2, P. O. Box 39A, 950 07, Nitra, Slovak Republic
| | - Jana Moravcikova
- Institute of Plant Genetics and Biotechnology, Plant Science Biodiversity Center, Slovak Academy of Sciences, Akademicka 2, P. O. Box 39A, 950 07, Nitra, Slovak Republic
| | - Jana Libantova
- Institute of Plant Genetics and Biotechnology, Plant Science Biodiversity Center, Slovak Academy of Sciences, Akademicka 2, P. O. Box 39A, 950 07, Nitra, Slovak Republic.
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Praveen A, Mehrotra S, Singh N. Mixed plantation of wheat and accumulators in arsenic contaminated plots: A novel way to reduce the uptake of arsenic in wheat and load on antioxidative defence of plant. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 182:109462. [PMID: 31351329 DOI: 10.1016/j.ecoenv.2019.109462] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 05/17/2019] [Accepted: 07/21/2019] [Indexed: 05/27/2023]
Abstract
Wheat (W) and accumulators (A) were planted in plots (arsenic amended soil and without arsenic) designed with ecotoxicological concern for arsenic safe-grains. For the study sixteen plots of 2 × 2 × 0.5 m (l × b × h) size were prepared. Arsenic (As) in the form of sodium arsenate was applied at 50 mg/kg in plots. Out of these sixteen plots eight plots had arsenic amended soil and rest 8 without any arsenic (C). Accumulator's viz. Pteris vittata (PV), Phragmites australis (PA) and Vetiveria zizanioides (VZ) were planted along with wheat in combination (W + PV, W + PA and W + VZ) in twelve plots (6 AWAs plots and 6 AWC plots). In the rest 4 plots (2 WAs plots and 2 WC plots), only wheat was planted. The study was conducted for two cropping seasons, where accumulators were left in the plots between the cropping seasons except that before 2nd cropping accumulators were properly pruned and extra tillers were removed. The germination % of wheat in WAs in 1st and the 2nd cropping season was found to be 55 and 57%, while in AWAs and AWC plots it was between 86 and 92% (W + VZ, 56 and 73%). The physiological activity was found to be reduced in WAs plots compared to AWAs (except for vetiver combination) and AWC plots in both cropping seasons. The antioxidant activity was enhanced in WAs compared with AWAs. The arsenic concentration in grains of wheat was within the permissible limit set by WHO and GOI in AWAs plots while it exceeded the limit in W + VZ (in 1st cropping) and WAs in both cropings.
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Affiliation(s)
- Ashish Praveen
- Plant Ecology and Environmental Science Division, National Botanical Research Institute, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
| | - Sonali Mehrotra
- Plant Ecology and Environmental Science Division, National Botanical Research Institute, Lucknow, 226001, Uttar Pradesh, India; Department of Botany, Dolphin (PG) Institute, Manduwala, Uttarakhand Technical University, Dehradun, Uttarakhand, India.
| | - Nandita Singh
- Plant Ecology and Environmental Science Division, National Botanical Research Institute, Lucknow, 226001, Uttar Pradesh, India.
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Anwar W, Javed MA, Shahid AA, Nawaz K, Akhter A, Ur Rehman MZ, Hameed U, Iftikhar S, Haider MS. Chitinase genes from Metarhizium anisopliae for the control of whitefly in cotton. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190412. [PMID: 31598241 PMCID: PMC6731705 DOI: 10.1098/rsos.190412] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 08/01/2019] [Indexed: 06/01/2023]
Abstract
Entomopathogenic fungi produces endochitianses, involved in the degradation of insect chitin to facilitate the infection process. Endochitinases (Chit1) gene of family 18 glycosyl hydrolyses were amplified, cloned and characterized from genomic DNA of two isolates of Metarhizium anisopliae. Catalytic motif of family 18 glycosyl hydrolyses was found in Chit1 of M. anisopliae, while no signal peptide was found in any isolate, whereas substrate-binding motif was found in Chit1 of both isolates. Phylogenetic analysis revealed the evolutionary relationship among the fungal chitinases of Metarhizium. The Chit1 amplified were closely related to the family 18 glycosyl hydrolyses. Transient expressions of Chit1 in cotton plants using Geminivirus-mediated gene silencing vector of Cotton Leaf Crumple Virus (CLCrV) revealed the chitinase activity of Chit1 genes amplified from both of the isolates of M. anisopliae when compared with the control. Transformed cotton plants were virulent against fourth instar nymphal and adult stages of Bemisia tabaci which resulted in the mortality of both fourth instar nymphal and adult B. tabaci. Thus, the fungal chitinases expressed in cotton plants played a vital role in plant defence against B. tabaci. However, further studies are required to explore the comparative effectiveness of chitinases from different fungal strains against economically important insect pests.
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Affiliation(s)
- Waheed Anwar
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Muhammad Asim Javed
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Ahmad Ali Shahid
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Kiran Nawaz
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Adnan Akhter
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | | | - Usman Hameed
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Sehrish Iftikhar
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
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Navarro-González SS, Ramírez-Trujillo JA, Peña-Chora G, Gaytán P, Roldán-Salgado A, Corzo G, Lina-García LP, Hernández-Velázquez VM, Suárez-Rodríguez R. Enhanced Tolerance against a Fungal Pathogen and Insect Resistance in Transgenic Tobacco Plants Overexpressing an Endochitinase Gene from Serratia marcescens. Int J Mol Sci 2019; 20:E3482. [PMID: 31315176 PMCID: PMC6679225 DOI: 10.3390/ijms20143482] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/11/2019] [Accepted: 07/14/2019] [Indexed: 11/16/2022] Open
Abstract
In this study we cloned a chitinase gene (SmchiC), from Serratia marcescens isolated from the corpse of a Diatraea magnifactella lepidopteran, which is an important sugarcane pest. The chitinase gene SmchiC amplified from the S. marcescens genome was cloned into the transformation vector p2X35SChiC and used to transform tobacco (Nicotiana tabacum L. cv Petit Havana SR1). The resistance of these transgenic plants to the necrotrophic fungus Botrytis cinerea and to the pest Spodoptera frugiperda was evaluated: both the activity of chitinase as well as the resistance against B. cinerea and S. frugiperda was significantly higher in transgenic plants compared to the wild-type.
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Affiliation(s)
- Samantha Sarai Navarro-González
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - José Augusto Ramírez-Trujillo
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - Guadalupe Peña-Chora
- Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - Paul Gaytán
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos 62210, Mexico
| | - Abigail Roldán-Salgado
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos 62210, Mexico
| | - Gerardo Corzo
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos 62210, Mexico
| | - Laura Patricia Lina-García
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - Víctor Manuel Hernández-Velázquez
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - Ramón Suárez-Rodríguez
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico.
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Poveda J, Hermosa R, Monte E, Nicolás C. The Trichoderma harzianum Kelch Protein ThKEL1 Plays a Key Role in Root Colonization and the Induction of Systemic Defense in Brassicaceae Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:1478. [PMID: 31803213 PMCID: PMC6873215 DOI: 10.3389/fpls.2019.01478] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 10/24/2019] [Indexed: 05/21/2023]
Abstract
The fungal genus Trichoderma includes strains with biocontrol and/or biostimulant potential and is recognized as a source of genes with biotechnological value. In a previous study the Kelch domain protein, encoded by the Thkel1 gene of Trichoderma harzianum T34, was found to confer tolerance to salt stress when expressed in plants of Arabidopsis thaliana. In the present work, we have overexpressed Thkel1 in rapeseed plants in order to generate an additional biotechnological tool for analyzing the role of this gene in Trichoderma-plant interactions. The overexpression of this gene in Brassicaceae plants improves responses to pathogens through the induction of systemic defenses mediated by jasmonic acid, facilitates root colonization by modulating the myrosinase activity, and, as a result, increases plant productivity. These effects were also observed in Thkel1 overexpressing plants subjected to abiotic stress conditions. Additionally, the differences detected in root colonization levels by T. harzianum wild type and Thkel1 silenced transformants between Arabidopsis or rapeseed and tomato plants indicate that ThKEL1 interacts in different ways in Brassicaceae and non-Brassicaceae plants.
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Affiliation(s)
- Jorge Poveda
- Department of Botany and Plant Physiology, Spanish-Portuguese Institute for Agricultural Research (CIALE), University of Salamanca, Salamanca, Spain
| | - Rosa Hermosa
- Department of Microbiology and Genetics, Spanish-Portuguese Institute for Agricultural Research (CIALE), University of Salamanca, Salamanca, Spain
| | - Enrique Monte
- Department of Microbiology and Genetics, Spanish-Portuguese Institute for Agricultural Research (CIALE), University of Salamanca, Salamanca, Spain
- *Correspondence: Enrique Monte,
| | - Carlos Nicolás
- Department of Botany and Plant Physiology, Spanish-Portuguese Institute for Agricultural Research (CIALE), University of Salamanca, Salamanca, Spain
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Ali M, Luo DX, Khan A, Haq SU, Gai WX, Zhang HX, Cheng GX, Muhammad I, Gong ZH. Classification and Genome-Wide Analysis of Chitin-Binding Proteins Gene Family in Pepper (Capsicum annuum L.) and Transcriptional Regulation to Phytophthora capsici, Abiotic Stresses and Hormonal Applications. Int J Mol Sci 2018; 19:E2216. [PMID: 30060631 PMCID: PMC6121964 DOI: 10.3390/ijms19082216] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/23/2018] [Accepted: 07/26/2018] [Indexed: 11/26/2022] Open
Abstract
Chitin-binding proteins are pathogenesis-related gene family, which play a key role in the defense response of plants. However, thus far, little is known about the chitin-binding family genes in pepper (Capsicum annuum L.). In current study, 16 putative chitin genes (CaChi) were retrieved from the latest pepper genome database, and were classified into four distinct classes (I, III, IV and VI) based on their sequence structure and domain architectures. Furthermore, the structure of gene, genome location, gene duplication and phylogenetic relationship were examined to clarify a comprehensive background of the CaChi genes in pepper. The tissue-specific expression analysis of the CaChi showed the highest transcript levels in seed followed by stem, flower, leaf and root, whereas the lowest transcript levels were noted in red-fruit. Phytophthora capsici post inoculation, most of the CaChi (CaChiI3, CaChiIII1, CaChiIII2, CaChiIII4, CaChiIII6, CaChiIII7, CaChiIV1, CaChiVI1 and CaChiVI2) were induced by both strains (PC and HX-9). Under abiotic and exogenous hormonal treatments, the CaChiIII2, CaChiIII7, CaChiVI1 and CaChiVI2 were upregulated by abiotic stress, while CaChiI1, CaChiIII7, CaChiIV1 and CaChiIV2 responded to hormonal treatments. Furthermore, CaChiIV1-silenced plants display weakened defense by reducing (60%) root activity and increase susceptibility to NaCl stress. Gene ontology (GO) enrichment analysis revealed that CaChi genes primarily contribute in response to biotic, abiotic stresses and metabolic/catabolic process within the biological process category. These results exposed that CaChi genes are involved in defense response and signal transduction, suggesting their vital roles in growth regulation as well as response to stresses in pepper plant. In conclusion, these finding provide basic insights for functional validation of the CaChi genes in different biotic and abiotic stresses.
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Affiliation(s)
- Muhammad Ali
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - De-Xu Luo
- Xuhuai Region Huaiyin Institute of Agricultural Sciences, Huaian 223001, China.
| | - Abid Khan
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Saeed Ul Haq
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Wen-Xian Gai
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Huai-Xia Zhang
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Guo-Xin Cheng
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Izhar Muhammad
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China.
| | - Zhen-Hui Gong
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
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Sharma V, Salwan R, Shanmugam V. Molecular characterization of β-endoglucanase from antagonistic Trichoderma saturnisporum isolate GITX-Panog (C) induced under mycoparasitic conditions. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 149:73-80. [PMID: 30033019 DOI: 10.1016/j.pestbp.2018.06.001] [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: 01/23/2018] [Revised: 03/28/2018] [Accepted: 06/04/2018] [Indexed: 06/08/2023]
Abstract
The endoglucanase belonging to glycoside hydrolase family 61 are little studied. In present study, a β-endoglucanase of ~37 kDa induced on autoclaved mycelium of Fusarium oxysporum was cloned and characterized. The molecular characterization of β-endoglucanase encoding gene revealed presence of a single intron and an open reading frame of 1044-bp which encoded a protein of 347 amino acid residues. The phylogenetic analysis of Eglu revealed its similarity to endo-β-glucanases of other Trichoderma spp. The catalytic site of β-endoglucanase contained Asp, Asn, His and Tyr residues. The cDNA encoding β-glucanase was cloned into E. coli and Pichia pastoris using pQUA-30 and pPIC9K vector system, respectively. The comparison of structure revealed that most similar structure to Eglu is Hypocrea jecorina template 5o2w.1.A of glycoside hydrolase family 61.The biochemical characterization of β-endoglucanase purified from T. saturnisporum isolate and the recombinant protein expressed in E. coli and P. pastoris was active under acidic conditions with a pH optima of 5 and temperature optima of 60 °C. The purified and expressed enzyme preparation was able to inhibit growth of F.oxysporum at 1 × 105 spores/mL which clearly revealed its significance in plant pathogen suppression.
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Affiliation(s)
- Vivek Sharma
- University Centre for Research Development, Chandigarh University Gharuan, 140 413, India.
| | - Richa Salwan
- University Centre for Research Development, Chandigarh University Gharuan, 140 413, India
| | - V Shanmugam
- Division of Plant Pathology, IARI, New Delhi, India
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Narvaez I, Khayreddine T, Pliego C, Cerezo S, Jiménez-Díaz RM, Trapero-Casas JL, López-Herrera C, Arjona-Girona I, Martín C, Mercado JA, Pliego-Alfaro F. Usage of the Heterologous Expression of the Antimicrobial Gene afp From Aspergillus giganteus for Increasing Fungal Resistance in Olive. FRONTIERS IN PLANT SCIENCE 2018; 9:680. [PMID: 29875785 PMCID: PMC5974197 DOI: 10.3389/fpls.2018.00680] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/03/2018] [Indexed: 05/09/2023]
Abstract
The antifungal protein (AFP) produced by Aspergillus giganteus, encoded by the afp gene, has been used to confer resistance against a broad range of fungal pathogens in several crops. In this research, transgenic olive plants expressing the afp gene under the control of the constitutive promoter CaMV35S were generated and their disease response against two root infecting fungal pathogens, Verticillium dahliae and Rosellinia necatrix, was evaluated. Embryogenic cultures derived from a mature zygotic embryo of cv. 'Picual' were used for A. tumefaciens transformation. Five independent transgenic lines were obtained, showing a variable level of afp expression in leaves and roots. None of these transgenic lines showed enhanced resistance to Verticillium wilt. However, some of the lines displayed a degree of incomplete resistance to white root rot caused by R. necatrix compared with disease reaction of non-transformed plants or transgenic plants expressing only the GUS gene. The level of resistance to this pathogen correlated with that of the afp expression in root and leaves. Our results indicate that the afp gene can be useful for enhanced partial resistance to R. necatrix in olive, but this gene does not protect against V. dahliae.
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Affiliation(s)
- Isabel Narvaez
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora", Departamento de Biología Vegetal, Consejo Superior de Investigaciones Científicas, Universidad de Málaga, Málaga, Spain
| | - Titouh Khayreddine
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora", Departamento de Biología Vegetal, Consejo Superior de Investigaciones Científicas, Universidad de Málaga, Málaga, Spain
| | | | - Sergio Cerezo
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora", Departamento de Biología Vegetal, Consejo Superior de Investigaciones Científicas, Universidad de Málaga, Málaga, Spain
| | - Rafael M. Jiménez-Díaz
- Departamento de Agronomía, College of Agriculture and Forestry, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, Edificio C-4 Celestino Mutis, Córdoba, Spain
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Campus de Excelencia Internacional Agroalimentario, Córdoba, Spain
| | - José L. Trapero-Casas
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Campus de Excelencia Internacional Agroalimentario, Córdoba, Spain
| | - Carlos López-Herrera
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Campus de Excelencia Internacional Agroalimentario, Córdoba, Spain
| | - Isabel Arjona-Girona
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Campus de Excelencia Internacional Agroalimentario, Córdoba, Spain
| | - Carmen Martín
- Departamento de Biotecnología-Biología Vegetal, ETS Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Madrid, Spain
| | - José A. Mercado
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora", Departamento de Biología Vegetal, Consejo Superior de Investigaciones Científicas, Universidad de Málaga, Málaga, Spain
| | - Fernando Pliego-Alfaro
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora", Departamento de Biología Vegetal, Consejo Superior de Investigaciones Científicas, Universidad de Málaga, Málaga, Spain
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Microbial and viral chitinases: Attractive biopesticides for integrated pest management. Biotechnol Adv 2018; 36:818-838. [DOI: 10.1016/j.biotechadv.2018.01.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 12/28/2017] [Accepted: 01/02/2018] [Indexed: 02/01/2023]
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Hashem HA, Hassanein RA, Fahmy AH, Ibrahim AS, El Shihyh OM, Qaid EA. Particle bombardment-mediated co-transformation of the Cht-2 gene in wheat and the associated changes in defense mechanisms in transgenic plants infected with Fusarium graminearum. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Shahali Y, Dadar M. Plant food allergy: Influence of chemicals on plant allergens. Food Chem Toxicol 2018; 115:365-374. [PMID: 29580820 DOI: 10.1016/j.fct.2018.03.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 03/14/2018] [Accepted: 03/22/2018] [Indexed: 12/15/2022]
Abstract
Plant-derived foods are the most common allergenic sources in adulthood. Owing to the rapidly increasing prevalence of plant food allergies in industrialized countries, the environmental factors are suspected to play a key role in development of allergic sensitization. The present article provides an overview of ways by which chemicals may influence the development and severity of allergic reactions to plant foods, with especial focus on plant allergens up-regulated under chemical stress. In plants, a substantial part of allergens have defense-related function and their expression is highly influenced by environmental stress and diseases. Pathogenesis-related proteins (PR) account for about 25% of plant food allergens and some are responsible for extensive cross-reactions between plant-derived foods, pollen and latex allergens. Chemicals released by anthropogenic sources such as agriculture, industrial activities and traffic-related air pollutants are potential drivers of the increasing sensitization to allergenic PRs by elevating their expression and by altering their immunogenicity through post-translational modifications. In addition, some orally-taken chemicals may act as immune adjuvants or directly trigger non-IgE mediated food allergy. Taken together, the current literature provides an overwhelming body of evidence supporting the fact that plant chemical exposure and chemicals in diet may enhance the allergenic properties of certain plant-derived foods.
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Affiliation(s)
- Youcef Shahali
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
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Transformation of the endochitinase gene Chi67-1 in Clonostachys rosea 67-1 increases its biocontrol activity against Sclerotinia sclerotiorum. AMB Express 2017; 7:1. [PMID: 28050842 PMCID: PMC5209325 DOI: 10.1186/s13568-016-0313-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 12/19/2016] [Indexed: 01/26/2023] Open
Abstract
Clonostachys rosea is a promising biocontrol fungus active against various plant fungal pathogens. In this study, the endochitinase-encoding gene Chi67-1, the expression of which is sharply upregulated in C. rosea 67-1 when induced by sclerotia, was transformed into the original isolate by protoplast transformation, and transformants were screened against Sclerotinia rot of soybean. The transformation efficiency was approximately 50 transformants per 1 × 107 protoplasts, and 68 stably heritable recombinants were assayed. The parasitic rates of 32.4% of the tested strains increased by more than 50% compared to 43.3% of the wild type strain in 16 h, and the Rc4-4 transformant showed a parasitic rate of 100% in 16 h. The control efficiencies of the selected efficient transformants to soybean Sclerotinia stem rot were evaluated in pots in the greenhouse, and the results revealed that Rc4-4 achieved the highest efficiency of 81.4%, which was 31.7% and 28.7% higher than the control achieved by the wide type and the pesticide carbendazim, respectively. Furthermore, the expression level of Chi67-1 was 107-fold higher in Rc4-4 than in the wild type, and accordingly, the chitinase activity of the recombinant increased by 140%. The results lay a foundation for the development of efficient genetically engineered strains of C. rosea.
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Mohammadzadeh R, Agheshlouie M, Mahdavinia GR. Expression of chitinase gene in BL21 pET system and investigating the biocatalystic performance of chitinase-loaded AlgSep nanocomposite beads. Int J Biol Macromol 2017; 104:1664-1671. [DOI: 10.1016/j.ijbiomac.2017.03.119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/10/2017] [Accepted: 03/21/2017] [Indexed: 01/30/2023]
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Parmar N, Singh KH, Sharma D, Singh L, Kumar P, Nanjundan J, Khan YJ, Chauhan DK, Thakur AK. Genetic engineering strategies for biotic and abiotic stress tolerance and quality enhancement in horticultural crops: a comprehensive review. 3 Biotech 2017; 7:239. [PMID: 28702937 PMCID: PMC5507805 DOI: 10.1007/s13205-017-0870-y] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/02/2017] [Indexed: 11/28/2022] Open
Abstract
Genetic engineering technique offers myriads of applications in improvement of horticultural crops for biotic and abiotic stress tolerance, and produce quality enhancement. During last two decades, a large number of transgenic horticultural crops has been developed and more are underway. A number of genes including natural and synthetic Cry genes, protease inhibitors, trypsin inhibitors and cystatin genes have been used to incorporate insect and nematode resistance. For providing protection against fungal and bacterial diseases, various genes like chitinase, glucanase, osmotin, defensin and pathogenesis-related genes are being transferred to many horticultural crops world over. RNAi technique has been found quite successful in inducing virus resistance in horticultural crops in addition to coat protein genes. Abiotic stresses such as drought, heat and salinity adversely affect production and productivity of horticultural crops and a number of genes encoding for biosynthesis of stress protecting compounds including mannitol, glycine betaine and heat shock proteins have been employed for abiotic stress tolerance besides various transcription factors like DREB1, MAPK, WRKY, etc. Antisense gene and RNAi technologies have revolutionized the pace of improvement of horticultural crops, particularly ornamentals for color modification, increasing shelf-life and reducing post-harvest losses. Precise genome editing tools, particularly CRISPR/Cas9, have been efficiently applied in tomato, petunia, citrus, grape, potato and apple for gene mutation, repression, activation and epigenome editing. This review provides comprehensive overview to draw the attention of researchers for better understanding of genetic engineering advancements in imparting biotic and abiotic stress tolerance as well as on improving various traits related to quality, texture, plant architecture modification, increasing shelf-life, etc. in different horticultural crops.
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Affiliation(s)
- Nehanjali Parmar
- Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, HP, 173 230, India.
| | | | - Deepika Sharma
- ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, 321 303, India
| | - Lal Singh
- ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, 321 303, India
| | - Pankaj Kumar
- National Institute of Plant Genome Research, New Delhi, 110 067, India
| | - J Nanjundan
- ICAR-Indian Agricultural Research Institute, Regional Station, Wellington, The Nilgiris, Tamilnadu, 643 231, India
| | - Yasin Jeshima Khan
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, PUSA Campus, New Delhi, 110 012, India
| | - Devendra Kumar Chauhan
- Division of Plant Breeding and Genetics, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha, Jammu, J&K, 180 009, India
| | - Ajay Kumar Thakur
- ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, 321 303, India
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Rostami A, Hinc K, Goshadrou F, Shali A, Bayat M, Hassanzadeh M, Amanlou M, Eslahi N, Ahmadian G. Display of B. pumilus chitinase on the surface of B. subtilis spore as a potential biopesticide. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 140:17-23. [PMID: 28755689 DOI: 10.1016/j.pestbp.2017.05.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/09/2017] [Accepted: 05/30/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Chitinases can inhibit the growth of many fungal diseases which are a great threat for global agricultural production. Biological control of pathogens like fungi, is believed to be one of the best ways to eliminate the adverse effects of plant pathogens. To this end, we expressed and displayed a chitinase from Bacillus pumilus (ChiS) on the surface of Bacillus subtilis spores, as a biocontrol agent. RESULT ChiS enzyme from B. pumilus was expressed on the spores of B. subtilis using CotG as a carrier protein. Immunofluorescence microscopy confirmed the expression of ChiS on the surface of the spores. Enzyme activity assay showed that the surface displayed ChiS was active and was also able to inhibit the growth of Rhizoctonia solani and Trichoderma harzianum fungi. Western blot analysis also indicated that CotG-ChiS is partially processed after display. Molecular dynamics simulation showed that the stability of the heterologous protein was decreased after fusion. CONCLUSION ChiS was successfully displayed on the surface of Bacillus spores by fusion to the CotG, one of the main spore coat proteins. In-vitro experiments showed that the displayed enzyme was effective in growth inhibition of R. solani and T. harzianum fungi.
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Affiliation(s)
- Amin Rostami
- Department of Industrial and Environmental Biotechnology, National Institute of Genetics Engineering and Biotechnology (NIGEB), Tehran, Iran; Department of Physiology, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Krzysztof Hinc
- Department of Medical Biotechnology, Intercollegiate Faculty of Biotechnology, UG-MUG, Gdansk, Poland
| | - Fatemeh Goshadrou
- Department of Physiology, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Shali
- Department of Industrial and Environmental Biotechnology, National Institute of Genetics Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Mahdieh Bayat
- Department of Industrial and Environmental Biotechnology, National Institute of Genetics Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Malihe Hassanzadeh
- Department of Medicinal Chemistry, Drug Design and Development Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Massoud Amanlou
- Department of Medicinal Chemistry, Drug Design and Development Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Negin Eslahi
- Department of Industrial and Environmental Biotechnology, National Institute of Genetics Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Gholamreza Ahmadian
- Department of Industrial and Environmental Biotechnology, National Institute of Genetics Engineering and Biotechnology (NIGEB), Tehran, Iran.
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Kashyap PL, Rai P, Srivastava AK, Kumar S. Trichoderma for climate resilient agriculture. World J Microbiol Biotechnol 2017; 33:155. [PMID: 28695465 DOI: 10.1007/s11274-017-2319-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 07/05/2017] [Indexed: 01/16/2023]
Abstract
Climate change is one of the biggest challenges of the twenty-first century for sustainable agricultural production. Several reports highlighted the need for better agricultural practices and use of eco-friendly methods for sustainable crop production under such situations. In this context, Trichoderma species could be a model fungus to sustain crop productivity. Currently, these are widely used as inoculants for biocontrol, biofertilization, and phytostimulation. They are reported to improve photosynthetic efficiency, enhance nutrient uptake and increase nitrogen use efficiency in crops. Moreover, they can be used to produce bio-energy, facilitate plants for adaptation and mitigate adverse effect of climate change. The technological advancement in high throughput DNA sequencing and biotechnology provided deep insight into the complex and diverse biotic interactions established in nature by Trichoderma spp. and efforts are being made to translate this knowledge to enhance crop growth, resistance to disease and tolerance to abiotic stresses under field conditions. The discovery of several traits and genes that are involved in the beneficial effects of Trichoderma spp. has resulted in better understanding of the performance of bioinoculants in the field, and will lead to more efficient use of these strains and possibly to their improvement by genetic modification. The present mini-review is an effort to elucidate the molecular basis of plant growth promotion and defence activation by Trichoderma spp. to garner broad perspectives regarding their functioning and applicability for climate resilient agriculture.
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Affiliation(s)
- Prem Lal Kashyap
- ICAR-Indian Institute of Wheat and Barley Research (IIWBR), Karnal, 132001, India. .,ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India.
| | - Pallavi Rai
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India
| | - Alok Kumar Srivastava
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India
| | - Sudheer Kumar
- ICAR-Indian Institute of Wheat and Barley Research (IIWBR), Karnal, 132001, India
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Herath HHMAU, Wijesundera RLC, Chandrasekharan NV, Wijesundera WSS. Exploration of Sri Lankan soil fungi for biocontrol properties. ACTA ACUST UNITED AC 2017. [DOI: 10.5897/ajb2017.15905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Identification of differentially expressed genes from Trichoderma atroviride strain SS003 in the presence of cell wall of Cronartium ribicola. Genes Genomics 2017. [DOI: 10.1007/s13258-016-0512-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mokhtar MAK, Nehal SEM. Potential control of beans (Phaseolus vulgaris L.) wilt disease using growth regulators, bioagent, antioxidants and essential oils as foliar application under field conditions. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajmr2016.8359] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Zhang F, Ruan X, Wang X, Liu Z, Hu L, Li C. Overexpression of a Chitinase Gene from Trichoderma asperellum Increases Disease Resistance in Transgenic Soybean. Appl Biochem Biotechnol 2016; 180:1542-1558. [PMID: 27544774 DOI: 10.1007/s12010-016-2186-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/01/2016] [Indexed: 12/16/2023]
Abstract
In the present study, a chi gene from Trichoderma asperellum, designated Tachi, was cloned and functionally characterized in soybean. Firstly, the effects of sodium thiosulfate on soybean Agrobacterium-mediated genetic transformation with embryonic tip regeneration system were investigated. The transformation frequency was improved by adding sodium thiosulfate in co-culture medium for three soybean genotypes. Transgenic soybean plants with constitutive expression of Tachi showed increased resistance to Sclerotinia sclerotiorum compared to WT plants. Meanwhile, overexpression of Tachi in soybean exhibited increased reactive oxygen species (ROS) level as well as peroxidase (POD) and catalase (SOD) activities, decreased malondialdehyde (MDA) content, along with diminished electrolytic leakage rate after S. sclerotiorum inoculation. These results suggest that Tachi can improve disease resistance in plants by enhancing ROS accumulation and activities of ROS scavenging enzymes and then diminishing cell death. Therefore, Tachi represents a candidate gene with potential application for increasing disease resistance in plants.
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Affiliation(s)
- Fuli Zhang
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, 466001, China.
| | - Xianle Ruan
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, 466001, China
| | - Xian Wang
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, 466001, China
| | - Zhihua Liu
- School of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Lizong Hu
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, 466001, China
| | - Chengwei Li
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, 466001, China.
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Ruocco M, Lanzuise S, Lombardi N, Varlese R, Aliberti A, Carpenito S, Woo S, Scala F, Lorito M. New tools to improve the shelf life of chestnut fruit during storage. ACTA ACUST UNITED AC 2016. [DOI: 10.17660/actahortic.2016.1144.46] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chen J, Sun L, Cheng Y, Lu Z, Shao K, Li T, Hu C, Han H. Graphene Oxide-Silver Nanocomposite: Novel Agricultural Antifungal Agent against Fusarium graminearum for Crop Disease Prevention. ACS APPLIED MATERIALS & INTERFACES 2016; 8:24057-70. [PMID: 27563750 DOI: 10.1021/acsami.6b05730] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Nanoparticle-based antibacterial agents have emerged as an interdisciplinary field involving medicine, material science, biology, and chemistry because of their size-dependent qualities, high surface-to-volume ratio, and unique physiochemical properties. Some of them have shown great promise for their application in plant protection and nutrition. Here, GO-AgNPs nanocomposite was fabricated through interfacial electrostatic self-assembly and its antifungal activity against phytopathogen Fusarium graminearum was investigated in vitro and in vivo for the first time. The results demonstrated that the GO-AgNPs nanocomposite showed almost a 3- and 7-fold increase of inhibition efficiency over pure AgNPs and GO suspension, respectively. The spore germination inhibition was stimulated by a relatively low concentration of 4.68 μg/mL (minimum inhibition concentration (MIC)). The spores and hyphae were damaged, which might be caused by an antibacterial mechanism from the remarkable synergistic effect of GO-AgNPs, inducing physical injury and chemical reactive oxygen species generation. More importantly, the chemical reduction of GO mediated by fungal spores was possibly contributed to the high antimicrobial activity of GO-AgNPs. Furthermore, the GO-AgNPs nanocomposite showed a significant effect in controlling the leaf spot disease infected by F. graminearum in the detached leaf experiment. All the results from this research suggest that the GO-AgNPs nanocomposite developed in this work has the potential as a promising material for the development of novel antimicrobial agents against pathogenic fungi or bacteria.
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Affiliation(s)
- Juanni Chen
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
- Laboratory of Natural Product Pesticide, College of Plant Protection, Southwest University , Chongqing, 400715, P.R. China
| | - Long Sun
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
| | - Yuan Cheng
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
| | - Zhicheng Lu
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
| | - Kang Shao
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
| | - Tingting Li
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
| | - Chao Hu
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
| | - Heyou Han
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, College of Science, Huazhong Agricultural University , Wuhan, 430070, P.R. China
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Khan FI, Bisetty K, Singh S, Permaul K, Hassan MI. Chitinase from Thermomyces lanuginosus SSBP and its biotechnological applications. Extremophiles 2016; 19:1055-66. [PMID: 26462798 DOI: 10.1007/s00792-015-0792-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 10/03/2015] [Indexed: 12/30/2022]
Abstract
Chitinases are ubiquitous class of extracellular enzymes, which have gained attention in the past few years due to their wide biotechnological applications. The effectiveness of conventional insecticides is increasingly compromised by the occurrence of resistance; thus, chitinase offers a potential alternative to the use of chemical fungicides. The thermostable enzymes from thermophilic microorganisms have numerous industrial, medical, environmental and biotechnological applications due to their high stability for temperature and pH. Thermomyces lanuginosus produced a large number of chitinases, of which chitinase I and II are successfully cloned and purified recently. Molecular dynamic simulations revealed that the stability of these enzymes are maintained even at higher temperature. In this review article we have focused on chitinases from different sources, mainly fungal chitinase of T. lanuginosus and its industrial application.
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Aghazadeh R, Zamani M, Motallebi M, Moradyar M, Moghadassi Jahromi Z. Co-transformation of canola by chimeric chitinase and tlp genes towards improving resistance to Sclerotinia sclerotiorum. World J Microbiol Biotechnol 2016; 32:144. [PMID: 27430511 DOI: 10.1007/s11274-016-2104-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 06/27/2016] [Indexed: 01/16/2023]
Abstract
Canola (Brassica napus) plants were co-transformed with two pathogenesis-related protein genes expressing a Trichoderma atroviride chitinase with a chitin-binding domain (chimeric chitinase) and a thaumatin-like protein (tlp) from Oryza sativa conferring resistance to phytopatogenic fungi by Agrobacterium-mediated transformation. The putative transgenic plants were confirmed by PCR. After measuring the specific activity of the chimeric chitinase and glucanase activity for tlp genes, transgenic plants with high specific activity were selected for southern blot analysis to confirm the copy number of the genes. In vitro assays, the antifungal activity of crude extracted protein against Sclerotinia sclerotiorum showed that the inhibition percentage in double transgenic plants was between 55 and 62, whereas the inhibition percentage in single-gene transformants (chimeric chitinase) ranged from 35 to 45 percent. Importantly, in greenhouse conditions, the double transgenic plants showed significant resistance than the single-gene transformant and wild type plants. The results in T2 generation using the intact leaf inoculation method showed that the average lesion diameters were 10, 14.7 and 29 mm for the double transformant, single-gene transformant and non-transgenic plants, respectively. Combined expression of chimeric chitinase and tlp in transgenic plants showed significantly enhanced resistance against S. sclerotiorum than the one that express single-gene transformant plants. These results suggest that the co-expression of chimeric chitinase and tlp can confer enhanced disease resistance in canola plant.
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Affiliation(s)
- Rustam Aghazadeh
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P.O. Box 14965/161, Tehran, Iran
| | - Mohammadreza Zamani
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P.O. Box 14965/161, Tehran, Iran.
| | - Mostafa Motallebi
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P.O. Box 14965/161, Tehran, Iran
| | - Mehdi Moradyar
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P.O. Box 14965/161, Tehran, Iran
| | - Zahra Moghadassi Jahromi
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P.O. Box 14965/161, Tehran, Iran
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Dessaux Y, Grandclément C, Faure D. Engineering the Rhizosphere. TRENDS IN PLANT SCIENCE 2016; 21:266-278. [PMID: 26818718 DOI: 10.1016/j.tplants.2016.01.002] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 12/14/2015] [Accepted: 01/04/2016] [Indexed: 05/25/2023]
Abstract
All components of the rhizosphere can be engineered to promote plant health and growth, two features that strongly depend upon the interactions of living organisms with their environment. This review describes the progress in plant and microbial molecular genetics and ecology that has led to a wealth of potential applications. Recent efforts especially deal with the plant defense machinery that is instrumental in engineering plant resistance to biotic stresses. Another approach involves microbial population engineering rather than single strain engineering. More generally, the plants (and the associated microbes) are no longer seen as 'individual' but rather as a holobiont, in other words a unit of selection in evolution, a concept that holds great promise for future plant breeding programs.
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Affiliation(s)
- Yves Dessaux
- Institute for Integrative Biology of the Cell (I2BC), Commissariat à l'Energie Atomique (CEA), Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette CEDEX, France.
| | - Catherine Grandclément
- Institute for Integrative Biology of the Cell (I2BC), Commissariat à l'Energie Atomique (CEA), Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette CEDEX, France
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), Commissariat à l'Energie Atomique (CEA), Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette CEDEX, France
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Zeilinger S, Gupta VK, Dahms TES, Silva RN, Singh HB, Upadhyay RS, Gomes EV, Tsui CKM, Nayak S C. Friends or foes? Emerging insights from fungal interactions with plants. FEMS Microbiol Rev 2016; 40:182-207. [PMID: 26591004 PMCID: PMC4778271 DOI: 10.1093/femsre/fuv045] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 06/11/2015] [Accepted: 10/11/2015] [Indexed: 12/22/2022] Open
Abstract
Fungi interact with plants in various ways, with each interaction giving rise to different alterations in both partners. While fungal pathogens have detrimental effects on plant physiology, mutualistic fungi augment host defence responses to pathogens and/or improve plant nutrient uptake. Tropic growth towards plant roots or stomata, mediated by chemical and topographical signals, has been described for several fungi, with evidence of species-specific signals and sensing mechanisms. Fungal partners secrete bioactive molecules such as small peptide effectors, enzymes and secondary metabolites which facilitate colonization and contribute to both symbiotic and pathogenic relationships. There has been tremendous advancement in fungal molecular biology, omics sciences and microscopy in recent years, opening up new possibilities for the identification of key molecular mechanisms in plant-fungal interactions, the power of which is often borne out in their combination. Our fragmentary knowledge on the interactions between plants and fungi must be made whole to understand the potential of fungi in preventing plant diseases, improving plant productivity and understanding ecosystem stability. Here, we review innovative methods and the associated new insights into plant-fungal interactions.
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Affiliation(s)
- Susanne Zeilinger
- Institute of Microbiology, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - Vijai K Gupta
- Molecular Glycobiotechnology Group, Discipline of Biochemistry, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Tanya E S Dahms
- Department of Chemistry and Biochemistry, University of Regina, SK, Canada
| | - Roberto N Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo (USP), 14049-900 Ribeirão Preto, SP, Brazil
| | - Harikesh B Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005, India
| | - Ram S Upadhyay
- Department of Botany, Banaras Hindu University, Varanasi 221 005, India
| | - Eriston Vieira Gomes
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo (USP), 14049-900 Ribeirão Preto, SP, Brazil
| | - Clement Kin-Ming Tsui
- Department of Pathology and Laboratory Medicine, the University of British Columbia, Vancouver, BC, Canada V6T 1Z4
| | - Chandra Nayak S
- Department of Biotechnology, University of Mysore, Mysore-570001, Karnataka, India
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Enhanced resistance to Sclerotinia sclerotiorum in Brassica napus by co-expression of defensin and chimeric chitinase genes. J Appl Genet 2016; 57:417-425. [PMID: 26862081 DOI: 10.1007/s13353-016-0340-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 01/19/2016] [Accepted: 01/25/2016] [Indexed: 01/19/2023]
Abstract
Sclerotinia stem rot caused by Sclerotinia sclerotiorum is one of the major fungal diseases of Brassica napus L. To develop resistance against this fungal disease, the defensin gene from Raphanus sativus and chimeric chit42 from Trichoderma atroviride with a C-terminal fused chitin-binding domain from Serratia marcescens were co-expressed in canola via Agrobacterium-mediated transformation. Twenty transformants were confirmed to carry the two transgenes as detected by polymerase chain reaction (PCR), with 4.8 % transformation efficiency. The chitinase activity of PCR-positive transgenic plants were measured in the presence of colloidal chitin, and five transgenic lines showing the highest chitinase activity were selected for checking the copy number of the transgenes through Southern blot hybridisation. Two plants carried a single copy of the transgenes, while the remainder carried either two or three copies of the transgenes. The antifungal activity of two transgenic lines that carried a single copy of the transgenes (T4 and T10) was studied by a radial diffusion assay. It was observed that the constitutive expression of these transgenes in the T4 and T10 transgenic lines suppressed the growth of S. sclerotiorum by 49 % and 47 %, respectively. The two transgenic lines were then let to self-pollinate to produce the T2 generation. Greenhouse bioassays were performed on the transgenic T2 young leaves by challenging with S. sclerotiorum and the results revealed that the expression of defensin and chimeric chitinase from a heterologous source in canola demonstrated enhanced resistance against sclerotinia stem rot disease.
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Naglot A, Goswami S, Rahman I, Shrimali DD, Yadav KK, Gupta VK, Rabha AJ, Gogoi HK, Veer V. Antagonistic Potential of Native Trichoderma viride Strain against Potent Tea Fungal Pathogens in North East India. THE PLANT PATHOLOGY JOURNAL 2015; 31:278-89. [PMID: 26361476 PMCID: PMC4564153 DOI: 10.5423/ppj.oa.01.2015.0004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 06/23/2015] [Accepted: 06/26/2015] [Indexed: 05/20/2023]
Abstract
Indigenous strains of Trichoderma species isolated from rhizosphere soils of Tea gardens of Assam, north eastern state of India were assessed for in vitro antagonism against two important tea fungal pathogens namely Pestalotia theae and Fusarium solani. A potent antagonist against both tea pathogenic fungi, designated as SDRLIN1, was selected and identified as Trichoderma viride. The strain also showed substantial antifungal activity against five standard phytopathogenic fungi. Culture filtrate collected from stationary growth phase of the antagonist demonstrated a significantly higher degree of inhibitory activity against all the test fungi, demonstrating the presence of an optimal blend of extracellular antifungal metabolites. Moreover, quantitative enzyme assay of exponential and stationary culture filtrates revealed that the activity of cellulase, β-1,3-glucanase, pectinase, and amylase was highest in the exponential phase, whereas the activity of proteases and chitinase was noted highest in the stationary phase. Morphological changes such as hyphal swelling and distortion were also observed in the fungal pathogen grown on potato dextrose agar containing stationary phase culture filtrate. Moreover, the antifungal activity of the filtrate was significantly reduced but not entirely after heat or proteinase K treatment, demonstrating substantial role of certain unknown thermostable antifungal compound(s) in the inhibitory activity.
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Affiliation(s)
- A. Naglot
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
| | - S. Goswami
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
| | - I. Rahman
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
| | - D. D. Shrimali
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
| | - Kamlesh K. Yadav
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
| | - Vikas K. Gupta
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
| | | | - H. K. Gogoi
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
| | - Vijay Veer
- Defence Research Laboratory, Post Bag No. 2, Tezpur (Assam),
India
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Mercado JA, Barceló M, Pliego C, Rey M, Caballero JL, Muñoz-Blanco J, Ruano-Rosa D, López-Herrera C, de Los Santos B, Romero-Muñoz F, Pliego-Alfaro F. Expression of the β-1,3-glucanase gene bgn13.1 from Trichoderma harzianum in strawberry increases tolerance to crown rot diseases but interferes with plant growth. Transgenic Res 2015; 24:979-89. [PMID: 26178245 DOI: 10.1007/s11248-015-9895-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 06/29/2015] [Indexed: 11/24/2022]
Abstract
The expression of antifungal genes from Trichoderma harzianum, mainly chitinases, has been used to confer plant resistance to fungal diseases. However, the biotechnological potential of glucanase genes from Trichoderma has been scarcely assessed. In this research, transgenic strawberry plants expressing the β-1,3-glucanase gene bgn13.1 from T. harzianum, under the control of the CaMV35S promoter, have been generated. After acclimatization, five out of 12 independent lines analysed showed a stunted phenotype when growing in the greenhouse. Moreover, most of the lines displayed a reduced yield due to both a reduction in the number of fruit per plant and a lower fruit size. Several transgenic lines showing higher glucanase activity in leaves than control plants were selected for pathogenicity tests. When inoculated with Colletotrichum acutatum, one of the most important strawberry pathogens, transgenic lines showed lower anthracnose symptoms in leaf and crown than control. In the three lines selected, the percentage of plants showing anthracnose symptoms in crown decreased from 61 % to a mean value of 16.5 %, in control and transgenic lines, respectively. Some transgenic lines also showed an enhanced resistance to Rosellinia necatrix, a soil-borne pathogen causing root and crown rot in strawberry. These results indicate that bgn13.1 from T. harzianum can be used to increase strawberry tolerance to crown rot diseases, although its constitutive expression affects plant growth and fruit yield. Alternative strategies such as the use of tissue specific promoters might avoid the negative effects of bgn13.1 expression in plant performance.
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Affiliation(s)
- José A Mercado
- Departamento de Biología Vegetal, Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", IHSM-UMA-CSIC, Universidad de Málaga, 29071, Málaga, Spain.
| | | | - Clara Pliego
- IFAPA, Centro de Churriana, 29140, Málaga, Spain
| | - Manuel Rey
- Newbiotechnic S.A., 41110, Seville, Spain
| | - José L Caballero
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Córdoba, Spain
| | - Juan Muñoz-Blanco
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Córdoba, Spain
| | - David Ruano-Rosa
- Instituto de Agricultura Sostenible, CSIC, 14080, Córdoba, Spain
| | | | | | | | - Fernando Pliego-Alfaro
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", IHSM-UMA-CSIC, Universidad de Málaga, 29071, Málaga, Spain
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50
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Zhang M, Ahmed Rajput N, Shen D, Sun P, Zeng W, Liu T, Juma Mafurah J, Dou D. A Phytophthora sojae cytoplasmic effector mediates disease resistance and abiotic stress tolerance in Nicotiana benthamiana. Sci Rep 2015; 5:10837. [PMID: 26039925 PMCID: PMC4454142 DOI: 10.1038/srep10837] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 05/05/2015] [Indexed: 11/29/2022] Open
Abstract
Each oomycete pathogen encodes a large number of effectors. Some effectors can be used in crop disease resistance breeding, such as to accelerate R gene cloning and utilisation. Since cytoplasmic effectors may cause acute physiological changes in host cells at very low concentrations, we assume that some of these effectors can serve as functional genes for transgenic plants. Here, we generated transgenic Nicotiana benthamiana plants that express a Phytophthora sojae CRN (crinkling and necrosis) effector, PsCRN115. We showed that its expression did not significantly affect the growth and development of N. benthamiana, but significantly improved disease resistance and tolerance to salt and drought stresses. Furthermore, we found that expression of heat-shock-protein and cytochrome-P450 encoding genes were unregulated in PsCRN115-transgenic N. benthamiana based on digital gene expression profiling analyses, suggesting the increased plant defence may be achieved by upregulation of these stress-related genes in transgenic plants. Thus, PsCRN115 may be used to improve plant tolerance to biotic and abiotic stresses.
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Affiliation(s)
- Meixiang Zhang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
| | - Nasir Ahmed Rajput
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
- Department of Plant Pathology, Sindh Agriculture University, Tandojam, Pakistan
| | - Danyu Shen
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
| | - Peng Sun
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
| | - Wentao Zeng
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
| | - Tingli Liu
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
| | - Joseph Juma Mafurah
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
| | - Daolong Dou
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
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