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Pal G, Ingole KD, Yavvari PS, Verma P, Kumari A, Chauhan C, Chaudhary D, Srivastava A, Bajaj A, Vemanna RS. Exogenous application of nanocarrier-mediated double-stranded RNA manipulates physiological traits and defence response against bacterial diseases. MOLECULAR PLANT PATHOLOGY 2024; 25:e13417. [PMID: 38279851 PMCID: PMC10799200 DOI: 10.1111/mpp.13417] [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: 08/01/2023] [Revised: 12/09/2023] [Accepted: 12/17/2023] [Indexed: 01/29/2024]
Abstract
Stability and delivery are major challenges associated with exogenous double-stranded RNA (dsRNA) application into plants. We report the encapsulation and delivery of dsRNA in cationic poly-aspartic acid-derived polymer (CPP6) into plant cells. CPP6 stabilizes the dsRNAs during long exposure at varied temperatures and pH, and protects against RNase A degradation. CPP6 helps dsRNA uptake through roots or foliar spray and facilitates systemic movement to induce endogenous gene silencing. The fluorescence of Arabidopsis GFP-overexpressing transgenic plants was significantly reduced after infiltration with gfp-dsRNA-CPP6 by silencing of the transgene compared to plants treated only with gfp-dsRNA. The plant endogenous genes flowering locus T (FT) and phytochrome interacting factor 4 (PIF4) were downregulated by a foliar spray of ft-dsRNA-CPP6 and pif4-dsRNA-CPP6 in Arabidopsis, with delayed flowering and enhanced biomass. The rice PDS gene targeted by pds-dsRNA-CPP6 through root uptake was effectively silenced and plants showed a dwarf and albino phenotype. The NaCl-induced OsbZIP23 was targeted through root uptake of bzip23-dsRNA-CPP6 and showed reduced transcripts and seedling growth compared to treatment with naked dsRNA. The negative regulators of plant defence SDIR1 and SWEET14 were targeted through foliar spray to provide durable resistance against bacterial leaf blight disease caused by Xanthomonas oryzae pv. oryzae (Xoo). Overall, the study demonstrates that transient silencing of plant endogenous genes using polymer-encapsulated dsRNA provides prolonged and durable resistance against Xoo, which could be a promising tool for crop protection and for sustaining productivity.
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Affiliation(s)
- Garima Pal
- Laboratory of Plant Functional GenomicsRegional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | - Kishor D. Ingole
- Laboratory of Plant Functional GenomicsRegional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | | | - Priyanka Verma
- Laboratory of Nanotechnology and Chemical BiologyRegional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | - Ankit Kumari
- Plant Genetic Engineering LabCentre for Biotechnology, Maharshi Dayananda UniversityRohtakIndia
| | - Chetan Chauhan
- Laboratory of Plant Functional GenomicsRegional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | - Darshna Chaudhary
- Plant Genetic Engineering LabCentre for Biotechnology, Maharshi Dayananda UniversityRohtakIndia
| | - Aasheesh Srivastava
- Department of ChemistryIndian Institute of Science Education and ResearchBhopalIndia
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical BiologyRegional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | - Ramu S. Vemanna
- Laboratory of Plant Functional GenomicsRegional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
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Zhang J, Li H, Zhong X, Tian J, Segers A, Xia L, Francis F. Silencing an aphid-specific gene SmDSR33 for aphid control through plant-mediated RNAi in wheat. FRONTIERS IN PLANT SCIENCE 2023; 13:1100394. [PMID: 36699834 PMCID: PMC9868936 DOI: 10.3389/fpls.2022.1100394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Grain aphid (Sitobion miscanthi) is one of the most dominant and devastating insect pests in wheat, which causes substantial losses to wheat production each year. Engineering transgenic plants expressing double strand RNA (dsRNA) targeting an insect-specific gene has been demonstrated to provide an alternative environmentally friendly strategy for aphid management through plant-mediated RNA interference (RNAi). Here we identified and characterized a novel potential RNAi target gene (SmDSR33) which was a gene encoding a putative salivary protein. We then generated stable transgenic wheat lines expressing dsRNA for targeted silencing of SmDSR33 in grain aphids through plant-mediated RNAi. After feeding on transgenic wheat plants expressing SmDSR33-dsRNA, the attenuated expression levels of SmDSR33 in aphids were observed when compared to aphids feeding on wild-type plants. The decreased SmDSR33 expression levels thus resulted in significantly reduced fecundity and survival, and decreased reproduction of aphids. We also observed altered aphid feeding behaviors such as longer duration of intercellular stylet pathway and shorter duration of passive ingestion in electroneurography assays. Furthermore, both the surviving aphids and their offspring exhibited decreased survival rates and fecundity, indicating that the silencing effect could be persistent and transgenerational in grain aphids. The results demonstrated that SmDSR33 can be selected as an effective RNAi target for wheat aphid control. Silencing of an essential salivary protein gene involved in ingestion through plant-mediated RNAi could be exploited as an effective strategy for aphid control in wheat.
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Affiliation(s)
- Jiahui Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Huiyuan Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Xue Zhong
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Jinfu Tian
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Arnaud Segers
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Lanqin Xia
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences/Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Frédéric Francis
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
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Elston KM, Maeda GP, Perreau J, Barrick JE. Addressing the challenges of symbiont-mediated RNAi in aphids. PeerJ 2023; 11:e14961. [PMID: 36874963 PMCID: PMC9983426 DOI: 10.7717/peerj.14961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 02/05/2023] [Indexed: 03/06/2023] Open
Abstract
Because aphids are global agricultural pests and models for bacterial endosymbiosis, there is a need for reliable methods to study and control their gene function. However, current methods available for aphid gene knockout and knockdown of gene expression are often unreliable and time consuming. Techniques like CRISPR-Cas genome editing can take several months to achieve a single gene knockout because they rely on aphids going through a cycle of sexual reproduction, and aphids often lack strong, consistent levels of knockdown when fed or injected with molecules that induce an RNA interference (RNAi) response. In the hopes of addressing these challenges, we attempted to adapt a new method called symbiont-mediated RNAi (smRNAi) for use in aphids. smRNAi involves engineering a bacterial symbiont of the insect to continuously supply double-stranded RNA (dsRNA) inside the insect body. This approach has been successful in thrips, kissing bugs, and honeybees. We engineered the laboratory Escherichia coli strain HT115 and the native aphid symbiont Serratia symbiotica CWBI-2.3T to produce dsRNA inside the gut of the pea aphid (Acyrthosiphon pisum) targeting salivary effector protein (C002) or ecdysone receptor genes. For C002 assays, we also tested co-knockdown with an aphid nuclease (Nuc1) to reduce RNA degradation. However, we found that smRNAi was not a reliable method for aphid gene knockdown under our conditions. We were unable to consistently achieve the expected phenotypic changes with either target. However, we did see indications that elements of the RNAi pathway were modestly upregulated, and expression of some targeted genes appeared to be somewhat reduced in some trials. We conclude with a discussion of the possible avenues through which smRNAi, and aphid RNAi in general, could be improved in the future.
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Affiliation(s)
- Katherine M Elston
- Department of Molecular Biosciences, The University of Texas, Austin, Texas, United States
| | - Gerald P Maeda
- Department of Integrative Biology, The University of Texas, Austin, Texas, United States
| | - Julie Perreau
- Department of Molecular Biosciences, The University of Texas, Austin, Texas, United States.,Department of Integrative Biology, The University of Texas, Austin, Texas, United States
| | - Jeffrey E Barrick
- Department of Molecular Biosciences, The University of Texas, Austin, Texas, United States
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Halder K, Chaudhuri A, Abdin MZ, Majee M, Datta A. RNA Interference for Improving Disease Resistance in Plants and Its Relevance in This Clustered Regularly Interspaced Short Palindromic Repeats-Dominated Era in Terms of dsRNA-Based Biopesticides. FRONTIERS IN PLANT SCIENCE 2022; 13:885128. [PMID: 35645997 PMCID: PMC9141053 DOI: 10.3389/fpls.2022.885128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
RNA interference (RNAi) has been exploited by scientists worldwide to make a significant contribution in the arena of sustainable agriculture and integrated pest management. These strategies are of an imperative need to guarantee food security for the teeming millions globally. The already established deleterious effects of chemical pesticides on human and livestock health have led researchers to exploit RNAi as a potential agri-biotechnology tool to solve the burning issue of agricultural wastage caused by pests and pathogens. On the other hand, CRISPR/Cas9, the latest genome-editing tool, also has a notable potential in this domain of biotic stress resistance, and a constant endeavor by various laboratories is in progress for making pathogen-resistant plants using this technique. Considerable outcry regarding the ill effects of genetically modified (GM) crops on the environment paved the way for the research of RNAi-induced double-stranded RNAs (dsRNA) and their application to biotic stresses. Here, we mainly focus on the application of RNAi technology to improve disease resistance in plants and its relevance in today's CRISPR-dominated world in terms of exogenous application of dsRNAs. We also focused on the ongoing research, public awareness, and subsequent commercialization of dsRNA-based biocontrol products.
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Affiliation(s)
- Koushik Halder
- National Institute of Plant Genome Research, New Delhi, India
- Centre for Transgenic Plant Development, Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard University, New Delhi, India
| | - Abira Chaudhuri
- National Institute of Plant Genome Research, New Delhi, India
| | - Malik Z. Abdin
- Centre for Transgenic Plant Development, Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard University, New Delhi, India
| | - Manoj Majee
- National Institute of Plant Genome Research, New Delhi, India
| | - Asis Datta
- National Institute of Plant Genome Research, New Delhi, India
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5
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RNAi technology for plant protection and its application in wheat. ABIOTECH 2021; 2:365-374. [PMID: 36304420 PMCID: PMC9590511 DOI: 10.1007/s42994-021-00036-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/23/2021] [Indexed: 12/25/2022]
Abstract
The RNAi technology takes advantage of the intrinsic RNA interference (RNAi) mechanism that exists in nearly all eukaryotes in which target mRNAs are degraded or functionally suppressed. Significant progress has been made in recent years where RNAi technology is applied to several crops and economic plants for protection against diseases like fungi, pests, and nematode. RNAi technology is also applied in controlling pathogen damages in wheat, one of the most important crops in the world. In this review, we first give a brief introduction of the RNAi technology and the underneath mechanism. We then review the recent progress of its utilization in crops, particular wheat. Finally, we discuss the existing challenges and prospect future development of this technology in crop protection.
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Koch A, Wassenegger M. Host-induced gene silencing - mechanisms and applications. THE NEW PHYTOLOGIST 2021; 231:54-59. [PMID: 33774815 DOI: 10.1111/nph.17364] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/10/2021] [Indexed: 05/05/2023]
Abstract
Host-induced gene silencing (HIGS) technology has emerged as a powerful alternative to chemical treatments for protecting plants from pathogens or pests. More than 170 HIGS studies have been published so far, and HIGS products have been launched. First, we discuss the strengths and limitations of this technology in a pathosystem-specific context. Next, we highlight the requirement for fundamental knowledge on the molecular mechanisms (i.e. uptake, processing and translocation of transgene-expressed double-stranded RNAs) that determine the efficacy and specificity of HIGS. Additionally, we speculate on the contribution of host and target RNA interference machineries, which may be incompatible depending on the lifestyle of the pathogen or pest. Finally, we predict that closing these gaps in knowledge will lead to the development of novel integrative concepts, precise risk assessment and tailor-made HIGS therapy for plant diseases.
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Affiliation(s)
- Aline Koch
- Institute of Phytomedicine, University of Hohenheim, Otto-Sander-Straße 5, Stuttgart, D-70599, Germany
| | - Michael Wassenegger
- RLP AgroScience, Breitenweg 71, Neustadt, 67435, Germany
- Centre for Organismal Studies, University of Heidelberg, Heidelberg, 69120, Germany
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Mc Namara L, Gauthier K, Walsh L, Thébaud G, Gaffney M, Jacquot E. Management of yellow dwarf disease in Europe in a post-neonicotinoid agriculture. PEST MANAGEMENT SCIENCE 2020; 76:2276-2285. [PMID: 32243081 DOI: 10.1002/ps.5835] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/13/2020] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
Barley/cereal yellow dwarf viruses (YDVs) cause yellow dwarf disease (YDD), which is a continuous risk to cereals production worldwide. These viruses cause leaf yellowing and stunting, resulting in yield reductions of up to 80%. YDVs have been a consistent but low-level problem in European cereal cultivation for the last three decades, mostly due to the availability of several effective insecticides (largely pyrethroids and more recently neonicotinoids) against aphid vectors. However, this has changed recently, with many insecticides being lost, culminating in a recent European Union (EU) regulation prohibiting outdoor use of the neonicotinoid-insecticide compounds. This change is coupled with the growing challenge of insecticide-resistant aphids, the lack of genetic resources against YDVs, and a knowledge deficit around the parameters responsible for the emergence and spread of YDD. This means that economic sustainability of cereal cultivation in several European countries including France and United Kingdom is now again threatened by this aphid-vectored viral disease. In this review, we summarize the current knowledge on the YDV pathosystem, describe management options against YDD, analyse the impacts of the neonicotinoid ban in Europe, and consider future strategies to control YDV. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Louise Mc Namara
- Teagasc, Crop Science Department, Crops, Environment and Land Use Programme, Carlow, Ireland
| | - Kevin Gauthier
- BGPI, INRAE, Cirad, Institut Agro, Univ Montpellier, Montpellier, France
- Bayer CropScience, Lyon, France
| | - Lael Walsh
- Teagasc, Horticultural Development Department, Crops, Environment and Land Use Programme, Dublin, Ireland
- Pentland Centre for Sustainability in Business, Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Gaël Thébaud
- BGPI, INRAE, Cirad, Institut Agro, Univ Montpellier, Montpellier, France
| | - Michael Gaffney
- Teagasc, Horticultural Development Department, Crops, Environment and Land Use Programme, Dublin, Ireland
| | - Emmanuel Jacquot
- BGPI, INRAE, Cirad, Institut Agro, Univ Montpellier, Montpellier, France
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8
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Zhang Y, Wang XX, Tian HG, Zhang ZF, Feng ZJ, Chen ZS, Liu TX. The L-DOPA/Dopamine Pathway Transgenerationally Regulates Cuticular Melanization in the Pea Aphid Acyrthosiphon pisum. Front Cell Dev Biol 2020; 8:311. [PMID: 32432113 PMCID: PMC7214743 DOI: 10.3389/fcell.2020.00311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/08/2020] [Indexed: 11/13/2022] Open
Abstract
Maternal phenotypic regulations between different generations of aphid species help aphids to adapt to environmental challenges. The pea aphid Acyrthosiphon pisum has been used as a biological model for studies on phenotypic regulation for adaptation, and its alternative phenotypes are typically and physiologically based on maternal effects. We have observed an artificially induced and host-related maternal effect that may be a new aspect to consider in maternal regulation studies using A. pisum. Marked phenotypic changes in the cuticular melanization of daughter A. pisum were detected via tyrosine hydroxylase knockdown in the mothers during their period of host plants alternations. This phenotypic change was found to be both remarkable and repeatable. We performed several studies to understand its regulation and concluded that it may be controlled via the dopamine pathway. The downregulation and phenotypes observed were verified and described in detail. Additionally, based on histological and immunofluorescence analyses, the phenotypic changes caused by cuticular dysplasia were physiologically detected. Furthermore, we found that this abnormal development could not be reversed after birth. Transcriptome sequencing confirmed that this abnormal development represents a systemic developmental failure with numerous transcriptional changes, and chemical interventions suggested that transgenerational signals were not transferred through the nervous system. Our data show that transgenerational regulation (maternal effect) was responsible for the melanization failure. The developmental signals were received by the embryos from the mother aphids and were retained after birth. APTH RNAi disrupted the phenotypic determination process. We demonstrate that non-neuronal dopamine regulation plays a crucial role in the transgenerational phenotypic regulation of A. pisum. These results enhance our understanding of phenotyping via maternal regulation in aphids.
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Affiliation(s)
| | | | | | | | | | | | - Tong-Xian Liu
- Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, Northwest A&F University, Xianyang, China
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Jacques S, Reidy-Crofts J, Sperschneider J, Kamphuis LG, Gao LL, Edwards OR, Singh KB. An RNAi supplemented diet as a reverse genetics tool to control bluegreen aphid, a major pest of legumes. Sci Rep 2020; 10:1604. [PMID: 32005880 PMCID: PMC6994723 DOI: 10.1038/s41598-020-58442-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 01/14/2020] [Indexed: 11/25/2022] Open
Abstract
Aphids are important agricultural pests causing major yield losses worldwide. Since aphids can rapidly develop resistance to chemical insecticides there is an urgent need to find alternative aphid pest management strategies. Despite the economic importance of bluegreen aphid (Acyrthosiphon kondoi), very few genetic resources are available to expand our current understanding and help find viable control solutions. An artificial diet is a desirable non-invasive tool to enable the functional characterisation of genes in bluegreen aphid and discover candidate target genes for future use in RNA interference (RNAi) mediated crop protection against aphids. To date no artificial diet has been developed for bluegreen aphid, so we set out to develop a suitable diet by testing and optimising existing diets. Here, we describe an artificial diet for rearing bluegreen aphid and also provide a proof of concept for the supplementation of the diet with RNAi molecules targeting the salivary gland transcript C002 and gap gene hunchback, resulting in bluegreen aphid mortality which has not yet been documented in this species. Managing this pest, for example via RNAi delivery through artificial feeding will be a major improvement to test bluegreen aphid candidate target genes for future pest control and gain significant insights into bluegreen aphid gene function.
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Affiliation(s)
- Silke Jacques
- Centre for Environment and Life Sciences, CSIRO Agriculture and Food, Floreat, WA, 6014, Australia
- Curtin University, Centre for Crop and Disease Management, Bentley, WA, 6102, Australia
| | - Jenny Reidy-Crofts
- Centre for Environment and Life Sciences, CSIRO Agriculture and Food, Floreat, WA, 6014, Australia
| | - Jana Sperschneider
- Biological Data Science Institute, The Australian National University, Canberra, ACT, 2600, Australia
| | - Lars G Kamphuis
- Centre for Environment and Life Sciences, CSIRO Agriculture and Food, Floreat, WA, 6014, Australia
- Curtin University, Centre for Crop and Disease Management, Bentley, WA, 6102, Australia
| | - Ling-Ling Gao
- Centre for Environment and Life Sciences, CSIRO Agriculture and Food, Floreat, WA, 6014, Australia
| | - Owain R Edwards
- Centre for Environment and Life Sciences, CSIRO Land and Water, Floreat, WA, 6014, Australia
| | - Karam B Singh
- Centre for Environment and Life Sciences, CSIRO Agriculture and Food, Floreat, WA, 6014, Australia.
- Curtin University, Centre for Crop and Disease Management, Bentley, WA, 6102, Australia.
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10
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Rauf I, Asif M, Amin I, Naqvi RZ, Umer N, Mansoor S, Jander G. Silencing cathepsin L expression reduces Myzus persicae protein content and the nutritional value as prey for Coccinella septempunctata. INSECT MOLECULAR BIOLOGY 2019; 28:785-797. [PMID: 30980445 DOI: 10.1111/imb.12589] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gut-expressed aphid genes, which may be more easily inhibited by RNA interference (RNAi) constructs, are attractive targets for pest control efforts involving transgenic plants. Here we show that expression of cathepsin L, which encodes a cysteine protease that functions in aphid guts, can be reduced by expression of an RNAi construct in transgenic tobacco. The effectiveness of this approach is demonstrated by up to 80% adult mortality, reduced fecundity, and delayed nymph production of Myzus persicae (green peach aphids) when cathepsin L expression was reduced by plant-mediated RNAi. Consistent with the function of cathepsin L as a gut protease, M. persicae fed on the RNAi plants had a lower protein content in their bodies and excreted more protein and/or free amino acids in their honeydew. Larvae of Coccinella septempunctata (seven-spotted ladybugs) grew more slowly on aphids having reduced cathepsin L expression, suggesting that prey insect nutritive value, and not just direct negative effects of the RNAi construct, needs to be considered when producing transgenic plants for RNAi-mediated pest control.
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Affiliation(s)
- I Rauf
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Punjab, Pakistan
- Pakistan Institute of Engineering & Applied Sciences (PIEAS), Nilore, Islamabad, Pakistan
- Boyce Thompson Institute, Ithaca, NY, USA
| | - M Asif
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Punjab, Pakistan
| | - I Amin
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Punjab, Pakistan
| | - R Z Naqvi
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Punjab, Pakistan
| | - N Umer
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Punjab, Pakistan
- Pakistan Institute of Engineering & Applied Sciences (PIEAS), Nilore, Islamabad, Pakistan
- Boyce Thompson Institute, Ithaca, NY, USA
| | - S Mansoor
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Punjab, Pakistan
| | - G Jander
- Boyce Thompson Institute, Ithaca, NY, USA
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11
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Yang Z, Wu Y. Improved annotation of Lutzomyia longipalpis genome using bioinformatics analysis. PeerJ 2019; 7:e7862. [PMID: 31616601 PMCID: PMC6790103 DOI: 10.7717/peerj.7862] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 09/10/2019] [Indexed: 01/09/2023] Open
Abstract
Lutzomyia longipalpis, a sand fly, is a vector-spreading pathogenic protozoan in the New World. MicroRNA (miRNA) is evolutionarily-conserved non-coding RNA, which plays critical roles in various biological processes. To date, the functions of most proteins in L. longipalpis are unknown, and few studies have addressed the roles of miRNAs in this species. In the present study, we re-annotated the protein-coding genes and identified several miRNAs using a set of comparative genomics tools. A large number of L. longipalpis proteins were found to be homologous with those in the mosquito genome, indicating that they may have experienced similar selective pressures. Among these proteins, a set of 19 putative salivary proteins were identified, which could be used for studying the transmission of Leishmania. Twenty-one novel miRNAs were characterized, including two miRNAs, miR-4113-5p and miR-5101, which are unique to L. longipalpis. Many of the targets of these two genes were found to be involved in ATP hydrolysis-coupled proton transport, suggesting that they may have important roles in the physiology of energy production. Topology analysis of the miRNA-gene network indicated that miR-9388-5p and miR-3871-5p regulate several critical genes in response to disease development. In conclusion, our work provides a basis for improving the genome annotation of L. longipalpis, and opens a new door to understanding the molecular regulatory mechanisms in this species.
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Affiliation(s)
- Zhiyuan Yang
- College of Life Information Science & Instrument Engineering, Hangzhou Dianzi University, Hangzhou, PR China
| | - Ying Wu
- College of Chemical Engineering, Huaqiao University, Xiamen, PR China
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12
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Hou Q, Xu L, Liu G, Pang X, Wang X, Zhang Y, You M, Ni Z, Zhao Z, Liang R. Plant-mediated gene silencing of an essential olfactory-related Gqα gene enhances resistance to grain aphid in common wheat in greenhouse and field. PEST MANAGEMENT SCIENCE 2019; 75:1718-1725. [PMID: 30525312 DOI: 10.1002/ps.5292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 10/26/2018] [Accepted: 12/01/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Grain aphid (Sitobion avenae F.) is a dominant pest that limits cereal crop production around the globe. Gq proteins have important roles in signal transduction in insect olfaction. Plant-mediated RNA interference (RNAi) has been widely studied in insect control, but its application for the control wheat aphid in the field requires further study. Here, we used double-stranded (ds)RNA feeding to verify the potential of selected Gqα fragments for host-mediated RNAi, and then evaluated the effect of RNAi on aphid olfaction in transgenic wheat in the greenhouse and field. RESULTS Gqα gene was expressed in the aphid life cycle, and a 540 bp fragment shared 98.1% similarity with the reported sequence. dsGqα feeding reduced the expression of Gqα, and both reproduction and molting in the grain aphid. Feeding transgenic lines in the greenhouse downregulated expression of aphid Gqα, and significantly reduced reproduction and molting numbers. Furthermore, our field results indicate that transgenic lines have lower aphid numbers and higher 1000-grain weight than an unsprayed wild-type control. CONCLUSION Plant-mediated silencing of an essential olfactory-related Gqα gene could enhance resistance to grain aphid in common wheat in both the greenhouse and the field. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Qiling Hou
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Lanjie Xu
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Guoyu Liu
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Xiaomeng Pang
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Xiao Wang
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Yufeng Zhang
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Mingshan You
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Zhongfu Ni
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Zhangwu Zhao
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
| | - Rongqi Liang
- Key Laboratory of Crop Heterosis and Utilization (MOE)/Beijing Key Laboratory of Crop Genetic Improvement, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
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13
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Sun Y, Sparks C, Jones H, Riley M, Francis F, Du W, Xia L. Silencing an essential gene involved in infestation and digestion in grain aphid through plant-mediated RNA interference generates aphid-resistant wheat plants. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:852-854. [PMID: 30582665 PMCID: PMC6471730 DOI: 10.1111/pbi.13067] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/03/2018] [Accepted: 12/20/2018] [Indexed: 05/08/2023]
Affiliation(s)
- Yongwei Sun
- Institute of Crop SciencesChinese Academy of Agricultural Sciences (CAAS)BeijingChina
- Functional and Evolutionary EntomologyGembloux Agro‐bio TechUniversity of Liege (ULg)GemblouxBelgium
| | | | - Huw Jones
- Institute of Biological, Environmental & Rural Sciences (IBERS)Aberystwyth UniversityAberystwythUK
| | | | - Frédéric Francis
- Functional and Evolutionary EntomologyGembloux Agro‐bio TechUniversity of Liege (ULg)GemblouxBelgium
| | - Wenming Du
- Institute of Crop SciencesChinese Academy of Agricultural Sciences (CAAS)BeijingChina
| | - Lanqin Xia
- Institute of Crop SciencesChinese Academy of Agricultural Sciences (CAAS)BeijingChina
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14
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Qi T, Guo J, Peng H, Liu P, Kang Z, Guo J. Host-Induced Gene Silencing: A Powerful Strategy to Control Diseases of Wheat and Barley. Int J Mol Sci 2019; 20:E206. [PMID: 30626050 PMCID: PMC6337638 DOI: 10.3390/ijms20010206] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 12/31/2018] [Accepted: 01/03/2019] [Indexed: 12/15/2022] Open
Abstract
Wheat and barley are the most highly produced and consumed grains in the world. Various pathogens-viruses, bacteria, fungi, insect pests, and nematode parasites-are major threats to yield and economic losses. Strategies for the management of disease control mainly depend on resistance or tolerance breeding, chemical control, and biological control. The discoveries of RNA silencing mechanisms provide a transgenic approach for disease management. Host-induced gene silencing (HIGS) employing RNA silencing mechanisms and, specifically, silencing the targets of invading pathogens, has been successfully applied in crop disease prevention. Here, we cover recent studies that indicate that HIGS is a valuable tool to protect wheat and barley from diseases in an environmentally friendly way.
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Affiliation(s)
- Tuo Qi
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Jia Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Huan Peng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Peng Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Jun Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
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15
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Albright VC, Wong CR, Hellmich RL, Coats JR. Dissipation of double-stranded RNA in aquatic microcosms. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2017; 36:1249-1253. [PMID: 27731520 DOI: 10.1002/etc.3648] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/19/2016] [Accepted: 10/08/2016] [Indexed: 05/25/2023]
Abstract
Silencing genes of a pest with double-stranded RNA (dsRNA) is a promising new pest management technology. As part of the environmental risk assessment for dsRNA-based products, the environmental fate and the potential for adverse effects to on-target organisms should be characterized. In the present study, a nonbioactive dsRNA was spiked into the water column of a water and sediment microcosm to mimic drift from a spray application run off of unbound dsRNA or transport of plant tissues. Dissipation of dsRNA in the water column and partitioning into sediment was determined. The dsRNA rapidly dissipated in the water column and was below the limit of detection after 96 h. The levels detected in the sediment were not significant and may indicate rapid degradation in the water column prior to partitioning to sediment. Environ Toxicol Chem 2017;36:1249-1253. © 2016 SETAC.
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Affiliation(s)
- Vurtice C Albright
- Pesticide Toxicology Laboratory, Department of Entomology, Iowa State University, Ames, Iowa, USA
| | - Colin R Wong
- Pesticide Toxicology Laboratory, Department of Entomology, Iowa State University, Ames, Iowa, USA
| | - Richard L Hellmich
- Corn Insects and Crop Genetics Research Unit, Agricultural Research Service, US Department of Agriculture, Ames, Iowa, USA
| | - Joel R Coats
- Pesticide Toxicology Laboratory, Department of Entomology, Iowa State University, Ames, Iowa, USA
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16
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Yan T, Chen H, Sun Y, Yu X, Xia L. RNA Interference of the Ecdysone Receptor Genes EcR and USP in Grain Aphid (Sitobion avenae F.) Affects Its Survival and Fecundity upon Feeding on Wheat Plants. Int J Mol Sci 2016; 17:E2098. [PMID: 27983619 PMCID: PMC5187898 DOI: 10.3390/ijms17122098] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 12/05/2016] [Accepted: 12/08/2016] [Indexed: 12/16/2022] Open
Abstract
RNA interference (RNAi) has been widely used in functional genomics of insects and received intensive attention in the development of RNAi-based plants for insect control. Ecdysone receptor (EcR) and ultraspiracle protein (USP) play important roles in molting, metamorphosis, and reproduction of insects. EcR and USP orthologs and their function in grain aphid (Sitobion avenae F.) have not been documented yet. Here, RT-PCR, qRT-PCR, dsRNA feeding assay and aphid bioassay were employed to isolate EcR and USP orthologs in grain aphid, investigate their expression patterns, and evaluate the effect of RNAi on aphid survival and fecundity, and its persistence. The results indicated that SaEcR and SaUSP exhibited similar expression profiles at different developmental stages. Oral administration of dsRNAs of SaEcR and dsSaUSP significantly decreased the survival of aphids due to the down-regulation of these two genes, respectively. The silencing effect was persistent and transgenerational, as demonstrated by the reduced survival and fecundity due to knock-down of SaEcR and SaUSP in both the surviving aphids and their offspring, even after switching to aphid-susceptible wheat plants. Taken together, our results demonstrate that SaEcR and SaUSP are essential genes in aphid growth and development, and could be used as RNAi targets for wheat aphid control.
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Affiliation(s)
- Ting Yan
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China.
| | - Hongmei Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China.
| | - Yongwei Sun
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China.
| | - Xiudao Yu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China.
| | - Lanqin Xia
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China.
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17
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RNA Interference in Insect Vectors for Plant Viruses. Viruses 2016; 8:v8120329. [PMID: 27973446 PMCID: PMC5192390 DOI: 10.3390/v8120329] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 12/05/2016] [Accepted: 12/06/2016] [Indexed: 01/09/2023] Open
Abstract
Insects and other arthropods are the most important vectors of plant pathogens. The majority of plant pathogens are disseminated by arthropod vectors such as aphids, beetles, leafhoppers, planthoppers, thrips and whiteflies. Transmission of plant pathogens and the challenges in managing insect vectors due to insecticide resistance are factors that contribute to major food losses in agriculture. RNA interference (RNAi) was recently suggested as a promising strategy for controlling insect pests, including those that serve as important vectors for plant pathogens. The last decade has witnessed a dramatic increase in the functional analysis of insect genes, especially those whose silencing results in mortality or interference with pathogen transmission. The identification of such candidates poses a major challenge for increasing the role of RNAi in pest control. Another challenge is to understand the RNAi machinery in insect cells and whether components that were identified in other organisms are also present in insect. This review will focus on summarizing success cases in which RNAi was used for silencing genes in insect vector for plant pathogens, and will be particularly helpful for vector biologists.
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18
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Etebari K, Asgari S. Revised annotation of Plutella xylostella microRNAs and their genome-wide target identification. INSECT MOLECULAR BIOLOGY 2016; 25:788-799. [PMID: 27515977 DOI: 10.1111/imb.12263] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The diamondback moth, Plutella xylostella, is the most devastating pest of brassica crops worldwide. Although 128 mature microRNAs (miRNAs) have been annotated from this species in miRBase, there is a need to extend and correct the current P. xylostella miRNA repertoire as a result of its recently improved genome assembly and more available small RNA sequence data. We used our new ultra-deep sequence data and bioinformatics to re-annotate the P. xylostella genome for high confidence miRNAs with the correct 5p and 3p arm features. Furthermore, all the P. xylostella annotated genes were also screened to identify potential miRNA binding sites using three target-predicting algorithms. In total, 203 mature miRNAs were annotated, including 33 novel miRNAs. We identified 7691 highly confident binding sites for 160 pxy-miRNAs. The data provided here will facilitate future studies involving functional analyses of P. xylostella miRNAs as a platform to introduce novel approaches for sustainable management of this destructive pest.
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Affiliation(s)
- K Etebari
- School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - S Asgari
- School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia
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19
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Mulot M, Boissinot S, Monsion B, Rastegar M, Clavijo G, Halter D, Bochet N, Erdinger M, Brault V. Comparative Analysis of RNAi-Based Methods to Down-Regulate Expression of Two Genes Expressed at Different Levels in Myzus persicae. Viruses 2016; 8:E316. [PMID: 27869783 PMCID: PMC5127030 DOI: 10.3390/v8110316] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 11/09/2016] [Accepted: 11/11/2016] [Indexed: 02/06/2023] Open
Abstract
With the increasing availability of aphid genomic data, it is necessary to develop robust functional validation methods to evaluate the role of specific aphid genes. This work represents the first study in which five different techniques, all based on RNA interference and on oral acquisition of double-stranded RNA (dsRNA), were developed to silence two genes, ALY and Eph, potentially involved in polerovirus transmission by aphids. Efficient silencing of only Eph transcripts, which are less abundant than those of ALY, could be achieved by feeding aphids on transgenic Arabidopsis thaliana expressing an RNA hairpin targeting Eph, on Nicotiana benthamiana infected with a Tobacco rattle virus (TRV)-Eph recombinant virus, or on in vitro-synthesized Eph-targeting dsRNA. These experiments showed that the silencing efficiency may differ greatly between genes and that aphid gut cells seem to be preferentially affected by the silencing mechanism after oral acquisition of dsRNA. In addition, the use of plants infected with recombinant TRV proved to be a promising technique to silence aphid genes as it does not require plant transformation. This work highlights the need to pursue development of innovative strategies to reproducibly achieve reduction of expression of aphid genes.
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Affiliation(s)
- Michaël Mulot
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
| | - Sylvaine Boissinot
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
| | - Baptiste Monsion
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
- INRA, UMR BGPI INRA-CIRAD-SupAgro, CIRAD TA-A54/K, Campus International de Baillarguet, 34398 Montpellier, France.
| | - Maryam Rastegar
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
- Plant Protection Department, Shiraz University, Shiraz, Iran.
| | - Gabriel Clavijo
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
| | - David Halter
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
| | - Nicole Bochet
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
| | - Monique Erdinger
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
| | - Véronique Brault
- Université de Strasbourg, INRA, SVQV UMR-A 1131, 28 rue de Herrlisheim, Colmar, 68021 Strasbourg, France.
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20
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Yu XD, Liu ZC, Huang SL, Chen ZQ, Sun YW, Duan PF, Ma YZ, Xia LQ. RNAi-mediated plant protection against aphids. PEST MANAGEMENT SCIENCE 2016; 72:1090-8. [PMID: 26888776 DOI: 10.1002/ps.4258] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 12/21/2015] [Accepted: 02/15/2016] [Indexed: 05/10/2023]
Abstract
Aphids (Aphididae) are major agricultural pests that cause significant yield losses of crop plants each year by inflicting damage both through the direct effects of feeding and by vectoring harmful plant viruses. Expression of double-stranded RNA (dsRNA) directed against suitable insect target genes in transgenic plants has been shown to give protection against pests through plant-mediated RNA interference (RNAi). Thus, as a potential alternative and effective strategy for insect pest management in agricultural practice, plant-mediated RNAi for aphid control has received close attention in recent years. In this review, the mechanism of RNAi in insects and the so far explored effective RNAi target genes in aphids, their potential applications in the development of transgenic plants for aphid control and the major challenges in this regard are reviewed, and the future prospects of using plant-mediated RNAi for aphid control are discussed. This review is intended to be a helpful insight into the generation of aphid-resistant plants through plant-mediated RNAi strategy. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Xiu-Dao Yu
- School of Life Science and Technology, Nanyang Normal University, Nanyang, Henan, China
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zong-Cai Liu
- School of Life Science and Technology, Nanyang Normal University, Nanyang, Henan, China
| | - Si-Liang Huang
- School of Life Science and Technology, Nanyang Normal University, Nanyang, Henan, China
| | - Zhi-Qin Chen
- School of Life Science and Technology, Nanyang Normal University, Nanyang, Henan, China
| | - Yong-Wei Sun
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Peng-Fei Duan
- School of Life Science and Technology, Nanyang Normal University, Nanyang, Henan, China
| | - You-Zhi Ma
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lan-Qin Xia
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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21
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Fishilevich E, Vélez AM, Khajuria C, Frey MLF, Hamm RL, Wang H, Schulenberg GA, Bowling AJ, Pence HE, Gandra P, Arora K, Storer NP, Narva KE, Siegfried BD. Use of chromatin remodeling ATPases as RNAi targets for parental control of western corn rootworm (Diabrotica virgifera virgifera) and Neotropical brown stink bug (Euschistus heros). INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2016; 71:58-71. [PMID: 26873291 DOI: 10.1016/j.ibmb.2016.02.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 02/04/2016] [Accepted: 02/04/2016] [Indexed: 06/05/2023]
Abstract
RNA interference (RNAi) is a gene silencing mechanism that is present in animals and plants and is triggered by double stranded RNA (dsRNA) or small interfering RNA (siRNA), depending on the organism. In the western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), RNAi can be achieved by feeding rootworms dsRNA added to artificial diet or plant tissues transformed to express dsRNA. The effect of RNAi depends on the targeted gene function and can range from an absence of phenotypic response to readily apparent responses, including lethality. Furthermore, RNAi can directly affect individuals that consume dsRNA or the effect may be transferred to the next generation. Our previous work described the potential use of genes involved in embryonic development as a parental RNAi technology for the control of WCR. In this study, we describe the use of chromatin-remodeling ATPases as target genes to achieve parental gene silencing in two insect pests, a coleopteran, WCR, and a hemipteran, the Neotropical brown stink bug, Euschistus heros Fabricius (Hemiptera: Pentatomidae). Our results show that dsRNA targeting chromatin-remodeling ATPase transcripts, brahma, mi-2, and iswi strongly reduced the fecundity of the exposed females in both insect species. Additionally, knockdown of chd1 reduced the fecundity of E. heros.
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Affiliation(s)
- Elane Fishilevich
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Ana M Vélez
- University of Nebraska, Department of Entomology, 103 Entomology Hall, Lincoln, NE 68583-0816, United States
| | - Chitvan Khajuria
- University of Nebraska, Department of Entomology, 103 Entomology Hall, Lincoln, NE 68583-0816, United States
| | - Meghan L F Frey
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Ronda L Hamm
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Haichuan Wang
- University of Nebraska, Department of Entomology, 103 Entomology Hall, Lincoln, NE 68583-0816, United States
| | | | - Andrew J Bowling
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Heather E Pence
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Premchand Gandra
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Kanika Arora
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Nicholas P Storer
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Kenneth E Narva
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN, United States
| | - Blair D Siegfried
- Entomology and Nematology Department, Charles Steinmetz Hall, University of Florida, P.O. Box 110620, Gainesville, FL 32611-0620, United States.
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