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Gentzel IN, Paul P, Wang GL, Ohlson EW. Effects of Maize Chlorotic Mottle Virus and Potyvirus Resistance on Maize Lethal Necrosis Disease. PHYTOPATHOLOGY 2024; 114:484-495. [PMID: 38408034 DOI: 10.1094/phyto-05-23-0171-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Maize lethal necrosis (MLN) is a viral disease caused by host co-infection by maize chlorotic mottle virus (MCMV) and a potyvirus, such as sugarcane mosaic virus (SCMV). The disease is most effectively managed by growing MLN-resistant varieties. However, the relative importance of MCMV and potyvirus resistance in managing this synergistic disease is poorly characterized. In this study, we evaluated the effects of SCMV and/or MCMV resistance on disease, virus titers, and synergism and explored expression patterns of known potyvirus resistance genes TrxH and ABP1. MLN disease was significantly lower in both the MCMV-resistant and SCMV-resistant inbred lines compared with the susceptible control Oh28. Prior to 14 days postinoculation (dpi), MCMV titers in resistant lines N211 and KS23-6 were more than 100,000-fold lower than found in the susceptible Oh28. However, despite no visible symptoms, titer differences between MCMV-resistant and -susceptible lines were negligible by 14 dpi. In contrast, systemic SCMV titers in the potyvirus-resistant line, Pa405, ranged from 130,000-fold to 2 million-fold lower than susceptible Oh28 as disease progressed. Initial TrxH expression was up to 49,000-fold lower in Oh28 compared with other genotypes, whereas expression of ABP1 was up to 4.5-fold lower. Measures of virus synergy indicate that whereas MCMV resistance is effective in early infection, strong potyvirus resistance is critical for reducing synergist effects of co-infection on MCMV titer. These results emphasize the importance of both potyvirus resistance and MCMV resistance in an effective breeding program for MLN management.
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Affiliation(s)
- Irene N Gentzel
- Department of Plant Pathology, The Ohio State University, Wooster, OH 44691
| | - Pierce Paul
- Department of Plant Pathology, The Ohio State University, Wooster, OH 44691
| | - Guo-Liang Wang
- Department of Plant Pathology, The Ohio State University, Columbus, OH 43210
| | - Erik W Ohlson
- Corn, Soybean, and Wheat Quality Research Unit, U.S. Department of Agriculture-Agricultural Research Service, Wooster, OH 44691
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Johnmark O, Indieka S, Liu G, Gowda M, Suresh LM, Zhang W, Gao X. Fighting Death for Living: Recent Advances in Molecular and Genetic Mechanisms Underlying Maize Lethal Necrosis Disease Resistance. Viruses 2022; 14:v14122765. [PMID: 36560769 PMCID: PMC9784999 DOI: 10.3390/v14122765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Maize Lethal Necrosis (MLN) disease, caused by a synergistic co-infection of maize chlorotic mottle virus (MCMV) and any member of the Potyviridae family, was first reported in EasternAfrica (EA) a decade ago. It is one of the most devastating threats to maize production in these regions since it can lead up to 100% crop loss. Conventional counter-measures have yielded some success; however, they are becoming less effective in controlling MLN. In EA, the focus has been on the screening and identification of resistant germplasm, dissecting genetic and the molecular basis of the disease resistance, as well as employing modern breeding technologies to develop novel varieties with improved resistance. CIMMYT and scientists from NARS partner organizations have made tremendous progresses in the screening and identification of the MLN-resistant germplasm. Quantitative trait loci mapping and genome-wide association studies using diverse, yet large, populations and lines were conducted. These remarkable efforts have yielded notable outcomes, such as the successful identification of elite resistant donor lines KS23-5 and KS23-6 and their use in breeding, as well as the identification of multiple MLN-tolerance promising loci clustering on Chr 3 and Chr 6. Furthermore, with marker-assisted selection and genomic selection, the above-identified germplasms and loci have been incorporated into elite maize lines in a maize breeding program, thus generating novel varieties with improved MLN resistance levels. However, the underlying molecular mechanisms for MLN resistance require further elucidation. Due to third generation sequencing technologies as well functional genomics tools such as genome-editing and DH technology, it is expected that the breeding time for MLN resistance in farmer-preferred maize varieties in EA will be efficient and shortened.
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Affiliation(s)
- Onyino Johnmark
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- China and Kenya Belt and Road Joint Laboratory on Crop Molecular Biology, Nanjing Agricultural University, Nanjing 210095, China
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, Nanjing Agricultural University, Nanjing 210095, China
- College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
- Biochemistry and Molecular Biology Department, Egerton University, Njoro P.O. Box 536-20115, Kenya
| | - Stephen Indieka
- Biochemistry and Molecular Biology Department, Egerton University, Njoro P.O. Box 536-20115, Kenya
| | - Gaoqiong Liu
- Crops Soils and Horticulture Department, Egerton University, Njoro P.O. Box 536-20115, Kenya
| | - Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, Kenya
| | - L. M. Suresh
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, Kenya
| | - Wenli Zhang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- China and Kenya Belt and Road Joint Laboratory on Crop Molecular Biology, Nanjing Agricultural University, Nanjing 210095, China
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, Nanjing Agricultural University, Nanjing 210095, China
- College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiquan Gao
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- China and Kenya Belt and Road Joint Laboratory on Crop Molecular Biology, Nanjing Agricultural University, Nanjing 210095, China
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, Nanjing Agricultural University, Nanjing 210095, China
- College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
- Correspondence:
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Biswal AK, Alakonya AE, Mottaleb KA, Hearne SJ, Sonder K, Molnar TL, Jones AM, Pixley KV, Prasanna BM. Maize Lethal Necrosis disease: review of molecular and genetic resistance mechanisms, socio-economic impacts, and mitigation strategies in sub-Saharan Africa. BMC PLANT BIOLOGY 2022; 22:542. [PMID: 36418954 PMCID: PMC9686106 DOI: 10.1186/s12870-022-03932-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Maize lethal necrosis (MLN) disease is a significant constraint for maize producers in sub-Saharan Africa (SSA). The disease decimates the maize crop, in some cases, causing total crop failure with far-reaching impacts on regional food security. RESULTS In this review, we analyze the impacts of MLN in Africa, finding that resource-poor farmers and consumers are the most vulnerable populations. We examine the molecular mechanism of MLN virus transmission, role of vectors and host plant resistance identifying a range of potential opportunities for genetic and phytosanitary interventions to control MLN. We discuss the likely exacerbating effects of climate change on the MLN menace and describe a sobering example of negative genetic association between tolerance to heat/drought and susceptibility to viral infection. We also review role of microRNAs in host plant response to MLN causing viruses as well as heat/drought stress that can be carefully engineered to develop resistant varieties using novel molecular techniques. CONCLUSIONS With the dual drivers of increased crop loss due to MLN and increased demand of maize for food, the development and deployment of simple and safe technologies, like resistant cultivars developed through accelerated breeding or emerging gene editing technologies, will have substantial positive impact on livelihoods in the region. We have summarized the available genetic resources and identified a few large-effect QTLs that can be further exploited to accelerate conversion of existing farmer-preferred varieties into resistant cultivars.
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Affiliation(s)
- Akshaya Kumar Biswal
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico.
| | - Amos Emitati Alakonya
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Khondokar Abdul Mottaleb
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Sarah J Hearne
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | - Kai Sonder
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
| | | | - Alan M Jones
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Kevin Vail Pixley
- International Maize and Wheat Improvement Center (CIMMYT), Km. 45, Carretera Mexico-Veracruz, El Batan, Texcoco, C.P. 56237, Mexico
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Murithi A, Olsen MS, Kwemoi DB, Veronica O, Ertiro BT, L M S, Beyene Y, Das B, Prasanna BM, Gowda M. Discovery and Validation of a Recessively Inherited Major-Effect QTL Conferring Resistance to Maize Lethal Necrosis (MLN) Disease. Front Genet 2021; 12:767883. [PMID: 34868253 PMCID: PMC8640137 DOI: 10.3389/fgene.2021.767883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/26/2021] [Indexed: 11/13/2022] Open
Abstract
Maize lethal necrosis (MLN) is a viral disease with a devastating effect on maize production. Developing and deploying improved varieties with resistance to the disease is important to effectively control MLN; however, little is known about the causal genes and molecular mechanism(s) underlying MLN resistance. Screening thousands of maize inbred lines revealed KS23-5 and KS23-6 as two of the most promising donors of MLN resistance alleles. KS23-5 and KS23-6 lines were earlier developed at the University of Hawaii, United States, on the basis of a source population constituted using germplasm from Kasetsart University, Thailand. Both linkage mapping and association mapping approaches were used to discover and validate genomic regions associated with MLN resistance. Selective genotyping of resistant and susceptible individuals within large F2 populations coupled with genome-wide association study identified a major-effect QTL (qMLN06_157) on chromosome 6 for MLN disease severity score and area under the disease progress curve values in all three F2 populations involving one of the KS23 lines as a parent. The major-effect QTL (qMLN06_157) is recessively inherited and explained 55%-70% of the phenotypic variation with an approximately 6 Mb confidence interval. Linkage mapping in three F3 populations and three F2 populations involving KS23-5 or KS23-6 as one of the parents confirmed the presence of this major-effect QTL on chromosome 6, demonstrating the efficacy of the KS23 allele at qMLN06.157 in varying populations. This QTL could not be identified in population that was not derived using KS23 lines. Validation of this QTL in six F2 populations with 20 SNPs closely linked with qMLN06.157 was further confirmed its consistent expression across populations and its recessive nature of inheritance. On the basis of the consistent and effective resistance afforded by the KS23 allele at qMLN06.157, the QTL can be used in both marker-assisted forward breeding and marker-assisted backcrossing schemes to improve MLN resistance of breeding populations and key lines for eastern Africa.
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Affiliation(s)
- Ann Murithi
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya.,Department of Plant Science and Crop Protection, University of Nairobi, Nairobi, Kenya
| | - Michael S Olsen
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Daniel B Kwemoi
- National Crops Resources Research Institute (NaCRRI), Namulonge, Uganda
| | - Ogugo Veronica
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | | | - Suresh L M
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Biswanath Das
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | | | - Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
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Carino EJ, Scheets K, Miller WA. The RNA of Maize Chlorotic Mottle Virus, an Obligatory Component of Maize Lethal Necrosis Disease, Is Translated via a Variant Panicum Mosaic Virus-Like Cap-Independent Translation Element. J Virol 2020; 94:e01005-20. [PMID: 32847851 PMCID: PMC7592216 DOI: 10.1128/jvi.01005-20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 07/30/2020] [Indexed: 11/29/2022] Open
Abstract
Maize chlorotic mottle virus (MCMV) combines with a potyvirus in maize lethal necrosis disease (MLND), a serious emerging disease worldwide. To inform resistance strategies, we characterized the translation initiation mechanism of MCMV. We report that MCMV RNA contains a cap-independent translation element (CITE) in its 3' untranslated region (UTR). The MCMV 3' CITE (MTE) was mapped to nucleotides 4164 to 4333 in the genomic RNA. 2'-Hydroxyl acylation analyzed by primer extension (SHAPE) probing revealed that the MTE is a distinct variant of the panicum mosaic virus-like 3' CITE (PTE). Like the PTE, electrophoretic mobility shift assays (EMSAs) indicated that eukaryotic translation initiation factor 4E (eIF4E) binds the MTE despite the absence of an m7GpppN cap structure, which is normally required for eIF4E to bind RNA. Using a luciferase reporter system, mutagenesis to disrupt and restore base pairing revealed that the MTE interacts with the 5' UTRs of both genomic RNA and subgenomic RNA1 via long-distance kissing stem-loop interaction to facilitate translation. The MTE stimulates a relatively low level of translation and has a weak, if any, pseudoknot, which is present in the most active PTEs, mainly because the MTE lacks the pyrimidine-rich tract that base pairs to a G-rich bulge to form the pseudoknot. However, most mutations designed to form a pseudoknot decreased translation activity. Mutations in the viral genome that reduced or restored translation prevented and restored virus replication, respectively, in maize protoplasts and in plants. In summary, the MTE differs from the canonical PTE but falls into a structurally related class of 3' CITEs.IMPORTANCE In the past decade, maize lethal necrosis disease has caused massive crop losses in East Africa. It has also emerged in China and parts of South America. Maize chlorotic mottle virus (MCMV) infection is required for this disease. While some tolerant maize lines have been identified, there are no known resistance genes that confer immunity to MCMV. In order to improve resistance strategies against MCMV, we focused on how the MCMV genome is translated, the first step of gene expression by all positive-strand RNA viruses. We identified a structure (cap-independent translation element) in the 3' untranslated region of the viral RNA genome that allows the virus to usurp a host translation initiation factor, eIF4E, in a way that differs from host mRNA interactions with the translational machinery. This difference indicates eIF4E may be a soft target for engineering of-or breeding for-resistance to MCMV.
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Affiliation(s)
- Elizabeth J Carino
- Department of Plant Pathology and Microbiology, Iowa State University, Ames, Iowa, USA
- Interdepartmental Genetics and Genomics Program, Iowa State University, Ames, Iowa, USA
| | - Kay Scheets
- Department of Plant Biology, Ecology and Evolution, Oklahoma State University, Stillwater, Oklahoma, USA
| | - W Allen Miller
- Department of Plant Pathology and Microbiology, Iowa State University, Ames, Iowa, USA
- Interdepartmental Genetics and Genomics Program, Iowa State University, Ames, Iowa, USA
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Boddupalli P, Suresh LM, Mwatuni F, Beyene Y, Makumbi D, Gowda M, Olsen M, Hodson D, Worku M, Mezzalama M, Molnar T, Dhugga KS, Wangai A, Gichuru L, Angwenyi S, Alemayehu Y, Grønbech Hansen J, Lassen P. Maize lethal necrosis (MLN): Efforts toward containing the spread and impact of a devastating transboundary disease in sub-Saharan Africa. Virus Res 2020; 282:197943. [PMID: 32205142 PMCID: PMC7221342 DOI: 10.1016/j.virusres.2020.197943] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/12/2020] [Accepted: 03/19/2020] [Indexed: 11/27/2022]
Abstract
Maize lethal necrosis (MLN), a complex viral disease, emerged as a serious threat to maize production and the livelihoods of smallholders in eastern Africa since 2011, primarily due to the introduction of maize chlorotic mottle virus (MCMV). The International Maize and Wheat Improvement Center (CIMMYT), in close partnership with national and international partners, implemented a multi-disciplinary and multi-institutional strategy to curb the spread of MLN in sub-Saharan Africa, and mitigate the impact of the disease. The strategy revolved around a) intensive germplasm screening and fast-tracked development and deployment of MLN-tolerant/resistant maize hybrids in Africa-adapted genetic backgrounds; b) optimizing the diagnostic protocols for MLN-causing viruses, especially MCMV, and capacity building of relevant public and private sector institutions on MLN diagnostics and management; c) MLN monitoring and surveillance across sub-Saharan Africa in collaboration with national plant protection organizations (NPPOs); d) partnership with the private seed sector for production and exchange of MLN pathogen-free commercial maize seed; and e) awareness creation among relevant stakeholders about MLN management, including engagement with policy makers. The review concludes by highlighting the need to keep continuous vigil against MLN-causing viruses, and preventing any further spread of the disease to the major maize-growing countries that have not yet reported MLN in sub-Saharan Africa.
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Affiliation(s)
- Prasanna Boddupalli
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya.
| | - L M Suresh
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya
| | - Francis Mwatuni
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya
| | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya
| | - Dan Makumbi
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya
| | - Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya
| | - Mike Olsen
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya
| | - David Hodson
- CIMMYT, Km 45 México-Veracruz, El Batán, 56237, Texcoco, Mexico CDMX, Mexico
| | - Mosisa Worku
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, Nairobi, Kenya
| | - Monica Mezzalama
- CIMMYT, Km 45 México-Veracruz, El Batán, 56237, Texcoco, Mexico CDMX, Mexico
| | - Terence Molnar
- CIMMYT, Km 45 México-Veracruz, El Batán, 56237, Texcoco, Mexico CDMX, Mexico
| | - Kanwarpal S Dhugga
- CIMMYT, Km 45 México-Veracruz, El Batán, 56237, Texcoco, Mexico CDMX, Mexico
| | - Anne Wangai
- Kenya Agricultural and Livestock Research Organization (KALRO), NARL, Waiyaki Way, Nairobi, Kenya
| | - Lilian Gichuru
- Alliance for Green Revolution in Africa (AGRA), West End Towers, 4th Floor Kanjata Road, off Muthangari Drive, Off Waiyaki Way, P.O. Box 66773, Westlands, 00800, Nairobi, Kenya
| | - Samuel Angwenyi
- African Agricultural Technology Foundation (AATF), ILRI Campus, Naivasha Road, Nairobi, Kenya
| | | | - Jens Grønbech Hansen
- Dept. of Agroecology, Aarhus University, Blichers Allé 20, Postboks 50, DK-8830, Tjele, Denmark
| | - Poul Lassen
- Dept. of Agroecology, Aarhus University, Blichers Allé 20, Postboks 50, DK-8830, Tjele, Denmark
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Genetic Analysis of QTL for Resistance to Maize Lethal Necrosis in Multiple Mapping Populations. Genes (Basel) 2019; 11:genes11010032. [PMID: 31888105 PMCID: PMC7017159 DOI: 10.3390/genes11010032] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 12/17/2019] [Accepted: 12/24/2019] [Indexed: 11/17/2022] Open
Abstract
Maize lethal necrosis (MLN) occurs when maize chlorotic mottle virus (MCMV) and sugarcane mosaic virus (SCMV) co-infect maize plant. Yield loss of up to 100% can be experienced under severe infections. Identification and validation of genomic regions and their flanking markers can facilitate marker assisted breeding for resistance to MLN. To understand the status of previously identified quantitative trait loci (QTL)in diverse genetic background, F3 progenies derived from seven bi-parental populations were genotyped using 500 selected kompetitive allele specific PCR (KASP) SNPs. The F3 progenies were evaluated under artificial MLN inoculation for three seasons. Phenotypic analyses revealed significant variability (P ≤ 0.01) among genotypes for responses to MLN infections, with high heritability estimates (0.62 to 0.82) for MLN disease severity and AUDPC values. Linkage mapping and joint linkage association mapping revealed at least seven major QTL (qMLN3_130 and qMLN3_142, qMLN5_190 and qMLN5_202, qMLN6_85 and qMLN6_157 qMLN8_10 and qMLN9_142) spread across the 7-biparetal populations, for resistance to MLN infections and were consistent with those reported previously. The seven QTL appeared to be stable across genetic backgrounds and across environments. Therefore, these QTL could be useful for marker assisted breeding for resistance to MLN.
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Sitonik C, Suresh LM, Beyene Y, Olsen MS, Makumbi D, Oliver K, Das B, Bright JM, Mugo S, Crossa J, Tarekegne A, Prasanna BM, Gowda M. Genetic architecture of maize chlorotic mottle virus and maize lethal necrosis through GWAS, linkage analysis and genomic prediction in tropical maize germplasm. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:2381-2399. [PMID: 31098757 PMCID: PMC6647133 DOI: 10.1007/s00122-019-03360-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 05/08/2019] [Indexed: 05/21/2023]
Abstract
KEY MESSAGE Analysis of the genetic architecture of MCMV and MLN resistance in maize doubled-haploid populations revealed QTLs with major effects on chromosomes 3 and 6 that were consistent across genetic backgrounds and environments. Two major-effect QTLs, qMCMV3-108/qMLN3-108 and qMCMV6-17/qMLN6-17, were identified as conferring resistance to both MCMV and MLN. Maize lethal necrosis (MLN) is a serious threat to the food security of maize-growing smallholders in sub-Saharan Africa. The ability of the maize chlorotic mottle virus (MCMV) to interact with other members of the Potyviridae causes severe yield losses in the form of MLN. The objective of the present study was to gain insights and validate the genetic architecture of resistance to MCMV and MLN in maize. We applied linkage mapping to three doubled-haploid populations and a genome-wide association study (GWAS) on 380 diverse maize lines. For all the populations, phenotypic variation for MCMV and MLN was significant, and heritability was moderate to high. Linkage mapping revealed 13 quantitative trait loci (QTLs) for MCMV resistance and 12 QTLs conferring MLN resistance. One major-effect QTL, qMCMV3-108/qMLN3-108, was consistent across populations for both MCMV and MLN resistance. Joint linkage association mapping (JLAM) revealed 18 and 21 main-effect QTLs for MCMV and MLN resistance, respectively. Another major-effect QTL, qMCMV6-17/qMLN6-17, was detected for both MCMV and MLN resistance. The GWAS revealed a total of 54 SNPs (MCMV-13 and MLN-41) significantly associated (P ≤ 5.60 × 10-05) with MCMV and MLN resistance. Most of the GWAS-identified SNPs were within or adjacent to the QTLs detected through linkage mapping. The prediction accuracy for within populations as well as the combined populations is promising; however, the accuracy was low across populations. Overall, MCMV resistance is controlled by a few major and many minor-effect loci and seems more complex than the genetic architecture for MLN resistance.
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Affiliation(s)
- Chelang'at Sitonik
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
- Department of Plant Breeding and Biotechnology, University of Eldoret (UoE), P.O. Box 1125, Eldoret, 30100, Kenya
| | - L M Suresh
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
| | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
| | - Michael S Olsen
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
| | - Dan Makumbi
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
| | - Kiplagat Oliver
- Department of Plant Breeding and Biotechnology, University of Eldoret (UoE), P.O. Box 1125, Eldoret, 30100, Kenya
| | - Biswanath Das
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
| | - Jumbo M Bright
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
| | - Stephen Mugo
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya
| | - Jose Crossa
- International Maize and Wheat Improvement Center (CIMMYT), El Batan, Texcoco, DF, Mexico
| | - Amsal Tarekegne
- International Maize and Wheat Improvement Center (CIMMYT), 12.5 km Peg Mazowe Road, Mount Pleasant, P.O. Box MP163, Harare, Zimbabwe
| | - Boddupalli M Prasanna
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya.
| | - Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 1041-00621, Village Market, Nairobi, 00621, Kenya.
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9
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Kannan M, Ismail I, Bunawan H. Maize Dwarf Mosaic Virus: From Genome to Disease Management. Viruses 2018; 10:E492. [PMID: 30217014 PMCID: PMC6164272 DOI: 10.3390/v10090492] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/22/2018] [Accepted: 08/28/2018] [Indexed: 12/29/2022] Open
Abstract
Maize dwarf mosaic virus (MDMV) is a serious maize pathogen, epidemic worldwide, and one of the most common virus diseases for monocotyledonous plants, causing up to 70% loss in corn yield globally since 1960. MDMV belongs to the genus Potyvirus (Potyviridae) and was first identified in 1964 in Illinois in corn and Johnsongrass. MDMV is a single stranded positive sense RNA virus and is transmitted in a non-persistent manner by several aphid species. MDMV is amongst the most important virus diseases in maize worldwide. This review will discuss its genome, transmission, symptomatology, diagnosis and management. Particular emphasis will be given to the current state of knowledge on the diagnosis and control of MDMV, due to its importance in reducing the impact of maize dwarf mosaic disease, to produce an enhanced quality and quantity of maize.
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Affiliation(s)
- Maathavi Kannan
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia.
| | - Ismanizan Ismail
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia.
- School of Bioscience and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia.
| | - Hamidun Bunawan
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia.
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Jones MW, Penning BW, Jamann TM, Glaubitz JC, Romay C, Buckler ES, Redinbaugh MG. Diverse Chromosomal Locations of Quantitative Trait Loci for Tolerance to Maize chlorotic mottle virus in Five Maize Populations. PHYTOPATHOLOGY 2018; 108:748-758. [PMID: 29287150 DOI: 10.1094/phyto-09-17-0321-r] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The recent rapid emergence of maize lethal necrosis (MLN), caused by coinfection of maize with Maize chlorotic mottle virus (MCMV) and a second virus usually from the family Potyviridae, is causing extensive losses for farmers in East Africa, Southeast Asia, and South America. Although the genetic basis of resistance to potyviruses is well understood in maize, little was known about resistance to MCMV. The responses of five maize inbred lines (KS23-5, KS23-6, N211, DR, and Oh1VI) to inoculation with MCMV, Sugarcane mosaic virus, and MLN were characterized. All five lines developed fewer symptoms than susceptible controls after inoculation with MCMV; however, the virus was detected in systemic leaf tissue from each of the lines similarly to susceptible controls, indicating that the lines were tolerant of MCMV rather than resistant to it. Except for KS23-5, the inbred lines also developed fewer symptoms after inoculation with MLN than susceptible controls. To identify genetic loci associated with MCMV tolerance, large F2 or recombinant inbred populations were evaluated for their phenotypic responses to MCMV, and the most resistant and susceptible plants were genotyped by sequencing. One to four quantitative trait loci (QTL) were identified in each tolerant population using recombination frequency and positional mapping strategies. In contrast to previous studies of virus resistance in maize, the chromosomal positions and genetic character of the QTL were unique to each population. The results suggest that different, genotype-specific mechanisms are associated with MCMV tolerance in maize. These results will allow for the development of markers for marker-assisted selection of MCMV- and MLN-tolerant maize hybrids for disease control.
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Affiliation(s)
- Mark W Jones
- First, second, and seventh authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Corn, Soybean and Wheat Quality Research Unit, Wooster, OH 44691; third author: Department of Crop Sciences, University of Illinois, Urbana 61801; fourth and fifth authors: Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853; sixth author: USDA-ARS Plant, Soil and Nutrition Research and Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853; and seventh author: Department of Plant Pathology, Ohio State University, Wooster 44691
| | - Bryan W Penning
- First, second, and seventh authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Corn, Soybean and Wheat Quality Research Unit, Wooster, OH 44691; third author: Department of Crop Sciences, University of Illinois, Urbana 61801; fourth and fifth authors: Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853; sixth author: USDA-ARS Plant, Soil and Nutrition Research and Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853; and seventh author: Department of Plant Pathology, Ohio State University, Wooster 44691
| | - Tiffany M Jamann
- First, second, and seventh authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Corn, Soybean and Wheat Quality Research Unit, Wooster, OH 44691; third author: Department of Crop Sciences, University of Illinois, Urbana 61801; fourth and fifth authors: Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853; sixth author: USDA-ARS Plant, Soil and Nutrition Research and Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853; and seventh author: Department of Plant Pathology, Ohio State University, Wooster 44691
| | - Jeff C Glaubitz
- First, second, and seventh authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Corn, Soybean and Wheat Quality Research Unit, Wooster, OH 44691; third author: Department of Crop Sciences, University of Illinois, Urbana 61801; fourth and fifth authors: Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853; sixth author: USDA-ARS Plant, Soil and Nutrition Research and Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853; and seventh author: Department of Plant Pathology, Ohio State University, Wooster 44691
| | - Cinta Romay
- First, second, and seventh authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Corn, Soybean and Wheat Quality Research Unit, Wooster, OH 44691; third author: Department of Crop Sciences, University of Illinois, Urbana 61801; fourth and fifth authors: Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853; sixth author: USDA-ARS Plant, Soil and Nutrition Research and Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853; and seventh author: Department of Plant Pathology, Ohio State University, Wooster 44691
| | - Edward S Buckler
- First, second, and seventh authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Corn, Soybean and Wheat Quality Research Unit, Wooster, OH 44691; third author: Department of Crop Sciences, University of Illinois, Urbana 61801; fourth and fifth authors: Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853; sixth author: USDA-ARS Plant, Soil and Nutrition Research and Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853; and seventh author: Department of Plant Pathology, Ohio State University, Wooster 44691
| | - Margaret G Redinbaugh
- First, second, and seventh authors: United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Corn, Soybean and Wheat Quality Research Unit, Wooster, OH 44691; third author: Department of Crop Sciences, University of Illinois, Urbana 61801; fourth and fifth authors: Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853; sixth author: USDA-ARS Plant, Soil and Nutrition Research and Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853; and seventh author: Department of Plant Pathology, Ohio State University, Wooster 44691
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11
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Wamaitha MJ, Nigam D, Maina S, Stomeo F, Wangai A, Njuguna JN, Holton TA, Wanjala BW, Wamalwa M, Lucas T, Djikeng A, Garcia-Ruiz H. Metagenomic analysis of viruses associated with maize lethal necrosis in Kenya. Virol J 2018; 15:90. [PMID: 29792207 PMCID: PMC5966901 DOI: 10.1186/s12985-018-0999-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/07/2018] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Maize lethal necrosis is caused by a synergistic co-infection of Maize chlorotic mottle virus (MCMV) and a specific member of the Potyviridae, such as Sugarcane mosaic virus (SCMV), Wheat streak mosaic virus (WSMV) or Johnson grass mosaic virus (JGMV). Typical maize lethal necrosis symptoms include severe yellowing and leaf drying from the edges. In Kenya, we detected plants showing typical and atypical symptoms. Both groups of plants often tested negative for SCMV by ELISA. METHODS We used next-generation sequencing to identify viruses associated to maize lethal necrosis in Kenya through a metagenomics analysis. Symptomatic and asymptomatic leaf samples were collected from maize and sorghum representing sixteen counties. RESULTS Complete and partial genomes were assembled for MCMV, SCMV, Maize streak virus (MSV) and Maize yellow dwarf virus-RMV (MYDV-RMV). These four viruses (MCMV, SCMV, MSV and MYDV-RMV) were found together in 30 of 68 samples. A geographic analysis showed that these viruses are widely distributed in Kenya. Phylogenetic analyses of nucleotide sequences showed that MCMV, MYDV-RMV and MSV are similar to isolates from East Africa and other parts of the world. Single nucleotide polymorphism, nucleotide and polyprotein sequence alignments identified three genetically distinct groups of SCMV in Kenya. Variation mapped to sequences at the border of NIb and the coat protein. Partial genome sequences were obtained for other four potyviruses and one polerovirus. CONCLUSION Our results uncover the complexity of the maize lethal necrosis epidemic in Kenya. MCMV, SCMV, MSV and MYDV-RMV are widely distributed and infect both maize and sorghum. SCMV population in Kenya is diverse and consists of numerous strains that are genetically different to isolates from other parts of the world. Several potyviruses, and possibly poleroviruses, are also involved.
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Affiliation(s)
- Mwathi Jane Wamaitha
- Kenya Agricultural and Livestock Research Organization (KALRO), P. O. Box 14733-00800, Nairobi, Kenya
| | - Deepti Nigam
- Department of Plant Pathology and Nebraska Center for Virology, University of Nebraska- Lincoln, Lincoln, NE 68583 USA
| | - Solomon Maina
- School of Agriculture and Environment and UWA Institute of Agriculture, Faculty of Science, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
- Cooperative Research Centre for Plant Biosecurity, Canberra, ACT 2617 Australia
| | - Francesca Stomeo
- Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI), Hub, Nairobi, Kenya
| | - Anne Wangai
- Kenya Agricultural and Livestock Research Organization (KALRO), P. O. Box 14733-00800, Nairobi, Kenya
| | - Joyce Njoki Njuguna
- Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI), Hub, Nairobi, Kenya
| | - Timothy A. Holton
- Plant Innovation Centre, Post-Entry Quarantine, Department of Agriculture and Water Resources, 135 Donnybrook Road, Mickleham, VIC 3064 Australia
| | - Bramwel W. Wanjala
- Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI), Hub, Nairobi, Kenya
| | - Mark Wamalwa
- Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI), Hub, Nairobi, Kenya
| | - Tanui Lucas
- Kenya Agricultural and Livestock Research Organization (KALRO), P. O. Box 14733-00800, Nairobi, Kenya
| | - Appolinaire Djikeng
- Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI), Hub, Nairobi, Kenya
- Centre for Tropical Livestock Genetics and Health (CTLGH), The University of Edinburgh, Edinburgh, Scotland EH25 9RG UK
| | - Hernan Garcia-Ruiz
- Department of Plant Pathology and Nebraska Center for Virology, University of Nebraska- Lincoln, Lincoln, NE 68583 USA
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12
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Jarugula S, Willie K, Stewart LR. Barley stripe mosaic virus (BSMV) as a virus-induced gene silencing vector in maize seedlings. Virus Genes 2018; 54:616-620. [PMID: 29752616 DOI: 10.1007/s11262-018-1569-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/04/2018] [Indexed: 01/11/2023]
Abstract
Barley stripe mosaic virus (BSMV) was the first reported and still widely used virus-induced gene silencing (VIGS) vector for monocotyledons including wheat and barley. Despite BSMV's reported infectivity on maize (Zea mays), the use of the virus as a vector in maize has not been optimized. Here, we assayed infectivity of BSMV in different maize cultivars by vascular puncture inoculation. Through knockdown of the endogenous host phytoene desaturase gene, we demonstrate for the first time that BSMV can be used as a VIGS vector in maize. This adds BSMV to the repertoire of tools available for functional studies in maize.
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Affiliation(s)
- Sridhar Jarugula
- Center for Applied Plant Sciences, Ohio State University, 1680 Madison Ave, Wooster, OH, 44691, USA.,Department of Plant Pathology, Washington State University, Irrigated Agriculture Research and Extension center, 24106 N. Bunn Rd, Prosser, WA, USA
| | - Kristen Willie
- Corn, Soybean, and Wheat Quality Research Unit, USDA-ARS, 1680 Madison Ave, Wooster, OH, USA
| | - Lucy R Stewart
- Center for Applied Plant Sciences, Ohio State University, 1680 Madison Ave, Wooster, OH, 44691, USA. .,Corn, Soybean, and Wheat Quality Research Unit, USDA-ARS, 1680 Madison Ave, Wooster, OH, USA.
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13
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Gowda M, Beyene Y, Makumbi D, Semagn K, Olsen MS, Bright JM, Das B, Mugo S, Suresh LM, Prasanna BM. Discovery and validation of genomic regions associated with resistance to maize lethal necrosis in four biparental populations. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2018; 38:66. [PMID: 29773962 PMCID: PMC5945787 DOI: 10.1007/s11032-018-0829-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 04/24/2018] [Indexed: 05/21/2023]
Abstract
In sub-Saharan Africa, maize is the key determinant of food security for smallholder farmers. The sudden outbreak of maize lethal necrosis (MLN) disease is seriously threatening the maize production in the region. Understanding the genetic basis of MLN resistance is crucial. In this study, we used four biparental populations applied linkage mapping and joint linkage mapping approaches to identify and validate the MLN resistance-associated genomic regions. All populations were genotyped with low to high density markers and phenotyped in multiple environments against MLN under artificial inoculation. Phenotypic variation for MLN resistance was significant and heritability was moderate to high in all four populations for both early and late stages of disease infection. Linkage mapping revealed three major quantitative trait loci (QTL) on chromosomes 3, 6, and 9 that were consistently detected in at least two of the four populations. Phenotypic variance explained by a single QTL in each population ranged from 3.9% in population 1 to 43.8% in population 2. Joint linkage association mapping across three populations with three biometric models together revealed 16 and 10 main effect QTL for MLN-early and MLN-late, respectively. The QTL identified on chromosomes 3, 5, 6, and 9 were consistent with the QTL identified by linkage mapping. Ridge regression best linear unbiased prediction with five-fold cross-validation revealed high accuracy for prediction across populations for both MLN-early and MLN-late. Overall, the study discovered and validated the presence of major effect QTL on chromosomes 3, 6, and 9 which can be potential candidates for marker-assisted breeding to improve the MLN resistance.
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Affiliation(s)
- Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Dan Makumbi
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Kassa Semagn
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Michael S. Olsen
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Jumbo M. Bright
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Biswanath Das
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
- MRI-Syngenta, Lusaka, Zambia
| | - Stephen Mugo
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - L. M. Suresh
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
| | - Boddupalli M. Prasanna
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621 Kenya
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14
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Fuchs M. Pyramiding resistance-conferring gene sequences in crops. Curr Opin Virol 2017; 26:36-42. [DOI: 10.1016/j.coviro.2017.07.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/05/2017] [Accepted: 07/07/2017] [Indexed: 12/26/2022]
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15
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Wang Q, Zhang C, Wang C, Qian Y, Li Z, Hong J, Zhou X. Further characterization of Maize chlorotic mottle virus and its synergistic interaction with Sugarcane mosaic virus in maize. Sci Rep 2017; 7:39960. [PMID: 28059116 PMCID: PMC5216416 DOI: 10.1038/srep39960] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/30/2016] [Indexed: 01/24/2023] Open
Abstract
Maize chlorotic mottle virus (MCMV) was first reported in maize in China in 2009. In this study we further analyzed the epidemiology of MCMV and corn lethal necrosis disease (CLND) in China. We determined that CLND observed in China was caused by co-infection of MCMV and sugarcane mosaic virus (SCMV). Phylogenetic analysis using four full-length MCMV cDNA sequences obtained in this study and the available MCMV sequences retrieved from GenBank indicated that Chinese MCMV isolates were derived from the same source. To screen for maize germplasm resistance against MCMV infection, we constructed an infectious clone of MCMV isolate YN2 (pMCMV) and developed an Agrobacterium-mediated injection procedure to allow high throughput inoculations of maize with the MCMV infectious clone. Electron microscopy showed that chloroplast photosynthesis in leaves was significantly impeded by the co-infection of MCMV and SCMV. Mitochondria in the MCMV and SCMV co-infected cells were more severely damaged than in MCMV-infected cells. The results of this study provide further insight into the epidemiology of MCMV in China and shed new light on physiological and cytopathological changes related to CLND in maize.
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Affiliation(s)
- Qiang Wang
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, People’s Republic of China
| | - Chao Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People’s Republic of China
| | - Chunyan Wang
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, People’s Republic of China
| | - Yajuan Qian
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, People’s Republic of China
| | - Zhenghe Li
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, People’s Republic of China
| | - Jian Hong
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, People’s Republic of China
| | - Xueping Zhou
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, People’s Republic of China
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, People’s Republic of China
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16
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Liu H, Zhang L, Wang J, Li C, Zeng X, Xie S, Zhang Y, Liu S, Hu S, Wang J, Lee M, Lübberstedt T, Zhao G. Quantitative Trait Locus Analysis for Deep-Sowing Germination Ability in the Maize IBM Syn10 DH Population. FRONTIERS IN PLANT SCIENCE 2017; 8:813. [PMID: 28588594 PMCID: PMC5439002 DOI: 10.3389/fpls.2017.00813] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 05/01/2017] [Indexed: 05/09/2023]
Abstract
Deep-sowing is an effective measure to ensure seeds absorbing water from deep soil layer and emerging normally in arid and semiarid regions. However, existing varieties demonstrate poor germination ability in deep soil layer and some key quantitative trait loci (QTL) or genes related to deep-sowing germination ability remain to be identified and analyzed. In this study, a high-resolution genetic map based on 280 lines of the intermated B73 × Mo17 (IBM) Syn10 doubled haploid (DH) population which comprised 6618 bin markers was used for the QTL analysis of deep-sowing germination related traits. The results showed significant differences in germination related traits under deep-sowing condition (12.5 cm) and standard-germination condition (2 cm) between two parental lines. In total, 8, 11, 13, 15, and 18 QTL for germination rate, seedling length, mesocotyl length, plumule length, and coleoptile length were detected for the two sowing conditions, respectively. These QTL explained 2.51-7.8% of the phenotypic variance with LOD scores ranging from 2.52 to 7.13. Additionally, 32 overlapping QTL formed 11 QTL clusters on all chromosomes except for chromosome 8, indicating the minor effect genes have a pleiotropic role in regulating various traits. Furthermore, we identified six candidate genes related to deep-sowing germination ability, which were co-located in the cluster regions. The results provide a basis for molecular marker assisted breeding and functional study in deep-sowing germination ability of maize.
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Affiliation(s)
- Hongjun Liu
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural UniversityTai'an, China
| | - Lin Zhang
- Department of Agronomy, Northeast Agricultural UniversityHarbin, China
| | - Jiechen Wang
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology & Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of SciencesShanghai, China
| | - Changsheng Li
- Department of Agronomy, Shenyang Agricultural UniversityShenyang, China
| | - Xing Zeng
- Department of Agronomy, Northeast Agricultural UniversityHarbin, China
| | - Shupeng Xie
- Suihua Sub-academy, Heilongjiang Academy of Agricultural SciencesSuihua, China
| | - Yongzhong Zhang
- Department of Plant Genetics and Breeding, College of Agronomy Sciences, Shandong Agricultural UniversityTai'an, China
| | - Sisi Liu
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Maize Research Institute, Sichuan Agricultural UniversityChengdu, China
| | - Songlin Hu
- Department of Agronomy, Iowa State UniversityAmes, IA, United States
| | - Jianhua Wang
- Department of Plant Genetics, Breeding and Seed Science, China Agricultural UniversityBeijing, China
| | - Michael Lee
- Department of Agronomy, Iowa State UniversityAmes, IA, United States
| | | | - Guangwu Zhao
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science, Zhejiang Agriculture and Forestry UniversityLin'an, China
- *Correspondence: Guangwu Zhao
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17
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Gowda M, Das B, Makumbi D, Babu R, Semagn K, Mahuku G, Olsen MS, Bright JM, Beyene Y, Prasanna BM. Genome-wide association and genomic prediction of resistance to maize lethal necrosis disease in tropical maize germplasm. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2015; 128:1957-68. [PMID: 26152570 PMCID: PMC4572053 DOI: 10.1007/s00122-015-2559-0] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 06/13/2015] [Indexed: 05/05/2023]
Abstract
KEY MESSAGE Genome-wide association analysis in tropical and subtropical maize germplasm revealed that MLND resistance is influenced by multiple genomic regions with small to medium effects. The maize lethal necrosis disease (MLND) caused by synergistic interaction of Maize chlorotic mottle virus and Sugarcane mosaic virus, and has emerged as a serious threat to maize production in eastern Africa since 2011. Our objective was to gain insights into the genetic architecture underlying the resistance to MLND by genome-wide association study (GWAS) and genomic selection. We used two association mapping (AM) panels comprising a total of 615 diverse tropical/subtropical maize inbred lines. All the lines were evaluated against MLND under artificial inoculation. Both the panels were genotyped using genotyping-by-sequencing. Phenotypic variation for MLND resistance was significant and heritability was moderately high in both the panels. Few promising lines with high resistance to MLND were identified to be used as potential donors. GWAS revealed 24 SNPs that were significantly associated (P < 3 × 10(-5)) with MLND resistance. These SNPs are located within or adjacent to 20 putative candidate genes that are associated with plant disease resistance. Ridge regression best linear unbiased prediction with five-fold cross-validation revealed higher prediction accuracy for IMAS-AM panel (0.56) over DTMA-AM (0.36) panel. The prediction accuracy for both within and across panels is promising; inclusion of MLND resistance associated SNPs into the prediction model further improved the accuracy. Overall, the study revealed that resistance to MLND is controlled by multiple loci with small to medium effects and the SNPs identified by GWAS can be used as potential candidates in MLND resistance breeding program.
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Affiliation(s)
- Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya.
| | - Biswanath Das
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
| | - Dan Makumbi
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
| | - Raman Babu
- International Maize and Wheat Improvement Center (CIMMYT), Hyderabad, India
| | - Kassa Semagn
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
| | - George Mahuku
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
| | - Michael S Olsen
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
| | - Jumbo M Bright
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
| | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
| | - Boddupalli M Prasanna
- International Maize and Wheat Improvement Center (CIMMYT), P. O. Box 1041, Village Market, Nairobi, 00621, Kenya
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18
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Abstract
Diseases caused by viruses are found throughout the maize-growing regions of the world and can cause significant losses for producers. In this review, virus diseases of maize and the pathogens that cause them are discussed. Factors leading to the spread of disease and measures for disease control are reviewed, as is our current knowledge of the genetics of virus resistance in this important crop.
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Affiliation(s)
- Margaret G Redinbaugh
- USDA, Agricultural Research Service, Corn, Soybean and Wheat Quality Research Unit and Department of Plant Pathology, Ohio State University-OARDC, Wooster, Ohio, USA.
| | - José L Zambrano
- Instituto Nacional Autónomo de Investigaciones Agropecuarias (INIAP), Programa Nacional del Maíz, Quito, Ecuador
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Mahuku G, Lockhart BE, Wanjala B, Jones MW, Kimunye JN, Stewart LR, Cassone BJ, Sevgan S, Nyasani JO, Kusia E, Kumar PL, Niblett CL, Kiggundu A, Asea G, Pappu HR, Wangai A, Prasanna BM, Redinbaugh MG. Maize Lethal Necrosis (MLN), an Emerging Threat to Maize-Based Food Security in Sub-Saharan Africa. PHYTOPATHOLOGY 2015; 105:956-65. [PMID: 25822185 DOI: 10.1094/phyto-12-14-0367-fi] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In sub-Saharan Africa, maize is a staple food and key determinant of food security for smallholder farming communities. Pest and disease outbreaks are key constraints to maize productivity. In September 2011, a serious disease outbreak, later diagnosed as maize lethal necrosis (MLN), was reported on maize in Kenya. The disease has since been confirmed in Rwanda and the Democratic Republic of Congo, and similar symptoms have been reported in Tanzania, Uganda, South Sudan, and Ethiopia. In 2012, yield losses of up to 90% resulted in an estimated grain loss of 126,000 metric tons valued at $52 million in Kenya alone. In eastern Africa, MLN was found to result from coinfection of maize with Maize chlorotic mottle virus (MCMV) and Sugarcane mosaic virus (SCMV), although MCMV alone appears to cause significant crop losses. We summarize here the results of collaborative research undertaken to understand the biology and epidemiology of MLN in East Africa and to develop disease management strategies, including identification of MLN-tolerant maize germplasm. We discuss recent progress, identify major issues requiring further research, and discuss the possible next steps for effective management of MLN.
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Affiliation(s)
- George Mahuku
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Benham E Lockhart
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Bramwel Wanjala
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Mark W Jones
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Janet Njeri Kimunye
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Lucy R Stewart
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Bryan J Cassone
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Subramanian Sevgan
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Johnson O Nyasani
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Elizabeth Kusia
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - P Lava Kumar
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - C L Niblett
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Andrew Kiggundu
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Godfrey Asea
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Hanu R Pappu
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Anne Wangai
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Boddupalli M Prasanna
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
| | - Margaret G Redinbaugh
- First, fifth, and seventeenth authors: International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, PO Box 1041-00621, Nairobi, Kenya; second author: Department of Plant Pathology, University of Minnesota, St. Paul; third and sixteenth authors: Kenya Agricultural and Livestock Research Organization (KALRO), Nairobi, Kenya; fourth, sixth, seventh, and eighteenth authors: United States Department of Agriculture-Agricultural Research Service Corn, Soybean and Wheat Quality Research and Department of Plant Pathology, Ohio State University, Wooster 44691; eighth, ninth, and tenth authors: Plant Health Division, International Centre of Insect Physiology and Ecology, P.O. Box 30772-00100, Nairobi, Kenya; eleventh author: International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria; twelfth author: Venganza, Inc., 9505 Ocean Shore Blvd., St. Augustine, FL 32080; thirteenth and fourteenth authors: National Agricultural Research Organization, Entebbe, Uganda; and fifteenth author: Department of Plant Pathology, Washington State University, Pullman 99164
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Song FJ, Xiao MG, Duan CX, Li HJ, Zhu ZD, Liu BT, Sun SL, Wu XF, Wang XM. Two genes conferring resistance to Pythium stalk rot in maize inbred line Qi319. Mol Genet Genomics 2015; 290:1543-9. [DOI: 10.1007/s00438-015-1019-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 02/23/2015] [Indexed: 10/23/2022]
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Horn F, Habekuss A, Stich B. Linkage mapping of Barley yellow dwarf virus resistance in connected populations of maize. BMC PLANT BIOLOGY 2015; 15:29. [PMID: 25643896 PMCID: PMC4329211 DOI: 10.1186/s12870-015-0420-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 01/09/2015] [Indexed: 05/29/2023]
Abstract
BACKGROUND With increasing winter temperatures, Barley yellow dwarf virus (BYDV) is expected to become an increasing problem in maize cultivation in Germany. Earlier studies revealed that BYDV has a negative impact on maize performance. Molecular markers would accelerate the development of BYDV resistant maize. Therefore, the objectives of this study were (i) the identification of quantitative trait loci (QTL) for BYDV resistance in five connected segregating maize populations in a field experiment and (ii) their comparison with the QTL detected under greenhouse conditions. RESULTS In linkage analyses of the traits virus extinction, infection rate, and the symptom red edges, a highly associated major QTL was identified on chromosome 10. This QTL explained 45% of the phenotypic variance for the traits virus extinction and infection rate and 30% for the symptom red edges. CONCLUSION We could show that BYDV resistance traits are oligogenically inherited. The QTL on chromosome 10 could be observed in the connected linkage analyses and in the single population analyses. Furthermore, this QTL could also be confirmed in the greenhouse experiment. Our results let suggest that this QTL is involved in multiple virus resistance and the markers are promising for marker assisted selection.
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Affiliation(s)
- Frederike Horn
- Max Planck Institute for Plant Breeding Research, Carl-von-Linné Weg, Cologne, 50829, Germany.
| | - Antje Habekuss
- Julius Kühn Institute, Erwin-Baur-Straße 27, Quedlinburg, 06484, Germany.
| | - Benjamin Stich
- Max Planck Institute for Plant Breeding Research, Carl-von-Linné Weg, Cologne, 50829, Germany.
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Horn F, Habekuß A, Stich B. Genes involved in barley yellow dwarf virus resistance of maize. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2014; 127:2575-84. [PMID: 25261982 PMCID: PMC4236618 DOI: 10.1007/s00122-014-2400-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 09/11/2014] [Indexed: 05/09/2023]
Abstract
The results of our study suggest that genes involved in general resistance mechanisms of plants contribute to variation of BYDV resistance in maize. With increasing winter temperatures in Europe, Barley yellow dwarf virus (BYDV) is expected to become a prominent problem in maize cultivation. Breeding for resistance is the best strategy to control the disease and break the transmission cycle of the virus. The objectives of our study were (1) to determine genetic variation with respect to BYDV resistance in a broad germplasm set and (2) to identify single nucleotide polymorphism (SNP) markers linked to genes that are involved in BYDV resistance. An association mapping population with 267 genotypes representing the world's maize gene pool was grown in the greenhouse. Plants were inoculated with BYDV-PAV using viruliferous Rhopalosiphum padi. In the association mapping population, we observed considerable genotypic variance for the trait virus extinction as measured by double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) and the infection rate. In a genome-wide association study, we observed three SNPs significantly [false discovery rate (FDR) = 0.05] associated with the virus extinction on chromosome 10 explaining together 25 % of the phenotypic variance and five SNPs for the infection rate on chromosomes 4 and 10 explaining together 33 % of the phenotypic variance. The SNPs significantly associated with BYDV resistance can be used in marker assisted selection and will accelerate the breeding process for the development of BYDV resistant maize genotypes. Furthermore, these SNPs were located within genes which were in other organisms described to play a role in general resistance mechanisms. This suggests that these genes contribute to variation of BYDV resistance in maize.
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Affiliation(s)
- Frederike Horn
- Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Cologne, Germany
| | - Antje Habekuß
- Julius Kuehn-Institute, Erwin-Baur-Str. 27, 06484 Quedlinburg, Germany
| | - Benjamin Stich
- Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Cologne, Germany
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