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Brabham HJ, Gómez De La Cruz D, Were V, Shimizu M, Saitoh H, Hernández-Pinzón I, Green P, Lorang J, Fujisaki K, Sato K, Molnár I, Šimková H, Doležel J, Russell J, Taylor J, Smoker M, Gupta YK, Wolpert T, Talbot NJ, Terauchi R, Moscou MJ. Barley MLA3 recognizes the host-specificity effector Pwl2 from Magnaporthe oryzae. THE PLANT CELL 2024; 36:447-470. [PMID: 37820736 PMCID: PMC10827324 DOI: 10.1093/plcell/koad266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023]
Abstract
Plant nucleotide-binding leucine-rich repeat (NLRs) immune receptors directly or indirectly recognize pathogen-secreted effector molecules to initiate plant defense. Recognition of multiple pathogens by a single NLR is rare and usually occurs via monitoring for changes to host proteins; few characterized NLRs have been shown to recognize multiple effectors. The barley (Hordeum vulgare) NLR gene Mildew locus a (Mla) has undergone functional diversification, and the proteins encoded by different Mla alleles recognize host-adapted isolates of barley powdery mildew (Blumeria graminis f. sp. hordei [Bgh]). Here, we show that Mla3 also confers resistance to the rice blast fungus Magnaporthe oryzae in a dosage-dependent manner. Using a forward genetic screen, we discovered that the recognized effector from M. oryzae is Pathogenicity toward Weeping Lovegrass 2 (Pwl2), a host range determinant factor that prevents M. oryzae from infecting weeping lovegrass (Eragrostis curvula). Mla3 has therefore convergently evolved the capacity to recognize effectors from diverse pathogens.
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Affiliation(s)
- Helen J Brabham
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
- 2Blades, Evanston, IL 60201, USA
| | - Diana Gómez De La Cruz
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Vincent Were
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Motoki Shimizu
- Iwate Biotechnology Research Centre, Kitakami 024-0003, Japan
| | - Hiromasa Saitoh
- Department of Molecular Microbiology, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | | | - Phon Green
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Jennifer Lorang
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA
| | - Koki Fujisaki
- Iwate Biotechnology Research Centre, Kitakami 024-0003, Japan
| | - Kazuhiro Sato
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
| | - István Molnár
- Institute of Experimental Botany of the Czech Academy of Sciences, 779 00 Olomouc, Czech Republic
| | - Hana Šimková
- Institute of Experimental Botany of the Czech Academy of Sciences, 779 00 Olomouc, Czech Republic
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, 779 00 Olomouc, Czech Republic
| | - James Russell
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Jodie Taylor
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Matthew Smoker
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Yogesh Kumar Gupta
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
- 2Blades, Evanston, IL 60201, USA
| | - Tom Wolpert
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA
| | - Nicholas J Talbot
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Ryohei Terauchi
- Iwate Biotechnology Research Centre, Kitakami 024-0003, Japan
- Laboratory of Crop Evolution, Graduate School of Agriculture, Kyoto University, Kyoto 617-0001, Japan
| | - Matthew J Moscou
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
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2
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Resistance strategies for defense against Albugo candida causing white rust disease. Microbiol Res 2023; 270:127317. [PMID: 36805163 DOI: 10.1016/j.micres.2023.127317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 12/12/2022] [Accepted: 02/01/2023] [Indexed: 02/11/2023]
Abstract
Albugo candida, the causal organism of white rust, is an oomycete obligate pathogen infecting crops of Brassicaceae family occurred on aerial part, including vegetable and oilseed crops at all growth stages. The disease expression is characterized by local infection appearing on the abaxial region developing white or creamy yellow blister (sori) on leaves and systemic infections cause hypertrophy and hyperplasia leading to stag-head of reproductive organ. To overcome this problem, several disease management strategies like fungicide treatments were used in the field and disease-resistant varieties have also been developed using conventional and molecular breeding. Due to high variability among A. candida isolates, there is no single approach available to understand the diverse spectrum of disease symptoms. In absence of resistance sources against pathogen, repetitive cultivation of genetically-similar varieties locally tends to attract oomycete pathogen causing heavy yield losses. In the present review, a deep insight into the underlying role of the non-host resistance (NHR) defence mechanism available in plants, and the strategies to exploit available gene pools from plant species that are non-host to A. candida could serve as novel sources of resistance. This work summaries the current knowledge pertaining to the resistance sources available in non-host germ plasm, the understanding of defence mechanisms and the advance strategies covers molecular, biochemical and nature-based solutions in protecting Brassica crops from white rust disease.
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Holden S, Bergum M, Green P, Bettgenhaeuser J, Hernández-Pinzón I, Thind A, Clare S, Russell JM, Hubbard A, Taylor J, Smoker M, Gardiner M, Civolani L, Cosenza F, Rosignoli S, Strugala R, Molnár I, Šimková H, Doležel J, Schaffrath U, Barrett M, Salvi S, Moscou MJ. A lineage-specific Exo70 is required for receptor kinase-mediated immunity in barley. SCIENCE ADVANCES 2022; 8:eabn7258. [PMID: 35857460 PMCID: PMC9258809 DOI: 10.1126/sciadv.abn7258] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In the evolution of land plants, the plant immune system has experienced expansion in immune receptor and signaling pathways. Lineage-specific expansions have been observed in diverse gene families that are potentially involved in immunity but lack causal association. Here, we show that Rps8-mediated resistance in barley to the pathogen Puccinia striiformis f. sp. tritici (wheat stripe rust) is conferred by a genetic module: Pur1 and Exo70FX12, which are together necessary and sufficient. Pur1 encodes a leucine-rich repeat receptor kinase and is the ortholog of rice Xa21, and Exo70FX12 belongs to the Poales-specific Exo70FX clade. The Exo70FX clade emerged after the divergence of the Bromeliaceae and Poaceae and comprises from 2 to 75 members in sequenced grasses. These results demonstrate the requirement of a lineage-specific Exo70FX12 in Pur1-mediated immunity and suggest that the Exo70FX clade may have evolved a specialized role in receptor kinase signaling.
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Affiliation(s)
- Samuel Holden
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Molly Bergum
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Phon Green
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Jan Bettgenhaeuser
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | | | - Anupriya Thind
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Shaun Clare
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - James M. Russell
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Amelia Hubbard
- NIAB, 93 Lawrence Weaver Road, Cambridge CB3 0LE, England, UK
| | - Jodi Taylor
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Matthew Smoker
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Matthew Gardiner
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
| | - Laura Civolani
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
- Department of Agricultural and Food Sciences, University of Bologna, Viale G. Fanin 44, 40127 Bologna, Italy
| | - Francesco Cosenza
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
- Department of Agricultural and Food Sciences, University of Bologna, Viale G. Fanin 44, 40127 Bologna, Italy
| | - Serena Rosignoli
- Department of Agricultural and Food Sciences, University of Bologna, Viale G. Fanin 44, 40127 Bologna, Italy
| | - Roxana Strugala
- Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany
| | - István Molnár
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Hana Šimková
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Jaroslav Doležel
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Ulrich Schaffrath
- Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany
| | - Matthew Barrett
- Australian Tropical Herbarium, James Cook University, Smithfield 4878, Australia
| | - Silvio Salvi
- Department of Agricultural and Food Sciences, University of Bologna, Viale G. Fanin 44, 40127 Bologna, Italy
| | - Matthew J. Moscou
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK
- Corresponding author.
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4
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Bettgenhaeuser J, Hernández-Pinzón I, Dawson AM, Gardiner M, Green P, Taylor J, Smoker M, Ferguson JN, Emmrich P, Hubbard A, Bayles R, Waugh R, Steffenson BJ, Wulff BBH, Dreiseitl A, Ward ER, Moscou MJ. The barley immune receptor Mla recognizes multiple pathogens and contributes to host range dynamics. Nat Commun 2021; 12:6915. [PMID: 34824299 PMCID: PMC8617247 DOI: 10.1038/s41467-021-27288-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 11/11/2021] [Indexed: 11/25/2022] Open
Abstract
Crop losses caused by plant pathogens are a primary threat to stable food production. Stripe rust (Puccinia striiformis) is a fungal pathogen of cereal crops that causes significant, persistent yield loss. Stripe rust exhibits host species specificity, with lineages that have adapted to infect wheat and barley. While wheat stripe rust and barley stripe rust are commonly restricted to their corresponding hosts, the genes underlying this host specificity remain unknown. Here, we show that three resistance genes, Rps6, Rps7, and Rps8, contribute to immunity in barley to wheat stripe rust. Rps7 cosegregates with barley powdery mildew resistance at the Mla locus. Using transgenic complementation of different Mla alleles, we confirm allele-specific recognition of wheat stripe rust by Mla. Our results show that major resistance genes contribute to the host species specificity of wheat stripe rust on barley and that a shared genetic architecture underlies resistance to the adapted pathogen barley powdery mildew and non-adapted pathogen wheat stripe rust.
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Affiliation(s)
- Jan Bettgenhaeuser
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
- KWS SAAT SE & Co. KGaA, 37574, Einbeck, Germany
| | | | - Andrew M Dawson
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
| | - Matthew Gardiner
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
| | - Phon Green
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
| | - Jodie Taylor
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
| | - Matthew Smoker
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
| | - John N Ferguson
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Peter Emmrich
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
- John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Amelia Hubbard
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, England, UK
| | - Rosemary Bayles
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, England, UK
| | - Robbie Waugh
- The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
| | - Brian J Steffenson
- Department of Plant Pathology, University of Minnesota, St. Paul, MN, 55108, USA
| | - Brande B H Wulff
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
- Center for Desert Agriculture, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Antonín Dreiseitl
- Department of Integrated Plant Protection, Agrotest Fyto Ltd, Havlíčkova 2787, CZ-767 01, Kroměříž, Czech Republic
| | - Eric R Ward
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK
- AgBiome, Research Triangle Park, NC, 27709, USA
| | - Matthew J Moscou
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, England, UK.
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5
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van den Berg N, Swart V, Backer R, Fick A, Wienk R, Engelbrecht J, Prabhu SA. Advances in Understanding Defense Mechanisms in Persea americana Against Phytophthora cinnamomi. FRONTIERS IN PLANT SCIENCE 2021; 12:636339. [PMID: 33747014 PMCID: PMC7971113 DOI: 10.3389/fpls.2021.636339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/18/2021] [Indexed: 06/03/2023]
Abstract
Avocado (Persea americana) is an economically important fruit crop world-wide, the production of which is challenged by notable root pathogens such as Phytophthora cinnamomi and Rosellinia necatrix. Arguably the most prevalent, P. cinnamomi, is a hemibiotrophic oomycete which causes Phytophthora root rot, leading to reduced yields and eventual tree death. Despite its' importance, the development of molecular tools and resources have been historically limited, prohibiting significant progress toward understanding this important host-pathogen interaction. The development of a nested qPCR assay capable of quantifying P. cinnamomi during avocado infection has enabled us to distinguish avocado rootstocks as either resistant or tolerant - an important distinction when unraveling the defense response. This review will provide an overview of our current knowledge on the molecular defense pathways utilized in resistant avocado rootstock against P. cinnamomi. Notably, avocado demonstrates a biphasic phytohormone profile in response to P. cinnamomi infection which allows for the timely expression of pathogenesis-related genes via the NPR1 defense response pathway. Cell wall modification via callose deposition and lignification have also been implicated in the resistant response. Recent advances such as composite plant transformation, single nucleotide polymorphism (SNP) analyses as well as genomics and transcriptomics will complement existing molecular, histological, and biochemical assay studies and further elucidate avocado defense mechanisms.
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Affiliation(s)
- Noëlani van den Berg
- Hans Merensky Chair in Avocado Research, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
- Faculty of Natural and Agricultural Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Velushka Swart
- Hans Merensky Chair in Avocado Research, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
- Faculty of Natural and Agricultural Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Robert Backer
- Hans Merensky Chair in Avocado Research, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
- Faculty of Natural and Agricultural Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Alicia Fick
- Hans Merensky Chair in Avocado Research, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
- Faculty of Natural and Agricultural Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Raven Wienk
- Hans Merensky Chair in Avocado Research, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
- Faculty of Natural and Agricultural Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Juanita Engelbrecht
- Hans Merensky Chair in Avocado Research, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
- Faculty of Natural and Agricultural Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - S. Ashok Prabhu
- Hans Merensky Chair in Avocado Research, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
- Faculty of Natural and Agricultural Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
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Hatta MAM, Arora S, Ghosh S, Matny O, Smedley MA, Yu G, Chakraborty S, Bhatt D, Xia X, Steuernagel B, Richardson T, Mago R, Lagudah ES, Patron NJ, Ayliffe M, Rouse MN, Harwood WA, Periyannan S, Steffenson BJ, Wulff BB. The wheat Sr22, Sr33, Sr35 and Sr45 genes confer resistance against stem rust in barley. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:273-284. [PMID: 32744350 PMCID: PMC7868974 DOI: 10.1111/pbi.13460] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 06/17/2020] [Indexed: 05/16/2023]
Abstract
In the last 20 years, stem rust caused by the fungus Puccinia graminis f. sp. tritici (Pgt), has re-emerged as a major threat to wheat and barley production in Africa and Europe. In contrast to wheat with 60 designated stem rust (Sr) resistance genes, barley's genetic variation for stem rust resistance is very narrow with only ten resistance genes genetically identified. Of these, only one complex locus consisting of three genes is effective against TTKSK, a widely virulent Pgt race of the Ug99 tribe which emerged in Uganda in 1999 and has since spread to much of East Africa and parts of the Middle East. The objective of this study was to assess the functionality, in barley, of cloned wheat Sr genes effective against race TTKSK. Sr22, Sr33, Sr35 and Sr45 were transformed into barley cv. Golden Promise using Agrobacterium-mediated transformation. All four genes were found to confer effective stem rust resistance. The barley transgenics remained susceptible to the barley leaf rust pathogen Puccinia hordei, indicating that the resistance conferred by these wheat Sr genes was specific for Pgt. Furthermore, these transgenic plants did not display significant adverse agronomic effects in the absence of disease. Cloned Sr genes from wheat are therefore a potential source of resistance against wheat stem rust in barley.
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Affiliation(s)
- M. Asyraf Md Hatta
- John Innes CentreNorwich Research ParkNorwichUK
- Department of Agriculture TechnologyFaculty of AgricultureUniversiti Putra MalaysiaSerdangMalaysia
| | - Sanu Arora
- John Innes CentreNorwich Research ParkNorwichUK
| | - Sreya Ghosh
- John Innes CentreNorwich Research ParkNorwichUK
| | - Oadi Matny
- Department of Plant PathologyStakman Borlaug Center for Sustainable Plant HealthUniversity of MinnesotaSt. PaulMNUSA
| | | | - Guotai Yu
- John Innes CentreNorwich Research ParkNorwichUK
| | - Soma Chakraborty
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | - Dhara Bhatt
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | - Xiaodi Xia
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | | | - Terese Richardson
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | - Rohit Mago
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | - Evans S. Lagudah
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | | | - Michael Ayliffe
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | - Matthew N. Rouse
- Department of Plant PathologyStakman Borlaug Center for Sustainable Plant HealthUniversity of MinnesotaSt. PaulMNUSA
- USDA‐ARS Cereal Disease LaboratorySt. PaulMNUSA
| | | | - Sambasivam Periyannan
- Commonwealth Scientific and Industrial Research Organization (CSIRO)Agriculture and FoodCanberraACTAustralia
| | - Brian J. Steffenson
- Department of Plant PathologyStakman Borlaug Center for Sustainable Plant HealthUniversity of MinnesotaSt. PaulMNUSA
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7
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Panstruga R, Moscou MJ. What is the Molecular Basis of Nonhost Resistance? MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2020; 33:1253-1264. [PMID: 32808862 DOI: 10.1094/mpmi-06-20-0161-cr] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This article is part of the Top 10 Unanswered Questions in MPMI invited review series.Nonhost resistance is typically considered the ability of a plant species to repel all attempts of a pathogen species to colonize it and reproduce on it. Based on this common definition, nonhost resistance is presumed to be very durable and, thus, of great interest for its potential use in agriculture. Despite considerable research efforts, the molecular basis of this type of plant immunity remains nebulous. We here stress the fact that "nonhost resistance" is a phenomenological rather than a mechanistic concept that comprises more facets than typically considered. We further argue that nonhost resistance essentially relies on the very same genes and pathways as other types of plant immunity, of which some may act as bottlenecks for particular pathogens on a given plant species or under certain conditions. Thus, in our view, the frequently used term "nonhost genes" is misleading and should be avoided. Depending on the plant-pathogen combination, nonhost resistance may involve the recognition of pathogen effectors by host immune sensor proteins, which might give rise to host shifts or host range expansions due to evolutionary-conditioned gains and losses in respective armories. Thus, the extent of nonhost resistance also defines pathogen host ranges. In some instances, immune-related genes can be transferred across plant species to boost defense, resulting in augmented disease resistance. We discuss future routes for deepening our understanding of nonhost resistance and argue that the confusing term "nonhost resistance" should be used more cautiously in the light of a holistic view of plant immunity.
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Affiliation(s)
- Ralph Panstruga
- RWTH Aachen University, Institute for Biology I, Unit of Plant Molecular Cell Biology, Worringer Weg 1, 52056 Aachen, Germany
| | - Matthew J Moscou
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, United Kingdom
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8
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Hiebert CW, Moscou MJ, Hewitt T, Steuernagel B, Hernández-Pinzón I, Green P, Pujol V, Zhang P, Rouse MN, Jin Y, McIntosh RA, Upadhyaya N, Zhang J, Bhavani S, Vrána J, Karafiátová M, Huang L, Fetch T, Doležel J, Wulff BBH, Lagudah E, Spielmeyer W. Stem rust resistance in wheat is suppressed by a subunit of the mediator complex. Nat Commun 2020; 11:1123. [PMID: 32111840 PMCID: PMC7048732 DOI: 10.1038/s41467-020-14937-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 02/11/2020] [Indexed: 11/18/2022] Open
Abstract
Stem rust is an important disease of wheat that can be controlled using resistance genes. The gene SuSr-D1 identified in cultivar ‘Canthatch’ suppresses stem rust resistance. SuSr-D1 mutants are resistant to several races of stem rust that are virulent on wild-type plants. Here we identify SuSr-D1 by sequencing flow-sorted chromosomes, mutagenesis, and map-based cloning. The gene encodes Med15, a subunit of the Mediator Complex, a conserved protein complex in eukaryotes that regulates expression of protein-coding genes. Nonsense mutations in Med15b.D result in expression of stem rust resistance. Time-course RNAseq analysis show a significant reduction or complete loss of differential gene expression at 24 h post inoculation in med15b.D mutants, suggesting that transcriptional reprogramming at this time point is not required for immunity to stem rust. Suppression is a common phenomenon and this study provides novel insight into suppression of rust resistance in wheat. Stem rust is an important disease of wheat and resistance present in some cultivars can be suppressed by the SuSr-D1 locus. Here the authors show that SuSr-D1 encodes a subunit of the Mediator Complex and that nonsense mutations are sufficient to abolish suppression and confer stem rust resistance.
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Affiliation(s)
- Colin W Hiebert
- Agriculture and Agri-Food Canada, Morden Research and Development Centre, 101 Route 100, Morden, MB, R6M 1Y5, Canada.
| | - Matthew J Moscou
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK.
| | - Tim Hewitt
- Plant Breeding Institute Cobbitty, University of Sydney, Private Bag 4011, Narellan, NSW, 2567, Australia.,CSIRO Agriculture & Food, GPO Box 1700, Canberra, ACT, 2601, Australia
| | | | - Inma Hernández-Pinzón
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
| | - Phon Green
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UK, UK
| | - Vincent Pujol
- Research School of Biology, The Australian National University, Acton, ACT, 2601, Australia
| | - Peng Zhang
- Plant Breeding Institute Cobbitty, University of Sydney, Private Bag 4011, Narellan, NSW, 2567, Australia
| | - Matthew N Rouse
- USDA-ARS, Cereal Disease Laboratory, University of Minnesota, St. Paul, MN, 55108, USA
| | - Yue Jin
- USDA-ARS, Cereal Disease Laboratory, University of Minnesota, St. Paul, MN, 55108, USA
| | - Robert A McIntosh
- Plant Breeding Institute Cobbitty, University of Sydney, Private Bag 4011, Narellan, NSW, 2567, Australia
| | | | - Jianping Zhang
- CSIRO Agriculture & Food, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Sridhar Bhavani
- CIMMYT, ICRAF House, United Nations Avenue, Gigiri, Village Market, Nairobi, 00621, Kenya
| | - Jan Vrána
- Institute of Experimental Botany, Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00, Olomouc, Czech Republic
| | - Miroslava Karafiátová
- Institute of Experimental Botany, Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00, Olomouc, Czech Republic
| | - Li Huang
- Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT, 59717, USA
| | - Tom Fetch
- Agriculture and Agri-Food Canada, Morden Research and Development Centre, 101 Route 100, Morden, MB, R6M 1Y5, Canada
| | - Jaroslav Doležel
- Institute of Experimental Botany, Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00, Olomouc, Czech Republic
| | | | - Evans Lagudah
- CSIRO Agriculture & Food, GPO Box 1700, Canberra, ACT, 2601, Australia.
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9
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Zhang Y, Shi Y, Zhao L, Wei F, Feng Z, Feng H. Phosphoproteomics Profiling of Cotton ( Gossypium hirsutum L.) Roots in Response to Verticillium dahliae Inoculation. ACS OMEGA 2019; 4:18434-18443. [PMID: 31720547 PMCID: PMC6844108 DOI: 10.1021/acsomega.9b02634] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 10/11/2019] [Indexed: 06/10/2023]
Abstract
Verticillium wilt is a plant vascular disease causing severe yield and quality losses in many crops and is caused by the soil-borne plant pathogenic fungus Verticillium dahliae. To investigate the molecular mechanisms of the cotton-V. dahliae interaction, a time-course phosphoproteomic analysis of roots of susceptible and resistant cotton lines in response to V. dahliae was performed. In total, 1716 unique phosphoproteins were identified in the susceptible (S) and resistant (R) cotton lines. Of these, 359 phosphoproteins were significantly different in R1 (1 day after V. dahliae inoculation) vs R0 (mock) group and 287 phosphoproteins in R2 (3 days after V. dahliae inoculation) vs R0 group. Moreover, 263 proteins of V. dahliae-regulated phosphoproteins were significantly changed in S1 (1 day after V. dahliae inoculation) vs S0 (mock) group and 197 proteins in S2 (3 days after V. dahliae inoculation) vs S0 group. Thirty phosphoproteins were significantly changed and common to the resistant and susceptible cotton lines following inoculation with V. dahliae. Specifically, 92 phosphoproteins were shared in both in R1 vs R0 and R2 vs R0 but not in susceptible cotton lines. There were 38 common phosphoproteins shared in both S1 vs S0 and S2 vs S0 but not in resistant cotton lines. GO terms and Kyoto Encyclopedia of Genes and Genomes pathway analyses displayed an abundance of known and novel phosphoproteins related to plant-pathogen interactions, signal transduction, and metabolic processes, which were correlated with resistance against fungal infection. These data provide new perspectives and inspiration for understanding molecular defense mechanisms of cotton roots against V. dahliae infection.
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Affiliation(s)
- Yihao Zhang
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China
| | - Yongqiang Shi
- State
Key Laboratory of Cotton Biology, Institute
of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Lihong Zhao
- State
Key Laboratory of Cotton Biology, Institute
of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Feng Wei
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China
- State
Key Laboratory of Cotton Biology, Institute
of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Zili Feng
- State
Key Laboratory of Cotton Biology, Institute
of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Hongjie Feng
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China
- State
Key Laboratory of Cotton Biology, Institute
of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
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10
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Ayliffe M, Sørensen CK. Plant nonhost resistance: paradigms and new environments. CURRENT OPINION IN PLANT BIOLOGY 2019; 50:104-113. [PMID: 31075541 DOI: 10.1016/j.pbi.2019.03.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 03/08/2019] [Accepted: 03/25/2019] [Indexed: 05/25/2023]
Abstract
Nonhost resistance (NHR) protects plants from a large and diverse array of potential phytopathogens. Each phytopathogen can parasitise some plant species, but most plant species are nonhosts that are innately immune due to a series of physical, chemical and inducible defenses these nonadapted pathogens cannot overcome. New evidence supports the NHR paradigm that posits the inability of potential pathogens to colonise nonhost plants is frequently due to molecular incompatibility between pathogen virulence factors and plant cellular targets. While NHR is durable, it is not insurmountable. Environmental changes can facilitate pathogen host jumps or alternatively result in new encounters between previously isolated plant species and pathogens. Climate change is predicted to substantially alter the current distribution of plants and their pathogens which could result in parasitism of new plant species.
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Affiliation(s)
- Michael Ayliffe
- CSIRO Agriculture and Food, Box 1700, Clunies Ross Street, Canberra, ACT 2601, Australia.
| | - Chris K Sørensen
- Department of Agroecology, Aarhus University, Forsøgsvej 1, DK-4200, Slagelse, Denmark
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11
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Bartaula R, Melo ATO, Kingan S, Jin Y, Hale I. Mapping non-host resistance to the stem rust pathogen in an interspecific barberry hybrid. BMC PLANT BIOLOGY 2019; 19:319. [PMID: 31311507 PMCID: PMC6636152 DOI: 10.1186/s12870-019-1893-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/19/2019] [Indexed: 05/17/2023]
Abstract
BACKGROUND Non-host resistance (NHR) presents a compelling long-term plant protection strategy for global food security, yet the genetic basis of NHR remains poorly understood. For many diseases, including stem rust of wheat [causal organism Puccinia graminis (Pg)], NHR is largely unexplored due to the inherent challenge of developing a genetically tractable system within which the resistance segregates. The present study turns to the pathogen's alternate host, barberry (Berberis spp.), to overcome this challenge. RESULTS In this study, an interspecific mapping population derived from a cross between Pg-resistant Berberis thunbergii (Bt) and Pg-susceptible B. vulgaris was developed to investigate the Pg-NHR exhibited by Bt. To facilitate QTL analysis and subsequent trait dissection, the first genetic linkage maps for the two parental species were constructed and a chromosome-scale reference genome for Bt was assembled (PacBio + Hi-C). QTL analysis resulted in the identification of a single 13 cM region (~ 5.1 Mbp spanning 13 physical contigs) on the short arm of Bt chromosome 3. Differential gene expression analysis, combined with sequence variation analysis between the two parental species, led to the prioritization of several candidate genes within the QTL region, some of which belong to gene families previously implicated in disease resistance. CONCLUSIONS Foundational genetic and genomic resources developed for Berberis spp. enabled the identification and annotation of a QTL associated with Pg-NHR. Although subsequent validation and fine mapping studies are needed, this study demonstrates the feasibility of and lays the groundwork for dissecting Pg-NHR in the alternate host of one of agriculture's most devastating pathogens.
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Affiliation(s)
- Radhika Bartaula
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH 03824 USA
| | - Arthur T. O. Melo
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH 03824 USA
| | | | - Yue Jin
- USDA-ARS Cereal Disease Laboratory, St. Paul, MN 55108 USA
| | - Iago Hale
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH 03824 USA
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12
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Transgressive segregation reveals mechanisms of Arabidopsis immunity to Brassica-infecting races of white rust ( Albugo candida). Proc Natl Acad Sci U S A 2019; 116:2767-2773. [PMID: 30692254 PMCID: PMC6377460 DOI: 10.1073/pnas.1812911116] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Most plants resist most plant pathogens. Barley resists wheat-infecting powdery mildew races (and vice versa), and both barley and wheat resist potato late blight. Such “nonhost” resistance could result because the pathogen fails to suppress defense or triggers innate immunity due to failure to evade detection. Albugo candida causes white rust on most Brassicaceae, and we investigated Arabidopsis NHR to Brassica-infecting races. Transgressive segregation for resistance in Arabidopsis recombinant inbred lines revealed genes encoding nucleotide-binding, leucine-rich repeat (NLR) immune receptors. Some of these NLR-encoding genes confer resistance to white rust in Brassica sp. This genetic method thus provides a route to reveal resistance genes for crops, widening the pool from which such genes might be obtained. Arabidopsis thaliana accessions are universally resistant at the adult leaf stage to white rust (Albugo candida) races that infect the crop species Brassica juncea and Brassica oleracea. We used transgressive segregation in recombinant inbred lines to test if this apparent species-wide (nonhost) resistance in A. thaliana is due to natural pyramiding of multiple Resistance (R) genes. We screened 593 inbred lines from an Arabidopsis multiparent advanced generation intercross (MAGIC) mapping population, derived from 19 resistant parental accessions, and identified two transgressive segregants that are susceptible to the pathogen. These were crossed to each MAGIC parent, and analysis of resulting F2 progeny followed by positional cloning showed that resistance to an isolate of A. candida race 2 (Ac2V) can be explained in each accession by at least one of four genes encoding nucleotide-binding, leucine-rich repeat (NLR) immune receptors. An additional gene was identified that confers resistance to an isolate of A. candida race 9 (AcBoT) that infects B. oleracea. Thus, effector-triggered immunity conferred by distinct NLR-encoding genes in multiple A. thaliana accessions provides species-wide resistance to these crop pathogens.
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13
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Zhu X, Zhao J, Abbas HMK, Liu Y, Cheng M, Huang J, Cheng W, Wang B, Bai C, Wang G, Dong W. Pyramiding of nine transgenes in maize generates high-level resistance against necrotrophic maize pathogens. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:2145-2156. [PMID: 30006836 DOI: 10.1007/s00122-018-3143-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 07/06/2018] [Indexed: 05/25/2023]
Abstract
Key message Nine transgenes from different categories, viz. plant defense response genes and anti-apoptosis genes, played combined roles in maize to inhibit the necrotrophic pathogens Rhizoctonia solani and Bipolaris maydis. Maize sheath blight and southern corn leaf blight are major global threats to maize production. The management of these necrotrophic pathogens has encountered limited success due to the characteristics of their lifestyle. Here, we presented a transgenic pyramiding breeding strategy to achieve nine different resistance genes integrated in one transgenic maize line to combat different aspects of necrotrophic pathogens. These nine genes, selected from two different categories, plant defense response genes (Chi, Glu, Ace-AMP1, Tlp, Rs-AFP2, ZmPROPEP1 and Pti4), and anti-apoptosis genes (Iap and p35), were successfully transferred into maize and further implicated in resistance against the necrotrophic pathogens Rhizoctonia solani and Bipolaris maydis. Furthermore, the transgenic maize line 910, with high expression levels of the nine integrated genes, was selected from 49 lines. Under greenhouse and field trial conditions, line 910 showed significant resistance against maize sheath blight and southern corn leaf blight diseases. Higher-level resistance was obtained after the pyramiding of more resistance transgenes from different categories that function via different mechanisms. The present study provides a successful strategy for the management of necrotrophic pathogens.
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Affiliation(s)
- Xiang Zhu
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Jinfeng Zhao
- Millet Research Institute, Shanxi Academy of Agricultural Sciences, Changzhi, 046011, Shanxi Province, China
| | - Hafiz Muhammad Khalid Abbas
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Yunjun Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Street of Zhongguancun 12, Beijing, 100081, China
| | - Menglan Cheng
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Jue Huang
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Wenjuan Cheng
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Beibei Wang
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Cuiying Bai
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Guoying Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Street of Zhongguancun 12, Beijing, 100081, China
| | - Wubei Dong
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China.
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14
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Zhu X, Zhao J, Abbas HMK, Liu Y, Cheng M, Huang J, Cheng W, Wang B, Bai C, Wang G, Dong W. Pyramiding of nine transgenes in maize generates high-level resistance against necrotrophic maize pathogens. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:1-12. [PMID: 29134240 DOI: 10.1007/s00122-017-2954-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 07/26/2017] [Indexed: 05/10/2023]
Abstract
Key message Nine transgenes from different categories, viz. plant defense response genes and anti-apoptosis genes, played combined roles in maize to inhibit the necrotrophic pathogens Rhizoctonia solani and Bipolaris maydis. Maize sheath blight and southern corn leaf blight are major global threats to maize production. The management of these necrotrophic pathogens has encountered limited success due to the characteristics of their lifestyle. Here, we presented a transgenic pyramiding breeding strategy to achieve nine different resistance genes integrated in one transgenic maize line to combat different aspects of necrotrophic pathogens. These nine genes, selected from two different categories, plant defense response genes (Chi, Glu, Ace-AMP1, Tlp, Rs-AFP2, ZmPROPEP1 and Pti4), and anti-apoptosis genes (Iap and p35), were successfully transferred into maize and further implicated in resistance against the necrotrophic pathogens Rhizoctonia solani and Bipolaris maydis. Furthermore, the transgenic maize line 910, with high expression levels of the nine integrated genes, was selected from 49 lines. Under greenhouse and field trial conditions, line 910 showed significant resistance against maize sheath blight and southern corn leaf blight diseases. Higher-level resistance was obtained after the pyramiding of more resistance transgenes from different categories that function via different mechanisms. The present study provides a successful strategy for the management of necrotrophic pathogens.
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Affiliation(s)
- Xiang Zhu
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Jinfeng Zhao
- Millet Research Institute, Shanxi Academy of Agricultural Sciences, Changzhi, 046011, Shanxi Province, China
| | - Hafiz Muhammad Khalid Abbas
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Yunjun Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Street of Zhongguancun 12, Beijing, 100081, China
| | - Menglan Cheng
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Jue Huang
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Wenjuan Cheng
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Beibei Wang
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Cuiying Bai
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Guoying Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, South Street of Zhongguancun 12, Beijing, 100081, China
| | - Wubei Dong
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China.
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15
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Gilbert B, Bettgenhaeuser J, Upadhyaya N, Soliveres M, Singh D, Park RF, Moscou MJ, Ayliffe M. Components of Brachypodium distachyon resistance to nonadapted wheat stripe rust pathogens are simply inherited. PLoS Genet 2018; 14:e1007636. [PMID: 30265668 PMCID: PMC6161853 DOI: 10.1371/journal.pgen.1007636] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 08/15/2018] [Indexed: 11/19/2022] Open
Abstract
Phytopathogens have a limited range of host plant species that they can successfully parasitise ie. that they are adapted for. Infection of plants by nonadapted pathogens often results in an active resistance response that is relatively poorly characterised because phenotypic variation in this response often does not exist within a plant species, or is too subtle for genetic dissection. In addition, complex polygenic inheritance often underlies these resistance phenotypes and mutagenesis often does not impact upon this resistance, presumably due to genetic or mechanistic redundancy. Here it is demonstrated that phenotypic differences in the resistance response of Brachypodium distachyon to the nonadapted wheat stripe rust pathogen Puccinia striiformis f. sp. tritici (Pst) are genetically tractable and simply inherited. Two dominant loci were identified on B. distachyon chromosome 4 that each reduce attempted Pst colonisation compared with sib and parent lines without these loci. One locus (Yrr1) is effective against diverse Australian Pst isolates and present in two B. distachyon mapping families as a conserved region that was reduced to 5 candidate genes by fine mapping. A second locus, Yrr2, shows Pst race-specificity and encodes a disease resistance gene family typically associated with host plant resistance. These data indicate that some components of resistance to nonadapted pathogens are genetically tractable in some instances and may mechanistically overlap with host plant resistance to avirulent adapted pathogens.
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Affiliation(s)
- Brian Gilbert
- CSIRO Agriculture and Food, Clunies Ross Drive, Canberra, ACT, Australia
| | - Jan Bettgenhaeuser
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Narayana Upadhyaya
- CSIRO Agriculture and Food, Clunies Ross Drive, Canberra, ACT, Australia
| | - Melanie Soliveres
- CSIRO Agriculture and Food, Clunies Ross Drive, Canberra, ACT, Australia
| | - Davinder Singh
- University of Sydney, Plant Breeding Institute, Cobbitty, NSW, Australia
| | - Robert F. Park
- University of Sydney, Plant Breeding Institute, Cobbitty, NSW, Australia
| | - Matthew J. Moscou
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
- University of East Anglia, Norwich Research Park, Norwich, United Kingdom
| | - Michael Ayliffe
- CSIRO Agriculture and Food, Clunies Ross Drive, Canberra, ACT, Australia
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16
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Bettgenhaeuser J, Gardiner M, Spanner R, Green P, Hernández-Pinzón I, Hubbard A, Ayliffe M, Moscou MJ. The genetic architecture of colonization resistance in Brachypodium distachyon to non-adapted stripe rust (Puccinia striiformis) isolates. PLoS Genet 2018; 14:e1007637. [PMID: 30265666 PMCID: PMC6161849 DOI: 10.1371/journal.pgen.1007637] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 08/15/2018] [Indexed: 12/19/2022] Open
Abstract
Multilayered defense responses ensure that plants are hosts to only a few adapted pathogens in the environment. The host range of a plant pathogen depends on its ability to fully overcome plant defense barriers, with failure at any single step sufficient to prevent life cycle completion of the pathogen. Puccinia striiformis, the causal agent of stripe rust (=yellow rust), is an agronomically important obligate biotrophic fungal pathogen of wheat and barley. It is generally unable to complete its life cycle on the non-adapted wild grass species Brachypodium distachyon, but natural variation exists for the degree of hyphal colonization by Puccinia striiformis. Using three B. distachyon mapping populations, we identified genetic loci conferring colonization resistance to wheat-adapted and barley-adapted isolates of P. striiformis. We observed a genetic architecture composed of two major effect QTLs (Yrr1 and Yrr3) restricting the colonization of P. striiformis. Isolate specificity was observed for Yrr1, whereas Yrr3 was effective against all tested P. striiformis isolates. Plant immune receptors of the nucleotide binding, leucine-rich repeat (NB-LRR) encoding gene family are present at the Yrr3 locus, whereas genes of this family were not identified at the Yrr1 locus. While it has been proposed that resistance to adapted and non-adapted pathogens are inherently different, the observation of (1) a simple genetic architecture of colonization resistance, (2) isolate specificity of major and minor effect QTLs, and (3) NB-LRR encoding genes at the Yrr3 locus suggest that factors associated with resistance to adapted pathogens are also critical for non-adapted pathogens.
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Affiliation(s)
| | | | | | - Phon Green
- The Sainsbury Laboratory, Norwich, United Kingdom
| | | | - Amelia Hubbard
- National Institute of Agricultural Botany, Cambridge, United Kingdom
| | - Michael Ayliffe
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Canberra, Australian Capital Territory, Australia
| | - Matthew J. Moscou
- The Sainsbury Laboratory, Norwich, United Kingdom
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
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17
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Haghdoust R, Singh D, Garnica DP, Park RF, Dracatos PM. Isolate Specificity and Polygenic Inheritance of Resistance in Barley to Diverse Heterologous Puccinia striiformis Isolates. PHYTOPATHOLOGY 2018; 108:617-626. [PMID: 29271300 DOI: 10.1094/phyto-10-17-0345-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Barley is a host to Puccinia striiformis f. sp. hordei, and is an intermediate or near nonhost to the formae speciales adapted to wheat (P. striiformis f. sp. tritici) and to barley grass (P. striiformis f. sp. pseudo-hordei). The genetic basis of resistance to these forms of P. striiformis is not well understood. Accordingly, a recombinant inbred line (RIL) population was developed using a P. striiformis-susceptible accession (Biosaline-19) and the immune cultivar Pompadour. We investigated the genetic basis of resistance to four diverse P. striiformis isolates (P. striiformis f. sp. pseudo-hordei, and P. striiformis f. sp. tritici pathotypes 104 E137 A-, 134 E16 A+, and 64 E0 A-). and determined that the immunity in Pompadour at the seedling stage to the different P. striiformis isolates was due to quantitative trait loci (QTL) on chromosomes 1H, 3H, 5H, and 7H with both overlapping and distinct specificities. Further histological analysis confirmed the presence of isolate specificity. The RILs were also assessed in the field for resistance to P. striiformis f. sp. pseudo-hordei, P. striiformis f. sp. hordei, and the leaf rust pathogen (P. hordei) to identify pleiotropic QTL loci effective at the adult plant stage and determine whether the leaf rust resistance in Pompadour (Rph20) was also effective to P. striiformis. RILs that were seedling susceptible to P. striiformis f. sp. pseudo-hordei were resistant in the field, implicating the involvement of adult plant resistance (APR). Additional QTLs were identified on chromosome 7H at the same genetic position as Rph23 (APR to leaf rust), suggesting either pleiotropic resistance or the presence of a stripe rust resistance gene closely linked to or allelic with Rph23. Unlike many pleiotropic APR genes identified and isolated in wheat, our data suggest that the Rph20 locus does not confer resistance to the P. striiformis isolates used in this study (P. striiformis f. sp. hordei [χ2 (independence) = 2.47 P > 0.12] and P. striiformis f. sp. pseudo-hordei [χ2 (independence) = 0.42 P > 0.60]).
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Affiliation(s)
- R Haghdoust
- First, second, fourth, and fifth authors: The University of Sydney, Plant Breeding Institute, Cobbitty, Private Bag 4011, Narellan, NSW, 2567, Australia; and second author: CSIRO Plant Industries, GPO Box 1600, Canberra, ACT, 2601, Australia
| | - D Singh
- First, second, fourth, and fifth authors: The University of Sydney, Plant Breeding Institute, Cobbitty, Private Bag 4011, Narellan, NSW, 2567, Australia; and second author: CSIRO Plant Industries, GPO Box 1600, Canberra, ACT, 2601, Australia
| | - D P Garnica
- First, second, fourth, and fifth authors: The University of Sydney, Plant Breeding Institute, Cobbitty, Private Bag 4011, Narellan, NSW, 2567, Australia; and second author: CSIRO Plant Industries, GPO Box 1600, Canberra, ACT, 2601, Australia
| | - R F Park
- First, second, fourth, and fifth authors: The University of Sydney, Plant Breeding Institute, Cobbitty, Private Bag 4011, Narellan, NSW, 2567, Australia; and second author: CSIRO Plant Industries, GPO Box 1600, Canberra, ACT, 2601, Australia
| | - P M Dracatos
- First, second, fourth, and fifth authors: The University of Sydney, Plant Breeding Institute, Cobbitty, Private Bag 4011, Narellan, NSW, 2567, Australia; and second author: CSIRO Plant Industries, GPO Box 1600, Canberra, ACT, 2601, Australia
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18
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Bartaula R, Melo ATO, Connolly BA, Jin Y, Hale I. An interspecific barberry hybrid enables genetic dissection of non-host resistance to the stem rust pathogen Puccinia graminis. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:2483-2493. [PMID: 29529250 PMCID: PMC5920301 DOI: 10.1093/jxb/ery066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 02/15/2018] [Indexed: 05/28/2023]
Abstract
Stem rust, caused by Puccinia graminis (Pg), remains a devastating disease of wheat, and the emergence of new Pg races virulent on deployed resistance genes fuels the ongoing search for sources of durable resistance. Despite its intrinsic durability, non-host resistance (NHR) is largely unexplored as a protection strategy against Pg, partly due to the inherent challenge of developing a genetically tractable system within which NHR segregates. Here, we demonstrate that Pg's far less studied ancestral host, barberry (Berberis spp.), provides such a unique pathosystem. Characterization of a natural population of B. ×ottawensis, an interspecific hybrid of Pg-susceptible B. vulgaris and Pg-resistant B. thunbergii (Bt), reveals that this uncommon nothospecies can be used to dissect the genetic mechanism(s) of Pg-NHR exhibited by Bt. Artificial inoculation of a natural population of B. ×ottawensis accessions, verified via genotyping by sequencing to be first-generation hybrids, revealed 51% susceptible, 33% resistant, and 16% intermediate phenotypes. Characterization of a B. ×ottawensis full sib family excluded the possibility of maternal inheritance of the resistance. By demonstrating segregation of Pg-NHR in a hybrid population, this study challenges the assumed irrelevance of Bt to Pg epidemiology and lays a novel foundation for the genetic dissection of NHR to one of agriculture's most studied pathogens.
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Affiliation(s)
- Radhika Bartaula
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH, USA
| | - Arthur T O Melo
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH, USA
| | - Bryan A Connolly
- Department of Biology, Framingham State University, Framingham, MA, USA
| | - Yue Jin
- USDA-ARS Cereal Disease Laboratory, St. Paul, MN, USA
| | - Iago Hale
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH, USA
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Periyannan S, Milne RJ, Figueroa M, Lagudah ES, Dodds PN. An overview of genetic rust resistance: From broad to specific mechanisms. PLoS Pathog 2017; 13:e1006380. [PMID: 28704545 PMCID: PMC5509339 DOI: 10.1371/journal.ppat.1006380] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Sambasivam Periyannan
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Agriculture and Food, Canberra, Australian Capital Territory, Australia
- Research School of Biology, The Australian National University, Canberra Australian Capital Territory, Australia
| | - Ricky J. Milne
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Agriculture and Food, Canberra, Australian Capital Territory, Australia
| | - Melania Figueroa
- Department of Plant Pathology and The Stakman-Borlaug Center for Sustainable Plant Health, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Evans S. Lagudah
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Agriculture and Food, Canberra, Australian Capital Territory, Australia
| | - Peter N. Dodds
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Agriculture and Food, Canberra, Australian Capital Territory, Australia
- * E-mail:
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Qureshi N, Bariana H, Forrest K, Hayden M, Keller B, Wicker T, Faris J, Salina E, Bansal U. Fine mapping of the chromosome 5B region carrying closely linked rust resistance genes Yr47 and Lr52 in wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2017; 130:495-504. [PMID: 27866228 DOI: 10.1007/s00122-016-2829-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 11/12/2016] [Indexed: 05/26/2023]
Abstract
Fine mapping of Yr47 and Lr52 in chromosome arm 5BS of wheat identified close linkage of the marker sun180 to both genes and its robustness for marker-assisted selection was demonstrated. The widely effective and genetically linked rust resistance genes Yr47 and Lr52 have previously been mapped in the short arm of chromosome 5B in two F3 populations (Aus28183/Aus27229 and Aus28187/Aus27229). The Aus28183/Aus27229 F3 population was advanced to generate an F6 recombinant inbred line (RIL) population to identify markers closely linked with Yr47 and Lr52. Diverse genomic resources including flow-sorted chromosome survey sequence contigs representing the orthologous region in Brachypodium distachyon, the physical map of chromosome arm 5BS, expressed sequence tags (ESTs) located in the 5BS6-0.81-1.00 deletion bin and resistance gene analog contigs of chromosome arm 5BS were used to develop markers to saturate the target region. Selective genotyping was also performed using the iSelect 90 K Infinium wheat SNP assay. A set of SSR, STS, gene-based and SNP markers were developed and genotyped on the Aus28183/Aus27229 RIL population. Yr47 and Lr52 are genetically distinct genes that mapped 0.4 cM apart in the RIL population. The SSR marker sun180 co-segregated with Lr52 and mapped 0.4 cM distal to Yr47. In a high resolution mapping population of 600 F2 genotypes Yr47 and Lr52 mapped 0.2 cM apart and marker sun180 was placed 0.4 cM distal to Lr52. The amplification of a different sun180 amplicon (195 bp) than that linked with Yr47 and Lr52 (200 bp) in 204 diverse wheat genotypes demonstrated its robustness for marker-assisted selection of these genes.
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Affiliation(s)
- Naeela Qureshi
- Faculty of Agriculture, Food and Natural Resources, The University of Sydney Plant Breeding Institute, Private Bag 4011, Narellan, NSW, 2567, Australia
| | - Harbans Bariana
- Faculty of Agriculture, Food and Natural Resources, The University of Sydney Plant Breeding Institute, Private Bag 4011, Narellan, NSW, 2567, Australia
| | - Kerrie Forrest
- Department of Economic Development, Jobs, Transport and Resources, La Trobe University AgriBio, Bundoora, VIC, 3083, Australia
| | - Matthew Hayden
- Department of Economic Development, Jobs, Transport and Resources, La Trobe University AgriBio, Bundoora, VIC, 3083, Australia
| | - Beat Keller
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Thomas Wicker
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Justin Faris
- USDA-ARS Cereal Crops Research Unit, Red River Valley Agricultural Research Center, 1605 Albrecht BLVD, Fargo, ND, 58102-2765, USA
| | - Elena Salina
- Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia
| | - Urmil Bansal
- Faculty of Agriculture, Food and Natural Resources, The University of Sydney Plant Breeding Institute, Private Bag 4011, Narellan, NSW, 2567, Australia.
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Bettgenhaeuser J, Corke FMK, Opanowicz M, Green P, Hernández-Pinzón I, Doonan JH, Moscou MJ. Natural Variation in Brachypodium Links Vernalization and Flowering Time Loci as Major Flowering Determinants. PLANT PHYSIOLOGY 2017; 173:256-268. [PMID: 27650449 PMCID: PMC5210709 DOI: 10.1104/pp.16.00813] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/18/2016] [Indexed: 05/20/2023]
Abstract
The domestication of plants is underscored by the selection of agriculturally favorable developmental traits, including flowering time, which resulted in the creation of varieties with altered growth habits. Research into the pathways underlying these growth habits in cereals has highlighted the role of three main flowering regulators: VERNALIZATION1 (VRN1), VRN2, and FLOWERING LOCUS T (FT). Previous reverse genetic studies suggested that the roles of VRN1 and FT are conserved in Brachypodium distachyon yet identified considerable ambiguity surrounding the role of VRN2 To investigate the natural diversity governing flowering time pathways in a nondomesticated grass, the reference B. distachyon accession Bd21 was crossed with the vernalization-dependent accession ABR6. Resequencing of ABR6 allowed the creation of a single-nucleotide polymorphism-based genetic map at the F4 stage of the mapping population. Flowering time was evaluated in F4:5 families in five environmental conditions, and three major loci were found to govern flowering time. Interestingly, two of these loci colocalize with the B. distachyon homologs of the major flowering pathway genes VRN2 and FT, whereas no linkage was observed at VRN1 Characterization of these candidates identified sequence and expression variation between the two parental genotypes, which may explain the contrasting growth habits. However, the identification of additional quantitative trait loci suggests that greater complexity underlies flowering time in this nondomesticated system. Studying the interaction of these regulators in B. distachyon provides insights into the evolutionary context of flowering time regulation in the Poaceae as well as elucidates the way humans have utilized the natural variation present in grasses to create modern temperate cereals.
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Affiliation(s)
- Jan Bettgenhaeuser
- The Sainsbury Laboratory, Norwich NR4 7UH, United Kingdom (J.B., P.G., I.H.-P., M.J.M.)
- Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, United Kingdom (F.M.K.C., J.H.D.)
- John Innes Centre, Norwich NR4 7UH, United Kingdom (F.M.K.C., M.O., J.H.D.); and
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (M.J.M.)
| | - Fiona M K Corke
- The Sainsbury Laboratory, Norwich NR4 7UH, United Kingdom (J.B., P.G., I.H.-P., M.J.M.)
- Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, United Kingdom (F.M.K.C., J.H.D.)
- John Innes Centre, Norwich NR4 7UH, United Kingdom (F.M.K.C., M.O., J.H.D.); and
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (M.J.M.)
| | - Magdalena Opanowicz
- The Sainsbury Laboratory, Norwich NR4 7UH, United Kingdom (J.B., P.G., I.H.-P., M.J.M.)
- Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, United Kingdom (F.M.K.C., J.H.D.)
- John Innes Centre, Norwich NR4 7UH, United Kingdom (F.M.K.C., M.O., J.H.D.); and
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (M.J.M.)
| | - Phon Green
- The Sainsbury Laboratory, Norwich NR4 7UH, United Kingdom (J.B., P.G., I.H.-P., M.J.M.)
- Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, United Kingdom (F.M.K.C., J.H.D.)
- John Innes Centre, Norwich NR4 7UH, United Kingdom (F.M.K.C., M.O., J.H.D.); and
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (M.J.M.)
| | - Inmaculada Hernández-Pinzón
- The Sainsbury Laboratory, Norwich NR4 7UH, United Kingdom (J.B., P.G., I.H.-P., M.J.M.)
- Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, United Kingdom (F.M.K.C., J.H.D.)
- John Innes Centre, Norwich NR4 7UH, United Kingdom (F.M.K.C., M.O., J.H.D.); and
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (M.J.M.)
| | - John H Doonan
- The Sainsbury Laboratory, Norwich NR4 7UH, United Kingdom (J.B., P.G., I.H.-P., M.J.M.);
- Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, United Kingdom (F.M.K.C., J.H.D.);
- John Innes Centre, Norwich NR4 7UH, United Kingdom (F.M.K.C., M.O., J.H.D.); and
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (M.J.M.)
| | - Matthew J Moscou
- The Sainsbury Laboratory, Norwich NR4 7UH, United Kingdom (J.B., P.G., I.H.-P., M.J.M.);
- Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, United Kingdom (F.M.K.C., J.H.D.);
- John Innes Centre, Norwich NR4 7UH, United Kingdom (F.M.K.C., M.O., J.H.D.); and
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (M.J.M.)
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Zhao J, Yang Y, Yang D, Cheng Y, Jiao M, Zhan G, Zhang H, Wang J, Zhou K, Huang L, Kang Z. Characterization and Genetic Analysis of Rice Mutant crr1 Exhibiting Compromised Non-host Resistance to Puccinia striiformis f. sp. tritici ( Pst). FRONTIERS IN PLANT SCIENCE 2016; 7:1822. [PMID: 27965705 PMCID: PMC5127839 DOI: 10.3389/fpls.2016.01822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 11/18/2016] [Indexed: 05/12/2023]
Abstract
Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of wheat in China. Rapid change to virulence following release of resistant cultivars necessitates ongoing discovery and exploitation of new resistance resources. Considerable effort has been directed at non-host resistance (NHR) which is believed to be durable. In the present study we identified rice mutant crr1 (compromised resistance to rust 1) that exhibited compromised NHR to Pst. Compared with wild type rice variety Nipponbare, crr1 mutant displayed a threefold increase in penetration rate by Pst, and enhanced hyphal growth. The pathogen also developed haustoria in crr1 mesophyll cells, but failed to sporulate. The response to the adapted rice pathogen Magnaporthe oryzae was unchanged in crr1 relative to the wild type. Several defense-related genes involved in the SA- and JA-mediated defense pathways response and in phytoalexin synthesis (such as OsPR1a, OsLOX1, and OsCPS4) were more rapidly and strongly induced in infected crr1 leaves than in the wild type, suggesting that other layers of defense are still in effect. Genetic analysis and mapping located the mutant loci at a region between markers ID14 and RM25792, which cover about 290 kb genome sequence on chromosome 10. Further fine mapping and cloning of the locus should provide further insights into NHR to rust fungi in rice, and may reveal new strategies for improving rust resistance in wheat.
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Affiliation(s)
- Jing Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
| | - Yuheng Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
| | - Donghe Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
| | - Yulin Cheng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
| | - Min Jiao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
| | - Gangming Zhan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
| | - Hongchang Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F UniversityYangling, China
| | - Junyi Wang
- Shaanxi Rice Research Institute, Hanzhong Agricultural Science InstituteHanzhong, China
| | - Kai Zhou
- Shaanxi Rice Research Institute, Hanzhong Agricultural Science InstituteHanzhong, China
| | - Lili Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F UniversityYangling, China
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Li K, Hegarty J, Zhang C, Wan A, Wu J, Guedira GB, Chen X, Muñoz-Amatriaín M, Fu D, Dubcovsky J. Fine mapping of barley locus Rps6 conferring resistance to wheat stripe rust. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2016; 129:845-859. [PMID: 26875072 PMCID: PMC4799263 DOI: 10.1007/s00122-015-2663-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/22/2015] [Indexed: 05/22/2023]
Abstract
KEY MESSAGE Barley resistance to wheat stripe rust has remained effective for a long time and, therefore, the genes underlying this resistance can be a valuable tool to engineer durable resistance in wheat. Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is a major disease of wheat that is causing large economic losses in many wheat-growing regions of the world. Deployment of Pst resistance genes has been an effective strategy for controlling this pathogen, but many of these genes have been defeated by new Pst races. In contrast, genes providing resistance to this wheat pathogen in other grass species (nonhost resistance) have been more durable. Barley varieties (Hordeum vulgare ssp. vulgare) are predominately immune to wheat Pst, but we identified three accessions of wild barley (Hordeum vulgare ssp. spontaneum) that are susceptible to Pst. Using these accessions, we mapped a barley locus conferring resistance to Pst on the distal region of chromosome arm 7HL and designated it as Rps6. The detection of the same locus in the cultivated barley 'Tamalpais' and in the Chinese barley 'Y12' by an allelism test suggests that Rps6 may be a frequent component of barley intermediate host resistance to Pst. Using a high-density mapping population (>10,000 gametes) we precisely mapped Rps6 within a 0.14 cM region (~500 kb contig) that is colinear to regions in Brachypodium (<94 kb) and rice (<9 kb). Since no strong candidate gene was identified in these colinear regions, a dedicated positional cloning effort in barley will be required to identify Rps6. The identification of this and other barley genes conferring resistance to Pst can contribute to our understanding of the mechanisms for durable resistance against this devastating wheat pathogen.
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Affiliation(s)
- Kun Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, Shandong, China
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Joshua Hegarty
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Chaozhong Zhang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Anmin Wan
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164, USA
| | - Jiajie Wu
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Gina Brown Guedira
- USDA-ARS, Plant Science Research Unit, Department of Crop Science, North Carolina State University, Raleigh, NC, 27695, USA
| | - Xianming Chen
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164, USA
- USDA-ARS, Wheat Genetics, Quality, Physiology, and Disease Research Unit, Pullman, WA, 99164, USA
| | - María Muñoz-Amatriaín
- Department of Botany and Plant Sciences, University of California, Riverside, CA, 92521, USA
| | - Daolin Fu
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
| | - Jorge Dubcovsky
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
- Howard Hughes Medical Institute, Chevy Chase, MD, 20815, USA.
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