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Khan MA, You MP, Norton SL, Barbetti MJ. Screening of Diverse Lupinus spp. Highlights New Resistances to Sclerotinia sclerotiorum. PLANT DISEASE 2024:PDIS03240506RE. [PMID: 38568787 DOI: 10.1094/pdis-03-24-0506-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Stem rot caused by Sclerotinia sclerotiorum is a serious and sometimes devastating disease of lupin (Lupinus spp.). A total of 236 lupin accessions from across 12 Lupinus species were screened against the prevalent S. sclerotiorum isolate MBRS-1 (pathotype 76). L. angustifolius accession 21655 and L. albus var. albus accession 20589 showed immune and "near-immune" responses, respectively. Thirteen accessions of L. angustifolius, three accessions each of L. albus and L. albus var. albus, and a single accession each of L. albus var. graecus, L. mutabilis, L. palaestinus, and L. pilosus (totaling ∼4%) showed a highly resistant (HR) response. A further 19 accessions of L. angustifolius, 2 accessions each of L. albus and L. pilosus, and a single accession of L. mutabilis (totaling ∼10%) showed a resistant (R) response. The reactions of 16 (15 L. angustifolius, 1 L. digitatus) of these 236 accessions were also compared with their reactions to a different isolate, Walkaway-3 (WW-3; pathotype 10). Against this isolate, five L. angustifolius accessions showed an HR response and four showed an R response, and the L. digitatus accession showed a moderate resistance response. Overall, isolate WW-3 caused significantly (P < 0.05) smaller lesions than MBRS-1 across tested accessions in common. In addition, 328 plants in a "wild" naturalized field population of L. cosentinii were screened in situ in the field against isolate MBRS-1. Five (∼1.5%) of the 328 plants of wild lupin showed an immune response, 63 (∼19%) showed an HR response, and 146 (∼45%) showed an R response. We believe this is the first examination of diverse Lupinus spp. germplasm responses to a prevalent pathotype of S. sclerotiorum. Lupin genotypes exhibiting high-level resistance to Sclerotinia stem rot identified in this study can be used as parental lines for crosses in lupin breeding programs and/or directly as improved cultivars to reduce the adverse impact of this disease on lupin crops.
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Affiliation(s)
- Muhammad Azam Khan
- School of Agriculture and Environment and the UWA Institute of Agriculture, The University of Western Australia, Crawley, WA 6009, Australia
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad 38000, Pakistan
| | - Ming Pei You
- School of Agriculture and Environment and the UWA Institute of Agriculture, The University of Western Australia, Crawley, WA 6009, Australia
| | - Sally L Norton
- Australian Grains Genebank, Horsham, VIC 3400, Australia
| | - Martin J Barbetti
- School of Agriculture and Environment and the UWA Institute of Agriculture, The University of Western Australia, Crawley, WA 6009, Australia
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Mwape VW, Khoo KHP, Chen K, Khentry Y, Newman TE, Derbyshire MC, Mather DE, Kamphuis LG. Identification of Sclerotinia stem rot resistance quantitative trait loci in a chickpea ( Cicer arietinum) recombinant inbred line population. FUNCTIONAL PLANT BIOLOGY : FPB 2022; 49:634-646. [PMID: 35339205 DOI: 10.1071/fp21216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Sclerotinia stem rot (SSR), caused by Sclerotinia sclerotiorum , is one of the most economically devastating diseases in chickpea (Cicer arietinum L.). No complete resistance is available in chickpea to this disease, and the inheritance of partial resistance is not understood. Two hundred F7 recombinant inbred lines (RILs) derived from a cross between a partially resistant variety PBA HatTrick, and a highly susceptible variety Kyabra were characterised for their responses to SSR inoculation. Quantitative trait locus (QTL) analysis was conducted for the area under the disease progress curve (AUDPC) after RIL infection with S. sclerotiorum . Four QTLs on chromosomes, Ca4 (qSSR4-1, qSSR4-2), Ca6 (qSSR6-1) and Ca7 (qSSR7-1), individually accounted for between 4.2 and 15.8% of the total estimated phenotypic variation for the response to SSR inoculation. Candidate genes located in these QTL regions are predicted to be involved in a wide range of processes, including phenylpropanoid biosynthesis, plant-pathogen interaction, and plant hormone signal transduction. This is the first study investigating the inheritance of resistance to S. sclerotiorum in chickpea. Markers associated with the identified QTLs could be employed for marker-assisted selection in chickpea breeding.
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Affiliation(s)
- Virginia W Mwape
- Centre for Crop Disease Management, Curtin University, Bentley, WA 6102, Australia; and Commonwealth Scientific and Industrial Research Organization, Agriculture and Food, Floreat, WA 6913, Australia
| | - Kelvin H P Khoo
- School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Urrbrae, SA 5064, Australia
| | - Kefei Chen
- Statistics for the Australian Grains Industry - West, Curtin University, Bentley, WA 6102, Australia
| | - Yuphin Khentry
- Centre for Crop Disease Management, Curtin University, Bentley, WA 6102, Australia
| | - Toby E Newman
- Centre for Crop Disease Management, Curtin University, Bentley, WA 6102, Australia
| | - Mark C Derbyshire
- Centre for Crop Disease Management, Curtin University, Bentley, WA 6102, Australia
| | - Diane E Mather
- School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Urrbrae, SA 5064, Australia
| | - Lars G Kamphuis
- Centre for Crop Disease Management, Curtin University, Bentley, WA 6102, Australia; and Commonwealth Scientific and Industrial Research Organization, Agriculture and Food, Floreat, WA 6913, Australia
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Mwape VW, Mobegi FM, Regmi R, Newman TE, Kamphuis LG, Derbyshire MC. Analysis of differentially expressed Sclerotinia sclerotiorum genes during the interaction with moderately resistant and highly susceptible chickpea lines. BMC Genomics 2021; 22:333. [PMID: 33964897 PMCID: PMC8106195 DOI: 10.1186/s12864-021-07655-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/27/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Sclerotinia sclerotiorum, the cause of Sclerotinia stem rot (SSR), is a host generalist necrotrophic fungus that can cause major yield losses in chickpea (Cicer arietinum) production. This study used RNA sequencing to conduct a time course transcriptional analysis of S. sclerotiorum gene expression during chickpea infection. It explores pathogenicity and developmental factors employed by S. sclerotiorum during interaction with chickpea. RESULTS During infection of moderately resistant (PBA HatTrick) and highly susceptible chickpea (Kyabra) lines, 9491 and 10,487 S. sclerotiorum genes, respectively, were significantly differentially expressed relative to in vitro. Analysis of the upregulated genes revealed enrichment of Gene Ontology biological processes, such as oxidation-reduction process, metabolic process, carbohydrate metabolic process, response to stimulus, and signal transduction. Several gene functional categories were upregulated in planta, including carbohydrate-active enzymes, secondary metabolite biosynthesis clusters, transcription factors and candidate secreted effectors. Differences in expression of four S. sclerotiorum genes on varieties with different levels of susceptibility were also observed. CONCLUSION These findings provide a framework for a better understanding of S. sclerotiorum interactions with hosts of varying susceptibility levels. Here, we report for the first time on the S. sclerotiorum transcriptome during chickpea infection, which could be important for further studies on this pathogen's molecular biology.
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Affiliation(s)
- Virginia W Mwape
- Centre for Crop and Disease Management, Curtin University, Bentley, WA, 6102, Australia. .,Commonwealth Scientific and Industrial Research Organization, Agriculture and Food, Floreat, WA, Australia.
| | - Fredrick M Mobegi
- Centre for Crop and Disease Management, Curtin University, Bentley, WA, 6102, Australia
| | - Roshan Regmi
- Centre for Crop and Disease Management, Curtin University, Bentley, WA, 6102, Australia.,Commonwealth Scientific and Industrial Research Organization, Agriculture and Food, Floreat, WA, Australia
| | - Toby E Newman
- Centre for Crop and Disease Management, Curtin University, Bentley, WA, 6102, Australia
| | - Lars G Kamphuis
- Centre for Crop and Disease Management, Curtin University, Bentley, WA, 6102, Australia. .,Commonwealth Scientific and Industrial Research Organization, Agriculture and Food, Floreat, WA, Australia.
| | - Mark C Derbyshire
- Centre for Crop and Disease Management, Curtin University, Bentley, WA, 6102, Australia
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O’Sullivan CA, Belt K, Thatcher LF. Tackling Control of a Cosmopolitan Phytopathogen: Sclerotinia. FRONTIERS IN PLANT SCIENCE 2021; 12:707509. [PMID: 34490008 PMCID: PMC8417578 DOI: 10.3389/fpls.2021.707509] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/27/2021] [Indexed: 05/14/2023]
Abstract
Phytopathogenic members of the Sclerotinia genus cause widespread disease across a broad range of economically important crops. In particular, Sclerotinia sclerotiorum is considered one of the most destructive and cosmopolitan of plant pathogens. Here, were review the epidemiology of the pathogen, its economic impact on agricultural production, and measures employed toward control of disease. We review the broad approaches required to tackle Sclerotinia diseases and include cultural practices, crop genetic resistance, chemical fungicides, and biological controls. We highlight the benefits and drawbacks of each approach along with recent advances within these controls and future strategies.
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Affiliation(s)
| | | | - Louise F. Thatcher
- CSIRO Agriculture and Food, Acton, ACT, Australia
- *Correspondence: Louise F. Thatcher,
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