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Costa LSAS, de Faria MR, Chiaramonte JB, Mendes LW, Sepo E, de Hollander M, Fernandes JMC, Carrión VJ, Bettiol W, Mauchline TH, Raaijmakers JM, Mendes R. Repeated exposure of wheat to the fungal root pathogen Bipolaris sorokiniana modulates rhizosphere microbiome assembly and disease suppressiveness. ENVIRONMENTAL MICROBIOME 2023; 18:85. [PMID: 38053159 PMCID: PMC10696838 DOI: 10.1186/s40793-023-00529-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/19/2023] [Indexed: 12/07/2023]
Abstract
BACKGROUND Disease suppressiveness of soils to fungal root pathogens is typically induced in the field by repeated infections of the host plant and concomitant changes in the taxonomic composition and functional traits of the rhizosphere microbiome. Here, we studied this remarkable phenomenon for Bipolaris sorokiniana in two wheat cultivars differing in resistance to this fungal root pathogen. RESULTS The results showed that repeated exposure of the susceptible wheat cultivar to the pathogen led to a significant reduction in disease severity after five successive growth cycles. Surprisingly, the resistant wheat cultivar, initially included as a control, showed the opposite pattern with an increase in disease severity after repeated pathogen exposure. Amplicon analyses revealed that the bacterial families Chitinophagaceae, Anaerolineaceae and Nitrosomonadaceae were associated with disease suppressiveness in the susceptible wheat cultivar; disease suppressiveness in the resistant wheat cultivar was also associated with Chitinophagaceae and a higher abundance of Comamonadaceae. Metagenome analysis led to the selection of 604 Biosynthetic Gene Clusters (BGCs), out of a total of 2,571 identified by AntiSMASH analysis, that were overrepresented when the soil entered the disease suppressive state. These BGCs are involved in the biosynthesis of terpenes, non-ribosomal peptides, polyketides, aryl polyenes and post-translationally modified peptides. CONCLUSION Combining taxonomic and functional profiling we identified key changes in the rhizosphere microbiome during disease suppression. This illustrates how the host plant relies on the rhizosphere microbiome as the first line of defense to fight soil-borne pathogens. Microbial taxa and functions identified here can be used in novel strategies to control soil-borne fungal pathogens.
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Affiliation(s)
- Lilian S Abreu Soares Costa
- Embrapa Environment, Jaguariúna, Brazil
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands
| | | | | | - Lucas W Mendes
- Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil
| | - Edis Sepo
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands
| | - Mattias de Hollander
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands
| | | | - Víctor J Carrión
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands
- Institute of Biology, Leiden University, Leiden, The Netherlands
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
- Departamento de Microbiología y Protección de Cultivos, Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Málaga, Spain
| | | | - Tim H Mauchline
- Sustainable Soils and Crops, Rothamsted Research, Harpenden, UK
| | - Jos M Raaijmakers
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands
- Institute of Biology, Leiden University, Leiden, The Netherlands
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Pang J, Huang C, Wang Y, Wen X, Deng P, Li T, Wang C, Liu X, Chen C, Zhao J, Ji W. Molecular Cytological Analysis and Specific Marker Development in Wheat-Psathyrostachys huashanica Keng 3Ns Additional Line with Elongated Glume. Int J Mol Sci 2023; 24:ijms24076726. [PMID: 37047699 PMCID: PMC10094845 DOI: 10.3390/ijms24076726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/07/2023] Open
Abstract
Psathyrostachys huashanica Keng (2n = 2x = 14, NsNs) is an excellent gene resource for wheat breeding, which is characterized by early maturity, low plant height, and disease resistance. The wheat-P. huashanica derivatives were created by the elite genes of P. huashanica and permeate into common wheat through hybridization. Among them, a long-glume material 20JH1155 was identified, with larger grains and longer spike than its parents. In the present study, the methods of cytological observation, GISH, and sequential FISH analysis showed that 20JH1155 contained 21 pairs of wheat chromosomes and a pair of P. huashanica. There were some differences in 5A and 7B chromosomes between 20JH1155 and parental wheat 7182. Molecular marker, FISH, and sequence cloning indicated 20JH1155 alien chromosomes were 3Ns of P. huashanica. In addition, differentially expressed genes during immature spikelet development of 20JH1155 and 7182 and predicted transcription factors were obtained by transcriptome sequencing. Moreover, a total of 7 makers derived from Ph#3Ns were developed from transcriptome data. Taken together, the wheat-P. huashanica derived line 20JH1155 provides a new horizon on distant hybridization of wheat and accelerates the utilization of genes of P. huashanica.
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Affiliation(s)
- Jingyu Pang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Chenxi Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Yuesheng Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Xinyu Wen
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Pingchuan Deng
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Tingdong Li
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Changyou Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Xinlun Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Chunhuan Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Jixin Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
| | - Wanquan Ji
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Xianyang 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Xianyang 712100, China
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3
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Thirkell TJ, Grimmer M, James L, Pastok D, Allary T, Elliott A, Paveley N, Daniell T, Field KJ. Variation in mycorrhizal growth response among a spring wheat mapping population shows potential to breed for symbiotic benefit. Food Energy Secur 2022; 11:e370. [PMID: 35865673 PMCID: PMC9286679 DOI: 10.1002/fes3.370] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 11/09/2021] [Accepted: 12/15/2021] [Indexed: 12/12/2022] Open
Affiliation(s)
- Tom J. Thirkell
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
| | | | | | - Daria Pastok
- School of Biology Centre for Plant Sciences University of Leeds Leeds UK
| | - Théa Allary
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
| | - Ashleigh Elliott
- School of Biology Centre for Plant Sciences University of Leeds Leeds UK
| | | | - Tim Daniell
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
| | - Katie J. Field
- Plants, Photosynthesis and Soil School of Biosciences University of Sheffield Sheffield UK
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4
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Gruet C, Muller D, Moënne-Loccoz Y. Significance of the Diversification of Wheat Species for the Assembly and Functioning of the Root-Associated Microbiome. Front Microbiol 2022; 12:782135. [PMID: 35058901 PMCID: PMC8764353 DOI: 10.3389/fmicb.2021.782135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 11/30/2021] [Indexed: 12/15/2022] Open
Abstract
Wheat, one of the major crops in the world, has had a complex history that includes genomic hybridizations between Triticum and Aegilops species and several domestication events, which resulted in various wild and domesticated species (especially Triticum aestivum and Triticum durum), many of them still existing today. The large body of information available on wheat-microbe interactions, however, was mostly obtained without considering the importance of wheat evolutionary history and its consequences for wheat microbial ecology. This review addresses our current understanding of the microbiome of wheat root and rhizosphere in light of the information available on pre- and post-domestication wheat history, including differences between wild and domesticated wheats, ancient and modern types of cultivars as well as individual cultivars within a given wheat species. This analysis highlighted two major trends. First, most data deal with the taxonomic diversity rather than the microbial functioning of root-associated wheat microbiota, with so far a bias toward bacteria and mycorrhizal fungi that will progressively attenuate thanks to the inclusion of markers encompassing other micro-eukaryotes and archaea. Second, the comparison of wheat genotypes has mostly focused on the comparison of T. aestivum cultivars, sometimes with little consideration for their particular genetic and physiological traits. It is expected that the development of current sequencing technologies will enable to revisit the diversity of the wheat microbiome. This will provide a renewed opportunity to better understand the significance of wheat evolutionary history, and also to obtain the baseline information needed to develop microbiome-based breeding strategies for sustainable wheat farming.
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Affiliation(s)
| | | | - Yvan Moënne-Loccoz
- Univ Lyon, Université Claude Bernard Lyon 1, Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), VetAgro Sup, UMR 5557 Ecologie Microbienne, Villeurbanne, France
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5
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Hammond‐Kosack MC, King R, Kanyuka K, Hammond‐Kosack KE. Exploring the diversity of promoter and 5'UTR sequences in ancestral, historic and modern wheat. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:2469-2487. [PMID: 34289221 PMCID: PMC8633512 DOI: 10.1111/pbi.13672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 06/15/2021] [Accepted: 07/08/2021] [Indexed: 05/25/2023]
Abstract
A data set of promoter and 5'UTR sequences of homoeo-alleles of 459 wheat genes that contribute to agriculturally important traits in 95 ancestral and commercial wheat cultivars is presented here. The high-stringency myBaits technology used made individual capture of homoeo-allele promoters possible, which is reported here for the first time. Promoters of most genes are remarkably conserved across the 83 hexaploid cultivars used with <7 haplotypes per promoter and 21% being identical to the reference Chinese Spring. InDels and many high-confidence SNPs are located within predicted plant transcription factor binding sites, potentially changing gene expression. Most haplotypes found in the Watkins landraces and a few haplotypes found in Triticum monococcum, germplasms hitherto not thought to have been used in modern wheat breeding, are already found in many commercial hexaploid wheats. The full data set which is useful for genomic and gene function studies and wheat breeding is available at https://rrescloud.rothamsted.ac.uk/index.php/s/DMCFDu5iAGTl50u/authenticate.
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Affiliation(s)
| | - Robert King
- Department of Computational and Analytical SciencesRothamsted ResearchHarpendenUK
| | - Kostya Kanyuka
- Department of Biointeractions and Crop ProtectionRothamsted ResearchHarpendenUK
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6
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Saberi-Riseh R, Moradi-Pour M. A novel encapsulation of Streptomyces fulvissimus Uts22 by spray drying and its biocontrol efficiency against Gaeumannomyces graminis, the causal agent of take-all disease in wheat. PEST MANAGEMENT SCIENCE 2021; 77:4357-4364. [PMID: 33960105 DOI: 10.1002/ps.6469] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/02/2021] [Accepted: 05/07/2021] [Indexed: 05/07/2023]
Abstract
BACKGROUND Wheat is a valuable food source that is exposed to many diseases that reduce its quantity and quality. One of the most important diseases affecting wheat is take-all, caused by Gaeumannomyces graminis var. tritici. The application of bacterial inoculants into the soil can increase plant nutrient absorption and enhance the efficiency of probiotic bacteria. For increased beneficial bacteria efficiency, the encapsulation technique has been used in agriculture. RESULTS The results of Fourier transform infrared (FTIR) and X-ray diffraction analysis (XRD) indicated that the prepared formulation is a mixture of gellan and chitosan. Using SEM, the spherical structure of the microcapsules was confirmed. It was observed that the increase in bacterial release was gradual, and the highest amount of bacteria was released (109 CFU mL-1 ) on the 50th day. Greenhouse experiments showed that plants treated with S. fulvissimus Uts22 microcapsules had the highest efficiency with 90% disease control. Moreover, the highest fresh and dry weights of roots and shoots were observed in this treatment. CONCLUSION In this study, a new type of formulation aiming at controlling wheat take-all disease was developed through bacterial and nanoparticles loaded chitosan- gellan gum microcapsules with spray drying method. This formulation has many advantages, such as a large surface area and high internal porosity and increased water-holding capacity, while it also provides a proper habitat for bacteria to increase colonization rates and offers protection of the soil. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Roohallah Saberi-Riseh
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Mojde Moradi-Pour
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
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7
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Palma-Guerrero J, Chancellor T, Spong J, Canning G, Hammond J, McMillan VE, Hammond-Kosack KE. Take-All Disease: New Insights into an Important Wheat Root Pathogen. TRENDS IN PLANT SCIENCE 2021; 26:836-848. [PMID: 33752966 DOI: 10.1016/j.tplants.2021.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 01/27/2021] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Take-all disease, caused by the fungal root pathogen Gaeumannomyces tritici, is considered to be the most important root disease of wheat worldwide. Here we review the advances in take-all research over the last 15 years, focusing on the identification of new sources of genetic resistance in wheat relatives and the role of the microbiome in disease development. We also highlight recent breakthroughs in the molecular interactions between G. tritici and wheat, including genome and transcriptome analyses. These new findings will aid the development of novel control strategies against take-all disease. In light of this growing understanding, the G. tritici-wheat interaction could provide a model study system for root-infecting fungal pathogens of cereals.
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Affiliation(s)
- Javier Palma-Guerrero
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK.
| | - Tania Chancellor
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Jess Spong
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Gail Canning
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Jess Hammond
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Vanessa E McMillan
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK
| | - Kim E Hammond-Kosack
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, UK.
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8
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Castro Tapia MP, Madariaga Burrows RP, Ruiz Sepúlveda B, Vargas Concha M, Vera Palma C, Moya-Elizondo EA. Antagonistic Activity of Chilean Strains of Pseudomonas protegens Against Fungi Causing Crown and Root Rot of Wheat ( Triticum aestivum L.). FRONTIERS IN PLANT SCIENCE 2020; 11:951. [PMID: 32670339 PMCID: PMC7330486 DOI: 10.3389/fpls.2020.00951] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
Seed treatments with antagonistic bacteria could reduce the severity of crown and root rot diseases in wheat crops. The objective of this study was to evaluate the potential antagonistic activity of a bacterial consortium of three Chilean strains of Pseudomonas protegens against the wheat crown and root rot pathogens Gaeumannomyces graminis var. tritici, Rhizoctonia cerealis, and Fusarium culmorum. Two field experiments were carried out on artificially infested soil during two consecutive seasons (2016-2017 and 2017-2018) in an Andisol soil of southern Chile. Control treatments (not inoculated with fungi) were also included. Each treatment included a seed treatment of spring wheat cv. Pantera-INIA with and without the bacterial consortium. Both phytosanitary damage (incidence and severity) and agronomic components were evaluated. Bacterial populations with the phlD+ gene in the wheat plant rhizosphere during anthesis state (Z6) were also quantified. In both seasons, infection severity decreased by an average of 16.8% in seeds treated with P. protegens consortium, while yield components such as spikes m-1 and number of grains per spike increased. The use of antagonistic bacteria resulted in a total yield increase only during the first experimental season (P < 0.05). In general, accumulated rainfall influenced the antagonistic effect of the consortium of P. protegens strains, accounting for the differences observed between the two seasons. The results suggest that this P. protegens consortium applied on seeds can promote plant growth and protect wheat crops against crown and root rot pathogens in Southern Chile under field conditions.
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Affiliation(s)
- María Paz Castro Tapia
- Departamento de Producción Vegetal, Facultad de Agronomía, Universidad de Concepción, Chillán, Chile
| | | | - Braulio Ruiz Sepúlveda
- Departamento de Producción Vegetal, Facultad de Agronomía, Universidad de Concepción, Chillán, Chile
| | - Marisol Vargas Concha
- Departamento de Producción Vegetal, Facultad de Agronomía, Universidad de Concepción, Chillán, Chile
| | - Carola Vera Palma
- National Agricultural Research Institute, INIA Quilamapu, Chillán, Chile
| | - Ernesto A. Moya-Elizondo
- Departamento de Producción Vegetal, Facultad de Agronomía, Universidad de Concepción, Chillán, Chile
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9
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Bai S, Yuan F, Zhang H, Zhang Z, Zhao J, Yang Q, Wu J, Chen X. Characterization of the Wheat- Psathyrostachys huashania Keng 2Ns/2D Substitution Line H139: A Novel Germplasm With Enhanced Resistance to Wheat Take-All. FRONTIERS IN PLANT SCIENCE 2020; 11:233. [PMID: 32210998 PMCID: PMC7077511 DOI: 10.3389/fpls.2020.00233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/14/2020] [Indexed: 05/30/2023]
Abstract
Take-all is a devastating soil-borne disease that affects wheat production. The continuous generation of disease-resistance germplasm is an important aspect of the management of this pathogen. In this study, we characterized the wheat-Psathyrostachys huashania Keng (P. huashania)-derived progeny H139 that exhibits significantly improved resistance to wheat take-all disease compared with its susceptible parent 7182. Sequential genomic in situ hybridization (GISH) and multicolor fluorescence in situ hybridization (mc-FISH) analyses revealed that H139 is a stable wheat-P. huashania disomic substitution line lacking wheat chromosome 2D. Expressed sequence tag-sequence tagged site (EST-STS) marker and Wheat Axiom 660K Genotyping Array analysis further revealed that H139 was a novel wheat-P. huashania 2Ns/2D substitution line. In addition, the H139 line was shown to be cytologically stable with a dwarf phenotype and increased spikelet number. These results indicate that H139, with its enhanced wheat take-all disease resistance and desirable agronomic traits, provides valuable genetic resources for wheat chromosome engineering breeding.
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Affiliation(s)
- Shengsheng Bai
- Shaanxi Key Laboratory of Plant Genetic Engineering Breeding, College of Agronomy, Northwest A&F University, Yangling, China
| | - Fengping Yuan
- Shaanxi Key Laboratory of Plant Genetic Engineering Breeding, College of Agronomy, Northwest A&F University, Yangling, China
| | - Hanbing Zhang
- Shaanxi Key Laboratory of Plant Genetic Engineering Breeding, College of Agronomy, Northwest A&F University, Yangling, China
| | - Zhenyue Zhang
- Shaanxi Key Laboratory of Plant Genetic Engineering Breeding, College of Agronomy, Northwest A&F University, Yangling, China
| | - Jixin Zhao
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, China
| | - Qunhui Yang
- Shaanxi Key Laboratory of Plant Genetic Engineering Breeding, College of Agronomy, Northwest A&F University, Yangling, China
| | - Jun Wu
- Shaanxi Key Laboratory of Plant Genetic Engineering Breeding, College of Agronomy, Northwest A&F University, Yangling, China
| | - Xinhong Chen
- Shaanxi Key Laboratory of Plant Genetic Engineering Breeding, College of Agronomy, Northwest A&F University, Yangling, China
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10
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McMillan VE, Canning G, Moughan J, White RP, Gutteridge RJ, Hammond-Kosack KE. Exploring the resilience of wheat crops grown in short rotations through minimising the build-up of an important soil-borne fungal pathogen. Sci Rep 2018; 8:9550. [PMID: 29934522 PMCID: PMC6015077 DOI: 10.1038/s41598-018-25511-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 03/29/2018] [Indexed: 11/27/2022] Open
Abstract
Given the increasing demand for wheat which is forecast, cropping of wheat in short rotations will likely remain a common practice. However, in temperate wheat growing regions the soil-borne fungal pathogen Gaeumannomyces tritici becomes a major constraint on productivity. In cultivar rotation field experiments on the Rothamsted Farm (Hertfordshire, UK) we demonstrated a substantial reduction in take-all disease and grain yield increases of up to 2.4 tonnes/ha when a low take-all inoculum building wheat cultivar was grown in the first year of wheat cropping. Phenotyping of 71 modern elite wheat cultivars for the take-all inoculum build-up trait across six diverse trial sites identified a few cultivars which exhibited a consistent lowering of take-all inoculum build-up. However, there was also evidence of a significant interaction effect between trial site and cultivar when a pooled Residual Maximum Likelihood (REML) procedure was conducted. There was no evidence of an unusual rooting phenotype associated with take-all inoculum build-up in two independent field experiments and a sand column experiment. Together our results highlight the complex interactions between wheat genotype, environmental conditions and take-all inoculum build-up. Further work is required to determine the underlying genetic and mechanistic basis of this important phenomenon.
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Affiliation(s)
- V E McMillan
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - G Canning
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - J Moughan
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - R P White
- Department of Computational and Analytical Sciences, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - R J Gutteridge
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - K E Hammond-Kosack
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK.
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11
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Osborne SJ, McMillan VE, White R, Hammond-Kosack KE. Elite UK winter wheat cultivars differ in their ability to support the colonization of beneficial root-infecting fungi. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:3103-3115. [PMID: 29648609 PMCID: PMC5972604 DOI: 10.1093/jxb/ery136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 04/05/2018] [Indexed: 06/08/2023]
Abstract
In numerous countries, Gaeumannomyces species, within the Magnaporthaceae family, have previously been implicated in the suppression of take-all root disease in wheat. A UK arable isolate collection (n=47) was gathered and shown to contain Gaeumannomyces hyphopodioides and an unnamed Magnaporthaceae species. A novel seedling pot bioassay revealed that both species had a similar ability to colonize cereal roots; however, rye (Secale cereale) was only poorly colonized by the Magnaporthaceae species. To evaluate the ability of 40 elite UK winter wheat cultivars to support soil inoculum of beneficial soil-dwelling fungi, two field experiments were carried out using a naturally infested arable site in south-east England. The elite cultivars grown in the first wheat situation differed in their ability to support G. hyphopodioides inoculum, measured by colonization on Hereward as the subsequent wheat in a seedling soil core bioassay. In addition, the root colonization ability of G. hyphopodioides was influenced by the choice of the second wheat cultivar. Nine cultivars supported the colonization of the beneficial root fungus. Our findings provide evidence of complex host genotype-G. hyphopodioides interactions occurring under field conditions. This new knowledge could provide an additional soil-based crop genetic management strategy to help combat take-all root disease.
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Affiliation(s)
- Sarah-Jane Osborne
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Vanessa E McMillan
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Rodger White
- Department of Computational and Analytical Systems, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Kim E Hammond-Kosack
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, UK
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Wang M, Zhang J, Wang L, Han L, Zhang X, Feng J. Optimization of Production Conditions for Protoplasts and Polyethylene Glycol-Mediated Transformation of Gaeumannomyces tritici. Molecules 2018; 23:E1253. [PMID: 29794975 PMCID: PMC6100196 DOI: 10.3390/molecules23061253] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 05/20/2018] [Accepted: 05/22/2018] [Indexed: 11/29/2022] Open
Abstract
Take-all, caused by Gaeumannomyces tritici, is one of the most important wheat root diseases worldwide, as it results in serious yield losses. In this study, G. tritici was transformed to express the hygromycin B phosphotransferase using a combined protoplast and polyethylene glycol (PEG)-mediated transformation technique. Based on a series of single-factor experimental results, three major factors-temperature, enzyme lysis time, and concentration of the lysing enzyme-were selected as the independent variables, which were optimized using the response surface methodology. A higher protoplast yield of 9.83 × 10⁷ protoplasts/mL was observed, and the protoplast vitality was also high, reaching 96.27% after optimization. Protoplasts were isolated under the optimal conditions, with the highest transformation frequency (46⁻54 transformants/μg DNA). Polymerase chain reaction and Southern blotting detection indicated that the genes of hygromycin phosphotransferase were successfully inserted into the genome of G. tritici. An optimised PEG-mediated protoplast transformation system for G. tritici was established. The techniques and procedures described will lay the foundation for establishing a good mutation library of G. tritici and could be used to transform other fungi.
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Affiliation(s)
- Mei Wang
- Research and Development Center of Biorational Pesticide, Northwest A&F University, Yangling 712100, China.
| | - Jie Zhang
- Research and Development Center of Biorational Pesticide, Northwest A&F University, Yangling 712100, China.
| | - Lanying Wang
- Research and Development Center of Biorational Pesticide, Northwest A&F University, Yangling 712100, China.
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
| | - Lirong Han
- Research and Development Center of Biorational Pesticide, Northwest A&F University, Yangling 712100, China.
| | - Xing Zhang
- Research and Development Center of Biorational Pesticide, Northwest A&F University, Yangling 712100, China.
- Engineering and Research Center of Biological Pesticide of Shaanxi Province, Yangling 712100, China.
| | - Juntao Feng
- Research and Development Center of Biorational Pesticide, Northwest A&F University, Yangling 712100, China.
- Engineering and Research Center of Biological Pesticide of Shaanxi Province, Yangling 712100, China.
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Ben-Abu Y, Beiles A, Flom D, Nevo E. Adaptive evolution of benzoxazinoids in wild emmer wheat, Triticum dicoccoides, at "Evolution Canyon", Mount Carmel, Israel. PLoS One 2018; 13:e0190424. [PMID: 29408917 PMCID: PMC5800564 DOI: 10.1371/journal.pone.0190424] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 12/14/2017] [Indexed: 01/10/2023] Open
Abstract
Background "Evolution Canyon" (ECI) at Lower Nahal Oren, Mount Carmel, Israel, is an optimal natural microscale model for unraveling evolution-in-action, highlighting the evolutionary processes of biodiversity evolution, adaptation, and incipient sympatric speciation. A major model organism in ECI is the tetraploid wild emmer wheat, Triticum dicoccoides (TD), the progenitor of cultivated emmer and durum wheat. TD displays dramatic interslope adaptive evolutionary divergence on the tropical, savannoid-hot and dry south-facing, "African" slope (AS), and on the temperate, forested, cool and humid, north-facing, "European" slope (ES), separated on average by 250 m. From the perspective of chemical evolution and metabolomics, it is important to unravel interslope divergence in biologically relevant secondary metabolites between the abutting slope populations. Here, in TD we examined hydroxamic acid (Hx), which is a family of secondary cereal metabolites, and plays a major role in defending the plant against fungi, insects and weeds. Results Our examination revealed that higher concentrations of DIBOA and DIMBOA were found in seedlings growing in the same greenhouse from seeds collected from the cool and humid forested ES, whereas the seedlings of seeds collected from the savannoid AS (both in root and shoot tissues), showed no DIMBOA. Remarkably, only DIBOA appears in both shoots and roots of the AS seedlings. It rises to a peak and then decreases in both organs and in seedlings from both slopes. The DIMBOA, which appears only in the ES seedlings, rises to a peak and decreases in the shoot, but increased and remained in a plateau in the root, till the end of the experiment. Conculsions/Significance The results suggest stronger genetic resistance of defense compounds DIBOA and DIMBOA against biotic stresses (fungi and other pathogens) by ES seedlings. However, AS seedlings responded earlier but were to the same biotic stresses. The genetic difference found in AS seedlings was caused by the main adaptive selection in AS, which was against climatic, abiotic stresses, and was weaker, or not at all, against biotic stresses. The distinct genetic interslope differences appear important and is very significant and are elaborated in the discussion.
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Affiliation(s)
- Yuval Ben-Abu
- Projects and Physics Section, Sapir Academic College, D.N. Hof Ashkelon, Israel
- * E-mail: (YBA); (EN)
| | - Avigdor Beiles
- Institute of Evolution, University of Haifa, Haifa, Israel
| | - Dvir Flom
- Department of Physics, Ben Gurion University of the Negev, Be'er Sheva, Israel
| | - Eviatar Nevo
- Institute of Evolution, University of Haifa, Haifa, Israel
- * E-mail: (YBA); (EN)
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14
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Wang M, Wang L, Han L, Zhang X, Feng J. The effect of carabrone on mitochondrial respiratory chain complexes inGaeumannomyces graminis. J Appl Microbiol 2017; 123:1100-1110. [DOI: 10.1111/jam.13554] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 07/07/2017] [Accepted: 07/27/2017] [Indexed: 01/01/2023]
Affiliation(s)
- M. Wang
- Research and Development Center of Biorational Pesticide; Northwest A&F University; Yangling 712100 Shaanxi China
| | - L. Wang
- Research and Development Center of Biorational Pesticide; Northwest A&F University; Yangling 712100 Shaanxi China
| | - L. Han
- Research and Development Center of Biorational Pesticide; Northwest A&F University; Yangling 712100 Shaanxi China
| | - X. Zhang
- Research and Development Center of Biorational Pesticide; Northwest A&F University; Yangling 712100 Shaanxi China
- Engineering and Research Center of Biological Pesticide of Shaanxi Province; Yangling 712100 Shaanxi China
| | - J. Feng
- Research and Development Center of Biorational Pesticide; Northwest A&F University; Yangling 712100 Shaanxi China
- Engineering and Research Center of Biological Pesticide of Shaanxi Province; Yangling 712100 Shaanxi China
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15
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Lahlali R, Kumar S, Wang L, Forseille L, Sylvain N, Korbas M, Muir D, Swerhone G, Lawrence JR, Fobert PR, Peng G, Karunakaran C. Cell Wall Biomolecular Composition Plays a Potential Role in the Host Type II Resistance to Fusarium Head Blight in Wheat. Front Microbiol 2016; 7:910. [PMID: 27445995 PMCID: PMC4921494 DOI: 10.3389/fmicb.2016.00910] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 05/27/2016] [Indexed: 11/13/2022] Open
Abstract
Fusarium head blight (FHB) is a serious disease of wheat worldwide. Cultivar resistance to FHB depends on biochemical factors that confine the pathogen spread in spikes. Breeding for cultivar resistance is considered the most practical way to manage this disease. In this study, different spectroscopy and microscopy techniques were applied to discriminate resistance in wheat genotypes against FHB. Synchrotron-based spectroscopy and imaging techniques, including focal plane array infrared and X-ray fluorescence (XRF) spectroscopy were used to understand changes in biochemical and nutrients in rachis following FHB infection. Sumai3 and Muchmore were used to represent resistant and susceptible cultivars to FHB, respectively, in this study. The histological comparison of rachis showed substantial differences in the cell wall thickness between the cultivars after infection. Synchrotron-based infrared imaging emphasized substantial difference in biochemical composition of rachis samples between the two cultivars prior to visible symptoms; in the resistant Sumai3, infrared bands representing lignin and hemicellulose were stronger and more persistent compared to the susceptible cultivar. These bands may be the candidates of biochemical markers for FHB resistance. Focal plane array infrared imaging (FPA) spectra from the rachis epidermis and vascular bundles revealed a new band (1710 cm(-1)) related to the oxidative stress on the susceptible cultivar only. XRF spectroscopy data revealed differences in nutrients composition between cultivars, and between controls and inoculated samples, with substantial increases observed for Ca, K, Mn, Fe, Zn, and Si in the resistant cultivar. These nutrients are related to cell wall stability, metabolic process, and plant defense mechanisms such as lignification pathway and callose deposition. The combination of cell wall composition and lignification plays a role in the mechanism of type II host resistance to FHB. Biochemical profiling using the synchrotron-based spectroscopy holds potential for screening wheat genotypes for FHB resistance.
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Affiliation(s)
| | | | - Lipu Wang
- National Research Council CanadaSaskatoon, SK, Canada
| | - Li Forseille
- National Research Council CanadaSaskatoon, SK, Canada
| | - Nicole Sylvain
- Department of Surgery, College of Medicine, University of SaskatchewanSaskatoon, SK, Canada
| | | | - David Muir
- Canadian Light SourceSaskatoon, SK, Canada
| | | | | | - Pierre R. Fobert
- National Research Council CanadaSaskatoon, SK, Canada
- National Research Council CanadaOttawa, ON, Canada
| | - Gary Peng
- Agriculture and Agri-Food Canada, Saskatoon Research CentreSaskatoon, SK, Canada
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Functionalized Buckyballs for Visualizing Microbial Species in Different States and Environments. Sci Rep 2015; 5:13685. [PMID: 26347365 PMCID: PMC4561912 DOI: 10.1038/srep13685] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 08/03/2015] [Indexed: 12/04/2022] Open
Abstract
To date, in situ visualization of microbial density has remained an open problem. Here, functionalized buckyballs (e.g., C60-pyrrolidine tris acid) are shown to be a versatile platform that allows internalization within a microorganism without either adhering to the cell wall and cell membrane or binding to a matrix substrate such as soil. These molecular probes are validated via multi-scale imaging, to show association with microorganisms via fluorescence microscopy, positive cellular uptake via electron microscopy, and non-specific binding to the substrates through a combination of fluorescence and autoradiography imaging. We also demonstrate that cysteine-functionalized C60-pyrrolidine tris acid can differentiate live and dead microorganisms.
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