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Malik AS, Sharma NK, Chandra AK, Kumar P, Tyagi S, Raghunandan K, Murukan N, Mallick N, Jha SK, Vinod. Conversion of superior bread wheat genotype HD3209 carrying Lr19/Sr25 into CMS line for development of rust-resistant wheat hybrids. Sci Rep 2024; 14:14112. [PMID: 38898132 PMCID: PMC11187221 DOI: 10.1038/s41598-024-65109-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 06/17/2024] [Indexed: 06/21/2024] Open
Abstract
Hybrid development is one of the most promising strategies for boosting crop yields. Parental lines used to create hybrids must have good per se performance and disease resistance for developing superior hybrids. Indian wheat line HD3209 was developed by introducing the rust resistance genes Lr19/Sr25 into the background of popular wheat variety HD2932. The wheat line HD3209 carrying Lr19/Sr25 has been successfully and rapidly converted to the CMS line A-HD3209, with 96.01% background genome recovery, based on selection for agro-morphological traits, rust resistance, pollen sterility, and foreground and background analyses utilizing SSR markers. The converted CMS line A-HD3209 was completely sterile and nearly identical to the recurrent parent HD3209. Based on high per se performance and rust resistance, the study concludes that the derived CMS line A-HD3209 is promising and can be employed successfully in hybrid development.
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Affiliation(s)
- Abhimanyu Singh Malik
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Nand Kishore Sharma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Ajay Kumar Chandra
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Parvesh Kumar
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Sandhya Tyagi
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - K Raghunandan
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Niranjana Murukan
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Shailendra Kumar Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Vinod
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
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Chowdhury S, Bansal S, Jha SK, Saharan MS, M N, K R, Choudhary MK, Agarwal P, Mallick N, Vinod. Characterization and identification of sources of rust resistance in Triticum militinae derivatives. Sci Rep 2024; 14:9408. [PMID: 38658671 PMCID: PMC11043457 DOI: 10.1038/s41598-024-59902-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024] Open
Abstract
Triticum militinae (2n = 4X = 28, AtAtGG), belonging to the secondary gene pool of wheat, is known to carry resistance to many diseases. Though some disease resistance genes were reported from T. timopheevii, the closest wild relative of T. militinae, there are no reports from T. militinae. Twenty-one T. militinae Derivatives (TMD lines) developed at the Division of Genetics, IARI, New Delhi, were evaluated for leaf and stripe rusts at seedling and adult plant stages. Eight TMD lines (6-4, 6-5, 11-6, 12-4, 12-8, 12-12, 13-7 and 13-9) showed seedling resistance to both leaf and stripe rusts while six TMD lines (7-5, 7-6, 11-5, 13-1, 13-3 and 13-4) showed seedling resistance to leaf rust but adult plant resistance to stripe rust and three TMD lines (9-1, 9-2 and 15) showed seedling resistance to leaf rust but susceptibility to stripe rust. Three TMD lines (2-7, 2-8 and 6-1) with adult plant resistance to leaf and stripe rusts were found to carry the known gene Lr34/Yr18. Ten TMD lines (7-5, 7-6, 9-1, 9-2, 11-5, 11-6, 12-12, 12-4, 12-8, and 15) with seedling resistance to leaf rust, showing absence of known genes Lr18 and Lr50 with linked markers requires further confirmation by the test of allelism studies. As not a single stripe rust resistance gene has been reported from T. militinae or its close relative T. timpopheevii, all the 8 TMD lines (6-4, 6-5, 11-6,12-4, 12-8, 12-12, 13-7 and 13-9) identified of carrying seedling resistance to stripe rust and 3 TMD lines (13-1, 13-3 and 13-4) identified of carrying adult plant resistance to stripe rust are expected to carry unknown genes. Also, all the TMD lines were found to be cytologically stable and thus can be used in inheritance and mapping studies.
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Affiliation(s)
- Saikat Chowdhury
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Shreshtha Bansal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Shailendra K Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - M S Saharan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Niranjana M
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Raghunandan K
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Manish K Choudhary
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Priyanka Agarwal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Vinod
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
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Xu S, Lyu Z, Zhang N, Li M, Wei X, Gao Y, Cheng X, Ge W, Li X, Bao Y, Yang Z, Ma X, Wang H, Kong L. Genetic mapping of the wheat leaf rust resistance gene Lr19 and development of translocation lines to break its linkage with yellow pigment. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:200. [PMID: 37639002 DOI: 10.1007/s00122-023-04425-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 07/24/2023] [Indexed: 08/29/2023]
Abstract
KEY MESSAGE The leaf rust resistance gene Lr19, which is present on the long arm of chromosome 7E1 in Thinopyrum ponticum, was mapped within a 0.3-cM genetic interval, and translocation lines were developed to break its linkage with yellow pigmentation The leaf rust resistance locus Lr19, which was transferred to wheat (Triticum aestivum) from its relative Thinopyrum ponticum in 1966, still confers broad resistance to most known races of the leaf rust pathogen Puccinia triticina (Pt) worldwide. However, this gene has not previously been fine-mapped, and its tight linkage with a gene causing yellow pigmentation has limited its application in bread wheat breeding. In this study, we genetically mapped Lr19 using a bi-parental population from a cross of two wheat-Th. ponticum substitution lines, the Lr19-carrying line 7E1(7D) and the leaf rust-susceptible line 7E2(7D). Genetic analysis of the F2 population and the F2:3 families showed that Lr19 was a single dominant gene. Genetic markers allowed the gene to be mapped within a 0.3-cM interval on the long arm of Th. ponticum chromosome 7E1, flanked by markers XsdauK3734 and XsdauK2839. To reduce the size of the Th. ponticum chromosome segment carrying Lr19, the Chinese Spring Ph1b mutant was employed to promote recombination between the homoeologous chromosomes of the wheat chromosome 7D and the Th. ponticum chromosome 7E1. Two translocation lines with short Th. ponticum chromosome fragments carrying Lr19 were identified using the genetic markers closely linked to Lr19. Both translocation lines were resistant to 16 Pt races collected throughout China. Importantly, the linkage between Lr19 and yellow pigment content was broken in one of the lines. Thus, the Lr19 linked markers and translocation lines developed in this study are valuable resources in marker-assisted selection as part of common wheat breeding programs.
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Affiliation(s)
- Shoushen Xu
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Zhongfan Lyu
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Na Zhang
- College of Plant Protection, Technological Innovation Center for Biological Control Crop Diseases and Insect Pests of Hebei Province, Hebei Agricultural University, Baoding, 071001, Hebei, People's Republic of China
| | - Mingzhu Li
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Xinyi Wei
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Yuhang Gao
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Xinxin Cheng
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Wenyang Ge
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Xuefeng Li
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Yinguang Bao
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Zujun Yang
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 611731, Sichun, People's Republic of China
| | - Xin Ma
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Hongwei Wang
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China.
| | - Lingrang Kong
- National Key Laboratory of Wheat Improvement, Shandong Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China.
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Jabran M, Ali MA, Zahoor A, Muhae-Ud-Din G, Liu T, Chen W, Gao L. Intelligent reprogramming of wheat for enhancement of fungal and nematode disease resistance using advanced molecular techniques. FRONTIERS IN PLANT SCIENCE 2023; 14:1132699. [PMID: 37235011 PMCID: PMC10206142 DOI: 10.3389/fpls.2023.1132699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 04/19/2023] [Indexed: 05/28/2023]
Abstract
Wheat (Triticum aestivum L.) diseases are major factors responsible for substantial yield losses worldwide, which affect global food security. For a long time, plant breeders have been struggling to improve wheat resistance against major diseases by selection and conventional breeding techniques. Therefore, this review was conducted to shed light on various gaps in the available literature and to reveal the most promising criteria for disease resistance in wheat. However, novel techniques for molecular breeding in the past few decades have been very fruitful for developing broad-spectrum disease resistance and other important traits in wheat. Many types of molecular markers such as SCAR, RAPD, SSR, SSLP, RFLP, SNP, and DArT, etc., have been reported for resistance against wheat pathogens. This article summarizes various insightful molecular markers involved in wheat improvement for resistance to major diseases through diverse breeding programs. Moreover, this review highlights the applications of marker assisted selection (MAS), quantitative trait loci (QTL), genome wide association studies (GWAS) and the CRISPR/Cas-9 system for developing disease resistance against most important wheat diseases. We also reviewed all reported mapped QTLs for bunts, rusts, smuts, and nematode diseases of wheat. Furthermore, we have also proposed how the CRISPR/Cas-9 system and GWAS can assist breeders in the future for the genetic improvement of wheat. If these molecular approaches are used successfully in the future, they can be a significant step toward expanding food production in wheat crops.
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Affiliation(s)
- Muhammad Jabran
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Muhammad Amjad Ali
- Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan
| | - Adil Zahoor
- Department of Biotechnology, Chonnam National University, Yeosu, Republic of Korea
| | - Ghulam Muhae-Ud-Din
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Taiguo Liu
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wanquan Chen
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Li Gao
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Eckardt NA, Ainsworth EA, Bahuguna RN, Broadley MR, Busch W, Carpita NC, Castrillo G, Chory J, DeHaan LR, Duarte CM, Henry A, Jagadish SVK, Langdale JA, Leakey ADB, Liao JC, Lu KJ, McCann MC, McKay JK, Odeny DA, Jorge de Oliveira E, Platten JD, Rabbi I, Rim EY, Ronald PC, Salt DE, Shigenaga AM, Wang E, Wolfe M, Zhang X. Climate change challenges, plant science solutions. THE PLANT CELL 2023; 35:24-66. [PMID: 36222573 PMCID: PMC9806663 DOI: 10.1093/plcell/koac303] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Climate change is a defining challenge of the 21st century, and this decade is a critical time for action to mitigate the worst effects on human populations and ecosystems. Plant science can play an important role in developing crops with enhanced resilience to harsh conditions (e.g. heat, drought, salt stress, flooding, disease outbreaks) and engineering efficient carbon-capturing and carbon-sequestering plants. Here, we present examples of research being conducted in these areas and discuss challenges and open questions as a call to action for the plant science community.
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Affiliation(s)
| | - Elizabeth A Ainsworth
- USDA ARS Global Change and Photosynthesis Research Unit, Urbana, Illinois 61801, USA
| | - Rajeev N Bahuguna
- Centre for Advanced Studies on Climate Change, Dr Rajendra Prasad Central Agricultural University, Samastipur 848125, Bihar, India
| | - Martin R Broadley
- School of Biosciences, University of Nottingham, Nottingham, NG7 2RD, UK
- Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Wolfgang Busch
- Plant Molecular and Cellular Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA
| | - Nicholas C Carpita
- Biosciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Gabriel Castrillo
- School of Biosciences, University of Nottingham, Nottingham, NG7 2RD, UK
- Future Food Beacon of Excellence, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Joanne Chory
- Plant Molecular and Cellular Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, California 92037, USA
| | | | - Carlos M Duarte
- Red Sea Research Center (RSRC) and Computational Bioscience Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Amelia Henry
- International Rice Research Institute, Rice Breeding Innovations Platform, Los Baños, Laguna 4031, Philippines
| | - S V Krishna Jagadish
- Department of Plant and Soil Science, Texas Tech University, Lubbock, Texas 79410, USA
| | - Jane A Langdale
- Department of Biology, University of Oxford, Oxford, OX1 3RB, UK
| | - Andrew D B Leakey
- Department of Plant Biology, Department of Crop Sciences, and Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Illinois 61801, USA
| | - James C Liao
- Institute of Biological Chemistry, Academia Sinica, Taipei 11528, Taiwan
| | - Kuan-Jen Lu
- Institute of Biological Chemistry, Academia Sinica, Taipei 11528, Taiwan
| | - Maureen C McCann
- Biosciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - John K McKay
- Department of Agricultural Biology, Colorado State University, Fort Collins, Colorado 80523, USA
| | - Damaris A Odeny
- The International Crops Research Institute for the Semi-Arid Tropics–Eastern and Southern Africa, Gigiri 39063-00623, Nairobi, Kenya
| | | | - J Damien Platten
- International Rice Research Institute, Rice Breeding Innovations Platform, Los Baños, Laguna 4031, Philippines
| | - Ismail Rabbi
- International Institute of Tropical Agriculture (IITA), PMB 5320 Ibadan, Oyo, Nigeria
| | - Ellen Youngsoo Rim
- Department of Plant Pathology and the Genome Center, University of California, Davis, California 95616, USA
| | - Pamela C Ronald
- Department of Plant Pathology and the Genome Center, University of California, Davis, California 95616, USA
- Innovative Genomics Institute, Berkeley, California 94704, USA
| | - David E Salt
- School of Biosciences, University of Nottingham, Nottingham, NG7 2RD, UK
- Future Food Beacon of Excellence, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Alexandra M Shigenaga
- Department of Plant Pathology and the Genome Center, University of California, Davis, California 95616, USA
| | - Ertao Wang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Marnin Wolfe
- Auburn University, Dept. of Crop Soil and Environmental Sciences, College of Agriculture, Auburn, Alabama 36849, USA
| | - Xiaowei Zhang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
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Mallick N, Jha SK, Agarwal P, Kumar S, Mall A, M N, Choudhary MK, Chandra AK, Bansal S, Saharan MS, Sharma JB. Marker-assisted transfer of leaf and stripe rust resistance from Triticum turgidum var. durum cv. Trinakria to wheat variety HD2932. Front Genet 2022; 13:941287. [PMID: 36035125 PMCID: PMC9403539 DOI: 10.3389/fgene.2022.941287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/04/2022] [Indexed: 11/22/2022] Open
Abstract
A marker-assisted backcrossing program initiated to transfer leaf rust resistance gene LrTrk from Triticum turgidum cv. Trinakria to hexaploid wheat variety HD2932 cotransferred a stripe rust resistance gene, YrTrk, along with LrTrk. The cross of hexaploid recurrent parent HD2932 with tetraploid donor parent Trinakria produced pentaploid F1 plants. F1s were backcrossed with recurrent parent HD2932 to produce BC1F1 generation. Foreground and background selection was conducted in each backcross generation to identify plants for backcrossing or selfing. While foreground selection for LrTrk was carried out with linked and validated molecular marker Xgwm234, for background selection, 86 polymorphic SSR markers from the A and B genomes were used. Single selected plants from BC1F1 and BC2F1 generations backcrossed and selfed to produce BC2F1and BC2F2 generations, respectively. Background selection resulted in 83.72%, 91.86%, and 98.25% of RPG recovery in BC1F1, BC2F1, and BC2F2 generations, respectively. A total of 27 plants with LrTrk in homozygous state were identified in BC2F2 generation and selfed to produce 27 BC2F3 NILs. All the NILs were tested for leaf and stripe rust resistance at the seedling stage using seven Puccinia triticina and one Puccinia striiformis f.sp. tritici rust pathotypes. All the 27 NILs were found to be resistant to both leaf and stripe rust pathotypes. So, these NILs are designated to carry leaf and stripe rust resistance genes LrTrk/YrTrk.
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Affiliation(s)
- Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Shailendra K Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Priyanka Agarwal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Sachin Kumar
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Anchal Mall
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
- Department of Genetics and Tree Propagation, Forest Research Institute, Dehradun, India
| | - Niranjana M
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Manish K Choudhary
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Ajay Kumar Chandra
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Shreshtha Bansal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - M S Saharan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - J B Sharma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Nutrient Homeostasis of Aegilops Accessions Differing in B Tolerance Level under Boron Toxic Growth Conditions. BIOLOGY 2022; 11:biology11081094. [PMID: 35892950 PMCID: PMC9331359 DOI: 10.3390/biology11081094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/14/2022] [Accepted: 07/20/2022] [Indexed: 11/16/2022]
Abstract
Boron (B) is a crucial microelement for several biological processes in plants; however, it becomes hazardous when present in excess in the soil. B toxicity adversely affects the wheat yield all around the world, particularly in the arid and semiarid regions. Aegilops, the nearest wild wheat relatives, could be an efficient source to develop B toxicity tolerance in modern cultivars. However, to potentially utilize these species, it is necessary to understand the underlying mechanisms that are involved in providing them tolerance. Other than hampering cellular and physiological activities, high B inhibits the uptake of nutrients in wheat plants that lead to nutrients deficiency causing a hindered growth. Thus, it is crucial to determine the effect of B toxicity on nutrient uptake and finally, to understand the role of nutrient homeostasis in developing the adaptive mechanism in tolerant species. Unfortunately, none of the studies to date has explored the effect of high B supply on the nutrient uptake in B toxicity tolerant wild wheat species. In this study, we explored the effect of 1 mM B (toxic B), and 10 mM B (very toxic B) B on the nutrient uptake in 19 Aegilops genotypes differing in B tolerance in contrast to Bolal 2973, the familiar B tolerant genotype. The obtained outcomes suggested a significant association between the B toxicity tolerance and the level of nutrient uptake in different genotypes. The B toxicity tolerant genotypes, Ab2 (TGB 026219, A. biuncialis genotype) and Ac4 (TGB 000107, A. columnaris genotype) were clustered together in the nutrient homeostasis-based heat map. Though B toxicity mostly had an inhibitory effect on the uptake of nutrients in root-shoot tissues, the tolerant genotypes revealed an increase in nutrient uptake under B toxicity in contrast with Control. The study directs towards future research where the role of external supply of few nutrients in enhancing the B toxicity tolerance of susceptible genotypes can be studied. Moreover, the genotype-dependent variation in the nutrient profile of the studied Aegilops genotypes under high B suggested that increasing number of Aegilops germplasm should be screened for B toxicity tolerance for their successful inclusion in the pre-breeding programs focusing on this issue.
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Mallick N, Jha SK, Agarwal P, Mall A, M. N, Kumar S, Choudhary MK, Bansal S, Saharan MS, Sharma JB. Marker-Assisted Improvement of Bread Wheat Variety HD2967 for Leaf and Stripe Rust Resistance. PLANTS (BASEL, SWITZERLAND) 2022; 11:1152. [PMID: 35567153 PMCID: PMC9103291 DOI: 10.3390/plants11091152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 06/15/2023]
Abstract
The mega wheat variety HD2967 was improved for leaf and stripe rust resistance by marker-assisted backcross breeding. After its release in 2011, HD2967 became susceptible to stripe rust and moderately susceptible to leaf rust. The leaf rust resistance gene LrTrk was transferred into HD2967 from the durum wheat genotype Trinakria. Then, HD2967 was crossed with Trinakria to produce F1 plant foreground selection for LrTrk and background selection for the recurrent parent genotype was carried out in BC1F1, BC2F1 and BC2F2 generations. Foreground selection was carried out with the linked marker Xgwm234, while polymorphic SSR markers between parents were used for background selection. Background selection resulted in the rapid recovery of the recurrent parent genome. A morphological evaluation of 6 near isogenic lines (NILs)-2 resistant to leaf and stripe rust, and 4 resistant to leaf rust only-showed no significant differences in yields among NILs and the recurrent parent HD2967. All of the 6 NILs showed the presence of 2NS/2AS translocation, carrying the linked genes Lr37/Sr38/Yr17 present in HD2967 and the targeted leaf rust resistance gene LrTrk. Two NILs also showed additional resistance to stripe rust. Therefore, these NILs with rust resistance and an at par yielding ability of H2967 can replace the susceptible cultivar HD2967 to reduce yield losses due to disease.
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Affiliation(s)
- Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
| | - Shailendra K. Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
| | - Priyanka Agarwal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
| | - Anchal Mall
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
- Department of Genetics & Tree Propagation, Forest Research Institute, Dehradun 248006, India
| | - Niranjana M.
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
| | - Sachin Kumar
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
| | - Manish K. Choudhary
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
| | - Shreshtha Bansal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
| | - M. S. Saharan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India;
| | - J. B. Sharma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; (S.K.J.); (P.A.); (A.M.); (N.M.); (S.K.); (M.K.C.); (S.B.); (J.B.S.)
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9
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Kumar K, Jan I, Saripalli G, Sharma PK, Mir RR, Balyan HS, Gupta PK. An Update on Resistance Genes and Their Use in the Development of Leaf Rust Resistant Cultivars in Wheat. Front Genet 2022; 13:816057. [PMID: 35432483 PMCID: PMC9008719 DOI: 10.3389/fgene.2022.816057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/28/2022] [Indexed: 11/19/2022] Open
Abstract
Wheat is one of the most important cereal crops in the world. The production and productivity of wheat is adversely affected by several diseases including leaf rust, which can cause yield losses, sometimes approaching >50%. In the present mini-review, we provide updated information on (i) all Lr genes including those derived from alien sources and 14 other novel resistance genes; (ii) a list of QTLs identified using interval mapping and MTAs identified using GWAS (particular those reported recently i.e., after 2018) and their association with known Lr genes; (iii) introgression/pyramiding of individual Lr genes in commercial/prominent cultivars from 18 different countries including India. Challenges and future perspectives of breeding for leaf rust resistance are also provided at the end of this mini-review. We believe that the information in this review will prove useful for wheat geneticists/breeders, not only in the development of leaf rust-resistant wheat cultivars, but also in the study of molecular mechanism of leaf rust resistance in wheat.
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Affiliation(s)
- Kuldeep Kumar
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - Irfat Jan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- Division of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Wadura, India
| | - Gautam Saripalli
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - P. K. Sharma
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - Reyazul Rouf Mir
- Division of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Wadura, India
| | - H. S. Balyan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - P. K. Gupta
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- *Correspondence: P. K. Gupta, ,
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10
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Keilwagen J, Lehnert H, Berner T, Badaeva E, Himmelbach A, Börner A, Kilian B. Detecting major introgressions in wheat and their putative origins using coverage analysis. Sci Rep 2022; 12:1908. [PMID: 35115645 PMCID: PMC8813953 DOI: 10.1038/s41598-022-05865-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 01/12/2022] [Indexed: 12/11/2022] Open
Abstract
Introgressions from crop wild relatives (CWRs) have been used to introduce beneficial traits into cultivated plants. Introgressions have traditionally been detected using cytological methods. Recently, single nucleotide polymorphism (SNP)-based methods have been proposed to detect introgressions in crosses for which both parents are known. However, for unknown material, no method was available to detect introgressions and predict the putative donor species. Here, we present a method to detect introgressions and the putative donor species. We demonstrate the utility of this method using 10 publicly available wheat genome sequences and identify nine major introgressions. We show that the method can distinguish different introgressions at the same locus. We trace introgressions to early wheat cultivars and show that natural introgressions were utilised in early breeding history and still influence elite lines today. Finally, we provide evidence that these introgressions harbour resistance genes.
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Affiliation(s)
| | | | | | - Ekaterina Badaeva
- N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia.,The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences (ICG SB RAS), Novosibirsk, Russia
| | - Axel Himmelbach
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
| | - Andreas Börner
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
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11
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Keilwagen J, Lehnert H, Berner T, Badaeva E, Himmelbach A, Börner A, Kilian B. Detecting major introgressions in wheat and their putative origins using coverage analysis. Sci Rep 2022; 12:1908. [PMID: 35115645 DOI: 10.21203/rs.3.rs-910879/v1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 01/12/2022] [Indexed: 05/26/2023] Open
Abstract
Introgressions from crop wild relatives (CWRs) have been used to introduce beneficial traits into cultivated plants. Introgressions have traditionally been detected using cytological methods. Recently, single nucleotide polymorphism (SNP)-based methods have been proposed to detect introgressions in crosses for which both parents are known. However, for unknown material, no method was available to detect introgressions and predict the putative donor species. Here, we present a method to detect introgressions and the putative donor species. We demonstrate the utility of this method using 10 publicly available wheat genome sequences and identify nine major introgressions. We show that the method can distinguish different introgressions at the same locus. We trace introgressions to early wheat cultivars and show that natural introgressions were utilised in early breeding history and still influence elite lines today. Finally, we provide evidence that these introgressions harbour resistance genes.
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Affiliation(s)
| | | | | | - Ekaterina Badaeva
- N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
- The Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences (ICG SB RAS), Novosibirsk, Russia
| | - Axel Himmelbach
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
| | - Andreas Börner
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
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12
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Hurali DT, Bhurta R, Tyagi S, Sathee L, Sandeep AB, Singh D, Mallick N, Vinod, Jha SK. Analysis of NIA and GSNOR family genes and nitric oxide homeostasis in response to wheat-leaf rust interaction. Sci Rep 2022; 12:803. [PMID: 35039546 PMCID: PMC8764060 DOI: 10.1038/s41598-021-04696-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 11/09/2021] [Indexed: 11/08/2022] Open
Abstract
Nitric oxide (NO) modulates plant response to biotic and abiotic stresses by S-nitrosylation-mediated protein post-translational modification. Nitrate reductase (NR) and S-nitrosoglutathione reductase (GSNOR) enzymes are essential for NO synthesis and the maintenance of Nitric oxide/S-nitroso glutathione (NO/GSNO) homeostasis, respectively. S-nitrosoglutathione, formed by the S-nitrosylation reaction of NO with glutathione, plays a significant physiological role as the mobile reservoir of NO. The genome-wide analysis identified nine NR (NIA) and three GSNOR genes in the wheat genome. Phylogenic analysis revealed that the nine NIA genes +were clustered into four groups and the 3 GSNORs into two groups. qRT-PCR expression profiling of NIAs and GSNORs was done in Chinese spring (CS), a leaf rust susceptible wheat line showing compatible interaction, and Transfer (TR), leaf rust-resistant wheat line showing incompatible interaction, post-inoculation with leaf rust pathotype 77-5 (121-R-63). All the NIA genes showed upregulation during incompatible interaction in comparison with the compatible reaction. The GSNOR genes showed a variable pattern of expression: the TaGSNOR1 showed little change, whereas TaGSNOR2 showed higher expression during the incompatible response. TaGSNOR3 showed a rise of expression both in compatible and incompatible reactions. Before inoculation and after 72 h of pathogen inoculation, NO localization was studied in both compatible and incompatible reactions. The S-nitrosothiol accumulation, NR, and glutathione reductase activity showed a consistent increase in the incompatible interactions. The results demonstrate that both NR and GSNOR plays significant role in defence against the leaf rust pathogen in wheat by modulating NO homeostasis or signalling.
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Affiliation(s)
- Deepak T Hurali
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Ramesh Bhurta
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Sandhya Tyagi
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Lekshmy Sathee
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Adavi B Sandeep
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Dalveer Singh
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Vinod
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Shailendra K Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
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13
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Khan MK, Pandey A, Hamurcu M, Avsaroglu ZZ, Ozbek M, Omay AH, Elbasan F, Omay MR, Gokmen F, Topal A, Gezgin S. Variability in Physiological Traits Reveals Boron Toxicity Tolerance in Aegilops Species. FRONTIERS IN PLANT SCIENCE 2021; 12:736614. [PMID: 34777419 PMCID: PMC8585849 DOI: 10.3389/fpls.2021.736614] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/30/2021] [Indexed: 05/31/2023]
Abstract
Boron (B) is an important micronutrient required for the normal growth and development of plants. However, its excess in the soil causes severe damage to plant tissues, which affects the final yield. Wheat, one of the main staple crops, has been reported to be largely affected by B toxicity stress in arid and semi-arid regions of the world. The prevalence of B toxicity stress can be addressed by utilizing wild wheat genotypes with a variant level of stress tolerance. Wild wheat relatives have been identified as a prominent source of several abiotic stress-tolerant genes. However, Aegilops species in the tertiary gene pool of wheat have not been well exploited as a source of B toxicity tolerance. This study explores the root and shoot growth, proline induction, and extent of lipid peroxidation in 19 Aegilops accessions comprising 6 different species and the B-tolerant check wheat cultivar Bolal 2973 grown under Control (3.1 μM B), toxic (1 mM B), and highly toxic (10 mM B) B stress treatment. B toxicity stress had a more decisive impact on growth parameters as compared to the malondialdehyde (MDA) and proline content. The obtained results suggested that even the genotypes with high shoot B (SB) accumulation can be tolerant to B toxicity stress, and the mechanism of B redistribution in leaves should be studied in detail. It has been proposed that the studied Aegilops accessions can be potentially used for genetically improving the B toxicity-tolerance trait due to a high level of variation in the response toward high B toxicity. Though a number of accessions showed suppression in the root and shoot growth, very few accessions with stress adaptive plasticity to B toxicity stress leading to an improvement of shoot growth parameters could be determined. The two accessions, Aegilops biuncialis accession TGB 026219 and Aegilops columnaris accession TGB 000107, were identified as the potential genotypes with B toxicity stress tolerance and can be utilized for developing a pre-breeding material in B tolerance-based breeding programs.
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Affiliation(s)
- Mohd. Kamran Khan
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Anamika Pandey
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Mehmet Hamurcu
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Zuhal Zeynep Avsaroglu
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Merve Ozbek
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Ayse Humeyra Omay
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Fevzi Elbasan
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Makbule Rumeysa Omay
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Fatma Gokmen
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Ali Topal
- Department of Field Crops, Faculty of Agriculture, Selcuk University, Konya, Turkey
| | - Sait Gezgin
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
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14
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Zhang Q, Wei W, Zuansun X, Zhang S, Wang C, Liu N, Qiu L, Wang W, Guo W, Ma J, Peng H, Hu Z, Sun Q, Xie C. Fine Mapping of the Leaf Rust Resistance Gene Lr65 in Spelt Wheat 'Altgold'. FRONTIERS IN PLANT SCIENCE 2021; 12:666921. [PMID: 34262578 PMCID: PMC8274547 DOI: 10.3389/fpls.2021.666921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 05/04/2021] [Indexed: 06/13/2023]
Abstract
Wheat leaf rust (also known as brown rust), caused by the fungal pathogen Puccinia triticina Erikss. (Pt), is one by far the most troublesome wheat disease worldwide. The exploitation of resistance genes has long been considered as the most effective and sustainable method to control leaf rust in wheat production. Previously the leaf rust resistance gene Lr65 has been mapped to the distal end of chromosome arm 2AS linked to molecular marker Xbarc212. In this study, Lr65 was delimited to a 0.8 cM interval between flanking markers Alt-64 and AltID-11, by employing two larger segregating populations obtained from crosses of the resistant parent Altgold Rotkorn (ARK) with the susceptible parents Xuezao and Chinese Spring (CS), respectively. 24 individuals from 622 F2 plants of crosses between ARK and CS were obtained that showed the recombination between Lr65 gene and the flanking markers Alt-64 and AltID-11. With the aid of the CS reference genome sequence (IWGSC RefSeq v1.0), one SSR marker was developed between the interval matched to the Lr65-flanking marker and a high-resolution genetic linkage map was constructed. The Lr65 was finally located to a region corresponding to 60.11 Kb of the CS reference genome. The high-resolution genetic linkage map founded a solid foundation for the map-based cloning of Lr65 and the co-segregating marker will facilitate the marker-assisted selection (MAS) of the target gene.
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15
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Dinkar V, Jha SK, Mallick N, Niranjana M, Agarwal P, Sharma JB, Vinod. Molecular mapping of a new recessive wheat leaf rust resistance gene originating from Triticum spelta. Sci Rep 2020; 10:22113. [PMID: 33335131 PMCID: PMC7746701 DOI: 10.1038/s41598-020-78679-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/27/2020] [Indexed: 11/09/2022] Open
Abstract
TSD276-2, a wheat genetic stock derived from the cross Agra Local/T. spelta 276 showed broad spectrum resistance against leaf rust pathogen. Genetic analysis was undertaken using F1, F2, F2:3 and BC1F1 generations derived from the cross TSD276-2/Agra Local. The results revealed a single recessive gene for leaf rust resistance, tentatively named as LrTs276-2, in TSD276-2. Molecular mapping of leaf rust resistance gene LrTs276-2 in TSD276-2 was done using SNP-based PCR and SSR markers. For Bulked Segregant Analysis (BSA), two bulks viz. resistant bulk and susceptible bulk, and the parents TSD276-2 and Agra Local were genotyped for SNPs using AFFYMETRIX 35K Wheat Breeders' AXIOM array. T. spelta 276 was also genotyped and used as a check. BSA indicated that the gene for leaf rust resistance in TSD276-2 is located on chromosome arm 1DS. Putatively linked SNPs on chromosome arm 1DS were converted into PCR-based markers. Polymorphic SSR markers on chromosome arm 1DS were also identified. Final linkage map was constructed using one SNP-based PCR and three SSR markers. The rust reaction and chromosomal location suggest that LrTs276-2 is a new leaf rust resistance gene which may be useful in broadening the genetic base of leaf rust resistance in wheat.
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Affiliation(s)
- Vishal Dinkar
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - S K Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - M Niranjana
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Priyanka Agarwal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - J B Sharma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Vinod
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
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