1
|
Ragini R, Murukan N, Sekhon NK, Chugh C, Agarwal P, Yadav P, Mallick N, Jha SK, Iquebal MA, Tandon G, Verma A, Singh B, Jacob SR, Raghunandan K, Prabhu KV, Tomar SS, Vinod. Breaking the association between gametocidal gene(s) and leaf rust resistance gene ( LrS2427) in Triticum aestivum- Aegilops speltoides derivative by gamma irradiation. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2024; 44:54. [PMID: 39148502 PMCID: PMC11322474 DOI: 10.1007/s11032-024-01491-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 08/02/2024] [Indexed: 08/17/2024]
Abstract
Utilization of crop wild relatives of wheat can be very effective in building the genetic diversity to cater to the evolving strains of disease pathogens. Aegilops speltoides is a rich source of rust resistance genes however transferring those to wheat genome can be tedious due to co-transfer and preferential transmission of undesirable genes causing gametocidal activity. Such an unholy association was observed in Triticum aestivum-Ae. speltoides derivative line Sel. 2427 which possess the broad-spectrum leaf rust seedling resistance gene (LrS2427). Molecular analysis based on 35 K wheat breeder's array revealed the maximum percentage of Ae. speltoides genome introgression on homoeologous group 2. In situ hybridization studies revealed the presence of S genome in Sel. 2427, showing six translocations on four chromosomes. Karyotyping using repetitive probe (AAG)6 revealed that the two chromosomes involved are 2D and 2B. Genic regions causing gametocidal activity were identified by dissecting it into component traits and QTLs on 2D and 2B chromosomes were revealed in case of the trait seed shrivelling index. To break the inadvertent association of LrS2427 with gametocidal genes, F1(Agra Local X Sel. 2427) seeds were irradiated with gamma rays and stable leaf rust resistant mutants lacking gametocidal activity were developed. These mutants showed resistance to different races of leaf rust pathogen and showed superior agronomic performance as well. These mutants could be a great resource in wheat improvement for utilization of the leaf rust resistance gene LrS2427 without any yield penalty. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-024-01491-8.
Collapse
Affiliation(s)
- R. Ragini
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Niranjana Murukan
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Navpreet Kaur Sekhon
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Chetna Chugh
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Priyanka Agarwal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Prachi Yadav
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Shailendra Kumar Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Mir Asif Iquebal
- Division of Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Gitanjali Tandon
- Division of Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Aakriti Verma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Bhupinder Singh
- Division of Environment Science, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Sherry Rachel Jacob
- Division of Germplasm Conservation, ICAR-National Bureau of Plant Genetic Resources, New Delhi, India
| | - K. Raghunandan
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Kumble Vinod Prabhu
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | | | - Vinod
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| |
Collapse
|
2
|
Said M, Gaál E, Farkas A, Molnár I, Bartoš J, Doležel J, Cabrera A, Endo TR. Gametocidal genes: from a discovery to the application in wheat breeding. FRONTIERS IN PLANT SCIENCE 2024; 15:1396553. [PMID: 38711610 PMCID: PMC11070591 DOI: 10.3389/fpls.2024.1396553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 04/02/2024] [Indexed: 05/08/2024]
Abstract
Some species of the genus Aegilops, a wild relative of wheat, carry chromosomes that after introducing to wheat exhibit preferential transmission to progeny. Their selective retention is a result of the abortion of gametes lacking them due to induced chromosomal aberrations. These chromosomes are termed Gametocidal (Gc) and, based on their effects, they are categorized into three types: mild, intense or severe, and very strong. Gc elements within the same homoeologous chromosome groups of Aegilops (II, III, or IV) demonstrate similar Gc action. This review explores the intriguing dynamics of Gc chromosomes and encompasses comprehensive insights into their source species, behavioral aspects, mode of action, interactions, suppressions, and practical applications of the Gc system in wheat breeding. By delving into these areas, this work aims to contribute to the development of novel plant genetic resources for wheat breeding. The insights provided herein shed light on the utilization of Gc chromosomes to produce chromosomal rearrangements in wheat and its wild relatives, thereby facilitating the generation of chromosome deletions, translocations, and telosomic lines. The Gc approach has significantly advanced various aspects of wheat genetics, including the introgression of novel genes and alleles, molecular markers and gene mapping, and the exploration of homoeologous relationships within Triticeae species. The mystery lies in why gametes possessing Gc genes maintain their normality while those lacking Gc genes suffer abnormalities, highlighting an unresolved research gap necessitating deeper investigation.
Collapse
Affiliation(s)
- Mahmoud Said
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czechia
- Field Crops Research Institute, Agricultural Research Centre, Giza, Egypt
| | - Eszter Gaál
- Agricultural Institute, Hungarian Research Network (HUN-REN) Centre for Agricultural Research, Martonvásár, Hungary
| | - András Farkas
- Agricultural Institute, Hungarian Research Network (HUN-REN) Centre for Agricultural Research, Martonvásár, Hungary
| | - István Molnár
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czechia
- Agricultural Institute, Hungarian Research Network (HUN-REN) Centre for Agricultural Research, Martonvásár, Hungary
| | - Jan Bartoš
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czechia
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czechia
| | - Adoración Cabrera
- Genetics Department, Escuela Técnica Superior de Ingeniería Agronómica y de Montes (ETSIAM), Agrifood Campus of International Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | | |
Collapse
|
3
|
Lv R, Wang C, Wang R, Wang X, Zhao J, Wang B, Aslam T, Han F, Liu B. Chromosomal instability and phenotypic variation in a specific lineage derived from a synthetic allotetraploid wheat. FRONTIERS IN PLANT SCIENCE 2022; 13:981234. [PMID: 36072314 PMCID: PMC9441941 DOI: 10.3389/fpls.2022.981234] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Newly formed plant allopolyploids usually have meiosis defect, resulting in chromosomal instability manifested as variation in chromosome number and/or structure. However, not all nascent allopolyploids are equally unstable. The wheat group (Aegilops/Triticum) contains 13 diploid species with distinct genome types. Many of these species can be artificially hybridized to produce viable but sterile inter-specific/intergeneric F1 hybrids, which can generate fertile synthetic allotetraploid wheats after whole genome doubling. Compared with synthetic allotetraploid wheats that contain genome combinations of AADD and S*S*DD (S* refers to related S genomes of a different species), those containing an S*S*AA genome are significantly more stable. However, robustness of the relative stability of S*S*AA genomes is unknown, nor are the phenotypic and fitness consequences during occurrences of secondary chromosomal instability. Here, we report a specific lineage originated from a single individual plant of a relatively stable synthetic allotetraploid wheat with genomes S l S l AA (S l and A subgenomes were from Ae. longissima and T. urartu, respectively) that showed a high degree of transgenerational chromosomal instability. Both numerical chromosome variation (NCV) and structural chromosome variation (SCV) occurred widely. While substantial differences in frequencies of both NCV and SCV were detected across the different chromosomes, only NCV frequencies were significantly different between the two subgenomes. We found that NCVs and SCVs occurred primarily due to perturbed meiosis, allowing formation of multivalents and univalents as well as homoeologous exchanges. Thus, the combination of NCVs and SCVs affected multiple phenotypic traits, particularly those related to reproductive fitness.
Collapse
Affiliation(s)
- Ruili Lv
- School of Life Sciences, Linyi University, Linyi, China
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Changyi Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Ruisi Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Xiaofei Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Jing Zhao
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Bin Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Tariq Aslam
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Fangpu Han
- School of Life Sciences, Linyi University, Linyi, China
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences (CAS), Beijing, China
| | - Bao Liu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| |
Collapse
|
4
|
Khrustaleva L, Mardini M, Kudryavtseva N, Alizhanova R, Romanov D, Sokolov P, Monakhos G. The Power of Genomic in situ Hybridization (GISH) in Interspecific Breeding of Bulb Onion ( Allium cepa L.) Resistant to Downy Mildew ( Peronospora destructor [Berk.] Casp.). PLANTS (BASEL, SWITZERLAND) 2019; 8:E36. [PMID: 30720753 PMCID: PMC6410304 DOI: 10.3390/plants8020036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 05/29/2023]
Abstract
We exploited the advantages of genomic in situ hybridization (GISH) to monitor the introgression process at the chromosome level using a simple and robust molecular marker in the interspecific breeding of bulb onion (Allium cepa L.) that is resistant to downy mildew. Downy mildew (Peronospora destructor [Berk.] Casp.) is the most destructive fungal disease for bulb onions. With the application of genomic in situ hybridization (GISH) and previously developed DMR1 marker, homozygous introgression lines that are resistant to downy mildew were successfully produced in a rather short breeding time. Considering that the bulb onion is a biennial plant, it took seven years from the F₁ hybrid production to the creation of S₂BC2 homozygous lines that are resistant to downy mildew. Using GISH, it was shown that three progeny plants of S₂BC₂ possessed an A. roylei homozygous fragment in the distal region of the long arm of chromosomes 3 in an A. cepa genetic background. Previously, it was hypothesized that a lethal gene(s) was linked to the downy mildew resistance gene. With the molecular cytogenetic approach, we physically mapped more precisely the lethal gene(s) using the homozygous introgression lines that differed in the size of the A. roylei fragments on chromosome 3.
Collapse
Affiliation(s)
- Ludmila Khrustaleva
- Center of Molecular Biotechnology, Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, 49, Timiryazevskaya Str., 127550 Moscow, Russia.
| | - Majd Mardini
- Center of Molecular Biotechnology, Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, 49, Timiryazevskaya Str., 127550 Moscow, Russia.
| | - Natalia Kudryavtseva
- Center of Molecular Biotechnology, Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, 49, Timiryazevskaya Str., 127550 Moscow, Russia.
| | - Rada Alizhanova
- Center of Molecular Biotechnology, Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, 49, Timiryazevskaya Str., 127550 Moscow, Russia.
| | - Dmitry Romanov
- Center of Molecular Biotechnology, Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, 49, Timiryazevskaya Str., 127550 Moscow, Russia.
| | - Pavel Sokolov
- Center of Molecular Biotechnology, Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, 49, Timiryazevskaya Str., 127550 Moscow, Russia.
| | - Grigory Monakhos
- Center of Molecular Biotechnology, Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, 49, Timiryazevskaya Str., 127550 Moscow, Russia.
| |
Collapse
|
5
|
|