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Orłowska R, Dynkowska WM, Niedziela A, Zebrowski J, Zimny J, Androsiuk P, Bednarek PT. β-glucans, SAM, and GSH fluctuations in barley anther tissue culture conditions affect regenerants' DNA methylation and GPRE. BMC PLANT BIOLOGY 2024; 24:853. [PMID: 39261760 DOI: 10.1186/s12870-024-05572-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Accepted: 09/05/2024] [Indexed: 09/13/2024]
Abstract
BACKGROUND Microspore embryogenesis is a process that produces doubled haploids in tissue culture environments and is widely used in cereal plants. The efficient production of green regenerants requires stresses that could be sensed at the level of glycolysis, followed by the Krebs cycle and electron transfer chain. The latter can be affected by Cu(II) ion concentration in the induction media acting as cofactors of biochemical reactions, indirectly influencing the production of glutathione (GSH) and S-adenosyl-L-methionine (SAM) and thereby affecting epigenetic mechanisms involving DNA methylation (demethylation-DM, de novo methylation-DNM). The conclusions mentioned were acquired from research on triticale regenerants, but there is no similar research on barley. In this way, the study looks at how DNM, DM, Cu(II), SAM, GSH, and β-glucan affect the ability of green plant regeneration efficiency (GPRE). RESULTS The experiment involved spring barley regenerants obtained through anther culture. Nine variants (trials) of induction media were created by adding copper (CuSO4: 0.1; 5; 10 µM) and silver salts (AgNO3: 0; 10; 60 µM), with varying incubation times for the anthers (21, 28, and 35 days). Changes in DNA methylation were estimated using the DArTseqMet molecular marker method, which also detects cytosine methylation. Phenotype variability in β-glucans, SAM and GSH induced by the nutrient treatments was assessed using tentative assignments based on the Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy. The effectiveness of green plant regeneration ranged from 0.1 to 2.91 plants per 100 plated anthers. The level of demethylation ranged from 7.61 to 32.29, while de novo methylation reached values ranging from 6.83 to 32.27. The paper demonstrates that the samples from specific in vitro conditions (trials) formed tight groups linked to the factors contributing to the two main components responsible for 55.05% of the variance (to the first component DNM, DM, to the second component GSH, β-glucans, Cu(II), GPRE). CONCLUSIONS We can conclude that in vitro tissue culture conditions affect biochemical levels, DNA methylation changes, and GPRE. Increasing Cu(II) concentration in the IM impacts the metabolism and DNA methylation, elevating GPRE. Thus, changing Cu(II) concentration in the IM is fair to expect to boost GPRE.
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Affiliation(s)
- Renata Orłowska
- Plant Breeding and Acclimatization Institute-National Research Institute, Radzików, 05-870, Błonie, Poland
| | - Wioletta Monika Dynkowska
- Plant Breeding and Acclimatization Institute-National Research Institute, Radzików, 05-870, Błonie, Poland
| | - Agnieszka Niedziela
- Plant Breeding and Acclimatization Institute-National Research Institute, Radzików, 05-870, Błonie, Poland
| | - Jacek Zebrowski
- Institute of Biology and Biotechnology, University of Rzeszow, Al. Rejtana 16C, Rzeszow, 35-959, Poland
| | - Janusz Zimny
- Plant Breeding and Acclimatization Institute-National Research Institute, Radzików, 05-870, Błonie, Poland
| | - Piotr Androsiuk
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Olsztyn, 10-719, Poland
| | - Piotr Tomasz Bednarek
- Plant Breeding and Acclimatization Institute-National Research Institute, Radzików, 05-870, Błonie, Poland.
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Valero-Rubira I, Castillo AM, Burrell MÁ, Vallés MP. Microspore embryogenesis induction by mannitol and TSA results in a complex regulation of epigenetic dynamics and gene expression in bread wheat. FRONTIERS IN PLANT SCIENCE 2023; 13:1058421. [PMID: 36699843 PMCID: PMC9868772 DOI: 10.3389/fpls.2022.1058421] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Reprogramming of microspores development towards embryogenesis mediated by stress treatment constitutes the basis of doubled haploid production. Recently, compounds that alter histone post-translational modifications (PTMs) have been reported to enhance microspore embryogenesis (ME), by altering histones acetylation or methylation. However, epigenetic mechanisms underlying ME induction efficiency are poorly understood. In this study, the epigenetic dynamics and the expression of genes associated with histone PTMs and ME induction were studied in two bread wheat cultivars with different ME response. Microspores isolated at 0, 3 and 5 days, treated with 0.7M mannitol (MAN) and 0.7M mannitol plus 0.4µM trichostatin A (TSA), which induced ME more efficiently, were analyzed. An additional control of gametophytic development was included. Microspores epigenetic state at the onset of ME induction was distinctive between cultivars by the ratio of H3 variants and their acetylated forms, the localization and percentage of labeled microspores with H3K9ac, H4K5ac, H4K16ac, H3K9me2 and H3K27me3, and the expression of genes related to pollen development. These results indicated that microspores of the high responding cultivar could be at a less advanced stage in pollen development. MAN and TSA resulted in a hyperacetylation of H3.2, with a greater effect of TSA. Histone PTMs were differentially affected by both treatments, with acetylation being most concerned. The effect of TSA was observed in the H4K5ac localization pattern at 3dT in the mid-low responding cultivar. Three gene networks linked to ME response were identified. TaHDT1, TaHAG2, TaYAO, TaNFD6-A, TabZIPF1 and TaAGO802-B, associated with pollen development, were down-regulated. TaHDA15, TaHAG3, TaHAM, TaYUC11D, Ta-2B-LBD16 TaMS1 and TaDRM3 constituted a network implicated in morphological changes by auxin signaling and cell wall modification up-regulated at 3dT. The last network included TaHDA18, TaHAC1, TaHAC4, TaABI5, TaATG18fD, TaSDG1a-7A and was related to ABA and ethylene hormone signaling pathways, DNA methylation and autophagy processes, reaching the highest expression at 5dT. The results indicated that TSA mainly modified the regulation of genes related to pollen and auxin signaling. This study represents a breakthrough in identifying the epigenetic dynamics and the molecular mechanisms governing ME induction efficiency, with relevance to recalcitrant wheat genotypes and other crops.
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Affiliation(s)
- Isabel Valero-Rubira
- Departamento de Genética y Producción Vegetal, Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Zaragoza, Spain
| | - Ana María Castillo
- Departamento de Genética y Producción Vegetal, Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Zaragoza, Spain
| | - María Ángela Burrell
- Departamento de Patología, Anatomía y Fisiología, Facultad de Ciencias, Universidad de Navarra, Pamplona, Spain
| | - Maria Pilar Vallés
- Departamento de Genética y Producción Vegetal, Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Zaragoza, Spain
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Luo P, Jiang A, Zhou Y, Yang M, Zhou X, Yang Y, Yu J, Tang X. Phospholipase C is a novel regulator at the early stages of microspore embryogenesis in Nicotiana tabacum. PLANT SIGNALING & BEHAVIOR 2022; 17:2094618. [PMID: 35786356 PMCID: PMC9254995 DOI: 10.1080/15592324.2022.2094618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
Microspore transfers the developmental fate into embryogenesis in vitro regulated by determinant factors of stress-induced. However, the key regulators of microspore embryogenesis (ME) are still largely undiscovered to reveal the mechanism of cell fate transition. Here, we report that Phospholipase C (PLC) is involved at the early stages of ME in Nicotiana tabacum. NtPLC2/3/4 are expressed at the initial stages of ME. The expression levels of NtPLC2/3 are transient activated after 3 days in culture, while the expression level of NtPLC4 maintains relatively stable. Inhibition of PLCs induces the decrease in NtPLC2/3/4 expression level and decline of ME yield. We confirm that lipids in microspore are degraded and then re-accumulate at first embryonic division stage. Inhibition of PLCs suppresses the lipids metabolism at the early stages of ME. Thus, we propose that PLCs-mediated lipid metabolism is a novel regulator at the early stages of ME.
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Affiliation(s)
- Pan Luo
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan,HubeiChina
| | - Aixi Jiang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan,HubeiChina
| | - Yi Zhou
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan,HubeiChina
| | - Mingchun Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan,HubeiChina
| | - Xiaotong Zhou
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan,HubeiChina
| | - Yong Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan,HubeiChina
| | - Jun Yu
- Tobacco Research Institute of Hubei ProvinceWuhan, Hubei, China
| | - Xingchun Tang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan,HubeiChina
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Dubas E, Żur I, Moravčiková J, Fodor J, Krzewska M, Surówka E, Nowicka A, Gerši Z. Proteins, Small Peptides and Other Signaling Molecules Identified as Inconspicuous but Possibly Important Players in Microspores Reprogramming Toward Embryogenesis. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2021. [DOI: 10.3389/fsufs.2021.745865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In this review, we describe and integrate the latest knowledge on the signaling role of proteins and peptides in the stress-induced microspore embryogenesis (ME) in some crop plants with agricultural importance (i.e., oilseed rape, tobacco, barley, wheat, rice, triticale, rye). Based on the results received from the most advanced omix analyses, we have selected some inconspicuous but possibly important players in microspores reprogramming toward embryogenic development. We provide an overview of the roles and downstream effect of stress-related proteins (e.g., β-1,3-glucanases, chitinases) and small signaling peptides, especially cysteine—(e.g., glutathione, γ-thionins, rapid alkalinization factor, lipid transfer, phytosulfokine) and glycine-rich peptides and other proteins (e.g., fasciclin-like arabinogalactan protein) on acclimation ability of microspores and the cell wall reconstruction in a context of ME induction and haploids/doubled haploids (DHs) production. Application of these molecules, stimulating the induction and proper development of embryo-like structures and green plant regeneration, brings significant improvement of the effectiveness of DHs procedures and could result in its wider incorporation on a commercial scale. Recent advances in the design and construction of synthetic peptides–mainly cysteine-rich peptides and their derivatives–have accelerated the development of new DNA-free genome-editing techniques. These new systems are evolving incredibly fast and soon will find application in many areas of plant science and breeding.
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Improved Anther Culture Media for Enhanced Callus Formation and Plant Regeneration in Rice ( Oryza sativa L.). PLANTS 2021; 10:plants10050839. [PMID: 33921954 PMCID: PMC8143452 DOI: 10.3390/plants10050839] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/09/2021] [Accepted: 04/16/2021] [Indexed: 11/17/2022]
Abstract
Anther culture technique is the most viable and efficient method of producing homozygous doubled haploid plants within a short period. However, the practical application of this technology in rice improvement is still limited by various factors that influence culture efficiency. The present study was conducted to determine the effects of two improved anther culture media, Ali-1 (A1) and Ali-2 (A2), a modified N6 medium, to enhance the callus formation and plant regeneration of japonica, indica, and hybrids of indica and japonica cross. The current study demonstrated that genotype and media had a significant impact (p < 0.001) on both callus induction frequency and green plantlet regeneration efficiency. The use of the A1 and A2 medium significantly enhanced callus induction frequency of japonica rice type, Nipponbare, and the hybrids of indica × japonica cross (CXY6, CXY24, and Y2) but not the indica rice type, NSIC Rc480. However, the A1 medium is found superior to the N6 medium as it significantly improved the green plantlet regeneration efficiency of CXY6, CXY24, and Y2 by almost 36%, 118%, and 277%, respectively. Furthermore, it substantially reduced the albino plantlet regeneration of the induced callus in two hybrids (CXY6 and Y2). Therefore, the improved anther culture medium A1 can produce doubled haploid rice plants for indica × japonica, which can be useful in different breeding programs that will enable the speedy development of rice varieties for resource-poor farmers.
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Yan J, Peng P, Duan G, Lin T, Bai Y. Multiple analyses of various factors affecting the plantlet regeneration of Picea mongolica (H. Q. Wu) W.D. Xu from somatic embryos. Sci Rep 2021; 11:6694. [PMID: 33758217 PMCID: PMC7987962 DOI: 10.1038/s41598-021-83948-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/28/2021] [Indexed: 01/31/2023] Open
Abstract
Picea mongolica, a native species with excellent industrial wood quality and strong sand-fixing capacity, may be utilized in construction of urban green spaces in arid areas in China. However, now the sustainability of the ecosystems where this species grows is at serious risk due to a lack of natural regeneration. In this study, we developed an efficient regeneration system and comprehensively analyzed various factors affecting somatic embryogenesis (SE) using zygotic embryos as explants. We identified the optimal plant growth regulators (PGRs) performance and the best donor trees (k81) for the generation of somatic embryos (SEMs). Additionally, we confirmed that the positive developmental window of SEMs initiation was at the end of July to early August, which is when zygotic embryos was at the late embryogeny. In this time period, specific transcripts associated with the regulation of epigenetic modifications, plant hormone-related genes, and embryonic development-related transcription factors play important roles for early SEMs initiation. These results may provide a valuable resource for vegetative propagation of Picea mongolica. Our results may help to establish a reliable protocol for plantlet regeneration, which may facilitate urban greening applications and industrialization in arid areas.
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Affiliation(s)
- Jia Yan
- grid.411638.90000 0004 1756 9607Institute of Forest Tree Genetic Breeding, Forestry College, Inner Mongolia Agricultural University, Xinjian Street 275, Hohhot City, Inner Mongolia China
| | - Peng Peng
- grid.411638.90000 0004 1756 9607Institute of Forest Tree Genetic Breeding, Forestry College, Inner Mongolia Agricultural University, Xinjian Street 275, Hohhot City, Inner Mongolia China
| | - Guozhen Duan
- grid.262246.60000 0004 1765 430XInstitute of Forestry, Academy of Agricultural and Forestry Sciences, Qinghai University, Ning da Road 251, Xining City, Qinghai Province China
| | - Tao Lin
- grid.411638.90000 0004 1756 9607Institute of Forest Tree Genetic Breeding, Forestry College, Inner Mongolia Agricultural University, Xinjian Street 275, Hohhot City, Inner Mongolia China
| | - Yu´e Bai
- grid.411638.90000 0004 1756 9607Institute of Forest Tree Genetic Breeding, Forestry College, Inner Mongolia Agricultural University, Xinjian Street 275, Hohhot City, Inner Mongolia China
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Abstract
Isolated microspore culture systems have been designed in maize by several groups, mainly from the late 1980s to early 2000s. However, even with optimized protocols, microspore embryogenesis induction has remained very dependent on the genotype in maize, with elite germplasm generally displaying no response or very low response. Yet, these last few years, significant progress has been accomplished in understanding and controlling microspore embryogenesis induction in model dicot and monocot species. This knowledge may be transferred to maize, and isolated microspore culture may gain new interest in this crop, at least for embryogenesis research. The methods we hereby present in detail permit the purification of 3-12 × 105 viable microspores per maize tassel, at the favorable stage for microspore embryogenesis. When cultured in appropriate liquid media, microspores from responsive genotypes give rise to androgenic embryos, which can then be regenerated into fertile doubled haploid plants.
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Affiliation(s)
- Philippe Vergne
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, Lyon, France.
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Ahmadi B, Ahmadi M, Teixeira da Silva JA. Microspore embryogenesis in Brassica: calcium signaling, epigenetic modification, and programmed cell death. PLANTA 2018; 248:1339-1350. [PMID: 30171331 DOI: 10.1007/s00425-018-2996-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 08/28/2018] [Indexed: 05/08/2023]
Abstract
Stress induction followed by excessive calcium influx causes multiple changes in microspores resulting in chromatin remodeling, epigenetic modifications, and removal of unwanted gametophytic components via autophagy, switching microspores towards ME. In Brassica, isolated microspores that are placed under specific external stresses can switch their default developmental pathway towards an embryogenic state. Microspore embryogenesis is a unique system that speeds up breeding programs and, in the context of developmental biology, provides an excellent tool for embryogenesis to be investigated in greater detail. The last few years have provided ample evidence that has allowed Brassica researchers to markedly increase their understanding of the molecular and sub-cellular changes underlying this process. We review recent advances in this field, focusing mainly on the perception to inductive stresses, signal transduction, molecular and structural alterations, and the involvement of programmed cell death at the onset of embryogenic induction.
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Affiliation(s)
- Behzad Ahmadi
- Department of Maize and Forage Crops Research, Seed and Plant Improvement Institute (SPII), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Medya Ahmadi
- Department of Plant Pathology, Ferdowsi Mashhad University, Mashhad, Iran
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Chong‐Pérez B, Carrasco B, Silva H, Herrera F, Quiroz K, Garcia‐Gonzales R. Regeneration of highland papaya ( Vasconcellea pubescens) from anther culture. APPLICATIONS IN PLANT SCIENCES 2018; 6:e01182. [PMID: 30276030 PMCID: PMC6159643 DOI: 10.1002/aps3.1182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/28/2018] [Indexed: 06/08/2023]
Abstract
PREMISE OF THE STUDY Vasconcellea pubescens is an important Caricaceae species cultivated in several countries of South America. The objective of this study was to investigate different media compositions and plant growth regulators to induce plant regeneration. METHODS Anthers were cultured in Murashige and Skoog medium with varying concentrations of naphthalene acetic acid (NAA) and 2,4-dichlorophenoxyacetic acid (2,4-D) plus a cytokinin (N-(2-chloro-4-pyridyl)-N'-phenylurea). The effect of the basal medium supplemented with auxins and cytokinins on shoot regeneration from the induced calli was also evaluated. Addition of maltose to the basal medium was also tested. RESULTS The combination of 0.54 μM NAA and 22.66 μM 2,4-D induced the highest rate of calli formation. Regeneration via organogenesis was obtained in Murashige and Skoog and Woody Plant Medium supplemented with maltose and containing 8.88 μM 6-benzylaminopurine, 5.71 μM indoleacetic acid, and 2.28 μM zeatin. DISCUSSION The plant regeneration protocol reported here permits the development of haploid and double haploid plants that can be useful for propagation purposes, allow a better molecular understanding of the species, and facilitate the production of new cultivars.
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Affiliation(s)
- Borys Chong‐Pérez
- Sociedad de Investigación y ServiciosBioTECNOS Ltda.Camino a Pangal, Km 2.5San JavierChile
| | - Basilio Carrasco
- Departamento de Ciencias VegetalesFacultad de Agronomía e Ingeniería ForestalPontificia Universidad Católica de ChileAv. Vicuña Mackenna 4860SantiagoChile
| | - Herman Silva
- Laboratorio de Genómica Funcional & Bioinformática, Facultad de Ciencias AgronómicasUniversidad de ChileAv. Santa Rosa 11315, 8820808 La PintanaSantiagoChile
| | - Francisca Herrera
- Sociedad de Investigación y ServiciosBioTECNOS Ltda.Camino a Pangal, Km 2.5San JavierChile
| | - Karla Quiroz
- Centro de Biotecnología de los Recursos NaturalesFacultad de Ciencias Agrarias y ForestalesUniversidad Católica del MauleAvenida San Miguel 3605TalcaChile
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Begheyn RF, Yates SA, Sykes T, Studer B. Genetic Loci Governing Androgenic Capacity in Perennial Ryegrass ( Lolium perenne L.). G3 (BETHESDA, MD.) 2018; 8:1897-1908. [PMID: 29626084 PMCID: PMC5982819 DOI: 10.1534/g3.117.300550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/29/2018] [Indexed: 01/17/2023]
Abstract
Immature pollen can be induced to switch developmental pathways from gametogenesis to embryogenesis and subsequently regenerate into homozygous, diploid plants. Such androgenic production of doubled haploids is particularly useful for species where inbreeding is hampered by effective self-incompatibility systems. Therefore, increasing the generally low androgenic capacity of perennial ryegrass (Lolium perenne L.) germplasm would enable the efficient production of homozygous plant material, so that a more effective exploitation of heterosis through hybrid breeding schemes can be realized. Here, we present the results of a genome-wide association study in a heterozygous, multiparental population of perennial ryegrass (n = 391) segregating for androgenic capacity. Genotyping-by-sequencing was used to interrogate gene- dense genomic regions and revealed over 1,100 polymorphic sites. Between one and 10 quantitative trait loci (QTL) were identified for anther response, embryo and total plant production, green and albino plant production and regeneration. Most traits were under polygenic control, although a major QTL on linkage group 5 was associated with green plant regeneration. Distinct genetic factors seem to affect green and albino plant recovery. Two intriguing candidate genes, encoding chromatin binding domains of the developmental phase transition regulator, Polycomb Repressive Complex 2, were identified. Our results shed the first light on the molecular mechanisms behind perennial ryegrass microspore embryogenesis and enable marker-assisted introgression of androgenic capacity into recalcitrant germplasm of this forage crop of global significance.
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Affiliation(s)
- Rachel F Begheyn
- Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, 8092 Zurich, Switzerland
| | - Steven A Yates
- Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, 8092 Zurich, Switzerland
| | - Timothy Sykes
- Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, 8092 Zurich, Switzerland
| | - Bruno Studer
- Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, 8092 Zurich, Switzerland
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Bélanger S, Marchand S, Jacques PÉ, Meyers B, Belzile F. Differential Expression Profiling of Microspores During the Early Stages of Isolated Microspore Culture Using the Responsive Barley Cultivar Gobernadora. G3 (BETHESDA, MD.) 2018; 8:1603-1614. [PMID: 29531122 PMCID: PMC5940152 DOI: 10.1534/g3.118.200208] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 03/06/2018] [Indexed: 11/18/2022]
Abstract
In barley, it is possible to induce embryogenesis in the haploid and uninucleate microspore to obtain a diploid plant that is perfectly homozygous. To change developmental fates in this fashion, microspores need to engage in cellular de-differentiation, interrupting the pollen formation, and restore totipotency prior to engaging in embryogenesis. In this work, we used the barley cultivar Gobernadora to characterize the transcriptome of microspores prior to (day 0) and immediately after (days 2 and 5) the application of a stress pretreatment. A deep RNA-seq analysis revealed that microspores at these three time points exhibit a transcriptome of ∼14k genes, ∼90% of which were shared. An expression analysis identified a total of 3,382 differentially expressed genes (DEGs); of these, 2,155 and 2,281 DEGs were respectively identified when contrasting expression at days 0 and 2 and at days 2 and 5. These define 8 expression profiles in which DEGs share a common up- or down-regulation at these time points. Up-regulation of numerous glutathione S-transferase and heat shock protein genes as well as down-regulation of ribosomal subunit protein genes was observed between days 0 and 2. The transition from microspores to developing embryos (days 2 vs. 5) was marked by the induction of transcription factor genes known to play important roles in early embryogenesis, numerous genes involved in hormone biosynthesis and plant hormonal signal transduction in addition to genes involved in secondary metabolism. This work sheds light on transcriptional changes accompanying an important developmental shift and provides candidate biomarkers for embryogenesis in barley.
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Affiliation(s)
- Sébastien Bélanger
- Département de Phytologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, Quebec, Canada, G1V 0A6
| | - Suzanne Marchand
- Département de Phytologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, Quebec, Canada, G1V 0A6
| | | | - Blake Meyers
- Donald Danforth Plant Science Center, St. Louis, MO 63132
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211
| | - François Belzile
- Département de Phytologie and Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, Quebec, Canada, G1V 0A6
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12
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Ślusarkiewicz-Jarzina A, Pudelska H, Woźna J, Pniewski T. Improved production of doubled haploids of winter and spring triticale hybrids via combination of colchicine treatments on anthers and regenerated plants. J Appl Genet 2017; 58:287-295. [PMID: 28063128 PMCID: PMC5509786 DOI: 10.1007/s13353-016-0387-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/14/2016] [Accepted: 12/18/2016] [Indexed: 10/25/2022]
Abstract
Double haploids (DH), obtained during androgenesis in vitro or by genome diploidisation in regenerated haploids, are one type of basic materials used in triticale breeding programmes. The aim of this study was to improve DH production by a combination of colchicine treatment methods on a sample of five winter and five spring triticale hybrids. Colchicine was applied in vitro either in the C17 medium to induce embryo-like structures (ELS) or in the 190-2 medium for green plant (GP) development. Regenerants which remained haploid were immersed in a colchicine solution either when placed on the medium prior to transferring to soil or when growing in pots, followed by the application or absence of cooling. Colchicine treatment during anther culture affected neither ELS nor GP development, but significantly increased the number of DH plants in comparison to spontaneous chromosome doubling. The highest efficiency was recorded when colchicine was applied in the induction medium (55%) versus the regeneration medium (44.5%) or no colchicine treatment (30%). The effectiveness of chromosome duplication in haploid plants ranged from 32 to 64.5% and it was the highest for the treatment on the medium followed by cooling. Individual hybrids differed regarding their capability of regeneration and chromosome doubling, which were consistent only to a low or moderate extent. However, taken together, winter and spring hybrids did not differ significantly. Combined colchicine application resulted in a high yield of DH production, 82.6% for all triticale hybrids, and can provide a considerable number of fertile DH lines for triticale breeding programmes.
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Affiliation(s)
| | - Hanna Pudelska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Jolanta Woźna
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Tomasz Pniewski
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
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Noga A, Skrzypek E, Warchoł M, Czyczyło-Mysza I, Dziurka K, Marcińska I, Juzoń K, Warzecha T, Sutkowska A, Nita Z, Werwińska K. Conversion of oat ( Avena sativa L.) haploid embryos into plants in relation to embryo developmental stage and regeneration media. IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY. PLANT : JOURNAL OF THE TISSUE CULTURE ASSOCIATION 2016; 52:590-597. [PMID: 28042230 PMCID: PMC5159443 DOI: 10.1007/s11627-016-9788-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 10/02/2016] [Indexed: 06/06/2023]
Abstract
Obtaining oat DH lines is only effective via wide crossing with maize. Seven hundred haploid embryos from 21 single F1 progeny obtained from wide crosses with maize were isolated, divided into four groups according to their size (<0.5 mm, 0.5-0.9 mm, 1.0-1.4 mm, and ≥1.5 mm), and transferred into 190-2 regeneration medium with different growth regulators: 0.5 mg L-1 kinetin (KIN) and 0.5 mg L-1 1-naphthaleneacetic acid (NAA); 1 mg L-1 zeatin (ZEA) and 0.5 mg L-1 NAA; or 1 mg L-1 dicamba (DIC), 1 mg L-1 picloram (PIC), and 0.5 mg L-1 kinetin (KIN). Among all isolated embryos, approximately 46.1% were between 1.0-1.4 mm, while the smallest group of embryos (7.1%) were those <0.5 mm. The ability of haploid embryos to germinate varied depending on oat genotypes and the size of embryos. Haploid embryos <0.5 mm were globular and did not germinate, whereas embryos ≥1.5 mm had clearly visible coleoptiles, radicles, and scutella, and were able to germinate. Germination of oat haploid embryos varied depending on growth regulators in the regeneration medium. Most haploid embryos germinated on medium with 0.5 mg L-1 NAA and 0.5 mg L-1 KIN, while the fewest germinated on medium with 1 mg L-1 DIC, 1 mg L-1 PIC, and 0.5 mg L-1 KIN. One hundred thirty germinated haploid embryos converted into haploid plants. Fifty oat DH lines were obtained after colchicine treatment.
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Affiliation(s)
- Angelika Noga
- Department of Biotechnology, Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland
| | - Edyta Skrzypek
- Department of Biotechnology, Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland
| | - Marzena Warchoł
- Department of Biotechnology, Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland
| | - Ilona Czyczyło-Mysza
- Department of Biotechnology, Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland
| | - Kinga Dziurka
- Department of Biotechnology, Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland
| | - Izabela Marcińska
- Department of Biotechnology, Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland
| | - Katarzyna Juzoń
- Department of Biotechnology, Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Niezapominajek 21, 30-239 Kraków, Poland
| | - Tomasz Warzecha
- Department of Plant Breeding and Seed Science, University of Agriculture, Łobzowska 24, 31-140 Kraków, Poland
| | - Agnieszka Sutkowska
- Department of Plant Breeding and Seed Science, University of Agriculture, Łobzowska 24, 31-140 Kraków, Poland
| | - Zygmunt Nita
- Plant Breeding Strzelce Ltd., PBAI Group, Główna 20, 99-307 Strzelce, Poland
| | - Krystyna Werwińska
- Plant Breeding Strzelce Ltd., PBAI Group, Główna 20, 99-307 Strzelce, Poland
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