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Pushkova EN, Borkhert EV, Novakovskiy RO, Dvorianinova EM, Rozhmina TA, Zhuchenko AA, Zhernova DA, Turba AA, Yablokov AG, Sigova EA, Krasnov GS, Bolsheva NL, Melnikova NV, Dmitriev AA. Selection of Flax Genotypes for Pan-Genomic Studies by Sequencing Tagmentation-Based Transcriptome Libraries. PLANTS (BASEL, SWITZERLAND) 2023; 12:3725. [PMID: 37960081 PMCID: PMC10650069 DOI: 10.3390/plants12213725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023]
Abstract
Flax (Linum usitatissimum L.) products are used in the food, pharmaceutical, textile, polymer, medical, and other industries. The creation of a pan-genome will be an important advance in flax research and breeding. The selection of flax genotypes that sufficiently cover the species diversity is a crucial step for the pan-genomic study. For this purpose, we have adapted a method based on Illumina sequencing of transcriptome libraries prepared using the Tn5 transposase (tagmentase). This approach reduces the cost of sample preparation compared to commercial kits and allows the generation of a large number of cDNA libraries in a short time. RNA-seq data were obtained for 192 flax plants (3-6 individual plants from 44 flax accessions of different morphology and geographical origin). Evaluation of the genetic relationship between flax plants based on the sequencing data revealed incorrect species identification for five accessions. Therefore, these accessions were excluded from the sample set for the pan-genomic study. For the remaining samples, typical genotypes were selected to provide the most comprehensive genetic diversity of flax for pan-genome construction. Thus, high-throughput sequencing of tagmentation-based transcriptome libraries showed high efficiency in assessing the genetic relationship of flax samples and allowed us to select genotypes for the flax pan-genomic analysis.
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Affiliation(s)
- Elena N. Pushkova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Elena V. Borkhert
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Roman O. Novakovskiy
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Ekaterina M. Dvorianinova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
- Moscow Institute of Physics and Technology, 141701 Moscow, Russia
| | - Tatiana A. Rozhmina
- Federal Research Center for Bast Fiber Crops, 172002 Torzhok, Russia; (T.A.R.); (A.A.Z.)
| | - Alexander A. Zhuchenko
- Federal Research Center for Bast Fiber Crops, 172002 Torzhok, Russia; (T.A.R.); (A.A.Z.)
- All-Russian Horticultural Institute for Breeding, Agrotechnology and Nursery, 115598 Moscow, Russia
| | - Daiana A. Zhernova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
- Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Anastasia A. Turba
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Arthur G. Yablokov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Elizaveta A. Sigova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
- Moscow Institute of Physics and Technology, 141701 Moscow, Russia
| | - George S. Krasnov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Nadezhda L. Bolsheva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Nataliya V. Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
| | - Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (E.N.P.); (E.V.B.); (R.O.N.); (E.M.D.); (D.A.Z.); (A.A.T.); (A.G.Y.); (E.A.S.); (G.S.K.); (N.L.B.)
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Dvorianinova EM, Zinovieva OL, Pushkova EN, Zhernova DA, Rozhmina TA, Povkhova LV, Novakovskiy RO, Sigova EA, Turba AA, Borkhert EV, Krasnov GS, Ruan C, Dmitriev AA, Melnikova NV. Key FAD2, FAD3, and SAD Genes Involved in the Fatty Acid Synthesis in Flax Identified Based on Genomic and Transcriptomic Data. Int J Mol Sci 2023; 24:14885. [PMID: 37834335 PMCID: PMC10573214 DOI: 10.3390/ijms241914885] [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: 08/13/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
FAD (fatty acid desaturase) and SAD (stearoyl-ACP desaturase) genes play key roles in the synthesis of fatty acids (FA) and determination of oil composition in flax (Linum usitatissimum L.). We searched for FAD and SAD genes in the most widely used flax genome of the variety CDC Bethune and three available long-read assembled flax genomes-YY5, 3896, and Atlant. We identified fifteen FAD2, six FAD3, and four SAD genes. Of all the identified genes, 24 were present in duplicated pairs. In most cases, two genes from a pair differed by a significant number of gene-specific SNPs (single nucleotide polymorphisms) or even InDels (insertions/deletions), except for FAD2a-1 and FAD2a-2, where only seven SNPs distinguished these genes. Errors were detected in the FAD2a-1, FAD2a-2, FAD3c-1, and FAD3d-2 sequences in the CDC Bethune genome assembly but not in the long-read genome assemblies. Expression analysis of the available transcriptomic data for different flax organs/tissues revealed that FAD2a-1, FAD2a-2, FAD3a, FAD3b, SAD3-1, and SAD3-2 were specifically expressed in embryos/seeds/capsules and could play a crucial role in the synthesis of FA in flax seeds. In contrast, FAD2b-1, FAD2b-2, SAD2-1, and SAD2-2 were highly expressed in all analyzed organs/tissues and could be involved in FA synthesis in whole flax plants. FAD2c-2, FAD2d-1, FAD3c-1, FAD3c-2, FAD3d-1, FAD3d-2, SAD3-1, and SAD3-2 showed differential expression under stress conditions-Fusarium oxysporum infection and drought. The obtained results are essential for research on molecular mechanisms of fatty acid synthesis, FAD and SAD editing, and marker-assisted and genomic selection for breeding flax varieties with a determined fatty acid composition of oil.
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Affiliation(s)
| | - Olga L. Zinovieva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Elena N. Pushkova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Daiana A. Zhernova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow 119234, Russia
| | - Tatiana A. Rozhmina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Federal Research Center for Bast Fiber Crops, Torzhok 172002, Russia
| | - Liubov V. Povkhova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Moscow Institute of Physics and Technology, Moscow 141701, Russia
| | - Roman O. Novakovskiy
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Elizaveta A. Sigova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Moscow Institute of Physics and Technology, Moscow 141701, Russia
| | - Anastasia A. Turba
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Elena V. Borkhert
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - George S. Krasnov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Chengjiang Ruan
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Institute of Plant Resources, Dalian Minzu University, Dalian 116600, China
| | - Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Moscow Institute of Physics and Technology, Moscow 141701, Russia
| | - Nataliya V. Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
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Zhao X, Yi L, Zuo Y, Gao F, Cheng Y, Zhang H, Zhou Y, Jia X, Su S, Zhang D, Zhang X, Ren Y, Mu Y, Jin X, Li Q, Bateer S, Lu Z. High-Quality Genome Assembly and Genome-Wide Association Study of Male Sterility Provide Resources for Flax Improvement. PLANTS (BASEL, SWITZERLAND) 2023; 12:2773. [PMID: 37570928 PMCID: PMC10421198 DOI: 10.3390/plants12152773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/21/2023] [Accepted: 07/23/2023] [Indexed: 08/13/2023]
Abstract
Flax is an economic crop with a long history. It is grown worldwide and is mainly used for edible oil, industry, and textiles. Here, we reported a high-quality genome assembly for "Neiya No. 9", a popular variety widely grown in China. Combining PacBio long reads, Hi-C sequencing, and a genetic map reported previously, a genome assembly of 473.55 Mb was constructed, which covers ~94.7% of the flax genome. These sequences were anchored onto 15 chromosomes. The N50 lengths of the contig and scaffold were 0.91 Mb and 31.72 Mb, respectively. A total of 32,786 protein-coding genes were annotated, and 95.9% of complete BUSCOs were found. Through morphological and cytological observation, the male sterility of flax was considered dominant nuclear sterility. Through GWAS analysis, the gene LUSG00017705 (cysteine synthase gene) was found to be closest to the most significant SNP, and the expression level of this gene was significantly lower in male sterile plants than in fertile plants. Among the significant SNPs identified in the GWAS analysis, only two were located in the coding region, and these two SNPs caused changes in the protein encoded by LUSG00017565 (cysteine protease gene). It was speculated that these two genes may be related to male sterility in flax. This is the first time the molecular mechanism of male sterility in flax has been reported. The high-quality genome assembly and the male sterility genes revealed, provided a solid foundation for flax breeding.
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Affiliation(s)
- Xiaoqing Zhao
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Liuxi Yi
- Agricultural College, Inner Mongolia Agricultural University, Hohhot 010019, China
| | - Yongchun Zuo
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot 010019, China
| | - Fengyun Gao
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Yuchen Cheng
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
- Inner Mongolia Key Laboratory of Degradation Farmland Ecological Restoration and Pollution Control, Hohhot 010031, China
- Inner Mongolia Conservation Tillage Engineering Technology Research Center, Hohhot 010031, China
| | - Hui Zhang
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Yu Zhou
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Xiaoyun Jia
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Shaofeng Su
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Dejian Zhang
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
- Inner Mongolia Key Laboratory of Degradation Farmland Ecological Restoration and Pollution Control, Hohhot 010031, China
- Inner Mongolia Conservation Tillage Engineering Technology Research Center, Hohhot 010031, China
| | - Xiangqian Zhang
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
- Inner Mongolia Key Laboratory of Degradation Farmland Ecological Restoration and Pollution Control, Hohhot 010031, China
- Inner Mongolia Conservation Tillage Engineering Technology Research Center, Hohhot 010031, China
| | - Yongfeng Ren
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
- Inner Mongolia Key Laboratory of Degradation Farmland Ecological Restoration and Pollution Control, Hohhot 010031, China
- Inner Mongolia Conservation Tillage Engineering Technology Research Center, Hohhot 010031, China
| | - Yanxin Mu
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Xiaolei Jin
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Qiang Li
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Siqin Bateer
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Zhanyuan Lu
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
- College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
- Inner Mongolia Key Laboratory of Degradation Farmland Ecological Restoration and Pollution Control, Hohhot 010031, China
- Inner Mongolia Conservation Tillage Engineering Technology Research Center, Hohhot 010031, China
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Kaur V, Singh M, Wankhede DP, Gupta K, Langyan S, Aravind J, Thangavel B, Yadav SK, Kalia S, Singh K, Kumar A. Diversity of Linum genetic resources in global genebanks: from agro-morphological characterisation to novel genomic technologies - a review. Front Nutr 2023; 10:1165580. [PMID: 37324736 PMCID: PMC10267467 DOI: 10.3389/fnut.2023.1165580] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/27/2023] [Indexed: 06/17/2023] Open
Abstract
Linseed or flaxseed is a well-recognized nutritional food with nutraceutical properties owing to high omega-3 fatty acid (α-Linolenic acid), dietary fiber, quality protein, and lignan content. Currently, linseed enjoys the status of a 'superfood' and its integration in the food chain as a functional food is evolving continuously as seed constituents are associated with lowering the risk of chronic ailments, such as heart diseases, cancer, diabetes, and rheumatoid arthritis. This crop also receives much attention in the handloom and textile sectors as the world's coolest fabric linen is made up of its stem fibers which are endowed with unique qualities such as luster, tensile strength, density, bio-degradability, and non-hazardous nature. Worldwide, major linseed growing areas are facing erratic rainfall and temperature patterns affecting flax yield, quality, and response to biotic stresses. Amid such changing climatic regimes and associated future threats, diverse linseed genetic resources would be crucial for developing cultivars with a broad genetic base for sustainable production. Furthermore, linseed is grown across the world in varied agro-climatic conditions; therefore it is vital to develop niche-specific cultivars to cater to diverse needs and keep pace with rising demands globally. Linseed genetic diversity conserved in global genebanks in the form of germplasm collection from natural diversity rich areas is expected to harbor genetic variants and thus form crucial resources for breeding tailored crops to specific culinary and industrial uses. Global genebank collections thus potentially play an important role in supporting sustainable agriculture and food security. Currently, approximately 61,000 germplasm accessions of linseed including 1,127 wild accessions are conserved in genebanks/institutes worldwide. This review analyzes the current status of Linum genetic resources in global genebanks, evaluation for agro-morphological traits, stress tolerance, and nutritional profiling to promote their effective use for sustainable production and nutrition enhancement in our modern diets.
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Affiliation(s)
- Vikender Kaur
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Mamta Singh
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Dhammaprakash Pandhari Wankhede
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Kavita Gupta
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Sapna Langyan
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Jayaraman Aravind
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Boopathi Thangavel
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Shashank Kumar Yadav
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Sanjay Kalia
- Department of Biotechnology, Ministry of Science and Technology, Government of India, New Delhi, India
| | - Kuldeep Singh
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Ashok Kumar
- Division of Germplasm Evaluation, Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources, New Delhi, India
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Dvorianinova EM, Bolsheva NL, Pushkova EN, Rozhmina TA, Zhuchenko AA, Novakovskiy RO, Povkhova LV, Sigova EA, Zhernova DA, Borkhert EV, Kaluzhny DN, Melnikova NV, Dmitriev AA. Isolating Linum usitatissimum L. Nuclear DNA Enabled Assembling High-Quality Genome. Int J Mol Sci 2022; 23:13244. [PMID: 36362031 PMCID: PMC9656206 DOI: 10.3390/ijms232113244] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
High-quality genome sequences help to elucidate the genetic basis of numerous biological processes and track species evolution. For flax (Linum usitatissimum L.)-a multifunctional crop, high-quality assemblies from Oxford Nanopore Technologies (ONT) data were unavailable, largely due to the difficulty of isolating pure high-molecular-weight DNA. This article proposes a scheme for gaining a contiguous L. usitatissimum assembly using Nanopore data. We developed a protocol for flax nuclei isolation with subsequent DNA extraction, which allows obtaining about 5 μg of pure high-molecular-weight DNA from 0.5 g of leaves. Such an amount of material can be collected even from a single plant and yields more than 30 Gb of ONT data in two MinION runs. We performed a comparative analysis of different genome assemblers and polishers on the gained data and obtained the final 447.1-Mb assembly of L. usitatissimum line 3896 genome using the Canu-Racon (two iterations)-Medaka combination. The genome comprised 1695 contigs and had an N50 of 6.2 Mb and a completeness of 93.8% of BUSCOs from eudicots_odb10. Our study highlights the impact of the chosen genome construction strategy on the resulting assembly parameters and its eligibility for future genomic studies.
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Affiliation(s)
| | - Nadezhda L. Bolsheva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Elena N. Pushkova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | | | - Alexander A. Zhuchenko
- Federal Research Center for Bast Fiber Crops, Torzhok 172002, Russia
- All-Russian Horticultural Institute for Breeding, Agrotechnology and Nursery, Moscow 115598, Russia
| | - Roman O. Novakovskiy
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Liubov V. Povkhova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Moscow Institute of Physics and Technology, Moscow 141701, Russia
| | - Elizaveta A. Sigova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Moscow Institute of Physics and Technology, Moscow 141701, Russia
| | - Daiana A. Zhernova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow 119234, Russia
| | - Elena V. Borkhert
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Dmitry N. Kaluzhny
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Nataliya V. Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
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Adaptive Response and Transcriptomic Analysis of Flax (Linum usitatissimum L.) Seedlings to Salt Stress. Genes (Basel) 2022; 13:genes13101904. [DOI: 10.3390/genes13101904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/15/2022] [Accepted: 10/18/2022] [Indexed: 11/17/2022] Open
Abstract
Soil salinity constrains agricultural development in arid regions. Flax is an economically important crop in many countries, and screening or breeding salinity-resistant flax cultivars is necessary. Based on the previous screening of flaxseed cultivars C71 (salt-sensitive) and C116 (salt-tolerant) as test materials, flax seedlings stressed with different concentrations of NaCl (0, 100, 150, 200, and 250 mmol/L) for 21 days were used to investigate the effects of salt stress on the growth characteristics, osmotic regulators, and antioxidant capacity of these flax seedlings and to reveal the adaptive responses of flax seedlings to salt stress. The results showed that plant height and root length of flax were inhibited, with C116 showing lower growth than C71. The concentrations of osmotic adjustment substances such as soluble sugars, soluble proteins, and proline were higher in the resistant material, C116, than in the sensitive material, C71, under different concentrations of salt stress. Consistently, C116 showed a better rapid scavenging ability for reactive oxygen species (ROS) and maintained higher activities of antioxidant enzymes to balance salt injury stress by inhibiting growth under salt stress. A transcriptome analysis of flax revealed that genes related to defense and senescence were significantly upregulated, and genes related to the growth and development processes were significantly downregulated under salt stress. Our results indicated that one of the important adaptations to tolerance to high salt stress is complex physiological remediation by rapidly promoting transcriptional regulation in flax.
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Povkhova LV, Melnikova NV, Rozhmina TA, Novakovskiy RO, Pushkova EN, Dvorianinova EM, Zhuchenko AA, Kamionskaya AM, Krasnov GS, Dmitriev AA. Genes Associated with the Flax Plant Type (Oil or Fiber) Identified Based on Genome and Transcriptome Sequencing Data. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122616. [PMID: 34961087 PMCID: PMC8707629 DOI: 10.3390/plants10122616] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
As a result of the breeding process, there are two main types of flax (Linum usitatissimum L.) plants. Linseed is used for obtaining seeds, while fiber flax is used for fiber production. We aimed to identify the genes associated with the flax plant type, which could be important for the formation of agronomically valuable traits. A search for polymorphisms was performed in genes involved in the biosynthesis of cell wall components, lignans, fatty acids, and ion transport based on genome sequencing data for 191 flax varieties. For 143 of the 424 studied genes (4CL, C3'H, C4H, CAD, CCR, CCoAOMT, COMT, F5H, HCT, PAL, CTL, BGAL, ABC, HMA, DIR, PLR, UGT, TUB, CESA, RGL, FAD, SAD, and ACT families), one or more polymorphisms had a strong correlation with the flax type. Based on the transcriptome sequencing data, we evaluated the expression levels for each flax type-associated gene in a wide range of tissues and suggested genes that are important for the formation of linseed or fiber flax traits. Such genes were probably subjected to the selection press and can determine not only the traits of seeds and stems but also the characteristics of the root system or resistance to stresses at a particular stage of development, which indirectly affects the ability of flax plants to produce seeds or fiber.
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Affiliation(s)
- Liubov V. Povkhova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (L.V.P.); (N.V.M.); (R.O.N.); (E.N.P.); (E.M.D.); (G.S.K.)
- Moscow Institute of Physics and Technology, 141701 Moscow, Russia
| | - Nataliya V. Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (L.V.P.); (N.V.M.); (R.O.N.); (E.N.P.); (E.M.D.); (G.S.K.)
| | - Tatiana A. Rozhmina
- Federal Research Center for Bast Fiber Crops, 172002 Torzhok, Russia; (T.A.R.); (A.A.Z.)
| | - Roman O. Novakovskiy
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (L.V.P.); (N.V.M.); (R.O.N.); (E.N.P.); (E.M.D.); (G.S.K.)
| | - Elena N. Pushkova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (L.V.P.); (N.V.M.); (R.O.N.); (E.N.P.); (E.M.D.); (G.S.K.)
| | - Ekaterina M. Dvorianinova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (L.V.P.); (N.V.M.); (R.O.N.); (E.N.P.); (E.M.D.); (G.S.K.)
- Moscow Institute of Physics and Technology, 141701 Moscow, Russia
| | - Alexander A. Zhuchenko
- Federal Research Center for Bast Fiber Crops, 172002 Torzhok, Russia; (T.A.R.); (A.A.Z.)
- All-Russian Horticultural Institute for Breeding, Agrotechnology and Nursery, 115598 Moscow, Russia
| | - Anastasia M. Kamionskaya
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia;
| | - George S. Krasnov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (L.V.P.); (N.V.M.); (R.O.N.); (E.N.P.); (E.M.D.); (G.S.K.)
| | - Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (L.V.P.); (N.V.M.); (R.O.N.); (E.N.P.); (E.M.D.); (G.S.K.)
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