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Havlickova L, He Z, Berger M, Wang L, Sandmann G, Chew YP, Yoshikawa GV, Lu G, Hu Q, Banga SS, Beaudoin F, Bancroft I. Genomics of predictive radiation mutagenesis in oilseed rape: modifying seed oil composition. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:738-750. [PMID: 37921406 PMCID: PMC10893948 DOI: 10.1111/pbi.14220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 10/12/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
Rapeseed is a crop of global importance but there is a need to broaden the genetic diversity available to address breeding objectives. Radiation mutagenesis, supported by genomics, has the potential to supersede genome editing for both gene knockout and copy number increase, but detailed knowledge of the molecular outcomes of radiation treatment is lacking. To address this, we produced a genome re-sequenced panel of 1133 M2 generation rapeseed plants and analysed large-scale deletions, single nucleotide variants and small insertion-deletion variants affecting gene open reading frames. We show that high radiation doses (2000 Gy) are tolerated, gamma radiation and fast neutron radiation have similar impacts and that segments deleted from the genomes of some plants are inherited as additional copies by their siblings, enabling gene dosage decrease. Of relevance for species with larger genomes, we showed that these large-scale impacts can also be detected using transcriptome re-sequencing. To test the utility of the approach for predictive alteration of oil fatty acid composition, we produced lines with both decreased and increased copy numbers of Bna.FAE1 and confirmed the anticipated impacts on erucic acid content. We detected and tested a 21-base deletion expected to abolish function of Bna.FAD2.A5, for which we confirmed the predicted reduction in seed oil polyunsaturated fatty acid content. Our improved understanding of the molecular effects of radiation mutagenesis will underpin genomics-led approaches to more efficient introduction of novel genetic variation into the breeding of this crop and provides an exemplar for the predictive improvement of other crops.
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Affiliation(s)
| | - Zhesi He
- Department of BiologyUniversity of YorkYorkUK
| | | | - Lihong Wang
- Department of BiologyUniversity of YorkYorkUK
| | | | | | - Guilherme V. Yoshikawa
- Department of BiologyUniversity of YorkYorkUK
- Present address:
School of Agriculture, Food and Wine, Waite Research InstituteUniversity of AdelaideGlen OsmondSAAustralia
| | - Guangyuan Lu
- Department of Rapeseed Genetics and Breeding, Oil Crops Research InstituteCAASWuhanChina
- College of Biology and Food EngineeringGuangdong University of Petrochemical TechnologyMaomingChina
| | - Qiong Hu
- Department of Rapeseed Genetics and Breeding, Oil Crops Research InstituteCAASWuhanChina
| | - Surinder S. Banga
- Department of Plant Breeding and GeneticsPunjab Agricultural UniversityLudhianaIndia
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Bansal S, Sundararajan S, Shekhawat PK, Singh S, Soni P, Tripathy MK, Ram H. Rice lipases: a conundrum in rice bran stabilization: a review on their impact and biotechnological interventions. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:985-1003. [PMID: 37649880 PMCID: PMC10462582 DOI: 10.1007/s12298-023-01343-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 09/01/2023]
Abstract
Rice is a primary food and is one of the most important constituents of diets all around the world. Rice bran is a valuable component of rice, containing many oil-soluble vitamins, minerals, and oil. It is known for its ability to improve the economic value of rice. Further, it contains substantial quantities of minerals like potassium, calcium, magnesium, iron and antioxidants like tocopherols, tocotrienols, and γ-oryzanol, indicating that rice bran can be utilized effectively against several life-threatening disorders. It is difficult to fully utilize the necessary nutrients due to the presence of lipases in rice bran. These lipases break down lipids, specifically Triacylglycerol, into free fatty acids and glycerol. This review discusses physicochemical properties, mechanism of action, distribution, and activity of lipases in various components of rice seeds. The phylogenetic and gene expression analysis helped to understand the differential expression pattern of lipase genes at different growth phases of rice plant. Further, this review discusses various genetic and biotechnological approaches to decrease lipase activity in rice and other plants, which could potentially prevent the degradation of bran oil. The goal is to establish whether lipases are a major contributor to this issue and to develop rice varieties with improved bran stability. This information sets the stage for upcoming molecular research in this area. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-023-01343-3.
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Affiliation(s)
- Sakshi Bansal
- National Agri-Food Biotechnology Institute, Sector 81, Mohali, 140306 India
| | - Sathish Sundararajan
- National Institute of Plant Genome Research (NIPGR), Aruna Asaf Ali Marg, New Delhi, 110067 India
| | | | - Shivangi Singh
- National Institute of Plant Genome Research (NIPGR), Aruna Asaf Ali Marg, New Delhi, 110067 India
| | - Praveen Soni
- Department of Botany, University of Rajasthan, JLN Marg, Jaipur, 302004 India
| | - Manas K. Tripathy
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi, 110067 India
| | - Hasthi Ram
- National Institute of Plant Genome Research (NIPGR), Aruna Asaf Ali Marg, New Delhi, 110067 India
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Guan M, Shi X, Chen S, Wan Y, Tang Y, Zhao T, Gao L, Sun F, Yin N, Zhao H, Lu K, Li J, Qu C. Comparative transcriptome analysis identifies candidate genes related to seed coat color in rapeseed. FRONTIERS IN PLANT SCIENCE 2023; 14:1154208. [PMID: 36993847 PMCID: PMC10042178 DOI: 10.3389/fpls.2023.1154208] [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: 01/30/2023] [Accepted: 02/17/2023] [Indexed: 06/19/2023]
Abstract
Yellow seed coat in rapeseed (Brassica napus) is a desirable trait that can be targeted to improve the quality of this oilseed crop. To better understand the inheritance mechanism of the yellow-seeded trait, we performed transcriptome profiling of developing seeds in yellow- and black-seeded rapeseed with different backgrounds. The differentially expressed genes (DEGs) during seed development showed significant characteristics, these genes were mainly enriched for the Gene Ontology (GO) terms carbohydrate metabolic process, lipid metabolic process, photosynthesis, and embryo development. Moreover, 1206 and 276 DEGs, which represent candidates to be involved in seed coat color, were identified between yellow- and black-seeded rapeseed during the middle and late stages of seed development, respectively. Based on gene annotation, GO enrichment analysis, and protein-protein interaction network analysis, the downregulated DEGs were primarily enriched for the phenylpropanoid and flavonoid biosynthesis pathways. Notably, 25 transcription factors (TFs) involved in regulating flavonoid biosynthesis pathway, including known (e.g., KNAT7, NAC2, TTG2 and STK) and predicted TFs (e.g., C2H2-like, bZIP44, SHP1, and GBF6), were identified using integrated gene regulatory network (iGRN) and weight gene co-expression networks analysis (WGCNA). These candidate TF genes had differential expression profiles between yellow- and black-seeded rapeseed, suggesting they might function in seed color formation by regulating genes in the flavonoid biosynthesis pathway. Thus, our results provide in-depth insights that facilitate the exploration of candidate gene function in seed development. In addition, our data lay the foundation for revealing the roles of genes involved in the yellow-seeded trait in rapeseed.
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Affiliation(s)
- Mingwei Guan
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Xiangtian Shi
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Si Chen
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Yuanyuan Wan
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Yunshan Tang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Tian Zhao
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Lei Gao
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Fujun Sun
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Nengwen Yin
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Huiyan Zhao
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Kun Lu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Jiana Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Cunmin Qu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology and Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
- Affiliation Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
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Thirty-Two Weeks of Oral Supplementation with LinPro® Increases Hoof Growth in Healthy Mares. J Equine Vet Sci 2022; 117:104086. [PMID: 35872234 DOI: 10.1016/j.jevs.2022.104086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/15/2022] [Accepted: 07/19/2022] [Indexed: 11/21/2022]
Abstract
LinPro® is a commercial dietary supplement marketed to increase hoof growth and quality. Ten mature (5-15 years) non-pregnant Quarter Horse mares without existing hoof quality issues were used to test the hypothesis that 32 weeks of daily supplementation with 113 g of LinPro® would increase hoof growth rates as compared to non-supplemented controls. Hooves were trimmed at the start of the study and every 8 weeks thereafter. A mark was applied on the hoof wall surface at 2.5 cm below the junction of the hoof wall and coronary band. At each trimming, the distance between the mark and coronary band was measured and a new mark placed. For front hooves, horses assigned to LP had greater total hoof growth over 32 weeks (2.65 ± 0.15 vs. 2.18 ± 0.12 cm; P = 0.048; Figure 2) and tended to have greater hoof growth per 8 week trimming cycle (0.64 ± 0.03 vs. 0.55 ± 0.03 cm; P = 0.085) than horses assigned to CON. Horses assigned to LP had greater plasma biotin concentrations (2158 ± 69 vs. 636 ± 62 ng/L; P < 0.001) and proportions of erucic acid in hoof tissue (1.03 ± 0.08 vs. 0.76 ± 0.07 %; P = 0.049) as compared to CON. Further, the most abundant fatty acids in hoof tissue were stearic, palmitic, oleic, and linoleic acids. LinPro® may provide an effective treatment to improve hoof growth rates in horses with otherwise healthy hooves.
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Ding LN, Liu R, Li T, Li M, Liu XY, Wang WJ, Yu YK, Cao J, Tan XL. Physiological and comparative transcriptome analyses reveal the mechanisms underlying waterlogging tolerance in a rapeseed anthocyanin-more mutant. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2022; 15:55. [PMID: 35596185 PMCID: PMC9123723 DOI: 10.1186/s13068-022-02155-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 05/11/2022] [Indexed: 12/13/2022]
Abstract
Background Rapeseed (Brassica napus) is the second largest oil crop worldwide. It is widely used in food, energy production and the chemical industry, as well as being an ornamental. Consequently, it has a large economic value and developmental potential. Waterlogging is an important abiotic stress that restricts plant growth and development. However, little is known about the molecular mechanisms underlying waterlogging tolerance in B. napus. Results In the present study, the physiological changes and transcriptomes of germination-stage rapeseed in response to waterlogging stress were investigated in the B. napus cultivar ‘Zhongshuang 11’ (ZS11) and its anthocyanin-more (am) mutant, which was identified in our previous study. The mutant showed stronger waterlogging tolerance compared with ZS11, and waterlogging stress significantly increased anthocyanin, soluble sugar and malondialdehyde contents and decreased chlorophyll contents in the mutant after 12 days of waterlogging. An RNA-seq analysis identified 1370 and 2336 differently expressed genes (DEGs) responding to waterlogging stress in ZS11 and am, respectively. An enrichment analysis revealed that the DEGs in ZS11 were predominately involved in carbohydrate metabolism, whereas those in the am mutant were particularly enriched in plant hormone signal transduction and response to endogenous stimulation. In total, 299 DEGs were identified as anthocyanin biosynthesis-related structural genes (24) and regulatory genes encoding transcription factors (275), which may explain the increased anthocyanin content in the am mutant. A total of 110 genes clustered in the plant hormone signal transduction pathway were also identified as DEGs, including 70 involved in auxin and ethylene signal transduction that were significantly changed in the mutant. Furthermore, the expression levels of 16 DEGs with putative roles in anthocyanin accumulation and biotic/abiotic stress responses were validated by quantitative real-time PCR as being consistent with the transcriptome profiles. Conclusion This study provides new insights into the molecular mechanisms of increased anthocyanin contents in rapeseed in response to waterlogging stress, which should be useful for reducing the damage caused by waterlogging stress and for further breeding new rapeseed varieties with high waterlogging tolerance. Supplementary Information The online version contains supplementary material available at 10.1186/s13068-022-02155-5.
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Affiliation(s)
- Li-Na Ding
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Rui Liu
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Teng Li
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Ming Li
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Xiao-Yan Liu
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Wei-Jie Wang
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yan-Kun Yu
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Jun Cao
- School of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Xiao-Li Tan
- School of Life Sciences, Jiangsu University, Zhenjiang, China.
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Pal L, Sandhu SK, Bhatia D, Sethi S. Genome-wide association study for candidate genes controlling seed yield and its components in rapeseed ( Brassica napus subsp. napus). PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:1933-1951. [PMID: 34629771 PMCID: PMC8484396 DOI: 10.1007/s12298-021-01060-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 08/19/2021] [Accepted: 08/28/2021] [Indexed: 06/12/2023]
Abstract
UNLABELLED Genetic improvement of seed yield per plant (SY) is one of the major objectives in Brassica napus breeding programme. SY, being a complex quantitative trait is directly and indirectly influenced by yield-component traits such as siliqua length (SL), number of seeds per siliqua (NSS), and thousand seed weight (TSW). Therefore, concurrent improvement in SL, NSS and TSW can lead to higher SY in B. napus. This study was conducted to identify significant SNPs and putative candidate genes governing SY and its component traits (SL, NSS, TSW). All these traits were evaluated in a diverse set of 200 genotypes representing diversity from wide geographical locations. Of these, a set of 125 genotypes were chosen based on pedigree diversity and multi-location trait variation for genotyping by sequencing (GBS). Best linear unbiased predictors (BLUPs) of all the traits were used for genome-wide association study (GWAS) with 85,126 SNPs obtained from GBS. A total of 16, 18, 27 and 18 SNPs were found to be significantly associated for SL, NSS, TSW and SY respectively. Based on linkage disequilibrium decay analysis, 150 kb genomic region flanking the SNP was used for the identification of underlying candidate genes for each test trait. Important candidate genes involved in phytohormone signaling (WAT1, OSR1, ARR8, CKX1, REM7, REM9, BG1) and seed storage proteins (Cruciferin) were found to have significant influence on seed weight and yield. Genes involved in sexual reproduction and fertilization (PERK7, PERK13, PRK3, GATA15, NFD6) were found to determine the number of seeds per siliqua. Several genes found in this study namely ATS3A, CKX1, SPL2, SPL6, SPL9, WAT1 showed pleiotropic effect with yield component traits. Significant SNPs and putative candidate genes identified for SL, NSS, TSW and SY could be used in marker-assisted breeding for improvement of crop yield in B. napus. Genotypes identified with high SL, NSS, TSW and SY could serve as donors in crop improvement programs in B. napus. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12298-021-01060-9.
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Affiliation(s)
- Lalit Pal
- Principal Scientist, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab 141004 India
| | - Surinder K. Sandhu
- Principal Scientist, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab 141004 India
| | - Dharminder Bhatia
- Principal Scientist, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab 141004 India
| | - Sorabh Sethi
- Principal Scientist, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab 141004 India
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Akhatar J, Singh MP, Sharma A, Kaur H, Kaur N, Sharma S, Bharti B, Sardana VK, Banga SS. Association Mapping of Seed Quality Traits Under Varying Conditions of Nitrogen Application in Brassica juncea L. Czern & Coss. Front Genet 2020; 11:744. [PMID: 33088279 PMCID: PMC7490339 DOI: 10.3389/fgene.2020.00744] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 06/22/2020] [Indexed: 12/02/2022] Open
Abstract
Indian mustard (Brassica juncea) is a major source of vegetable oil in the Indian subcontinent. The seed cake left after the oil extraction is used as livestock feed. We examined the genetic architecture of oil, protein, and glucosinolates by conducting a genome-wide association study (GWAS), using an association panel comprising 92 diverse genotypes. We conducted trait phenotyping over 2 years at two levels of nitrogen (N) application. Genotyping by sequencing was used to identify 66,835 loci, covering 18 chromosomes. Genetic diversity and phenotypic variations were high for the studied traits. Trait performances were stable when averaged over years and N levels. However, individual performances differed. General and mixed linear models were used to estimate the association between the SNP markers and the seed quality traits. Population structure, principal components (PCs) analysis, and discriminant analysis of principal components (DAPCs) were included as covariates to overcome the bias due to the population stratification. We identified 16, 23, and 27 loci associated with oil, protein, and glucosinolates, respectively. We also established LD patterns and haplotype structures for the candidate genes. The average block sizes were larger on A-genome chromosomes as compared to the B- genome chromosomes. Genetic associations differed over N levels. However, meta-analysis of GWAS datasets not only improved the power to recognize associations but also helped to identify common SNPs for oil and protein contents. Annotation of the genomic region around the identified SNPs led to the prediction of 21 orthologs of the functional candidate genes related to the biosynthesis of oil, protein, and glucosinolates. Notable among these are: LACS5 (A09), FAD6 (B05), ASN1 (A06), GTR2 (A06), CYP81G1 (B06), and MYB44 (B06). The identified loci will be very useful for marker-aided breeding for seed quality modifications in B. juncea.
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Affiliation(s)
- Javed Akhatar
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Mohini Prabha Singh
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Anju Sharma
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Harjeevan Kaur
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Navneet Kaur
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Sanjula Sharma
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Baudh Bharti
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - V K Sardana
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Surinder S Banga
- DBT Centre of Excellence on Brassicas, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
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Lu S, Aziz M, Sturtevant D, Chapman KD, Guo L. Heterogeneous Distribution of Erucic Acid in Brassica napus Seeds. FRONTIERS IN PLANT SCIENCE 2019; 10:1744. [PMID: 32082336 PMCID: PMC7001127 DOI: 10.3389/fpls.2019.01744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 12/11/2019] [Indexed: 05/03/2023]
Abstract
Brassica napus (B. napus) is the world's most widely grown temperate oilseed crop. Although breeding for human consumption has led to removal of erucic acid from refined canola oils, there is renewed interest in the industrial uses of erucic acid derived from B. napus, and there is a rich germplasm available for use. Here, low- and high-erucic acid accessions of B. napus seeds were examined for the distribution of erucic acid-containing lipids and the gene transcripts encoding the enzymes involved in pathways for its incorporation into triacylglycerols (TAGs) across the major tissues of the seeds. In general, the results indicate that a heterogeneous distribution of erucic acid across B. napus seed tissues was contributed by two isoforms (out of six) of FATTY ACYL COA ELONGASE (FAE1) and a combination of phospholipid:diacylglycerol acyltransferase (PDAT)- and diacylglycerol acyltransferase (DGAT)-mediated incorporation of erucic acid into TAGs in cotyledonary tissues. An absence of the expression of these two FAE1 isoforms accounted for the absence of erucic acid in the TAGs of the low-erucic accession.
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Affiliation(s)
- Shaoping Lu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Mina Aziz
- Center for Plant Lipid Research and Department of Biological Sciences, University of North Texas, Denton, TX, United States
- BioDiscovery Institute, University of North Texas, Denton, TX, United States
| | - Drew Sturtevant
- Center for Plant Lipid Research and Department of Biological Sciences, University of North Texas, Denton, TX, United States
- BioDiscovery Institute, University of North Texas, Denton, TX, United States
- University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Kent D. Chapman
- Center for Plant Lipid Research and Department of Biological Sciences, University of North Texas, Denton, TX, United States
- BioDiscovery Institute, University of North Texas, Denton, TX, United States
- *Correspondence: Kent D. Chapman, ; Liang Guo,
| | - Liang Guo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- *Correspondence: Kent D. Chapman, ; Liang Guo,
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