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Zhang D, Zhou H, Zhou D, Wu J, Liu L, Guo Y, Wang T, Tan C, Chen D, Ge X, Yan M. The introgression of BjMYB113 from Brassica juncea leads to purple leaf trait in Brassica napus. BMC PLANT BIOLOGY 2024; 24:735. [PMID: 39090544 PMCID: PMC11295638 DOI: 10.1186/s12870-024-05418-5] [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: 04/07/2024] [Accepted: 07/15/2024] [Indexed: 08/04/2024]
Abstract
The purple leaves of Brassica napus are abundant in anthocyanins, which are renowned for their role in conferring distinct colors, stress tolerance, and health benefits, however the genetic basis of this trait in B. napus remains largely unelucidated. Herein, the purple leaf B. napus (PL) exhibited purple pigments in the upper epidermis and a substantial increase in anthocyanin accumulation, particularly of cyanidin, compared to green leaf B. napus (GL). The genetic control of the purple leaf trait was attributed to a semi-dominant gene, pl, which was mapped to the end of chromosome A03. However, sequencing of the fragments amplified by the markers linked to pl indicated that they were all mapped to chromosome B05 from B. juncea. Within this B05 chromosomal segment, the BjMYB113 gene-specific marker showed perfect co-segregation with the purple leaf trait in the F2 population, suggesting that the BjMYB113 introgression from B. juncea was the candidate gene for the purple leaf trait in B. napus. To further verify the function of candidate gene, CRISPR/Cas9 was performed to knock out the BjMYB113 gene in PL. The three myb113 mutants exhibited evident green leaf phenotype, absence of purple pigments in the adaxial epidermis, and a significantly reduced accumulation of anthocyanin compared to PL. Additionally, the genes involved in positive regulatory (TT8), late anthocyanin biosynthesis (DFR, ANS, UFGT), as well as transport genes (TT19) were significantly suppressed in the myb113 mutants, further confirming that BjMYB113 was response for the anthocyanin accumulation in purple leaf B. napus. This study contributes to an advanced understanding of the regulation mechanism of anthocyanin accumulation in B. napus.
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Affiliation(s)
- Dawei Zhang
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life and Health Science, Hunan University of Science and Technology, Xiangtan, 411201, China
- Yuelushan Laboratory, Changsha, 410128, China
- Hunan Research Center of Heterosis Utilization in Rapeseed, Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Hongfeng Zhou
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life and Health Science, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Dinggang Zhou
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life and Health Science, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Jinfeng Wu
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life and Health Science, Hunan University of Science and Technology, Xiangtan, 411201, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Lili Liu
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life and Health Science, Hunan University of Science and Technology, Xiangtan, 411201, China
- Yuelushan Laboratory, Changsha, 410128, China
| | - Yiming Guo
- Yuelushan Laboratory, Changsha, 410128, China
- Hunan Research Center of Heterosis Utilization in Rapeseed, Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Tonghua Wang
- Yuelushan Laboratory, Changsha, 410128, China
- Hunan Research Center of Heterosis Utilization in Rapeseed, Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Chen Tan
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Daozong Chen
- College of Life Sciences, Ganzhou Key Laboratory of Greenhouse Vegetable, Gannan Normal University, Ganzhou, 341000, China
| | - Xianhong Ge
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Mingli Yan
- Yuelushan Laboratory, Changsha, 410128, China.
- Hunan Research Center of Heterosis Utilization in Rapeseed, Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China.
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Kim MS, Chae E, Min HG, Kim JG. Applicability of Brassica juncea as a bioindicator for As contamination in soil near the abandoned mine area. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 358:120805. [PMID: 38599085 DOI: 10.1016/j.jenvman.2024.120805] [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: 01/25/2024] [Revised: 03/19/2024] [Accepted: 03/30/2024] [Indexed: 04/12/2024]
Abstract
Soil monitoring in abandoned mine areas is important from the perspective of ecological and human health risk. Arsenic (As) is a predominant metalloid contaminant in abandoned mine area and its behavior has been influenced by various soil characteristics. Bioindicator can be a useful tool in terms of testing the extent to which they are uptaken by plants bioavailability. Eighteen soils near the mine tailings dam were collected to investigate the effect of As contamination on As absorption by Brassica juncea. The pH range of the experimental soils was between 4.90 and 8.55, and the total As concentrations were between 34 mg kg-1 and 3017 mg kg-1. The bioavailability of As was evaluated by Olsen method, and B. juncea was cultivated in eighteen soils for 3 weeks. Principal component analysis, correlation, and multiple regression analysis were performed to estimate a significant factor affecting As uptake by B. juncea. All statistical results indicated that As bioavailability in soil is the main factor affecting As uptake in root and shoot of B. juncea. Although translocation process, the amount of As in shoot was exponentially explained by As bioavailability in soil. This result suggests that the contamination and bioavailability of As can be confirmed only by analyzing the shoot of B. juncea, which is be easily found in environmental ecosystem, and implies the applicability of B. juncea as a bioindicator for the monitoring of As contamination and its behavior in soil ecosystem.
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Affiliation(s)
- Min-Suk Kim
- Waste Resources Management Division, Ministry of Environment, Sejong, 30103, Republic of Korea
| | - Eunji Chae
- OJeong Resilience Institute, Korea University, Seoul, 02841, Republic of Korea
| | - Hyun-Gi Min
- OJeong Resilience Institute, Korea University, Seoul, 02841, Republic of Korea
| | - Jeong-Gyu Kim
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
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Liu Q, Wang L, He L, Lu Y, Wang L, Fu S, Luo X, Zhang Y. Metabolome and Transcriptome Reveal Chlorophyll, Carotenoid, and Anthocyanin Jointly Regulate the Color Formation of Triadica sebifera. PHYSIOLOGIA PLANTARUM 2024; 176:e14248. [PMID: 38488424 DOI: 10.1111/ppl.14248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 02/16/2024] [Indexed: 03/19/2024]
Abstract
The Chinese tallow tree (Triadica sebifera) is an economically important plant on account of its ornamental value and oil-producing seeds. Leaf colour is a key characteristic of T. sebifera, with yellow-, red- and purple-leaved varieties providing visually impressive displays during autumn. In this study, we performed metabolomic and transcriptomic analyses to gain a better understanding of the mechanisms underlying leaf colour development in purple-leaved T. sebifera at three stages during the autumnal colour transition, namely, green, hemi-purple, and purple leaves. We accordingly detected 370 flavonoid metabolites and 10 anthocyanins, among the latter of which, cyanidin-3-xyloside and peonidin-3-O-glucoside were identified as the predominant compounds in hemi-purple and purple leaves. Transcriptomic analysis revealed that structural genes associated with the anthocyanin biosynthetic pathway, chlorophyll synthesis pathway and carotenoid synthesis pathway were significantly differential expressed at the three assessed colour stages. Additionally, transcription factors associated with the MYB-bHLH-WD40 complex, including 22 R2R3-MYBs, 79 bHLHs and 44 WD40 genes, were identified as candidate regulators of the anthocyanin biosynthetic pathway. Moreover, on the basis of the identified differentially accumulated anthocyanins and key genes, we generated genetic and metabolic regulatory networks for anthocyanin biosynthesis in T. sebifera. These findings provide comprehensive information on the leaf transcriptome and three pigments of T. sebifera, thereby shedding new light on the mechanisms underlying the autumnal colouring of the leaves of this tree.
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Affiliation(s)
- Qing Liu
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Leijia Wang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Lina He
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Yongkang Lu
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Lin Wang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Songling Fu
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Xumei Luo
- Anhui Academy of Forestry, People's Republic of China
| | - Yanping Zhang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
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Chen H, Chiu TY, Sahu SK, Sun H, Wen J, Sun J, Li Q, Tang Y, Jin H, Liu H. Transcriptomic analyses provide new insights into green and purple color pigmentation in Rheum tanguticum medicinal plants. PeerJ 2022; 10:e14265. [PMID: 36530396 PMCID: PMC9756867 DOI: 10.7717/peerj.14265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 09/27/2022] [Indexed: 12/15/2022] Open
Abstract
Background Rheum tanguticum Maxim. ex Balf is a traditional Chinese medicinal plant that is commonly used to treat many ailments. It belongs to the Polygonacae family and grows in northwest and southwest China. At high elevations, the color of the plant's young leaves is purple, which gradually changes to green during the growth cycle. Anthraquinone, which is known for various biological activities, is the main bioactive compound in R. tanguticum. Although a significant amount of research has been done on R. tanguticum in the past, the lack of transcriptome data limits our knowledge of the gene regulatory networks involved in pigmentation and in the metabolism of bioactive compounds in Rheum species. Methods To fill this knowledge gap, we generated high-quality RNA-seq data and performed multi-tissue transcriptomic analyses of R. tanguticum. Results We found that three chlorophyll degradation enzymes (RtPPH, RtPao and RtRCCR) were highly expressed in purple samples, which suggests that the purple pigmentation is mainly due to the effects of chlorophyll degradation. Overall, these data may aid in drafting the transcriptional network in the regulation and biosynthesis of medicinally active compounds in the future.
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Affiliation(s)
- Haixia Chen
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China,BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China
| | - Tsan-Yu Chiu
- BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China
| | - Sunil Kumar Sahu
- BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China,State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, China
| | - Haixi Sun
- BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China
| | - Jiawen Wen
- BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China
| | - Jianbo Sun
- China National GeneBank, BGI-Shenzhen, Jinsha Road, Shenzhen, China
| | - Qiyuan Li
- China National GeneBank, BGI-Shenzhen, Jinsha Road, Shenzhen, China
| | - Yangfan Tang
- Sichuan Academy of Chinese Medicine Sciences, Chengdu, Sichuan, PR China
| | - Hong Jin
- Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, China
| | - Huan Liu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China,BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China,State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, China
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Fu H, Chao H, Zhao X, Wang H, Li H, Zhao W, Sun T, Li M, Huang J. Anthocyanins identification and transcriptional regulation of anthocyanin biosynthesis in purple Brassica napus. PLANT MOLECULAR BIOLOGY 2022; 110:53-68. [PMID: 35723867 DOI: 10.1007/s11103-022-01285-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
The main anthocyanin components were identified, and the transcriptional regulation pattern of anthocyanin related genes in leaves and stem bark was elucidated in a purple B. napus. Brassica napus is one of the most important oil crops planted worldwide, and developing varieties of dual-purpose for oil and vegetable is beneficial to improve economic benefits. Anthocyanins are a class of secondary metabolites that not only make plants present beautiful colors, but have a variety of important physiological functions and biological activities. Therefore, increasing the accumulation of anthocyanin in vegetative organs can improve vegetable value of rapeseed. However, anthocyanin enriched varieties in vegetative organs are rare, and there are few studies on category identification and accumulation mechanism of anthocyanin, which limits the utilization of anthocyanins in B. napus. In this study, 157 anthocyanin biosynthesis related genes (ABGs) were identified in B. napus genome by homology comparison and collinearity analysis of genes related to anthocyanin synthesis and regulation in Arabidopsis. Moreover, five anthocyanins were identified in the stem bark and leaves of the purple B. napus PR01 by high performance liquid chromatography-mass spectrometry (HPLC-MS), and the expression characteristics of ABGs in the leaves and stem bark of PR01 were analyzed and compared with the green cultivar ZS11 by RNA-Seq. Combining further weighted gene co-expression network analysis (WGCNA), the up-regulation of transcript factors BnaA07. PAP2 and BnaC06. PAP2 were identified as the key to the up-regulation of most of anthocyanin synthesis genes that promoted anthocyanin accumulation in PR01. This study is helpful to understand the transcriptional regulation of anthocyanin biosynthesis in B. napus and provides the theoretical basis for breeding novel varieties of dual-purpose for oil and vegetable.
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Affiliation(s)
- Hong Fu
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Hongbo Chao
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China.
| | - Xuejie Zhao
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Haoyi Wang
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Huaixin Li
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Weiguo Zhao
- Hybrid Rapeseed Research Center of Shaanxi Province, Shaanxi Rapeseed Branch of National Centre for Oil Crops Genetic Improvement, Yangling, 712100, China
| | - Tao Sun
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Maoteng Li
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jinyong Huang
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China.
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Li H, Du Y, Zhang J, Feng H, Liu J, Yang G, Zhu Y. Unraveling the Mechanism of Purple Leaf Formation in Brassica napus by Integrated Metabolome and Transcriptome Analyses. FRONTIERS IN PLANT SCIENCE 2022; 13:945553. [PMID: 35903234 PMCID: PMC9315442 DOI: 10.3389/fpls.2022.945553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/13/2022] [Indexed: 05/12/2023]
Abstract
Brassica napus as both oilseed and vegetable, is widely cultivated in China. The purple leaf of B. napus is rich in anthocyanins and can provide valuable nutrients. Although several high-anthocyanin cultivars have been reported, the molecular mechanism underlying anthocyanin biosynthesis in B. napus remains lesser-known. Therefore, in this study, we conducted integrative metabolome and transcriptome analyses in three B. napus cultivars with different leaf colors. Overall, 39 flavonoids were identified (including 35 anthocyanins), and 22 anthocyanins were differentially accumulated in the leaves, contributing to the different leaf colors. Cyanidin-3,5,3'-O-triglucoside was confirmed as the main contributor of the purple leaf phenotype. Meanwhile, other anthocyanins may play important roles in deepening the color of B. napus leaves. A total of 5,069 differentially expressed genes (DEGs) and 32 overlapping DEGs were identified by RNA-sequencing; hence, the correlation between anthocyanin content and DEG expression levels was explored. Two structural genes (DFR and ANS), three GSTs (homologous to TT19), and 68 differentially expressed transcription factors (TFs), especially MYB-related TFs and WRKY44, were identified in three B. napus varieties characterized by different leaf color, thereby indicating that these genes may contribute to anthocyanin biosynthesis, transport, or accumulation in B. napus leaves. The findings of study provide important insights that may contribute to gaining a better understanding of the transcriptional regulation of anthocyanin metabolism in B. napus.
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Identification, Characterization and Expression Analysis of Anthocyanin Biosynthesis-related bHLH Genes in Blueberry ( Vaccinium corymbosum L.). Int J Mol Sci 2021; 22:ijms222413274. [PMID: 34948071 PMCID: PMC8708680 DOI: 10.3390/ijms222413274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/01/2021] [Accepted: 12/07/2021] [Indexed: 12/21/2022] Open
Abstract
Basic helix-loop-helix proteins (bHLHs) play very important roles in the anthocyanin biosynthesis of many plant species. However, the reports on blueberry anthocyanin biosynthesis-related bHLHs were very limited. In this study, six anthocyanin biosynthesis-related bHLHs were identified from blueberry genome data through homologous protein sequence alignment. Among these blueberry bHLHs, VcAN1, VcbHLH42-1, VcbHLH42-2 and VcbHLH42-3 were clustered into one group, while VcbHLH1-1 and VcbHLH1-2 were clustered into the other group. All these bHLHs were of the bHLH-MYC_N domain, had DNA binding sites and reported conserved amino acids in the bHLH domain, indicating that they were all G-box binding proteins. Protein subcellular location prediction result revealed that all these bHLHs were nucleus-located. Gene structure analysis showed that VcAN1 gDNA contained eight introns, while all the others contained seven introns. Many light-, phytohormone-, stress- and plant growth and development-related cis-acting elements and transcription factor binding sites (TFBSs) were identified in their promoters, but the types and numbers of cis-elements and TFBSs varied greatly between the two bHLH groups. Quantitative real-time PCR results showed that VcAN1 expressed highly in old leaf, stem and blue fruit, and its expression increased as the blueberry fruit ripened. Its expression in purple podetium and old leaf was respectively significantly higher than in green podetium and young leaf, indicating that VcAN1 plays roles in anthocyanin biosynthesis regulation not only in fruit but also in podetium and leaf. VcbHLH1-1 expressed the highest in young leaf and stem, and the lowest in green fruit. The expression of VcbHLH1-1 also increased as the fruit ripened, and its expression in blue fruit was significantly higher than in green fruit. VcbHLH1-2 showed high expression in stem but low expression in fruit, especially in red fruit. Our study indicated that the anthocyanin biosynthesis regulatory functions of these bHLHs showed certain spatiotemporal specificity. Additionally, VcAN1 might be a key gene controlling the anthocyanin biosynthesis in blueberry, whose function is worth exploring further for its potential applications in plant high anthocyanin breeding.
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He D, Zhang D, Li T, Liu L, Zhou D, Kang L, Wu J, Liu Z, Yan M. Whole-Genome Identification and Comparative Expression Analysis of Anthocyanin Biosynthetic Genes in Brassica napus. Front Genet 2021; 12:764835. [PMID: 34868247 PMCID: PMC8636775 DOI: 10.3389/fgene.2021.764835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 10/11/2021] [Indexed: 12/05/2022] Open
Abstract
Anthocyanins contribute to most colors of plants and play protective roles in response to abiotic stresses. Brassica napus is widely cultivated worldwide as both an oilseed and a vegetable. However, only several high anthocyanin-containing cultivars have been reported, and the mechanisms of anthocyanin accumulation have not been well-elucidated in B. napus. Here, the phenotype, comparative whole-genome identification, and gene expression analysis were performed to investigate the dynamic change of the anthocyanin content and the gene expression patterns of anthocyanin biosynthetic genes (ABGs) in B. napus. A total of 152 ABGs were identified in the B. napus reference genome. To screen out the critical genes involved in anthocyanin biosynthesis and accumulation, the RNA-seq of young leaves of two B. napus lines with purple leaves (PL) or green leaves (GL), and their F1 progeny at 41, 91, and 101 days were performed to identify the differentially expressed genes. The comparative expression analysis of these ABGs indicated that the upregulation of TT8 together with its target genes (such as DFR, ANS, UFGT, and TT19) might promote the anthocyanin accumulation in PL at the early developmental stage (41–91 days). While the downregulation of those ABGs and anthocyanin degradation at the late developmental stage (91–101 days) might result in the decrease in anthocyanin accumulation. Our results would enhance the understanding of the regulatory network of anthocyanin dynamic accumulation in B. napus.
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Affiliation(s)
- Dan He
- School of Life Science, Hunan University of Science and Technology, Xiangtan, China.,Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Xiangtan, China
| | - Dawei Zhang
- School of Life Science, Hunan University of Science and Technology, Xiangtan, China.,Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Xiangtan, China
| | - Ting Li
- School of Life Science, Hunan University of Science and Technology, Xiangtan, China.,Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Xiangtan, China
| | - Lili Liu
- School of Life Science, Hunan University of Science and Technology, Xiangtan, China.,Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Xiangtan, China
| | - Dinggang Zhou
- School of Life Science, Hunan University of Science and Technology, Xiangtan, China.,Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Xiangtan, China
| | - Lei Kang
- Oilseed Research Institute, Hunan Agricultural University, Changsha, China
| | - Jinfeng Wu
- School of Life Science, Hunan University of Science and Technology, Xiangtan, China.,Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, China
| | - Zhongsong Liu
- Oilseed Research Institute, Hunan Agricultural University, Changsha, China
| | - Mingli Yan
- School of Life Science, Hunan University of Science and Technology, Xiangtan, China.,Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Xiangtan, China
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Mohd Saad NS, Severn-Ellis AA, Pradhan A, Edwards D, Batley J. Genomics Armed With Diversity Leads the Way in Brassica Improvement in a Changing Global Environment. Front Genet 2021; 12:600789. [PMID: 33679880 PMCID: PMC7930750 DOI: 10.3389/fgene.2021.600789] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/15/2021] [Indexed: 12/14/2022] Open
Abstract
Meeting the needs of a growing world population in the face of imminent climate change is a challenge; breeding of vegetable and oilseed Brassica crops is part of the race in meeting these demands. Available genetic diversity constituting the foundation of breeding is essential in plant improvement. Elite varieties, land races, and crop wild species are important resources of useful variation and are available from existing genepools or genebanks. Conservation of diversity in genepools, genebanks, and even the wild is crucial in preventing the loss of variation for future breeding efforts. In addition, the identification of suitable parental lines and alleles is critical in ensuring the development of resilient Brassica crops. During the past two decades, an increasing number of high-quality nuclear and organellar Brassica genomes have been assembled. Whole-genome re-sequencing and the development of pan-genomes are overcoming the limitations of the single reference genome and provide the basis for further exploration. Genomic and complementary omic tools such as microarrays, transcriptomics, epigenetics, and reverse genetics facilitate the study of crop evolution, breeding histories, and the discovery of loci associated with highly sought-after agronomic traits. Furthermore, in genomic selection, predicted breeding values based on phenotype and genome-wide marker scores allow the preselection of promising genotypes, enhancing genetic gains and substantially quickening the breeding cycle. It is clear that genomics, armed with diversity, is set to lead the way in Brassica improvement; however, a multidisciplinary plant breeding approach that includes phenotype = genotype × environment × management interaction will ultimately ensure the selection of resilient Brassica varieties ready for climate change.
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Affiliation(s)
| | | | | | | | - Jacqueline Batley
- School of Biological Sciences Western Australia and UWA Institute of Agriculture, University of Western Australia, Perth, WA, Australia
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10
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Ahmad A, Khan WU, Ali Shah A, Yasin NA, Naz S, Ali A, Tahir A, Iram Batool A. Synergistic effects of nitric oxide and silicon on promoting plant growth, oxidative stress tolerance and reduction of arsenic uptake in Brassica juncea. CHEMOSPHERE 2021; 262:128384. [PMID: 33182105 DOI: 10.1016/j.chemosphere.2020.128384] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/09/2020] [Accepted: 09/16/2020] [Indexed: 05/17/2023]
Abstract
Arsenic (As) polluted food chain has become a serious issue for the growth and development of humans, animals and plants. Nitric oxide (NO) or silicon (Si) may mitigate As toxicity. However, the combined application of NO and Si in mitigating As uptake and phytotoxicity in Brassica juncea is unknown. Hence, the collegial effect of sodium nitroprusside (SNP), a NO donor and Si application on B. juncea growth, gas exchange parameters, antioxidant system and As uptake was examined in a greenhouse experiment. Arsenic toxicity injured cell membrane as signposted by the elevated level of malondialdehyde (MDA) and hydrogen peroxide (H2O2), thus decreasing the growth of stressed plants. Moreover, As stress negatively affected gas exchange parameters and antioxidative system of plants. However, NO or/and Si alleviated As induced oxidative stress through increasing the activity of superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR), glutathione S-transferase (GST), glutathione (GSH), along with thiol and proline synthesis. Furthermore, plants treated with co-application of NO and Si showed improved growth, gas attributes and decreased As uptake under As regimes. The current study highlights that NO and Si synergistically interact to mitigate detrimental effects of As stress through reducing As uptake. Our findings recommend combined NO and Si application in As spiked soils for improvement of plant growth and stress alleviation.
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Affiliation(s)
- Aqeel Ahmad
- Guangdong Key Laboratory for New Technology Research of Vegetables/ Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Waheed Ullah Khan
- College of Earth and Environmental Sciences, University of the Punjab, Lahore, Pakistan
| | - Anis Ali Shah
- Department of Botany, University of Narowal, Pakistan
| | | | - Shagufta Naz
- Department of Biotechnology, Lahore College for Women University, Pakistan
| | - Aamir Ali
- Department of Botany, University of Sargodha, Pakistan
| | - Arifa Tahir
- Department of Biotechnology, Lahore College for Women University, Pakistan
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Heng S, Cheng Q, Zhang T, Liu X, Huang H, Yao P, Liu Z, Wan Z, Fu T. Fine-mapping of the BjPur gene for purple leaf color in Brassica juncea. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:2989-3000. [PMID: 32870325 DOI: 10.1007/s00122-020-03634-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/05/2020] [Indexed: 05/26/2023]
Abstract
Purple leaves are rich in health-protecting anthocyanins and food colorants in Brassica juncea. But the causal gene, which is related to leaf color formation, have not been reported in B. juncea. Anthocyanins mainly accumulated throughout the adaxial and abaxial epidermal leaf cells of purple leaves. A genetic analysis indicated that an incompletely dominant gene controls the purple leaf trait in B. juncea. Furthermore, the BjPur gene, which increased anthocyanin accumulation in purple-leaf mustard, was cloned. Blast and phylogenetic analyses revealed that BjPur encodes a new R2R3-MYB transcription factor. Sequence analysis of two alleles revealed a DNA sequence insertion in the first intron of BjPur in green leaves parent line (LY) when compared with the BjPur gene in the purple-leaf parent line (ZY). And this insertion greatly reduced the transcription of BjPur in green leaves. In purple-leaf plants, the transcript level of BjPur was significantly higher in leaves than in roots, stems, siliques, and flower buds. Additionally, molecular markers linked to leaf color were developed to distinguish different genotypes of B. juncea. These results will be helpful for the genetic improvement of the purple leaf color in B. juncea.
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Affiliation(s)
- Shuangping Heng
- College of Horticulture and Forestry, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
- College of Life Science, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Qiqi Cheng
- College of Horticulture and Forestry, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Tian Zhang
- College of Horticulture and Forestry, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xujia Liu
- College of Horticulture and Forestry, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hao Huang
- College of Life Science, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Peijie Yao
- College of Horticulture and Forestry, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhixin Liu
- College of Horticulture and Forestry, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhengjie Wan
- College of Horticulture and Forestry, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Tingdong Fu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
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