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Zheng T, Tian M, Deng Z, Tang Q, Hu Z, Wang G, Zeng H. UPLC-MS/MS reveals the differences in lipids composition of Camellia oleifera from northern margin distribution area. Food Chem X 2024; 23:101629. [PMID: 39071932 PMCID: PMC11279709 DOI: 10.1016/j.fochx.2024.101629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 07/05/2024] [Accepted: 07/05/2024] [Indexed: 07/30/2024] Open
Abstract
The lipids accumulation characteristics in 23Camellia oleifera lines from northern margin distribution area were investigated through quantitative lipidomics. Combined lipids content-function analysis indicated that NQ1, HT1, HT2, ZA2, ZB1, ZB2, and SN2 lines had potential to develop functional foods due to abundant glycerolipids (GLs), glycerophospholipids (GPs), fatty acids (FAs), and prenol lipids (PRs). 673 lipids components were detected, and 293 differential components were identified in NQ1, ZA2, HB1, and HT1. 4 kinds free fatty acids (FFAs) were higher in NQ1, 5 triglycerides (TGs) were higher in HT1, and 2 phosphatidyl serines (PSs) and 1 phosphatidyl glycerol (PG) were higher in ZA2. GLs, GPs, and FFAs had strong relation at intra- and inter-category level. Glycerolipid metabolism, glycerophospholipid metabolism, and fatty acid biosynthesis were the significantly differential lipids pathways. Our study elucidated lipids differences of 23 C. oleifera lines, and offered valuable references for lipids biosynthesis, directional breeding, and lipids utilization.
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Affiliation(s)
- Tao Zheng
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, Shaanxi, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment (Incubation), Hanzhong 723001, Shaanxi, China
- Collaborative Innovation Center for Comprehensive Development of Biological Resources in Qinba Mountain Area of Southern Shaanxi, Hanzhong 723001, Shaanxi, China
- Shaanxi Key Laboratory of Bio-resources, Hanzhong 723001, Shaanxi, China
| | - Min Tian
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, Shaanxi, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment (Incubation), Hanzhong 723001, Shaanxi, China
- Collaborative Innovation Center for Comprehensive Development of Biological Resources in Qinba Mountain Area of Southern Shaanxi, Hanzhong 723001, Shaanxi, China
- Shaanxi Key Laboratory of Bio-resources, Hanzhong 723001, Shaanxi, China
| | - Zhuang Deng
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, Shaanxi, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment (Incubation), Hanzhong 723001, Shaanxi, China
- Collaborative Innovation Center for Comprehensive Development of Biological Resources in Qinba Mountain Area of Southern Shaanxi, Hanzhong 723001, Shaanxi, China
- Shaanxi Key Laboratory of Bio-resources, Hanzhong 723001, Shaanxi, China
| | - Qi Tang
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, Shaanxi, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment (Incubation), Hanzhong 723001, Shaanxi, China
- Collaborative Innovation Center for Comprehensive Development of Biological Resources in Qinba Mountain Area of Southern Shaanxi, Hanzhong 723001, Shaanxi, China
- Shaanxi Key Laboratory of Bio-resources, Hanzhong 723001, Shaanxi, China
| | - Zhubing Hu
- Henan University, Kaifeng 475001, Henan, China
| | - Guodong Wang
- Shaanxi Normal University, Xi'an, 710119, Shaanxi, China
| | - Haitao Zeng
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, Shaanxi, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment (Incubation), Hanzhong 723001, Shaanxi, China
- Collaborative Innovation Center for Comprehensive Development of Biological Resources in Qinba Mountain Area of Southern Shaanxi, Hanzhong 723001, Shaanxi, China
- Shaanxi Key Laboratory of Bio-resources, Hanzhong 723001, Shaanxi, China
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Yang D, Wang R, Lai H, He Y, Chen Y, Xun C, Zhang Y, He Z. Comparative Transcriptomic and Lipidomic Analysis of Fatty Acid Accumulation in Three Camellia oleifera Varieties During Seed Maturing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39084609 DOI: 10.1021/acs.jafc.4c03614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
Camellia oleifera, a major woody oil crop in China, produces tea oil rich in unsaturated fatty acids, earning it names like liquid gold and eastern olive oil. This study provides an integrated investigation of the transcriptome and lipidome within seeds at the maturing process across three C. oleifera varieties, revealing a significant relationship between fatty acid production and genes involved in lipid synthesis. Through transcriptomic analysis, 26,344 genes with varied expression were found. Functional enrichment analysis highlighted that pathways related to starch and sucrose metabolism, plant hormone signal transduction, and lipid accumulation were highly enriched among the differentially expressed genes. Coordinated high expression of key genes (ACCase, KAS I, KAS II, KAS III, KAR, HAD, EAR, SAD, LPAAT, LACS, DGAT, PDAT) during the late maturation stage contributes largely to high oil content. Additionally, expression variations of SAD and FADs among different varieties were explored. The analysis suggests that high expression of genes such as FAD3, FAD7, and FAD8 notably increased linolenic acid content. This research provides new insights into the molecular mechanisms of oil biosynthesis in C. oleifera, offering valuable references for improving yield and quality.
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Affiliation(s)
- Dayu Yang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Rui Wang
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha 410004, China
- National Engineering Research Center for Oil-Tea Camellia, State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410116, China
| | - Hanggui Lai
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yimin He
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yongzhong Chen
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha 410004, China
- National Engineering Research Center for Oil-Tea Camellia, State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410116, China
| | - Chengfeng Xun
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha 410004, China
- National Engineering Research Center for Oil-Tea Camellia, State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410116, China
| | - Ying Zhang
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha 410004, China
- National Engineering Research Center for Oil-Tea Camellia, State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410116, China
| | - Zhilong He
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha 410004, China
- National Engineering Research Center for Oil-Tea Camellia, State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410116, China
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Zhang X, He W, Wang X, Duan Y, Li Y, Wang Y, Jiang Q, Liao B, Zhou S, Li Y. Genome-Wide Analyses of MADS-Box Genes Reveal Their Involvement in Seed Development and Oil Accumulation of Tea-Oil Tree ( Camellia oleifera). Int J Genomics 2024; 2024:3375173. [PMID: 39105136 PMCID: PMC11300058 DOI: 10.1155/2024/3375173] [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: 10/03/2023] [Revised: 07/05/2024] [Accepted: 07/08/2024] [Indexed: 08/07/2024] Open
Abstract
The seeds of Camellia oleifera produce high amount of oil, which can be broadly used in the fields of food, industry, and medicine. However, the molecular regulation mechanisms of seed development and oil accumulation in C. oleifera are unclear. In this study, evolutionary and expression analyses of the MADS-box gene family were performed across the C. oleifera genome for the first time. A total of 86 MADS-box genes (ColMADS) were identified, including 60 M-type and 26 MIKC members. More gene duplication events occurred in M-type subfamily (6) than that in MIKC subfamily (2), and SEP-like genes were lost from the MIKCC clade. Furthermore, 8, 15, and 17 differentially expressed ColMADS genes (DEGs) were detected between three developmental stages of seed (S1/S2, S2/S3, and S1/S3), respectively. Among these DEGs, the STK-like ColMADS12 and TT16-like ColMADS17 were highly expressed during the seed formation (S1 and S2), agreeing with their predicted functions to positively regulate the seed organogenesis and oil accumulation. While ColMADS57 and ColMADS07 showed increasing expression level with the seed maturation (S2 and S3), conforming to their potential roles in promoting the seed ripening. In all, these results revealed a critical role of MADS-box genes in the C. oleifera seed development and oil accumulation, which will contribute to the future molecular breeding of C. oleifera.
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Affiliation(s)
- Xianzhi Zhang
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Heyuan Branch CenterGuangdong Laboratory for Lingnan Modern Agriculture, Heyuan 517500, China
| | - Wenliang He
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Xinyi Wang
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yongliang Duan
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yongjuan Li
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yi Wang
- School of Mechanic and Electronic EngineeringZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Qingbin Jiang
- Research Institute of Tropical ForestryChinese Academy of Forestry, Guangzhou 510520, China
| | - Boyong Liao
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Sheng Zhou
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yongquan Li
- College of Horticulture and Landscape ArchitectureZhongkai University of Agriculture and Engineering, Guangzhou 510225, China
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Du B, Cao Y, Zhou J, Chen Y, Ye Z, Huang Y, Zhao X, Zou X, Zhang L. Sugar import mediated by sugar transporters and cell wall invertases for seed development in Camellia oleifera. HORTICULTURE RESEARCH 2024; 11:uhae133. [PMID: 38974190 PMCID: PMC11226869 DOI: 10.1093/hr/uhae133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 04/28/2024] [Indexed: 07/09/2024]
Abstract
Seed development and yield depend on the transport and supply of sugar. However, an insufficient supply of nutrients from maternal tissues to embryos results in seed abortion and yield reduction in Camellia oleifera. In this study, we systematically examined the route and regulatory mechanisms of sugar import into developing C. oleifera seeds using a combination of histological observations, transcriptome profiling, and functional analysis. Labelling with the tracer carboxyfluorescein revealed a symplasmic route in the integument and an apoplasmic route for postphloem transport at the maternal-filial interface. Enzymatic activity and histological observation showed that at early stages [180-220 days after pollination (DAP)] of embryo differentiation, the high hexose/sucrose ratio was primarily mediated by acid invertases, and the micropylar endosperm/suspensor provides a channel for sugar import. Through Camellia genomic profiling, we identified three plasma membrane-localized proteins including CoSWEET1b, CoSWEET15, and CoSUT2 and one tonoplast-localized protein CoSWEET2a in seeds and verified their ability to transport various sugars via transformation in yeast mutants and calli. In situ hybridization and profiling of glycometabolism-related enzymes further demonstrated that CoSWEET15 functions as a micropylar endosperm-specific gene, together with the cell wall acid invertase CoCWIN9, to support early embryo development, while CoSWEET1b, CoSWEET2a, and CoSUT2 function at transfer cells and chalazal nucellus coupled with CoCWIN9 and CoCWIN11 responsible for sugar entry in bulk into the filial tissue. Collectively, our findings provide the first comprehensive evidence of the molecular regulation of sugar import into and within C. oleifera seeds and provide a new target for manipulating seed development.
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Affiliation(s)
- Bingshuai Du
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Yibo Cao
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Jing Zhou
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Yuqing Chen
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Zhihua Ye
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Yiming Huang
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Xinyan Zhao
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Xinhui Zou
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Lingyun Zhang
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, No.35 Qinghua East Road, Haidian District, Beijing 100083, China
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5
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Zhang S, Yu X, Chen M, Chang C, Zhu J, Zhao H. Comparative Transcriptome and Metabolome Profiling Reveal Mechanisms of Red Leaf Color Fading in Populus × euramericana cv. 'Zhonghuahongye'. PLANTS (BASEL, SWITZERLAND) 2023; 12:3511. [PMID: 37836251 PMCID: PMC10575148 DOI: 10.3390/plants12193511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/03/2023] [Accepted: 10/05/2023] [Indexed: 10/15/2023]
Abstract
Anthocyanins are among the flavonoids that serve as the principal pigments affecting the color of plants. During leaf growth, the leaf color of 'Zhonghuahongye' gradually changes from copper-brown to yellow-green. At present, the mechanism of color change at different stages has not yet been discovered. To find this, we compared the color phenotype, metabolome, and transcriptome of the three leaf stages. The results showed that the anthocyanin content of leaves decreased by 62.5% and the chlorophyll content increased by 204.35%, 69.23%, 155.56% and 60%, respectively. Differential metabolites and genes were enriched in the pathway related to the synthesis of 'Zhonghuahongye' flavonoids and anthocyanins and to the biosynthesis of secondary metabolites. Furthermore, 273 flavonoid metabolites were detected, with a total of eight classes. DFR, FLS and ANS downstream of anthocyanin synthesis may be the key structural genes in reducing anthocyanin synthesis and accumulation in the green leaf of 'Zhonghuahongye'. The results of multi-omics analysis showed that the formation of color was primarily affected by anthocyanin regulation and its related synthesis-affected genes. This study preliminarily analyzed the green regression gene and metabolic changes in 'Zhonghuahongye' red leaves and constitutes a reference for the molecular breeding of 'Zhonghuahongye' red leaves.
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Affiliation(s)
- Shaowei Zhang
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, 3 Weiwu Road, Zhengzhou 450003, China;
- College of Rural Revitalization, The Open University of Henan, 36 Longzi Lake North Road, Zhengzhou 450046, China
| | - Xinran Yu
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, 3 Weiwu Road, Zhengzhou 450003, China;
| | - Mengjiao Chen
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1st Road, Guangzhou 510520, China;
| | - Cuifang Chang
- The College of Landscape Architecture and the Arts, Henan Agricultural University, 63 Agricultural Road, Zhengzhou 450002, China;
| | - Jingle Zhu
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, 3 Weiwu Road, Zhengzhou 450003, China;
| | - Han Zhao
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, 3 Weiwu Road, Zhengzhou 450003, China;
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Wang Y, Li J, Guo P, Liu Q, Ren S, Juan L, He J, Tan X, Yan J. Ectopic expression of Camellia oleifera Abel. gibberellin 20-oxidase gene increased plant height and promoted secondary cell walls deposition in Arabidopsis. PLANTA 2023; 258:65. [PMID: 37566145 DOI: 10.1007/s00425-023-04222-z] [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: 12/13/2022] [Accepted: 08/02/2023] [Indexed: 08/12/2023]
Abstract
MAIN CONCLUSION Ectopic expression of Camellia oleifera Abel. gibberellin 20-oxidase 1 caused a taller phenotype, promoted secondary cell wall deposition, leaf enlargement, and early flowering, and reduced chlorophyll and anthocyanin accumulation and seed enlargement phenotype in Arabidopsis. Plant height and secondary cell wall (SCW) deposition are important plant traits. Gibberellins (GAs) play important roles in regulating plant height and SCWs deposition. Gibberellin 20-oxidase (GA20ox) is an important enzyme involved in GA biosynthesis. In the present study, we identified a GA synthesis gene in Camellia oleifera. The total length of the CoGA20ox1 gene sequence was 1146 bp, encoding 381 amino acids. Transgenic plants with CoGA20ox1 had a taller phenotype; a seed enlargement phenotype; promoted SCWs deposition, leaf enlargement, and early flowering; and reduced chlorophyll and anthocyanin accumulation. Genetic analysis showed that the mutant ga20ox1-3 Arabidopsis partially rescued the phenotype of CoGA20ox1 overexpression plants. The results showed that CoGA20ox1 participates in the growth and development of C. oleifera. The morphological changes in CoGA20ox1 overexpressed plants provide a theoretical basis for further exploration of GA biosynthesis and analysis of the molecular mechanism in C. oleifera.
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Affiliation(s)
- Ying Wang
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China
| | - Jian'an Li
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China.
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China.
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China.
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China.
| | - Purui Guo
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China
| | - Qian Liu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China
| | - Shuangshuang Ren
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China
| | - Lemei Juan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China
| | - Jiacheng He
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China
| | - Xiaofeng Tan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China.
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China.
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China.
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China.
| | - Jindong Yan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, 410004, China.
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forest Industry of Hunan Province, Changsha, 410004, China.
- Yuelu Mountain Laboratory Non-Wood Forests Variety Innovation Center, Changsha, 410004, China.
- Key Laboratory of Breeding and Cultivation of Economic Forest, State Forestry and Grassland Administration, Changsha, 410004, China.
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7
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Chen M, Zhang Y, Du Z, Kong X, Zhu X. Integrative Metabolic and Transcriptomic Profiling in Camellia oleifera and Camellia meiocarpa Uncover Potential Mechanisms That Govern Triacylglycerol Degradation during Seed Desiccation. PLANTS (BASEL, SWITZERLAND) 2023; 12:2591. [PMID: 37514206 PMCID: PMC10385360 DOI: 10.3390/plants12142591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/01/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023]
Abstract
Camellia seed oil is a top-end quality of cooking oil in China. The oil quality and quantity are formed during seed maturation and desiccation. So far, it remains largely unresolved whether lipid degradation occurs and contributes to Camellia oil traits. In this study, three different Camellia germplasms, C. oleifera cv. Min 43 (M43), C. meiocarpa var. Qingguo (QG), and C. meiocarpa cv Hongguo (HG) were selected, their seed oil contents and compositions were quantified across different stages of seed desiccation. We found that at the late stage of desiccation, M43 and QG lost a significant portion of seed oil, while such an event was not observed in HG. To explore the molecular bases for the oil loss In M43, the transcriptomic profiling of M43 and HG was performed at the early and the late seed desiccation, respectively, and differentially expressed genes (DEGs) from the lipid metabolic pathway were identified and analyzed. Our data demonstrated that different Camellia species have diverse mechanisms to regulate seed oil accumulation and degradation, and that triacylglycerol-to-terpenoid conversion could account for the oil loss in M43 during late seed desiccation.
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Affiliation(s)
- Mingjie Chen
- International Joint Laboratory of Biology and High Value Utilization of Camellia oleifera in Henan Province, College of Life Sciences, Xinyang Normal University, Xinyang 464000, China
- Center for Horticultural Biology and Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yi Zhang
- Center for Horticultural Biology and Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- School of Life Sciences, Nanchang University, Nanchang 330031, China
| | - Zhenghua Du
- Center for Horticultural Biology and Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiangrui Kong
- Tea Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350012, China
| | - Xiaofang Zhu
- Center for Horticultural Biology and Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Xianyang Jingwei Fu Tea Co., Ltd., Xianyang 712044, China
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8
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Song Q, Gong W, Yu X, Ji K, Jiang Y, Chang Y, Yuan D. Transcriptome and Anatomical Comparisons Reveal the Effects of Methyl Jasmonate on the Seed Development of Camellia oleifera. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:6747-6762. [PMID: 37026572 DOI: 10.1021/acs.jafc.3c00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Seed is a major storage organ that determines the yield and quality of Camellia oleifera (C. oleifera). Methyl jasmonate (MeJA) is a signaling molecule involved in plant growth and development. However, the role of MeJA in the development of C. oleifera seeds remains a mystery. This study demonstrated that the larger seeds induced by MeJA resulted from more cell numbers and a larger cell area in the outer seed coat and embryo at the cellular level. At the molecular level, MeJA could regulate the expression of factors in the known signaling pathways of seed size control as well as cell proliferation and expansion, resulting in larger seeds. Furthermore, the accumulation of oil and unsaturated fatty acids due to MeJA-inducement was attributed to the increased expression of fatty acid biosynthesis-related genes but reduced expression of fatty acid degradation-related genes. CoMYC2, a key regulator in jasmonate signaling, was considered a potential hub regulator which directly interacted with three hub genes (CoCDKB2-3, CoCYCB2-3, and CoXTH9) related to the seed size and two hub genes (CoACC1 and CoFAD2-3) related to oil accumulation and fatty acid biosynthesis by binding to their promoters. These findings provide an excellent target for the improvement of the yield and quality in C. oleifera.
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Affiliation(s)
- Qiling Song
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Wenfang Gong
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Xinran Yu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Ke Ji
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Yi Jiang
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Yihong Chang
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Deyi Yuan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of the Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
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Li H, Ma X, Wang W, Zhang J, Liu Y, Yuan D. Enhancing the accumulation of linoleic acid and α-linolenic acid through the pre-harvest ethylene treatment in Camellia oleifera. FRONTIERS IN PLANT SCIENCE 2023; 14:1080946. [PMID: 36909386 PMCID: PMC9999010 DOI: 10.3389/fpls.2023.1080946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
Camellia oleifera Abel. (C. oleifera) is an important woody edible oil tree species in China. The quality of C. oleifera oil (tea oil) is mainly determined by the contents of linoleic acid (LA) and α-linolenic acid (ALA). However, how to increase the contents of LA and ALA in tea oil and the corresponding regulating mechanism have not been clarified. In the present study, we found that the LA and ALA contents in C. oleifera seeds were significant positively associated with the concentrations of ethephon and were decreased by ethylene inhibitor treatment. Furthermore, 1.5 g L-1 ethephon could receive an optimal LA and ALA contents without adverse effects to the growth of 'Huashuo' trees in this study. The ethephon treatment also increased the contents of 1-aminocyclopropane-1-carboxylic acid (ACC), sucrose, soluble sugar and reducing sugar contents in seeds. Transcriptome analysis further suggested that exogenous ethephon application enhanced the accumulation of LA and ALA via regulating genes involved in LA and ALA metabolism, plant hormone signal transduction pathways, and starch and sucrose metabolism. Our findings confirm the role of ethylene in LA and ALA regulation and provide new insights into the potential utilization of ethylene as a LA and ALA inducer in C. oleifera cultivation.
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Affiliation(s)
| | | | | | | | | | - Deyi Yuan
- *Correspondence: Xiaoling Ma, ; Deyi Yuan,
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10
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Tong H, Deng H, Han Z. Genetic differentiation and genetic structure of mixed-ploidy Camellia hainanica populations. PeerJ 2023; 11:e14756. [PMID: 36852222 PMCID: PMC9961093 DOI: 10.7717/peerj.14756] [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: 09/12/2022] [Accepted: 12/27/2022] [Indexed: 02/24/2023] Open
Abstract
Camellia hainanica, which is common in China's Hainan Province, is an important woody olive tree species. Due to many years of geographic isolation, C. hainanica has not received the attention it deserves, which limits the exploitation of germplasm resources. Therefore, it is necessary to study population genetic characteristics for further utilization and conservation of C. hainanica. In this study, 96 individuals in six wild Camellia hainanica populations were used for ploidy analysis of the chromosome number, and the genetic diversity and population structure were investigated using 12 pairs of SSR primers. The results show complex ploidy differentiation in C. hainanica species. The ploidy of wild C. hainanica includes tetraploid, pentaploid, hexaploid, heptaploid, octoploid and decaploid species. Genetic analysis shows that genetic diversity and genetic differentiation among populations are low. Populations can be divided into two clusters based on their genetic structure, which matches their geographic location. Finally, to further maintain the genetic diversity of C. hainanica, ex-situ cultivation and in-situ management measures should be considered to protect it in the future.
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Affiliation(s)
- Hailang Tong
- Central South University of Forestry and Technology, The College of Forestry, Changsha, China,Central South University of Forestry and Technology, The Laboratory of Forestry Genetics, Changsha, China
| | - Hongda Deng
- Central South University of Forestry and Technology, The College of Forestry, Changsha, China,Central South University of Forestry and Technology, The Laboratory of Forestry Genetics, Changsha, China
| | - Zhiqiang Han
- Central South University of Forestry and Technology, The College of Forestry, Changsha, China,Central South University of Forestry and Technology, The Laboratory of Forestry Genetics, Changsha, China
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11
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Li Y, Tan Z, Zeng C, Xiao M, Lin S, Yao W, Li Q, Guo L, Lu S. Regulation of seed oil accumulation by lncRNAs in Brassica napus. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:22. [PMID: 36765368 PMCID: PMC9921586 DOI: 10.1186/s13068-022-02256-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 12/28/2022] [Indexed: 02/12/2023]
Abstract
BACKGROUND Studies have indicated that long non-coding RNAs (lncRNAs) play important regulatory roles in many biological processes. However, the regulation of seed oil biosynthesis by lncRNAs remains largely unknown. RESULTS We comprehensively identified and characterized the lncRNAs from seeds in three developing stages in two accessions of Brassica napus (B. napus), ZS11 (high oil content) and WH5557 (low oil content). Finally, 8094 expressed lncRNAs were identified. LncRNAs MSTRG.22563 and MSTRG.86004 were predicted to be related to seed oil accumulation. Experimental results show that the seed oil content is decreased by 3.1-3.9% in MSTRG.22563 overexpression plants, while increased about 2% in MSTRG.86004, compared to WT. Further study showed that most genes related to lipid metabolism had much lower expression, and the content of some metabolites in the processes of respiration and TCA (tricarboxylic acid) cycle was reduced in MSTRG.22563 transgenic seeds. The expression of genes involved in fatty acid synthesis and seed embryonic development (e.g., LEC1) was increased, but genes related to TAG assembly was decreased in MSTRG.86004 transgenic seeds. CONCLUSION Our results suggest that MSTRG.22563 might impact seed oil content by affecting the respiration and TCA cycle, while MSTRG.86004 plays a role in prolonging the seed developmental time to increase seed oil accumulation.
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Affiliation(s)
- Yuqing Li
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Zengdong Tan
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Chenghao Zeng
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Mengying Xiao
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Shengli Lin
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Wei Yao
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Qing Li
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Liang Guo
- grid.35155.370000 0004 1790 4137National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China ,Hubei Hongshan Laboratory, Wuhan, 430070 China ,grid.35155.370000 0004 1790 4137Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, 430070 China ,grid.410727.70000 0001 0526 1937Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Genome Analysis Laboratory of the Ministry of Agriculture, Chinese Academy of Agricultural Sciences, Shenzhen, 518120 China
| | - Shaoping Lu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China. .,Hubei Hongshan Laboratory, Wuhan, 430070, China.
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12
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Ye C, He Z, Peng J, Wang R, Wang X, Fu M, Zhang Y, Wang A, Liu Z, Jia G, Chen Y, Tian B. Genomic and genetic advances of oiltea-camellia ( Camellia oleifera). FRONTIERS IN PLANT SCIENCE 2023; 14:1101766. [PMID: 37077639 PMCID: PMC10106683 DOI: 10.3389/fpls.2023.1101766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 03/22/2023] [Indexed: 05/03/2023]
Abstract
Oiltea-camellia (C. oleifera) is a widely cultivated woody oil crop in Southern China and Southeast Asia. The genome of oiltea-camellia was very complex and not well explored. Recently, genomes of three oiltea-camellia species were sequenced and assembled, multi-omic studies of oiltea-camellia were carried out and provided a better understanding of this important woody oil crop. In this review, we summarized the recent assembly of the reference genomes of oiltea-camellia, genes related to economic traits (flowering, photosynthesis, yield and oil component), disease resistance (anthracnose) and environmental stress tolerances (drought, cold, heat and nutrient deficiency). We also discussed future directions of integrating multiple omics for evaluating genetic resources and mining key genes of important traits, and the application of new molecular breeding and gene editing technologies to accelerate the breeding process of oiltea-camellia.
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Affiliation(s)
- Changrong Ye
- Academy of Innovation and Research, Huazhi Biotechnology Co. Ltd., Changsha, China
| | - Zhilong He
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
| | - Jiayu Peng
- Academy of Innovation and Research, Huazhi Biotechnology Co. Ltd., Changsha, China
| | - Rui Wang
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
| | - Xiangnan Wang
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
| | - Mengjiao Fu
- Department of Research and Development, Mountain Yuelu Breeding Innovation Center, Changsha, China
| | - Ying Zhang
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
| | - Ai Wang
- Department of Research and Development, Mountain Yuelu Breeding Innovation Center, Changsha, China
| | - Zhixian Liu
- Department of Research and Development, Mountain Yuelu Breeding Innovation Center, Changsha, China
| | - Gaofeng Jia
- Academy of Innovation and Research, Huazhi Biotechnology Co. Ltd., Changsha, China
- Department of Research and Development, Mountain Yuelu Breeding Innovation Center, Changsha, China
- *Correspondence: Gaofeng Jia, ; Yongzhong Chen, ; Bingchuan Tian,
| | - Yongzhong Chen
- Research Institute of Oil Tea Camellia, Hunan Academy of Forestry, Changsha, China
- *Correspondence: Gaofeng Jia, ; Yongzhong Chen, ; Bingchuan Tian,
| | - Bingchuan Tian
- Academy of Innovation and Research, Huazhi Biotechnology Co. Ltd., Changsha, China
- Department of Research and Development, Mountain Yuelu Breeding Innovation Center, Changsha, China
- *Correspondence: Gaofeng Jia, ; Yongzhong Chen, ; Bingchuan Tian,
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13
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Zhu X, Shen D, Wang R, Zheng Y, Su S, Chen F. Maturity Grading and Identification of Camellia oleifera Fruit Based on Unsupervised Image Clustering. Foods 2022; 11:foods11233800. [PMID: 36496609 PMCID: PMC9736105 DOI: 10.3390/foods11233800] [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: 10/11/2022] [Revised: 11/19/2022] [Accepted: 11/23/2022] [Indexed: 11/27/2022] Open
Abstract
Maturity grading and identification of Camellia oleifera are prerequisites to determining proper harvest maturity windows and safeguarding the yield and quality of Camellia oil. One problem in Camellia oleifera production and research is the worldwide confusion regarding the grading and identification of Camellia oleifera fruit maturity. To solve this problem, a Camellia oleifera fruit maturity grading and identification model based on the unsupervised image clustering model DeepCluster has been developed in the current study. The proposed model includes the following two branches: a maturity grading branch and a maturity identification branch. The proposed model jointly learns the parameters of the maturity grading branch and maturity identification branch and used the maturity clustering assigned from the maturity grading branch as pseudo-labels to update the parameters of the maturity identification branch. The maturity grading experiment was conducted using a training set consisting of 160 Camellia oleifera fruit samples and 2628 Camellia oleifera fruit digital images collected using a smartphone. The proposed model for grading Camellia oleifera fruit samples and images in training set into the following three maturity levels: unripe (47 samples and 883 images), ripe (62 samples and 1005 images), and overripe (51 samples and 740 images). Results suggest that there was a significant difference among the maturity stages graded by the proposed method with respect to seed oil content, seed soluble protein content, seed soluble sugar content, seed starch content, dry seed weight, and moisture content. The maturity identification experiment was conducted using a testing set consisting of 160 Camellia oleifera fruit digital images (50 unripe, 60 ripe, and 50 overripe) collected using a smartphone. According to the results, the overall accuracy of maturity identification for Camellia oleifera fruit was 91.25%. Moreover, a Gradient-weighted Class Activation Mapping (Grad-CAM) visualization analysis reveals that the peel regions, crack regions, and seed regions were the critical regions for Camellia oleifera fruit maturity identification. Our results corroborate a maturity grading and identification application of unsupervised image clustering techniques and are supported by additional physical and quality properties of maturity. The current findings may facilitate the harvesting process of Camellia oleifera fruits, which is especially critical for the improvement of Camellia oil production and quality.
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Affiliation(s)
- Xueyan Zhu
- School of Technology, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
| | - Deyu Shen
- School of Technology, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
| | - Ruipeng Wang
- School of Technology, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
| | - Yili Zheng
- School of Technology, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
| | - Shuchai Su
- Key Laboratory of Silviculture and Conversation, Ministry of Education, Beijing Forestry University, Beijing 100083, China
| | - Fengjun Chen
- School of Technology, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Correspondence:
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14
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Long W, Huang G, Yao X, Lv L, Yu C, Wang K. Untargeted metabolism approach reveals difference of varieties of bud and relation among characteristics of grafting seedlings in Camellia oleifera. FRONTIERS IN PLANT SCIENCE 2022; 13:1024353. [PMID: 36479510 PMCID: PMC9720148 DOI: 10.3389/fpls.2022.1024353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 10/24/2022] [Indexed: 06/17/2023]
Abstract
Camellia oleifera is one of the essential wood oil trees in the world. C.oleifera was propagated by nurse seedling grafting. Since the scion of C.oleifera had a significant regulated effect on the properties of rootstock after grafting and impacted on the growth of the grafted seedlings, it was necessary to understand the characteristics of buds among varieties to cultivate high-quality grafted seedlings. The metabolome was thought to be a powerful tool for understanding connecting phenotype-genotype interactions, which has an important impact on plant growth and development. In this study, UPLC-MS was used to determine the metabolites of the apical buds of CL3, CL4, CL40, and CL53 spring shoots after 30 days of sprout and to measure the growth characteristics of roots and stems after grafting. Metabolomics analysis revealed 554 kinds of metabolites were significant differences among four varieties, and 29 metabolic pathways were identified to have significant changes (p< 0.05), including carboxylic acids and derivatives, fatty Acyls, organooxygen compounds, and prenol lipids metabolites. The metabolites appeared in all varieties, including phenethyl rutinoside in glycosyl compounds and hovenidulcioside A1 in terpene glycosides. Metabolite-metabolite correlations in varieties revealed more complex patterns in relation to bud and enabled the recognition of key metabolites (e.g., Glutamate, (±)Catechin, GA52, ABA, and cs-Zeatin) affecting grafting and growth ability. Each variety has a unique metabolite type and correlation network relationship. Differentiated metabolites showed different growth trends for development after grafting. Many metabolites regulate the growth of scions in buds before grafting, which plays a crucial role in the growth of seedlings after grafting. It not only regulates the growth of roots but also affects the development of this stem. Finally, those results were associated with the genetic background of each cultivar, showing that metabolites could be potentially used as indicators for the genetic background, indicating that metabolites could potentially be used as indicators for seedling growth characteristics. Together, this study will enrich the theoretical basis of seedling growth and lay a foundation for further research on the molecular regulation mechanism interaction between rootstock and scion, rootstock growth, and the development of grafted seedlings after grafting.
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Affiliation(s)
- Wei Long
- Zhejiang Provincial Key Laboratory of Tree Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang, China
| | - Guangyuan Huang
- Chang Country Oil Tea Industry Development Center, Changshan Country Bureau of Forestry & Water Resoures, Changshan, Zhejiang, China
| | - Xiaohua Yao
- Zhejiang Provincial Key Laboratory of Tree Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang, China
| | - Leyan Lv
- College of Hydraulic Engineering, Zhejiang Tongji Vocational College of Science and Technology, Hangzhou, Zhejiang, China
| | - Chunlian Yu
- Chang Country Oil Tea Industry Development Center, Changshan Country Bureau of Forestry & Water Resoures, Changshan, Zhejiang, China
| | - Kailiang Wang
- Zhejiang Provincial Key Laboratory of Tree Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang, China
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15
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Microsatellite analysis and polymorphic marker development based on the full-length transcriptome of Camellia chekiangoleosa. Sci Rep 2022; 12:18906. [PMID: 36344600 PMCID: PMC9640616 DOI: 10.1038/s41598-022-23333-3] [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: 01/06/2022] [Accepted: 10/29/2022] [Indexed: 11/09/2022] Open
Abstract
Camellia chekiangoleosa is a popular variety of Oil-camellia that has high oil production and ornamental value. Microsatellite (SSR) markers are the preferred tool for the molecular marker-assisted breeding of C. chekiangoleosa. By focusing on the problems of the low development efficiency of polymorphic SSR markers and the lack of available functional markers in Oil-camellia, we identified 97,510 SSR loci based on the full-length transcriptome sequence of C. chekiangoleosa. An analysis of SSR characteristics showed that mononucleotide (51.29%) and dinucleotide (34.36%) SSRs were the main repeat types. The main SSR distribution areas based on proportion covered were ordered as follows: 5'UTR > 3'UTR > CDS. By comparing our data with those in databases such as GO and KEGG, we obtained functional annotations of unigene sequences containing SSR sites. The data showed that the amplification efficiency of the SSR primers was 51.72%, and the development efficiency of polymorphic SSR primers was 26.72%. Experiments verified that dinucleotide and pentanucleotide SSRs located in UTR regions could produce more polymorphic markers. An investigation into the genetic diversity of several C. chekiangoleosa populations also suggested that the developed SSR markers had higher levels of polymorphism. This study will provide a reference and high-quality markers for the large-scale development of functional SSR markers and genetic research in Oil-camellia.
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Liu Y, Geng Y, Zhang S, Hu B, Wang J, He J. Quantitative analysis and screening for key genes related to tea saponin in Camellia Oleifera Abel. Seeds. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Fu Y, Huo K, Pei X, Liang C, Meng X, Song X, Wang J, Niu J. Full-length transcriptome revealed the accumulation of polyunsaturated fatty acids in developing seeds of Plukenetia volubilis. PeerJ 2022; 10:e13998. [PMID: 36157055 PMCID: PMC9504451 DOI: 10.7717/peerj.13998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 08/12/2022] [Indexed: 01/19/2023] Open
Abstract
Background Plukenetia volubilis is cultivated as a valuable oilseed crop, and its mature seeds are rich in polyunsaturated fatty acids (FAs), which are widely used in food and pharmaceutical industries. Recently, next-generation sequencing (NGS) transcriptome studies in P. volubilis indicated that some candidate genes were involved in oil biosynthesis. The NGS were inaccuracies in assembly of some candidate genes, leading to unknown errors in date analyses. However, single molecular real-time (SMRT) sequencing can overcome these assembled errors. Unfortunately, this technique has not been reported in P. volubilis. Methods The total oil content of P. volubilis seed (PVS) was determined using Soxhlet extraction system. The FA composition were analyzed by gas chromatography. Combining PacBio SMRT and Illumina technologies, the transcriptome analysis of developing PVS was performed. Functional annotation and differential expression were performed by BLAST software (version 2.2.26) and RSEM software (version 1.2.31), respectively. The lncRNA-targeted transcripts were predicted in developing PVS using LncTar tool. Results By Soxhlet extraction system, the oil content of superior plant-type (SPT) was 13.47% higher than that of inferior plant-type (IPT) at mature PVS. The most abundant FAs were C18:2 and C18:3, among which C18:3 content of SPT was 1.11-fold higher than that of IPT. Combined with PacBio and Illumina platform, 68,971 non-redundant genes were obtained, among which 7,823 long non-coding RNAs (lncRNAs) and 7,798 lncRNA-targeted genes were predicted. In developing seed, the expressions of 57 TFs showed a significantly positive correlation with oil contents, including WRI1-like1, LEC1-like1, and MYB44-like. Comparative analysis of expression profiles between SPT and IPT implied that orthologs of FAD3, PDCT, PDAT, and DAGT2 were possibly important for the accumulation of polyunsaturated FAs. Together, these results provide a reference for oil biosynthesis of P. volubilis and genetic improvement of oil plants.
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Affiliation(s)
- Yijun Fu
- College of Forestry, Hainan University, Haikou, Hainan, China
| | - Kaisen Huo
- College of Forestry, Hainan University, Haikou, Hainan, China
| | - Xingjie Pei
- College of Forestry, Hainan University, Haikou, Hainan, China
| | - Chongjun Liang
- College of Forestry, Hainan University, Haikou, Hainan, China
| | - Xinya Meng
- College of Forestry, Hainan University, Haikou, Hainan, China
| | - Xiqiang Song
- College of Forestry, Hainan University, Haikou, Hainan, China
| | - Jia Wang
- College of Forestry, Hainan University, Haikou, Hainan, China
| | - Jun Niu
- College of Forestry, Hainan University, Haikou, Hainan, China
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18
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The CfSnt2-Dependent Deacetylation of Histone H3 Mediates Autophagy and Pathogenicity of Colletotrichum fructicola. J Fungi (Basel) 2022; 8:jof8090974. [PMID: 36135699 PMCID: PMC9506038 DOI: 10.3390/jof8090974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 12/12/2022] Open
Abstract
Camellia oleifera is one of the most valuable woody edible-oil crops, and anthracnose seriously afflicts its yield and quality. We recently showed that the CfSnt2 regulates the pathogenicity of Colletotrichum fructicola, the dominant causal agent of anthracnose on C. oleifera. However, the molecular mechanisms of CfSnt2-mediated pathogenesis remain largely unknown. Here, we found that CfSnt2 is localized to the nucleus to regulate the deacetylation of histone H3. The further transcriptomic analysis revealed that CfSnt2 mediates the expression of global genes, including most autophagy-related genes. Furthermore, we provided evidence showing that CfSnt2 negatively regulates autophagy and is involved in the responses to host-derived ROS and ER stresses. These combined functions contribute to the pivotal roles of CfSnt2 on pathogenicity. Taken together, our studies not only illustrate how CfSnt2 functions in the nucleus, but also link its roles on the autophagy and responses to host-derived stresses with pathogenicity in C. fructicola.
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Li X, Cai K, Zhang Q, Pei X, Chen S, Jiang L, Han Z, Zhao M, Li Y, Zhang X, Li Y, Zhang S, Chen S, Qu G, Tigabu M, Chiang VL, Sederoff R, Zhao X. The Manchurian Walnut Genome: Insights into Juglone and Lipid Biosynthesis. Gigascience 2022; 11:6619298. [PMID: 35764602 PMCID: PMC9239856 DOI: 10.1093/gigascience/giac057] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 03/20/2022] [Accepted: 05/24/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Manchurian walnut (Juglans mandshurica Maxim.) is a tree with multiple industrial uses and medicinal properties in the Juglandaceae family (walnuts and hickories). J. mandshurica produces juglone, which is a toxic allelopathic agent and has potential utilization value. Furthermore, the seed of J. mandshurica is rich in various unsaturated fatty acids and has high nutritive value. FINDINGS Here, we present a high-quality chromosome-scale reference genome assembly and annotation for J. mandshurica (n = 16) with a contig N50 of 21.4 Mb by combining PacBio high-fidelity reads with high-throughput chromosome conformation capture data. The assembled genome has an estimated sequence size of 548.7 Mb and consists of 657 contigs, 623 scaffolds, and 40,453 protein-coding genes. In total, 60.99% of the assembled genome consists of repetitive sequences. Sixteen super-scaffolds corresponding to the 16 chromosomes were assembled, with a scaffold N50 length of 33.7 Mb and a BUSCO complete gene percentage of 98.3%. J. mandshurica displays a close sequence relationship with Juglans cathayensis, with a divergence time of 13.8 million years ago. Combining the high-quality genome, transcriptome, and metabolomics data, we constructed a gene-to-metabolite network and identified 566 core and conserved differentially expressed genes, which may be involved in juglone biosynthesis. Five CYP450 genes were found that may contribute to juglone accumulation. NAC, bZip, NF-YA, and NF-YC are positively correlated with the juglone content. Some candidate regulators (e.g., FUS3, ABI3, LEC2, and WRI1 transcription factors) involved in the regulation of lipid biosynthesis were also identified. CONCLUSIONS Our genomic data provide new insights into the evolution of the walnut genome and create a new platform for accelerating molecular breeding and improving the comprehensive utilization of these economically important tree species.
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Affiliation(s)
| | | | | | | | - Song Chen
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Luping Jiang
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Zhiming Han
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Minghui Zhao
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Yan Li
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Xinxin Zhang
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Yuxi Li
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Shikai Zhang
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Su Chen
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Guanzheng Qu
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Mulualem Tigabu
- Southern Swedish Forest Research Center, Faculty of Forest Science, Swedish University of Agricultural Sciences, Lomma SE-234 22, Sweden
| | - Vincent L Chiang
- State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040, China
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA
| | - Ronald Sederoff
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA
| | - Xiyang Zhao
- Correspondence address. Xiyang Zhao, E-mail:
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Wang L, Zhang C, Yin W, Wei W, Wang Y, Sa W, Liang J. Single-molecule real-time sequencing of the full-length transcriptome of purple garlic (Allium sativum L. cv. Leduzipi) and identification of serine O-acetyltransferase family proteins involved in cysteine biosynthesis. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2864-2873. [PMID: 34741310 DOI: 10.1002/jsfa.11627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 10/25/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Garlic (Allium sativum L.), whose bioactive components are mainly organosulfur compounds (OSCs), is a herbaceous perennial widely consumed as a green vegetable and a condiment. Yet, the metabolic enzymes involved in the biosynthesis of OSCs are not identified in garlic. RESULTS Here, a full-length transcriptome of purple garlic was generated via PacBio and Illumina sequencing, to characterize the garlic transcriptome and identify key proteins mediating the biosynthesis of OSCs. Overall, 22.56 Gb of clean data were generated, resulting in 454 698 circular consensus sequence (CCS) reads, of which 83.4% (379 206) were identified as being full-length non-chimeric reads - their further transcript clustering facilitated identification of 36 571 high-quality consensus reads. Once corrected, their genome-wide mapping revealed that 6140 reads were novel isoforms of known genes, and 2186 reads were novel isoforms from novel genes. We detected 1677 alternative splicing events, finding 2902 genes possessing either two or more poly(A) sites. Given the importance of serine O-acetyltransferase (SERAT) in cysteine biosynthesis, we investigated the five SERAT homologs in garlic. Phylogenetic analysis revealed a three-tier classification of SERAT proteins, each featuring a serine acetyltransferase domain (N-terminal) and one or two hexapeptide transferase motifs. Template-based modeling showed that garlic SERATs shared a common homo-trimeric structure with homologs from bacteria and other plants. The residues responsible for substrate recognition and catalysis were highly conserved, implying a similar reaction mechanism. In profiling the five SERAT genes' transcript levels, their expression pattern varied significantly among different tissues. CONCLUSION This study's findings deepen our knowledge of SERAT proteins, and provide timely genetic resources that could advance future exploration into garlic's genetic improvement and breeding. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Le Wang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- Qinghai Academy of Agricultural Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, College of Agriculture and Forestry Sciences, Qinghai University, Xining, China
| | - Chao Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- Qinghai Academy of Agricultural Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, College of Agriculture and Forestry Sciences, Qinghai University, Xining, China
| | - Wei Yin
- Qinghai Academy of Agricultural Forestry Sciences, Qinghai University, Xining, China
| | - Wei Wei
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- Qinghai Academy of Agricultural Forestry Sciences, Qinghai University, Xining, China
| | - Yonghong Wang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Wei Sa
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Jian Liang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- Qinghai Academy of Agricultural Forestry Sciences, Qinghai University, Xining, China
- Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, College of Agriculture and Forestry Sciences, Qinghai University, Xining, China
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Li H, Teng K, Yue Y, Teng W, Zhang H, Wen H, Wu J, Fan X. Seed Germination Mechanism of Carex rigescens Under Variable Temperature Determinded Using Integrated Single-Molecule Long-Read and Illumina Sequence Analysis. FRONTIERS IN PLANT SCIENCE 2022; 13:818458. [PMID: 35310626 PMCID: PMC8928477 DOI: 10.3389/fpls.2022.818458] [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: 11/19/2021] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
The turfgrass species Carex rigescens has broad development and utilization prospects in landscaping construction. However, seed dormancy and a low germination rate have inhibited its application. Furthermore, the molecular mechanisms of seed germination in C. rigescens have not been thoroughly studied. Therefore, in the present study, PacBio full-length transcriptome sequencing combined with Illumina sequencing was employed to elucidate the germination mechanism of C. rigescens seeds under variable temperatures. In general, 156,750 full-length non-chimeric sequences, including those for 62,086 high-quality transcripts, were obtained using single-molecule long read sequencing. In total, 40,810 high-quality non-redundant, 1,675 alternative splicing, 28,393 putative coding sequences, and 1,052 long non-coding RNAs were generated. Based on the newly constructed full-length reference transcriptome, 23,147 differentially expressed genes were identified. We screened four hub genes participating in seed germination using weighted gene co-expression network analysis. Combining these results with the physiological observations, the important roles of sucrose and starch metabolic pathways in germination are further discussed. In conclusion, we report the first full-length transcriptome of C. rigescens, and investigated the physiological and transcriptional mechanisms of seed germination under variable temperatures. Our results provide valuable information for future transcriptional analyses and gene function studies of C. rigescens.
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Affiliation(s)
| | | | | | | | | | | | - Juying Wu
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Xifeng Fan
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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22
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Ji K, Song Q, Yu X, Tan C, Wang L, Chen L, Xiang X, Gong W, Yuan D. Hormone analysis and candidate genes identification associated with seed size in Camellia oleifera. ROYAL SOCIETY OPEN SCIENCE 2022; 9:211138. [PMID: 35360359 PMCID: PMC8965419 DOI: 10.1098/rsos.211138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 03/02/2022] [Indexed: 05/02/2023]
Abstract
Camellia oleifera is an important woody oil species in China. Its seed oil has been widely used as a cooking oil. Seed size is a crucial factor influencing the yield of seed oil. In this study, the horizontal diameter, vertical diameter and volume of C. oleifera seeds showed a rapid growth tendency from 235 days after pollination (DAP) to 258 DAP but had a slight increase at seed maturity. During seed development, the expression of genes related to cell proliferation and expansion differ greatly. Auxin plays an important role in C. oleifera seeds; YUC4 and IAA17 were significantly downregulated. Weighted gene co-expression network analysis screened 21 hub transcription factors for C. oleifera seed horizontal diameter, vertical diameter and volume. Among them, SPL4 was significantly decreased and associated with all these three traits, while ABI4 and YAB1 were significantly increased and associated with horizontal diameter of C. oleifera seeds. Additionally, KLU significantly decreased (2040-fold). Collectively, our data advances the knowledge of factors related to seed size and provides a theoretical basis for improving the yield of C. oleifera seeds.
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Affiliation(s)
- Ke Ji
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
| | - Qiling Song
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
| | - Xinran Yu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
| | - Chuanbo Tan
- Hunan Great Sanxiang Camellia Oil Co., Ltd, Hengyang, Hunan 421000, People's Republic of China
| | - Linkai Wang
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
| | - Le Chen
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
| | - Xiaofeng Xiang
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
| | - Wenfang Gong
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
| | - Deyi Yuan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education and the Key Laboratory of Non-Wood Forest Products of Forestry Ministry, Central South University of Forestry and Technology, Changsha, Hunan, 410004, People's Republic of China
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Wang Z, Huang B, Ye J, He Y, Tang S, Wang H, Wen Q. Comparative transcriptomic analysis reveals genes related to the rapid accumulation of oleic acid in Camellia chekiangoleosa, an oil tea plant with early maturity and large fruit. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 171:95-104. [PMID: 34974387 DOI: 10.1016/j.plaphy.2021.12.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
Camellia chekiangoleosa has a higher oleic acid content and a shorter reproductive cycle than typical oil tea plants. It was intensively sampled over six C. chekiangoleosa seed development stages. The content of fatty acids determined by GC showed that the accumulation of fatty acids gradually increased from the S1 to S5 stages, and the maximum concentration was reached in S5. Then, fatty acids declined slightly in S6. The main fatty acid component showed the same accumulation trend as the total fatty acids, except linolenic acid, which remained at a low level throughout seed developmental stages. Changes in the expression of fatty acid accumulation-related genes were monitored using second-generation and SMRT full-length transcriptome sequencing. Finally, 18.92 G accurate and reliable data were obtained. Differential expression analysis and weighted coexpression analysis revealed two "gene modules" significantly associated with oleic acid and linoleic acid contents, and the high expression of ENR, KAS I, and KAS II, which accumulate substrates for oleic acid synthesis, was thought to be responsible for the rapid accumulation of fatty acids in the early stage. The rapid increase in fatty acids in the second stage may be closely related to the synergy between the high expression of SAD and low expression of FAD2. In addition, many transcription factors, such as ERF, GRAS, GRF, MADS, MYB and WRKY, may be involved in the fatty acid synthesis. Our data provide a rich resource for further studies on the regulation of fatty acid synthesis in C. chekiangoleosa.
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Affiliation(s)
- Zhongwei Wang
- Key Laboratory of Plant Biotechnology, Jiangxi Academy of Forestry, Nanchang, 330032, China; Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China.
| | - Bin Huang
- Key Laboratory of Plant Biotechnology, Jiangxi Academy of Forestry, Nanchang, 330032, China.
| | - Jinshan Ye
- Key Laboratory of Plant Biotechnology, Jiangxi Academy of Forestry, Nanchang, 330032, China.
| | - Yichang He
- Key Laboratory of Plant Biotechnology, Jiangxi Academy of Forestry, Nanchang, 330032, China.
| | - Shijie Tang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China.
| | - Huanli Wang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China.
| | - Qiang Wen
- Key Laboratory of Plant Biotechnology, Jiangxi Academy of Forestry, Nanchang, 330032, China.
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Lin P, Wang K, Wang Y, Hu Z, Yan C, Huang H, Ma X, Cao Y, Long W, Liu W, Li X, Fan Z, Li J, Ye N, Ren H, Yao X, Yin H. The genome of oil-Camellia and population genomics analysis provide insights into seed oil domestication. Genome Biol 2022; 23:14. [PMID: 35012630 PMCID: PMC8744323 DOI: 10.1186/s13059-021-02599-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 12/31/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND As a perennial crop, oil-Camellia possesses a long domestication history and produces high-quality seed oil that is beneficial to human health. Camellia oleifera Abel. is a sister species to the tea plant, which is extensively cultivated for edible oil production. However, the molecular mechanism of the domestication of oil-Camellia is still limited due to the lack of sufficient genomic information. RESULTS To elucidate the genetic and genomic basis of evolution and domestication, here we report a chromosome-scale reference genome of wild oil-Camellia (2.95 Gb), together with transcriptome sequencing data of 221 cultivars. The oil-Camellia genome, assembled by an integrative approach of multiple sequencing technologies, consists of a large proportion of repetitive elements (76.1%) and high heterozygosity (2.52%). We construct a genetic map of high-density corrected markers by sequencing the controlled-pollination hybrids. Genome-wide association studies reveal a subset of artificially selected genes that are involved in the oil biosynthesis and phytohormone pathways. Particularly, we identify the elite alleles of genes encoding sugar-dependent triacylglycerol lipase 1, β-ketoacyl-acyl carrier protein synthase III, and stearoyl-acyl carrier protein desaturases; these alleles play important roles in enhancing the yield and quality of seed oil during oil-Camellia domestication. CONCLUSIONS We generate a chromosome-scale reference genome for oil-Camellia plants and demonstrate that the artificial selection of elite alleles of genes involved in oil biosynthesis contributes to oil-Camellia domestication.
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Affiliation(s)
- Ping Lin
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Kailiang Wang
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Yupeng Wang
- College of Information Science and Technology, Nanjing Forestry University, Nanjing, 210037, China
| | - Zhikang Hu
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Chao Yan
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Hu Huang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Xianjin Ma
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Yongqing Cao
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Wei Long
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Weixin Liu
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Xinlei Li
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Zhengqi Fan
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Jiyuan Li
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Ning Ye
- College of Information Science and Technology, Nanjing Forestry University, Nanjing, 210037, China
| | - Huadong Ren
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China
| | - Xiaohua Yao
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China.
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China.
| | - Hengfu Yin
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China.
- Key Laboratory of Forest Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, 311400, Hangzhou, China.
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Transcriptomic Analysis Reveals Key Genes Involved in Oil and Linoleic Acid Biosynthesis during Artemisia sphaerocephala Seed Development. Int J Mol Sci 2021; 22:ijms22168369. [PMID: 34445076 PMCID: PMC8395072 DOI: 10.3390/ijms22168369] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 01/24/2023] Open
Abstract
Artemisia sphaerocephala seeds are rich in polysaccharides and linoleic acid (C18:2), which have been widely used as traditional medicine and to improve food quality. The accumulation patterns and molecular regulatory mechanisms of polysaccharides during A. sphaerocephala seed development have been studied. However, the related research on seed oil and C18:2 remain unclear. For this study, A. sphaerocephala seeds at seven different development stages at 10, 20, 30, 40, 50, 60, and 70 days after flowering (designated as S1~S7), respectively, were employed as experimental samples, the accumulation patterns of oil and fatty acids (FA) and the underlying molecular regulatory mechanisms were analyzed. The results revealed that oil content increased from 10.1% to 20.0% in the early stages of seed development (S1~S2), and up to 32.0% in mature seeds, of which C18:2 accounted for 80.6% of the total FA. FA and triacylglycerol biosynthesis-related genes jointly involved in the rapid accumulation of oil in S1~S2. Weighted gene co-expression network analysis showed that transcription factors FUS3 and bHLH played a critical role in the seed oil biosynthesis. The perfect harmonization of the high expression of FAD2 with the extremely low expression of FAD3 regulated the accumulation of C18:2. This study uncovered the gene involved in oil biosynthesis and molecular regulatory mechanisms of high C18:2 accumulation in A. sphaerocephala seeds; thus, advancing research into unsaturated fatty acid metabolism in plants while generating valuable genetic resources for optimal C18:2 breeding.
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Zhang F, Li Z, Zhou J, Gu Y, Tan X. Comparative study on fruit development and oil synthesis in two cultivars of Camellia oleifera. BMC PLANT BIOLOGY 2021; 21:348. [PMID: 34301189 PMCID: PMC8299657 DOI: 10.1186/s12870-021-03114-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The oil-tea tree (Camellia oleifera Abel.) is a woody tree species that produces edible oil in the seed. C. oleifera oil has high nutritional value and is also an important raw material for medicine and cosmetics. In China, due to the uncertainty on maturity period and oil synthesis mechanism of many C. oleifera cultivars, growers may harvest fruits prematurely, which could not maximize fruit and oil yields. In this study, our objective was to explore the mechanism and differences of oil synthesis between two Camellia oleifera cultivars for a precise definition of the fruit ripening period and the selection of appropriate cultivars. RESULTS The results showed that 'Huashuo' had smaller fruits and seeds, lower dry seed weight and lower expression levels of fatty acid biosynthesis genes in July. We could not detect the presence of oil and oil bodies in 'Huashuo' seeds until August, and oil and oil bodies were detected in 'Huajin' seeds in July. Moreover, 'Huashuo' seeds were not completely blackened in October with up to 60.38% of water and approximately 37.98% of oil in seed kernels whose oil content was much lower than normal mature seed kernels. The oil bodies in seed endosperm cells of 'Huajin' were always higher than those of 'Huashuo' from July to October. CONCLUSION Our results confirmed that C. oleifera 'Huashuo' fruits matured at a lower rate compared to 'Huajin' fruits and that 'Huajin' seeds entered the oil synthesis period earlier than 'Huashuo' seeds. Moreover, 'Huashuo' fruits did not mature during the Frost's Descent period (October 23-24 each year).
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Affiliation(s)
- Fanhang Zhang
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095 Jiangsu China
| | - Ze Li
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forestry Industry of Hunan Province, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
| | - Junqin Zhou
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forestry Industry of Hunan Province, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
| | - Yiyang Gu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forestry Industry of Hunan Province, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
| | - Xiaofeng Tan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
- Engineering Technology Research Center of Southern Hilly and Mountainous Ecological Non-Wood Forestry Industry of Hunan Province, Central South University of Forestry and Technology, Changsha, 410004 Hunan China
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