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Guan J, Zhu J, Liu H, Yang H, Zhong S, Chen W, Yi X, Chen C, Tan F, Shen J, Luo P. Arogenate dehydratase isoforms strategically deregulate phenylalanine biosynthesis in Akebia trifoliata. Int J Biol Macromol 2024; 271:132587. [PMID: 38788880 DOI: 10.1016/j.ijbiomac.2024.132587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 05/01/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
Arogenate dehydratase (ADT) is key for phenylalanine (Phe) biosynthesis in plants. To examine ADT components and function in Akebia trifoliata, a representative of Ranunculaceae, we first identified eight ADTs (AktADT1-8, encoding sequences varying from 1032 to 1962 bp) in the A. trifoliata reference genome and five proteins (AktADT1, AktADT4, AktADT7, AktADT8 and AktADT8s) with moonlighting prephenate dehydratase (PDT) activity and Km values varying from 0.43 to 2.17 mM. Structurally, two basic residue combinations (Val314/Ala317 and Ala314/Val317) in the PAC domain are essential for the moonlighting PDT activity of ADTs. Functionally, AktADT4 and AktADT8 successfully restored the wild-type phenotype of pha2, a knockout mutant of Saccharomyces cerevisiae. In addition, AktADTs are ubiquitously expressed, but their expression levels are tissue specific, and the half maximal inhibitory concentration (IC50) of Phe for AktADTs ranged from 49.81 to 331.17 μM. Both AktADT4 and AktADT8 and AktADT8s localized to chloroplast stromules and the cytosol, respectively, while the remaining AktADTs localized to the chloroplast stroma. These findings suggest that various strategies exist for regulating Phe biosynthesis in A. trifoliata. This provides a reasonable explanation for the high Phe content and insights for further genetic improvement of the edible fruits of A. trifoliata.
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Affiliation(s)
- Ju Guan
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China; Cuisine Science Key Laboratory of Sichuan Province, Sichuan Tourism University, Chengdu 611130, China
| | - Jun Zhu
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China
| | - Hao Liu
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China
| | - Hao Yang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China; Sichuan Akebia trifoliata Biotechnology Co., Ltd., Chengdu 611130, China
| | - Shengfu Zhong
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China
| | - Wei Chen
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China; Sichuan Akebia trifoliata Biotechnology Co., Ltd., Chengdu 611130, China
| | - Xiaoxiao Yi
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China
| | - Chen Chen
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China
| | - Feiquan Tan
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China
| | - Jinliang Shen
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China
| | - Peigao Luo
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Chengdu 611130, Sichuan, China.
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Dong Q, Zhang Y, Zhong S, Zhang Q, Yang H, Yang H, Yi X, Tan F, Chen C, Luo P. Conserved DNA sequence analysis reveals the phylogeography and evolutionary events of Akebia trifoliata in the region across the eastern edge of the Tibetan Plateau and subtropical China. BMC Ecol Evol 2024; 24:52. [PMID: 38654171 DOI: 10.1186/s12862-024-02243-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND The eastern edge of the Qinghai‒Tibet Plateau (QTP) and subtropical China have various regions where plant species originate and thrive, but these regions have been the focus of very few integrative studies. Here, we elucidated the phylogeographic structure of a continuous and widespread Akebia trifoliata population across these two regions. RESULTS Sixty-one populations consisting of 391 genotypes were examined to assess population diversity and structure via network distribution analysis, maximum likelihood phylogenetic tree reconstruction, divergence time estimation, demographic history inference, and ancestral area reconstruction of both conserved internal transcribed spacer (ITS) and chloroplast (rps16) DNA sequences. The results showed that the ITS region was more variable than the rps16 region and could be suitable for studying intraspecific phylogeography. The A. trifoliata population displayed high genetic diversity, genetic differentiation and obvious phylogeographical structure, possibly originating on the eastern QTP, expanding during the last glacial-interglacial cycle, diverging in the early Pleistocene and middle Pleistocene, and extensively migrating thereafter. The migration route from west to east along rivers could be largely responsible for the long-distance dispersal of this species, while three main refuges (Qinba Mountains, Nanling Mountains and Yunnan-Guizhou Plateau) with multiple ice shelters facilitated its wide distribution. CONCLUSIONS Our results suggested that the from west to east long migration accompanying with the minor short reciprocal migration in the south-north direction, and the three main refuges (the Qinba Mountains, Nanling Mountains and Yunnan-Guizhou Plateau) contributed to the extant geographical distribution of A. trifoliata. In addition, this finding also strongly reduced the discrepancy between glacial contraction and postglacial expansion and the in situ survival hypothesis by simultaneously considering the existence of many similar climate-related ecological niches and migration influences.
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Affiliation(s)
- Qing Dong
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Yongle Zhang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Shengfu Zhong
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Qiuyi Zhang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Hao Yang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Huai Yang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Xiaoxiao Yi
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Feiquan Tan
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Chen Chen
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Peigao Luo
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricultural University of Sichuan Province, Sichuan Agricultural University, Chengdu, China.
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Zou SY, Feng C, Gao PX, Li TJ, Jia TJ, Huang H. Germplasm resources and genetic improvement of Akebia: A new fruit crop in China. PLANT DIVERSITY 2023; 45:712-721. [PMID: 38197008 PMCID: PMC10772107 DOI: 10.1016/j.pld.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 01/11/2024]
Abstract
Akebia species, belonging to Lardizabalaceae, are widespread from subtropical to temperate environments of China, Japan, and Korea. All known Akebia species have medicinal and dietary value and have been widely cultivated as a new fruit crop in many areas of China. However, compared with other crop species, the breeding improvement and commercial cultivation of Akebia remain in their infancy. This review systematically introduces the present germplasm resources, geographical distribution, biological characteristics, interspecific and intraspecific cross compatibility, molecular biology, and breeding progress in Akebia species. Akebia plants are widely distributed in Shanxi, Henan, Sichuan, Chongqing, Hunan, Hubei, Jiangxi, Zhejiang, and Fujian provinces of China, and wild Akebia plants exhibit abundant phenotypic and genetic diversity due to their wide range of geographical distribution and high adaptability in different habitats. Interspecific artificial hybridization experiments have been conducted in our Akebia germplasm resources nursery. The results showed that there was no reproductive isolation between Akebia species, and fertile progeny could be produced. The synthesis of knowledge on these species provides insights for the rational development and utilization of these germplasm resources, and can facilitate the development of new breeding lines or varieties for commercial cultivation or production. Finally, perspectives on Akebia breeding research are discussed and conclusions are provided. This review provided breeders with new insights into Akebia domestication and breeding, and we also proposed five basic steps in the domestication of new fruit crops.
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Affiliation(s)
- Shuai-Yu Zou
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China
| | - Chen Feng
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China
| | - Pu-Xin Gao
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China
| | - Tong-Jian Li
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Tian-Jiao Jia
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China
| | - Hongwen Huang
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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Genome-Wide Identification of Superoxide Dismutase and Expression in Response to Fruit Development and Biological Stress in Akebia trifoliata: A Bioinformatics Study. Antioxidants (Basel) 2023; 12:antiox12030726. [PMID: 36978974 PMCID: PMC10045841 DOI: 10.3390/antiox12030726] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/07/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
Akebia trifoliata is a newly domesticated perennial fruit tree, and the lack of molecular research on stress resistance seriously affects its genetic improvement and commercial value development. Superoxide dismutase (SOD) can effectively eliminate the accumulation of reactive oxygen species (ROS) during the rapid growth of plant organs under biotic and abiotic stresses, maintaining a steady state of physiological metabolism. In this study, 13 SODs consisting of two FeSODs (FSDs), four MnSODs (MSDs) and seven Cu/ZnSODs (CSDs) were identified in the A. trifoliata genome. Structurally, the phylogeny, intron–exon pattern and motif sequences within these three subfamilies show high conservation. Evolutionarily, segmental/wide genome duplication (WGD) and dispersed duplication form the current SOD profile of A. trifoliata. Weighted gene coexpression network analysis (WGCNA) revealed the metabolic pathways of nine (69.2%) SODs involved in fruit development, among which AktMSD4 regulates fruit development and AktCSD4 participates in the stress response. In addition, under the stress of multiple pathogens, six (46.6%) SODs were continuously upregulated in the rinds of resistant lines; of these, three SODs (AktMSD1, AktMSD2 and AktMSD3) were weakly or not expressed in susceptible lines. The results pave the way for theoretical research on SODs and afford the opportunity for genetic improvement of A. trifoliata.
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Zhang Q, Zhong S, Dong Q, Yang H, Yang H, Tan F, Chen C, Ren T, Shen J, Cao G, Luo P. Identification of Photoperiod- and Phytohormone-Responsive DNA-Binding One Zinc Finger (Dof) Transcription Factors in Akebia trifoliata via Genome-Wide Expression Analysis. Int J Mol Sci 2023; 24:ijms24054973. [PMID: 36902404 PMCID: PMC10002981 DOI: 10.3390/ijms24054973] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 02/22/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
As a kind of plant-specific transcription factor (TF), DNA-Binding One Zinc Finger (Dof) is widely involved in the response to environmental change, and as an evolutionarily important perennial plant species, Akebia trifoliata is ideal for studying environmental adaptation. In this study, a total of 41 AktDofs were identified in the A. trifoliata genome. First, the characteristics, including the length, exon number, and chromosomal distribution of the AktDofs and the isoelectric point (PI), amino acid number, molecular weight (MW), and conserved motifs of their putative proteins, were reported. Second, we found that all AktDofs evolutionarily underwent strong purifying selection, and many (33, 80.5%) of them were generated by whole-genome duplication (WGD). Third, we outlined their expression profiles by the use of available transcriptomic data and RT-qPCR analysis. Finally, we identified four candidate genes (AktDof21, AktDof20, AktDof36, and AktDof17) and three other candidate genes (AktDof26, AktDof16, and AktDof12) that respond to long day (LD) and darkness, respectively, and that are closely associated with phytohormone-regulating pathways. Overall, this research is the first to identify and characterize the AktDofs family and is very helpful for further research on A. trifoliata adaptation to environmental factors, especially photoperiod changes.
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Affiliation(s)
- Qiuyi Zhang
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Shengfu Zhong
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Qing Dong
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Hao Yang
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Huai Yang
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Feiquan Tan
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Chen Chen
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Tianheng Ren
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
| | - Jinliang Shen
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Guoxing Cao
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Peigao Luo
- Key Laboratory of Plant Genetics and Breeding, Sichuan Agricultural University of Sichuan Province, Chengdu 611130, China
- Correspondence:
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Zhong S, Li B, Chen W, Wang L, Guan J, Wang Q, Yang Z, Yang H, Wang X, Yu X, Fu P, Liu H, Chen C, Tan F, Ren T, Shen J, Luo P. The chromosome-level genome of Akebia trifoliata as an important resource to study plant evolution and environmental adaptation in the Cretaceous. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 112:1316-1330. [PMID: 36305286 DOI: 10.1111/tpj.16011] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
The environmental adaptation of eudicots is the most reasonable explanation for why they compose the largest clade of modern plants (>70% of angiosperms), which indicates that the basal eudicots would be valuable and helpful to study their survival and ability to thrive throughout evolutionary processes. Here, we detected two whole-genome duplication (WGD) events in the high-quality assembled Akebia trifoliata genome (652.73 Mb) with 24 138 protein-coding genes based on the evidence of intragenomic and intergenomic collinearity, synonymous substitution rate (KS ) values and polyploidization and diploidization traces; these events putatively occurred at 85.15 and 146.43 million years ago (Mya). The integrated analysis of 16 species consisting of eight basal and eight core eudicots further revealed that there was a putative ancient WGD at the early stage of eudicots (temporarily designated θ) at 142.72 Mya, similar to the older WGD of Akebia trifoliata, and a putative core eudicot-specific WGD (temporarily designated ω). Functional enrichment analysis of retained duplicate genes following the θ event is suggestive of adaptation to the extreme environment change in both the carbon dioxide concentration and desiccation around the Jurassic-Cretaceous boundary, while the retained duplicate genes following the ω event is suggestive of adaptation to the extreme droughts, possibly leading to the rapid spread of eudicots in the mid-Cretaceous. Collectively, the A. trifoliata genome experienced two WGD events, and the older event may have occurred at the early stage of eudicots, which likely increased plant environmental adaptability and helped them survive in ancient extreme environments.
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Affiliation(s)
- Shengfu Zhong
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, 2 Yuanmingyuan West Road in Haidian District, 100193, Beijing, China
- Institute of Ecological Agriculture, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Bin Li
- State Key Laboratory of Tree Breeding and Forest Genetics, Research Institute of Forestry, Chinese Academy of Forestry, 1 Dongxiaofu Xiangshan Road in Haidian District, 100091, Beijing, China
| | - Wei Chen
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Lili Wang
- Biomarker Technologies Co., Ltd, 12 Fuqian Street in Shunyi District, 101300, Beijing, China
| | - Ju Guan
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Qiang Wang
- Institute of Ecological Agriculture, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Zujun Yang
- Center for Information in Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, 2006 Xiyuan Avenue in West Hi-Tech Zone, 611731, Chengdu, Sichuan Province, China
| | - Hao Yang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Xianshu Wang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Xiaojiao Yu
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Peng Fu
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Hongchang Liu
- Guizhou Key Laboratory for Propagation and Cultivation of Medicinal Plants, Guizhou University, 2708 Huaxi South Avenue in Huaxi District, 550025, Guiyang, Guizhou province, China
| | - Chen Chen
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Feiquan Tan
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
- Institute of Ecological Agriculture, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Tianheng Ren
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Jinliang Shen
- College of Forestry, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
| | - Peigao Luo
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, Sichuan Agricultural University, 211 Huimin Road in Wenjiang District, 611130, Chengdu, Sichuan Province, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, 2 Yuanmingyuan West Road in Haidian District, 100193, Beijing, China
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Zhong S, Guan J, Chen C, Tan F, Luo P. Multiomics analysis elucidated molecular mechanism of aromatic amino acid biosynthesis in Akebia trifoliata fruit. FRONTIERS IN PLANT SCIENCE 2022; 13:1039550. [PMID: 36426151 PMCID: PMC9680012 DOI: 10.3389/fpls.2022.1039550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Akebia trifoliata is a novel edible and healthy fruit. Here, we found that this fruit had the highest content of total free amino acids and three aromatic amino acids (AAAs) compared with the other popular fruits, and there was an obvious inverse relationship between AAA and flavonoid levels in various fruit tissues. Multiomics analysis revealed that the evolutionarily strengthened synthetic pathway of all three AAAs, the largely regulating ability conferred by ASP5 in the arogenate pathway and the complementary phenylpyruvate pathway endorsed by ADT of both Phe and Tyr biosynthesis provided reasonable explanations for the high AAA content in the flesh of A. trifoliata fruit. Gene-specific expression could be the main reason for the inverse relationship between AAAs and flavonoids. This study will help us understand the metabolic mechanism of AAAs and to develop A. trifoliata as a fresh fruit crop and medicinal plant by molecular breeding strategies.
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Zhong S, Yang H, Guan J, Shen J, Ren T, Li Z, Tan F, Li Q, Luo P. Characterization of the MADS-Box Gene Family in Akebia trifoliata and Their Evolutionary Events in Angiosperms. Genes (Basel) 2022; 13:genes13101777. [PMID: 36292662 PMCID: PMC9601569 DOI: 10.3390/genes13101777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
As the largest clade of modern plants, flower plants have evolved a wide variety of flowers and fruits. MADS-box genes play key roles in regulating plant morphogenesis, while basal eudicots have an evolutionarily important position of acting as an evolutionary bridge between basal angiosperms and core eudicots. Akebia trifoliata is an important member of the basal eudicot group. To study the early evolution of angiosperms, we identified and characterized the MADS-Box gene family on the whole-genome level of A. trifoliata. There were 47 MADS-box genes (13 type I and 34 type II genes) in the A. trifoliata genome; type I genes had a greater gene length and coefficient of variation and a smaller exon number than type II genes. A total of 27 (57.4%) experienced whole or segmental genome duplication and purifying selection. A transcriptome analysis suggested that three and eight genes were involved in whole fruit and seed development, respectively. The diversification and phylogenetic analysis of 1479 type II MADS-box genes of 22 angiosperm species provided some clues indicating that a γ whole genome triplication event of eudicots possibility experienced a two-step process. These results are valuable for improving A. trifoliata fruit traits and theoretically elucidating evolutionary processes of angiosperms, especially eudicots.
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Affiliation(s)
- Shengfu Zhong
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Huai Yang
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Ju Guan
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Jinliang Shen
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Tianheng Ren
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhi Li
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Feiquan Tan
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Qing Li
- Department of Biology and Chemistry, Chongqing Industry and Trade Polytechnic, Chongqing 408000, China
| | - Peigao Luo
- Key Laboratory of Plant Genetics and Breeding at Sichuan Agricutural University of Sichuan Province, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence:
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Genome-Wide Identification and Expression Analysis of WRKY Transcription Factors in Akebiatrifoliata: A Bioinformatics Study. Genes (Basel) 2022; 13:genes13091540. [PMID: 36140708 PMCID: PMC9498614 DOI: 10.3390/genes13091540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 11/17/2022] Open
Abstract
WRKY transcription factors have been found in most plants and play an important role in regulating organ growth and disease response. Outlining the profile of WRKY genes is a very useful project for studying morphogenesis and resistance formation. In the present study, a total of 63 WRKY genes consisting of 13 class I, 41 class II, and 9 class III genes were identified from the newly published A. trifoliata genome, of which 62 were physically distributed on all 16 chromosomes. Structurally, two AkWRKY genes (AkWRKY6 and AkWRKY52) contained four domains, and AkWRKY17 lacked the typical heptapeptide structure. Evolutionarily, 42, 16, and 5 AkWRKY genes experienced whole genome duplication (WGD) or fragmentation, dispersed duplication, and tandem duplication, respectively; 28 Ka/Ks values of 30 pairs of homologous genes were far lower than 1, while those of orthologous gene pairs between AkWRKY41 and AkWRKY52 reached up to 2.07. Transcriptome analysis showed that many of the genes were generally expressed at a low level in 12 fruit samples consisting of three tissues, including rind, flesh, and seeds, at four developmental stages, and interaction analysis between AkWRKY and AkNBS genes containing W-boxes suggested that AkWRKY24 could play a role in plant disease resistance by positively regulating AkNBS18. In summary, the WRKY gene family of A. trifoliata was systemically characterized for the first time, and the data and information obtained regarding AkWRKY could be very useful in further theoretically elucidating the molecular mechanisms of plant development and response to pathogens and practically improving favorable traits such as disease resistance.
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Chen W, Yang H, Zhong S, Zhu J, Zhang Q, Li Z, Ren T, Tan F, Shen J, Li Q, Luo P. Expression Profiles of Microsatellites in Fruit Tissues of Akebia trifoliata and Development of Efficient EST-SSR Markers. Genes (Basel) 2022; 13:genes13081451. [PMID: 36011362 PMCID: PMC9408125 DOI: 10.3390/genes13081451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 12/03/2022] Open
Abstract
Akebia trifoliata, a member of the family Lardizabalaceae, has high exploitation potential for multiple economic purposes, so genetic improvements to meet requirements for commercial demand are needed. However, this progress is largely impeded by a lack of effective selection markers. In this study, we obtained 271.49 Gb of clean transcriptomic data from 12 samples (three tissues at four developmental stages) of A. trifoliata fruit. We identified 175,604, 194,370, and 207,906 SSRs from the de novo assembled 416,363, 463,756, and 491,680 unigene sequences obtained from the flesh, seed, and rind tissues, respectively. The profile and proportion of SSR motifs expressed in each fruit tissue and developmental stage were remarkably similar, but many trinucleotide repeats had differential expression levels among different tissues or at different developmental stages. In addition, we successfully designed 16,869 functional EST-SSR primers according to the annotated unigenes. Finally, 94 and 72 primer pairs out of 100 randomly selected primer pairs produced clear bands and polymorphic bands, respectively. These results were also used to elucidate the expression profiles of different tissues at various stages. Additionally, we provided a set of effective, polymorphic, and reliable EST-SSR markers sufficient for accelerating the discovery of metabolic and pathway-specific functional genes for genetic improvement and increased commercial productivity.
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Affiliation(s)
- Wei Chen
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Huai Yang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Shengfu Zhong
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Jun Zhu
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiuyi Zhang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhi Li
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Tianheng Ren
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Feiquan Tan
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
| | - Jinliang Shen
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Qing Li
- Department of Biology and Chemistry, Chongqing Industry and Trade Polytechnic, Chongqing 408000, China
| | - Peigao Luo
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence:
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Zhong S, Chen W, Yang H, Shen J, Ren T, Li Z, Tan F, Luo P. Characterization of Microsatellites in the Akebia trifoliata Genome and Their Transferability and Development of a Whole Set of Effective, Polymorphic, and Physically Mapped Simple Sequence Repeat Markers. FRONTIERS IN PLANT SCIENCE 2022; 13:860101. [PMID: 35371184 PMCID: PMC8971770 DOI: 10.3389/fpls.2022.860101] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Akebia trifoliata is a perennial climbing woody liana plant with a high potential for commercial exploitation and theoretical research. Similarly, microsatellites (simple sequence repeats, SSRs) also have dual roles: as critical markers and as essential elements of the eukaryotic genome. To characterize the profile of SSRs and develop molecular markers, the high-quality assembled genome of A. trifoliata was used. Additionally, to determine the potential transferability of SSR loci, the genomes of Amborella trichopoda, Oryza sativa, Vitis vinifera, Arabidopsis thaliana, Papaver somniferum, and Aquilegia coerulea were also used. We identified 434,293 SSRs with abundant short repeats, such as 290,868 (66.98%) single-nucleotide repeats (SNRs) and 113,299 (26.09%) dinucleotide repeats (DNRs) in the A. trifoliata genome. 398,728 (91.81%) SSRs on 344,283 loci were physically mapped on the chromosomes, and a positive correlation (r = 0.98) was found between the number of SSRs and chromosomal length. Additionally, 342,916 (99.60%) potential SSR markers could be designed from the 344,283 physically mapped loci, while only 36,160 could be viewed as high-polymorphism-potential (HPP) markers, findings that were validated by PCR. Finally, SSR loci exhibited broad potential transferability, particularly DNRs such as the "AT/AT" and "AG/CT" loci, among all angiosperms, a finding that was not related to the genetic divergence distance. Practically, we developed a whole set of effective, polymorphic, and physically anchored molecular markers and found that, evolutionarily, DNRs could be responsible for microsatellite origin and protecting gene function.
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Affiliation(s)
- Shengfu Zhong
- Provincial Key Laboratory for Plant Genetics and Breeding, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Wei Chen
- Provincial Key Laboratory for Plant Genetics and Breeding, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Huai Yang
- Provincial Key Laboratory for Plant Genetics and Breeding, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Jinliang Shen
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Tianheng Ren
- Provincial Key Laboratory for Plant Genetics and Breeding, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Zhi Li
- Provincial Key Laboratory for Plant Genetics and Breeding, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Feiquan Tan
- Provincial Key Laboratory for Plant Genetics and Breeding, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Peigao Luo
- Provincial Key Laboratory for Plant Genetics and Breeding, College of Agronomy, Sichuan Agricultural University, Chengdu, China
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