| Variations and reduction of plastome are associated with the evolution of parasitism in Convolvulaceae | |
Chen, Li-Qiong; Li, Xin6; Yao, Xin ; Li, De-Zhu; Barrett, Craig3; Depamphilis, Claude W.; Yu, Wen-Bin
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| 2024 | |
| Source Publication | PLANT MOLECULAR BIOLOGY
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| ISSN | 0167-4412 |
| Volume | 114Issue:3Pages:- |
| Abstract | Parasitic lifestyle can often relax the constraint on the plastome, leading to gene pseudogenization and loss, and resulting in diverse genomic structures and rampant genome degradation. Although several plastomes of parasitic Cuscuta have been reported, the evolution of parasitism in the family Convolvulaceae which is linked to structural variations and reduction of plastome has not been well investigated. In this study, we assembled and collected 40 plastid genomes belonging to 23 species representing four subgenera of Cuscuta and ten species of autotrophic Convolvulaceae. Our findings revealed nine types of structural variations and six types of inverted repeat (IR) boundary variations in the plastome of Convolvulaceae spp. These structural variations were associated with the shift of parasitic lifestyle, and IR boundary shift, as well as the abundance of long repeats. Overall, the degradation of Cuscuta plastome proceeded gradually, with one clade exhibiting an accelerated degradation rate. We observed five stages of gene loss in Cuscuta, including NAD(P)H complex -> PEP complex -> Photosynthesis-related -> Ribosomal protein subunits -> ATP synthase complex. Based on our results, we speculated that the shift of parasitic lifestyle in early divergent time promoted relaxed selection on plastomes, leading to the accumulation of microvariations, which ultimately resulted in the plastome reduction. This study provides new evidence towards a better understanding of plastomic evolution, variation, and reduction in the genus Cuscuta. The gain of parasitism in Cuscuta does trigger structural variations of the plastome, and it may initiate the relaxed selection in plastid genes, which leads to accumulation of microvariations, subsequent plastome reduction and gene loss. |
| Keyword | Plastome degradation Parasitism Structural variation Cuscuta Phylogenomics |
| Subject Area | Biochemistry & Molecular Biology ; Plant Sciences |
| DOI | 10.1007/s11103-024-01440-1 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001202406200001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/14056 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 2.Chinese Acad Sci, Yunnan Key Lab Conservat Trop Rainforests & Asian, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China 4.West Virginia Univ, Dept Biol, Morgantown, WV 26506 USA 5.Depamphilis, Claude W.] Penn State Univ, Dept Biol, State Coll, PA 16802 USA 6.Chinese Acad Sci, Southeast Asia Biodivers Res Inst, Mengla 666303, Yunnan, Peoples R China 7.Nara Inst Sci & Technol, Grad Sch Sci & Technol, Div Biol Sci, Ikoma, Nara 6300192, Japan |
| Recommended Citation GB/T 7714 | Chen, Li-Qiong,Li, Xin,Yao, Xin,et al. Variations and reduction of plastome are associated with the evolution of parasitism in Convolvulaceae[J]. PLANT MOLECULAR BIOLOGY,2024,114(3):-. |
| APA | Chen, Li-Qiong.,Li, Xin.,Yao, Xin.,Li, De-Zhu.,Barrett, Craig.,...&Yu, Wen-Bin.(2024).Variations and reduction of plastome are associated with the evolution of parasitism in Convolvulaceae.PLANT MOLECULAR BIOLOGY,114(3),-. |
| MLA | Chen, Li-Qiong,et al."Variations and reduction of plastome are associated with the evolution of parasitism in Convolvulaceae".PLANT MOLECULAR BIOLOGY 114.3(2024):-. |
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| Variations and reduc（1897KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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