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Raman G, Park S, Lee EM, Park S. Evidence of mitochondrial DNA in the chloroplast genome of Convallaria keiskei and its subsequent evolution in the Asparagales. Sci Rep 2019; 9:5028. [PMID: 30903007 PMCID: PMC6430787 DOI: 10.1038/s41598-019-41377-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 03/07/2019] [Indexed: 11/10/2022] Open
Abstract
DNA transfer between internal organelles such as the nucleus, mitochondrion, and plastid is a well-known phenomenon in plant evolution, and DNA transfer from the plastid and mitochondrion to the nucleus, from the plastid to the mitochondrion, and from the nucleus to the mitochondrion has been well-documented in angiosperms. However, evidence of the transfer of mitochondrial DNA (mtDNA) to the plastid has only been found in three dicotyledons and one monocotyledon. In the present study, we characterised and analysed two chloroplast (cp) genome sequences of Convallaria keiskei and Liriope spicata, and found that C. keiskei has the largest cp genome (162,109 bp) in the Asparagaceae. Interestingly, C. keiskei had a ~3.3-kb segment of mtDNA in its cp genome and showed similarity with the mt gene rpl10 as a pseudogene. Further analyses revealed that mtDNA transfer only occurred in C. keiskei in the Nolinoideae, which diverged very recently (7.68 million years ago (mya); 95% highest posterior density (HPD): 14.55–2.97 mya). These findings indicate that the C. keiskei cp genome is unique amongst monocotyledon land plants, but further work is necessary to understand the direction and mechanism involved in the uptake of mtDNA by the plastid genome of C. keiskei.
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Affiliation(s)
- Gurusamy Raman
- Department of Life Sciences, Yeungnam University, Gyeongsan, Gyeongsan-buk, Republic of Korea
| | - Seongjun Park
- Department of Life Sciences, Yeungnam University, Gyeongsan, Gyeongsan-buk, Republic of Korea
| | - Eun Mi Lee
- Department of Life Sciences, Yeungnam University, Gyeongsan, Gyeongsan-buk, Republic of Korea
| | - SeonJoo Park
- Department of Life Sciences, Yeungnam University, Gyeongsan, Gyeongsan-buk, Republic of Korea.
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Lin CS, Chen JJW, Huang YT, Chan MT, Daniell H, Chang WJ, Hsu CT, Liao DC, Wu FH, Lin SY, Liao CF, Deyholos MK, Wong GKS, Albert VA, Chou ML, Chen CY, Shih MC. The location and translocation of ndh genes of chloroplast origin in the Orchidaceae family. Sci Rep 2015; 5:9040. [PMID: 25761566 PMCID: PMC4356964 DOI: 10.1038/srep09040] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 02/16/2015] [Indexed: 11/22/2022] Open
Abstract
The NAD(P)H dehydrogenase complex is encoded by 11 ndh genes in plant chloroplast (cp) genomes. However, ndh genes are truncated or deleted in some autotrophic Epidendroideae orchid cp genomes. To determine the evolutionary timing of the gene deletions and the genomic locations of the various ndh genes in orchids, the cp genomes of Vanilla planifolia, Paphiopedilum armeniacum, Paphiopedilum niveum, Cypripedium formosanum, Habenaria longidenticulata, Goodyera fumata and Masdevallia picturata were sequenced; these genomes represent Vanilloideae, Cypripedioideae, Orchidoideae and Epidendroideae subfamilies. Four orchid cp genome sequences were found to contain a complete set of ndh genes. In other genomes, ndh deletions did not correlate to known taxonomic or evolutionary relationships and deletions occurred independently after the orchid family split into different subfamilies. In orchids lacking cp encoded ndh genes, non cp localized ndh sequences were identified. In Erycina pusilla, at least 10 truncated ndh gene fragments were found transferred to the mitochondrial (mt) genome. The phenomenon of orchid ndh transfer to the mt genome existed in ndh-deleted orchids and also in ndh containing species.
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Affiliation(s)
- Choun-Sea Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Jeremy J W Chen
- Institute of Biomedical Sciences, National Chung-Hsing University, Taichung, Taiwan
| | - Yao-Ting Huang
- Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan
| | - Ming-Tsair Chan
- 1] Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan [2] Academia Sinica Biotechnology Center in Southern Taiwan, Tainan, Taiwan
| | - Henry Daniell
- Departments of Biochemistry and Pathology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Wan-Jung Chang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Chen-Tran Hsu
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - De-Chih Liao
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Fu-Huei Wu
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Sheng-Yi Lin
- Institute of Biomedical Sciences, National Chung-Hsing University, Taichung, Taiwan
| | - Chen-Fu Liao
- Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan
| | - Michael K Deyholos
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Gane Ka-Shu Wong
- 1] Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada [2] Department of Medicine, University of Alberta, Edmonton AB, Canada [3] BGI-Shenzhen, Beishan Industrial Zone, Yantian District, Shenzhen, China
| | - Victor A Albert
- Department of Biological Sciences, University at Buffalo, Buffalo, NY, USA
| | - Ming-Lun Chou
- Department of Life Sciences, Tzu Chi University, Hualien, Taiwan
| | - Chun-Yi Chen
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Ming-Che Shih
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
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Byers E, Bonen L. Potential role of tRNAs in wheat and Lolium mitochondrial rps7 transcript processing. Genome 2012; 55:615-21. [DOI: 10.1139/g2012-052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The wheat mitochondrial gene for ribosomal protein S7 exhibits multiple transcripts that share the same 3′ terminus but range in overall length from 3.4 to 0.7 kb because of 5′end-maturation events. The longest detectable precursor RNA maps precisely to the 3′ end of a chloroplast-origin tRNA-Phe gene, consistent with it providing signals for endonucleolytic cleavage. Steady-state levels of precursor RNAs were seen to be lower in seedlings than in germinating embryos, although the degree of editing within untranslated regions (UTRs) was higher in seedlings. In another grass, Lolium multiflorum Lam., rps7 displays transcripts of 1.3 and 0.7 kb, and although the distal 5′ UTRs are unrelated in sequence to those of wheat, the 5′ terminus of the longer transcript also maps to a tRNA gene, in this case the native mitochondrial-type tRNA-Ser. Our findings illustrate the plasticity of plant mitochondrial transcriptional units and the recruitment of chloroplast-origin sequences for the expression of mitochondrial genes.
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Affiliation(s)
- Evan Byers
- Biology Department, University of Ottawa, 30 Marie Curie, Ottawa, ON K1N 6N5, Canada
| | - Linda Bonen
- Biology Department, University of Ottawa, 30 Marie Curie, Ottawa, ON K1N 6N5, Canada
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Korpelainen H. The evolutionary processes of mitochondrial and chloroplast genomes differ from those of nuclear genomes. Naturwissenschaften 2004; 91:505-18. [PMID: 15452701 DOI: 10.1007/s00114-004-0571-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
This paper first introduces our present knowledge of the origin of mitochondria and chloroplasts, and the organization and inheritance patterns of their genomes, and then carries on to review the evolutionary processes influencing mitochondrial and chloroplast genomes. The differences in evolutionary phenomena between the nuclear and cytoplasmic genomes are highlighted. It is emphasized that varying inheritance patterns and copy numbers among different types of genomes, and the potential advantage achieved through the transfer of many cytoplasmic genes to the nucleus, have important implications for the evolution of nuclear, mitochondrial and chloroplast genomes. Cytoplasmic genes transferred to the nucleus have joined the more strictly controlled genetic system of the nuclear genome, including also sexual recombination, while genes retained within the cytoplasmic organelles can be involved in selection and drift processes both within and among individuals. Within-individual processes can be either intra- or intercellular. In the case of heteroplasmy, which is attributed to mutations or biparental inheritance, within-individual selection on cytoplasmic DNA may provide a mechanism by which the organism can adapt rapidly. The inheritance of cytoplasmic genomes is not universally maternal. The presence of a range of inheritance patterns indicates that different strategies have been adopted by different organisms. On the other hand, the variability occasionally observed in the inheritance mechanisms of cytoplasmic genomes reduces heritability and increases environmental components in phenotypic features and, consequently, decreases the potential for adaptive evolution.
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Affiliation(s)
- Helena Korpelainen
- Department of Applied Biology, University of Helsinki, PO Box 27, 00014, Helsinki, Finland.
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Abstract
Orobanche species characterization using plastid sequences as molecular markers revealed that O. cumana contains at least two distinct rbcL sequences: one similar in size to the truncated rbcL pseudogene from O. cernua, a closely related species, and another with a size comparable to that of rbcL plastid genes from autotrophic plants. In this work, the nucleotide sequences of these two copies are reported and analysed. The organization of the O. cumana plastid genome was investigated using a long-distance PCR strategy in order to determine their localization. Because of the non-plastid localization of the rbcL larger copy, Southern blot and PCR chromosome-walking experiments were carried out to better characterize this transferred sequence and to identify its localization. Then the mode of multiple transfer of genetic information from plastid to nucleus and the concomitant plastid sequence disorganization and migration during parasitic plant evolution are discussed.
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Affiliation(s)
- Philippe Delavault
- Groupe de Physiologie et Pathologie Végétales, Faculté des Sciences et des Techniques, BP 92208, 2 rue de la Houssinière, 44322 Cedex 3, Nantes, France.
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