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De Silva S, Cagliero C, Gostel MR, Johnson G, Anderson JL. Versatile DNA extraction from diverse plant taxa using ionic liquids and magnetic ionic liquids: a methodological breakthrough for enhanced sample utility. PLANT METHODS 2024; 20:91. [PMID: 38877523 PMCID: PMC11177442 DOI: 10.1186/s13007-024-01217-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 06/01/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND There is a growing demand for fast and reliable plant biomolecular analyses. DNA extraction is the major bottleneck in plant nucleic acid-based applications especially due to the complexity of tissues in different plant species. Conventional methods for plant cell lysis and DNA extraction typically require extensive sample preparation processes and large quantities of sample and chemicals, elevated temperatures, and multiple sample transfer steps which pose challenges for high throughput applications. RESULTS In a prior investigation, an ionic liquid (IL)-based modified vortex-assisted matrix solid phase dispersion approach was developed using the model plant, Arabidopsis thaliana (L.) Heynh. Building upon this foundational study, the present study established a simple, rapid and efficient protocol for DNA extraction from milligram fragments of plant tissue representing a diverse range of taxa from the plant Tree of Life including 13 dicots and 4 monocots. Notably, the approach was successful in extracting DNA from a century old herbarium sample. The isolated DNA was of sufficient quality and quantity for sensitive molecular analyses such as qPCR. Two plant DNA barcoding markers, the plastid rbcL and nuclear ribosomal internal transcribed spacer (nrITS) regions were selected for DNA amplification and Sanger sequencing was conducted on PCR products of a representative dicot and monocot species. Successful qPCR amplification of the extracted DNA up to 3 weeks demonstrated that the DNA extracted using this approach remains stable at room temperature for an extended time period prior to downstream analysis. CONCLUSIONS The method presented here is a rapid and simple approach enabling cell lysis and DNA extraction from 1.5 mg of plant tissue across a broad range of plant taxa. Additional purification prior to DNA amplification is not required due to the compatibility of the extraction solvents with qPCR. The method has tremendous potential for applications in plant biology that require DNA, including barcoding methods for agriculture, conservation, ecology, evolution, and forensics.
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Affiliation(s)
- Shashini De Silva
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA
| | - Cecilia Cagliero
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Turin, I-10125, Italy
| | - Morgan R Gostel
- Botanical Research Institute of Texas, Fort Worth, TX, 76107-3400, USA
| | | | - Jared L Anderson
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.
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Li QQ, Zhang ZP, Aogan, Wen J. Comparative chloroplast genomes of Argentina species: genome evolution and phylogenomic implications. FRONTIERS IN PLANT SCIENCE 2024; 15:1349358. [PMID: 38766467 PMCID: PMC11099909 DOI: 10.3389/fpls.2024.1349358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 03/25/2024] [Indexed: 05/22/2024]
Abstract
The genus Argentina Hill belongs to the tribe Potentilleae Sweet and contains approximately 75 species predominantly distributed in the Sino-Himalayan region and the Malesian archipelago. So far we have less knowledge on the phylogenetic relationships within Argentina owing to limited sampling of Argentina taxa or gene fragments in previous studies. Moreover, to date there is no phylogenetic study on Argentina from the perspective of comparative chloroplast (cp) genomics. Here we performed comparative genomic analyses on the cp genomes of 39 accessions representing 18 taxa of Argentina. The Argentina cp genomes presented the typical quadripartite structure, with the sizes ranging from 155 096 bp to 157 166 bp. The 39 Argentina cp genomes contained a set of 112 unique genes, comprising four ribosomal RNA (rRNA) genes, 30 transfer RNA (tRNA) genes, as well as 78 protein-coding genes (PCGs). The cp genome organization, gene content and order in Argentina were highly conserved, but some visible divergences were present in IR/SC boundary regions. Ten regions (trnH-GUG-psbA, trnG-GCC-trnfM-CAU, trnD-GUC-trnY-GUA, rpl32-trnL-UAG, atpH-atpI, rps16-trnQ-UUG, trnS-GCU-trnG-UCC, ndhF-rpl32, trnR-UCU-atpA, and accD-psaI) were identified as excellent candidate DNA markers for future studies on species identification, population genetics and phylogeny of Argentina. Our results indicated that Argentina is monophyletic. In the current sampling, the A. smithiana - A. anserina clade was sister to the remainder of Argentina. Our results corroborated the previous taxonomic treatments to transfer A. phanerophlebia and A. micropetala from the genus Sibbaldia L. to Argentina. Our results showed close relationships among A. stenophylla, A. microphylla, A. taliensis, and A. tatsienluensis, congruent with previous studies based on the morphology of these species. Twenty-six genes (rps3, rps15, rps16, rps19, rpl16, rpl20, rpl22, rpoA, rpoB, rpoC1, rpoC2, atpA, atpF, psbB, psbF, ndhA, ndhB, ndhC, ndhD, ndhF, rbcL, accD, ccsA, matK, ycf1, ycf2) were with sites under positive selection, and adaptive evolution of these genes might have played crucial roles in Argentina species adaptation to the harsh mountain environment. This study will facilitate future work on taxonomy, phylogenetics, and adaptive evolution of Argentina.
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Affiliation(s)
- Qin-Qin Li
- College of Life Science and Technology, Inner Mongolia Normal University, Hohhot, China
- Key Laboratory of Biodiversity Conservation and Sustainable Utilization in Mongolian Plateau for College and University of Inner Mongolia Autonomous Region, Hohhot, China
- Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States
| | - Zhi-Ping Zhang
- College of Computer Science and Technology, Inner Mongolia Normal University, Hohhot, China
| | - Aogan
- College of Life Science and Technology, Inner Mongolia Normal University, Hohhot, China
| | - Jun Wen
- Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States
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Zheng W, Liu J, Zhao W, Zhao Z, Lan Z, Wen J. The complete chloroplast genomes of three Alismataceae species, including the medicinally important Alisma orientale. Mitochondrial DNA B Resour 2024; 9:385-389. [PMID: 38562439 PMCID: PMC10984228 DOI: 10.1080/23802359.2024.2320419] [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: 12/06/2023] [Accepted: 02/13/2024] [Indexed: 04/04/2024] Open
Abstract
Alismataceae is one of the early diverged families of monocotyledonous plants. We report the complete chloroplast genomes of three Alisma species, including Alisma orientale (Sam.) Juzep. 1934, A. subcordatum Raf. 1908, and A. triviale Pursh 1813, of which A. orientale is a traditional Chinese medical plant used widely to treat diuretics, diabetes, hepatitis, and inflammation. We sequenced the complete chloroplast genomes with the Illumina Nova-Seq 6000 platform using herbarium collections. The chloroplast genomes of A. orientale, A. subcordatum and A. triviale are 159,861 bp, 160,180 bp, and 159,727 bp in length, respectively. The three chloroplast genomes each contain 113 genes, including four rRNAs, 30 tRNAs genes, and 79 protein-coding genes, and the average GC content is 36.0%. Based on the whole chloroplast genomes of 19 species of Alismataceae and the close allies, the medicinally important A. orientale was found to be closely related to another medicinal plant Alisma plantago-aquatica L. 1753 in the phylogenetic analysis. The genus Alisma was supported to be monophyletic.
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Affiliation(s)
- Wen Zheng
- School of Pharmacy/College of Modern Chinese Medicine Industry, State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jing Liu
- College of Life Science, Sichuan Agricultural University, Ya’an, China
| | - Wenqi Zhao
- School of Pharmacy/College of Modern Chinese Medicine Industry, State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zongyi Zhao
- School of Pharmacy/College of Modern Chinese Medicine Industry, State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhiqiong Lan
- School of Pharmacy/College of Modern Chinese Medicine Industry, State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Botany, National Museum of Natural History, MRC166, Smithsonian Institution, Washington, DC, USA
| | - Jun Wen
- Department of Botany, National Museum of Natural History, MRC166, Smithsonian Institution, Washington, DC, USA
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Talavera A, Nie ZL, Ma ZY, Johnson G, Ickert-Bond SM, Zimmer EA, Wen J. Phylogenomic analyses using a new 1013-gene Vitaceae bait-set support major groups of North American Vitis. Mol Phylogenet Evol 2023:107866. [PMID: 37354923 DOI: 10.1016/j.ympev.2023.107866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 06/16/2023] [Accepted: 06/17/2023] [Indexed: 06/26/2023]
Abstract
A set of newly designed Vitaceae baits targeting 1013 genes was employed to explore phylogenetic relationships among North American Vitis. Eurasian Vitis taxa including Vitis vinifera were found to be nested within North American Vitis subgenus Vitis. North American Vitis subgenus Vitis can be placed into nine main groups: the Monticola group, the Occidentales group, the Californica group, the Vinifera group (introduced from Eurasia), the Mustangensis group, the Palmata group, the Aestivalis group, the Labrusca group, and the Cinerea group. Strong cytonuclear discordances were detected in North American Vitis, with many species non-monophyletic in the plastid phylogeny, while monophyletic in the nuclear phylogeny. The phylogenomic analyses support recognizing four distinct species in the Vitis cinerea complex in North America: V. cinerea, V. baileyana, V. berlandieri, and V. simpsonii. Such treatment will better serve the conservation of wild Vitis diversity in North America. Yet the evolutionary history of Vitis is highly complex, with the concordance analyses indicating conflicting signals across the phylogeny. Cytonuclear discordances and Analyses using the Species Networks applying Quartets (SNaQ) method support extensive hybridizations in North American Vitis. The results further indicate that plastid genomes alone are insufficient for resolving the evolutionary history of plant groups that have undergone rampant hybridization, like the case in North American Vitis. Nuclear gene data are essential for species delimitation, identification and reconstructing evolutionary relationships; therefore, they are imperative for plant phylogenomic studies.
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Affiliation(s)
- Alicia Talavera
- Department of Botany, National Museum of Natural History, MRC166, Smithsonian Institution, Washington, DC 20013-7012, USA; Departamento de Botánica y Fisiología Vegetal, Universidad de Málaga, 29071, Málaga, Spain.
| | - Ze-Long Nie
- Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China
| | - Zhi-Yao Ma
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong, 518000 China
| | - Gabriel Johnson
- Department of Botany, National Museum of Natural History, MRC166, Smithsonian Institution, Washington, DC 20013-7012, USA
| | - Stefanie M Ickert-Bond
- UA Museum of the North Herbarium and Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK 99775-6960, USA
| | - Elizabeth A Zimmer
- Department of Botany, National Museum of Natural History, MRC166, Smithsonian Institution, Washington, DC 20013-7012, USA
| | - Jun Wen
- Department of Botany, National Museum of Natural History, MRC166, Smithsonian Institution, Washington, DC 20013-7012, USA.
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Schenk JJ, Becklund LE, Carey SJ, Fabre PP. What is the "modified" CTAB protocol? Characterizing modifications to the CTAB DNA extraction protocol. APPLICATIONS IN PLANT SCIENCES 2023; 11:e11517. [PMID: 37342162 PMCID: PMC10278931 DOI: 10.1002/aps3.11517] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 06/22/2023]
Abstract
Cetyltrimethylammonium bromide (CTAB)-based methods are widely used to isolate DNA from plant tissues, but the unique chemical composition of secondary metabolites among plant species has necessitated optimization. Research articles often cite a "modified" CTAB protocol without explicitly stating how the protocol had been altered, creating non-reproducible studies. Furthermore, the various modifications that have been applied to the CTAB protocol have not been rigorously reviewed and doing so could reveal optimization strategies across study systems. We surveyed the literature for modified CTAB protocols used for the isolation of plant DNA. We found that every stage of the CTAB protocol has been modified, and we summarized those modifications to provide recommendations for extraction optimization. Future genomic studies will rely on optimized CTAB protocols. Our review of the modifications that have been used, as well as the protocols we provide here, could better standardize DNA extractions, allowing for repeatable and transparent studies.
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Affiliation(s)
- John J. Schenk
- Department of Environmental and Plant BiologyOhio UniversityAthensOhio45701–2979USA
| | - L. Ellie Becklund
- Department of Environmental and Plant BiologyOhio UniversityAthensOhio45701–2979USA
| | - S. James Carey
- Department of Environmental and Plant BiologyOhio UniversityAthensOhio45701–2979USA
| | - Paige P. Fabre
- Department of Environmental and Plant BiologyOhio UniversityAthensOhio45701–2979USA
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