Internet Explorer). Nath, U., Crawford, B. C., Carpenter, R. & Coen, E. Genetic control of surface curvature. Can. Front. 43, 3104 (1977). A. fimbriata and A. trichopoda exhibit the lowest mean size for the investigated gene families. Sayyari, E. & Mirarab, S. Testing for polytomies in phylogenetic species trees using quartet frequencies. Li, R. et al. The opium poppy genome and morphinan production. 73). Commun. 76) with default parameters, respectively. J. Biomol. We ran all analyses twice to check for consistency and to ensure the effective sample size was >200 in Tracer v.1.7 (http://tree.bio.ed.ac.uk/software/tracer/). Except for A. fimbriata, seven other genomes were selected for polyploidization analysis: A. trichopoda, N. colorata, P. nigrum, C. kanehirae, P. americana, L. chinense and V. vinifera. Vaser, R., Sovi, I., Nagarajan, N. & iki, M. Fast and accurate de novo genome assembly from long uncorrected reads. Publishers note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Chaw, S. M. et al. 1c and Extended Data Fig. Plant Sci. Syntenic blocks with more than ten genes are linked by grey lines; the largest ten syntenic blocks are highlighted in orange. Schutte, H. R., Orban, U. 176, 14101422 (2018). 5g. Finally, we inferred the WGD history by investigating the syntenic depth ratios within and among genomes. Scale bars, 1cm. Li, H. Minimap and miniasm: fast mapping and de novo assembly for noisy long sequences. J. Ou, S. & Jiang, N. LTR_retriever: a highly accurate and sensitive program for identification of long terminal repeat retrotransposons. Amborella was chosen because it was already known to contain one foreign gene (3) and because preliminary studies suggested it might be unusually rich in HGT. 4a and 5a,c and Supplementary Fig. The numbers of floral organ identity genes are also shown and coloured according to the species colour scheme. Biol. 103, 19101923 (2020). Science 370, 8289 (2020). Many of the fundamental properties of eukaryotes arose from horizontal evolution on a grand scale-that is, the endosymbiotic origin of the mitochondrion and plastid from bacterial progenitors ( 1 ). Plant Physiol. 78) with default parameters. 6ad). The species tree constructed with the 98 SSC gene families from 22 species (T3 topology) and rooted with S. moellendorffii was used as the input tree. An analysis integrating phylogenetic inference with expression pattern data suggests that Af06G158900 and Af01G154900 are functionally consequential sesquiterpene and monoterpene synthase genes, respectively. In addition, the B-function genes (AfAP3 and AfPI) are positively co-expressed with three structural genes (F3H, DFR and ANS) and a regulatory gene (TRANSPARENT TESTA 8, TT8), suggesting that they may regulate anthocyanin biosynthesis (Supplementary Note 5.5 and Fig. The expression values (logarithm to base 2 of TPM plus 0.001) of TPS genes in different tissues. 7), lending support for the polytomy hypothesis or rapid diversification with a high degree of incomplete lineage sorting (ILS) between successive bifurcations. In addition, we used ASTRAL-Pro and STAG to perform a phylogenetic analysis of all gene families containing paralogue genes103,104. d, Distribution of A. fimbriata genomic features. 1a and Extended Data Fig. 10, 421 (2009). 6d), it is very likely that Af06G158900 is a main sesquiterpene synthase-coding gene in A. fimbriata (Supplementary Note 6.2 and Fig. Front. 10. Dudchenko, O. et al. 37, 32923307 (2020). Genome Biol. Bioinformatics 4, 10 (2009). Next, all the CCSs were further classified into full-length non-chimaeric (FLNC) and non-full-length (nFL) transcript sequences on the basis of whether the 5-primers, 3-primers and poly(A) tail could be detected. Google Scholar. To investigate the impact of taxon sampling on phylogenomic analyses, we constructed datasets of differently selected species in eudicots, monocots, magnoliids and the A. trichopoda (sister to all other extant angiosperm). The cDNA libraries were constructed using the SMARTer PCR cDNA Synthesis Kit. Genes 9, 132 (2018). An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV. The volatiles were further extracted using SPME fibre with 50/30m of divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) (Supelco Co.). Google Scholar. PubMed 4 and Supplementary Table 2.8). The output from OrthoMCL was summarized using a custom Python script to obtain the number of genes from each species belonging to the orthogroups. & Zachgo, S. Analysis of the CYC/TB1 class of TCP transcription factors in basal angiosperms and magnoliids. 102) with local posterior probability (LPP). 40, e49 (2012). Sequencing the Amborella genome, we identified an ancient . Cui, L. et al. J. Ethnopharmacol. 1d and Supplementary Fig. To investigate the floral volatile production of A. fimbriata, we collected the newly opened flowers for gas chromatographymass spectrometry (GCMS) analysis, with the added 0.0825g of 3-octanol as an internal standard. Further information on research design is available in the Nature Research Reporting Summary linked to this article. Extended Data Fig. 32, 17921797 (2004). Camacho, C. et al. ISSN 2055-0278 (online). Press, 1976). State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, the Chinese Academy of Sciences, Beijing, China, Liuyu Qin,Yiheng Hu,Jinpeng Wang,Xiaoliang Wang,Ran Zhao,Hongyan Shan,Kunpeng Li,Peng Xu,Hanying Wu,Xueqing Yan,Lumei Liu,Xin Yi,Hongzhi Kong&Yuannian Jiao, University of Chinese Academy of Sciences, Beijing, China, Liuyu Qin,Yiheng Hu,Jinpeng Wang,Xiaoliang Wang,Kunpeng Li,Peng Xu,Xueqing Yan,Lumei Liu,Hongzhi Kong&Yuannian Jiao, School of Life Sciences and Center for Genomics and Computational Biology, North China University of Science and Technology, Tangshan, China, Institute of Botany, Dresden University of Technology, Dresden, Germany, Department of Plant Biology, University of Georgia, Athens, GA, USA, Plant Genome Mapping Laboratory, University of Georgia, Athens, GA, USA, Department of Biology and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA, Florida Museum of Natural History, University of Florida, Gainesville, FL, USA, Department of Biology, University of Florida, Gainesville, FL, USA, You can also search for this author in 12, 3498 (2021). Shang, J. et al. Salmela, L. & Rivals, E. LoRDEC: accurate and efficient long read error correction. For phylogeny reconstruction, protein sequences from each gene family were aligned using MUSCLE v.3.8.31 (ref. PubMed Central 3.11a,c and 3.133.15). 277, 830835 (2002). These two libraries were used to annotate the A. fimbriata genome using RepeatMasker and the detected TEs were then combined to obtain the final TE annotation. 4.124.15). 1). 4.2). Ou, S., Chen, J. Curr. A protocol for the isolation of egg apparatus cells from the basal angiosperm Amborella trichopoda to generate RNA-seq data for evolutionary studies of fertilization-associated genes. Moreover, codon usage bias also affected the resolution of the tree as well as the topology (Supplementary Note 4.4 and Supplementary Figs. 4.1). Nat. Transl. a, Possible topologies among magnoliids, monocots and eudicots. Nucleic Acids Res. Yang, L. et al. c, Effect of gene tree resolution on the quartet frequencies of the 535 MSC gene families. Proc. 24, 15861591 (2007). In contrast, when compared to the eudicot genomes of Vitis vinifera (Vitaceae), Acer yangbiense (Aceraceae), Tetracentron sinense (Trochodendraceae) and Aquilegia coerulea (Ranunculaceae) and the other magnoliid genomes of L. chinense, Magnolia biondii, C. kanehirae and Litsea cubeba, we found that Af6 has syntenic orthologous regions on two or more homoeologous chromosome sets in these species (Extended Data Fig. Heinrich, M., Chan, J., Wanke, S., Neinhuis, C. & Simmonds, M. S. Local uses of Aristolochia species and content of nephrotoxic aristolochic acid 1 and 2-a global assessment based on bibliographic sources. Li, L., Stoeckert, C. J. Jr. & Roos, D. S. OrthoMCL: identification of ortholog groups for eukaryotic genomes. To comprehensively analyse the phylogenetic position of magnoliids, we performed phylogenomic analyses using different datasets and approaches (Supplementary Table 4.1). Mol. 5c). 9, eaan6446 (2017). GeneWise84 and GeMoMa85 were used to annotate the gene models using alignments from amino acid sequence similarity against the A. fimbriata assembled sequences. For synteny analyses, we first performed all-against-all BALSTP (E-value<10-5 and score>100) within and between genomes. and L.Q. Sequencing of the 4-Mb mitochondrial genome of the angiosperm Amborella trichopoda has shown that it contains unprecedented amounts of foreign mitochondrial DNA, including four blocks of sequences that together correspond almost perfectly to one entire moss mitochondrial genome. The overall abundance of proteins involved in mitochondrial gene expression and translation and in the metabolism of lipids, amino acids and nucleotides is only mildly affected by different growth . Through intergenomic comparisons between the A. fimbriata genome and those of Amborella and N. colorata from the ANA grade, we found that regions of A. fimbriata chromosome 6 (Af6) are orthologous with segments of Amborella chromosomes 7 or 9 and N. colorata chromosomes 4 and 12 or chromosomes 2 and 9 (Supplementary Fig. Da, L. et al. 3.15 and 3.16). Google Scholar. Bioinformatics 31, i44i52 (2015). CAS Specht, C. D. & Howarth, D. G. Adaptation in flower form: a comparative evodevo approach. The numbers in the boxes are the TPM expression values for each gene at the pre-anthesis and anthesis stages. and C.W.dP. L.Q. An efficient algorithm for large-scale detection of protein families. Sexual reproduction is particularly complex in flowering plants (angiosperms). Recent studies have demonstrated that a class of nitrophenanthrene carboxylic acids, known as aristolochic acids (AAs), naturally produced by Aristolochia species are highly nephrotoxic and carcinogenic to humans28,29,30. CAS Aristolochia species usually have a highly specialized flower morphology23,24. The A. fimbriata genome may help to clarify early mesangiosperm diversification and the phylogenetic placement of magnoliids through analysis of the evolutionary history of genomic structural variations, as we demonstrate here. We further compared the A. fimbriata genome to those of representative magnoliid, eudicot and monocot species to determine whether or not the associated genomic rearrangements are shared by two or all three mesangiosperm clades. 14, R36 (2013). Branches of the maximum likelihood tree were coloured on the basis of the species colour scheme (on the right). 11, 16501667 (2016). Rueffer, M., Nagakura, N. & Zenk, M. H. Partial purification and properties of S-adenosylmethionine: (R), (S)-norlaudanosoline-6-O-methyltransferase from Argemone platyceras cell cultures. 27, 737746 (2017). Venn diagrams of the selected taxa were generated using InteractiVenn (http://www.interactivenn.net/). Keilwagen, J., Hartung, F. & Grau, J. GeMoMa: homology-based gene prediction utilizing intron position conservation and RNA-seq data. 99) and nucleotide sequences were then forced to fit the amino acid alignments using PAL2NAL v.14 (ref. Sci. Liriodendron genome sheds light on angiosperm phylogeny and species-pair differentiation. Lastly, we performed the Gaussian multipeak fitting of the curve by using the Gaussian approximation function (cftool) in MATLAB, and set the R-squared >95% which is a parameter to evaluate the fitting level. The chromosome-level wintersweet (Chimonanthus praecox) genome provides insights into floral scent biosynthesis and flowering in winter. 1, 100027 (2020). Biol. Cell 99, 367376 (1999). The concatenation-based inferences using the various datasets of amino acid sequences and protein-coding sequences, as well as the partitioned codons, from the 98 SSC and 535 MSC gene families consistently supported magnoliids and eudicots as sister lineages (T2; Supplementary Note 4.1, Fig. Wang, Y. et al. & Pichersky, E. The family of terpene synthases in plants: a mid-size family of genes for specialized metabolism that is highly diversified throughout the kingdom. 3.2 and 3.3), respectively, which strongly support the lack of further WGD in A. fimbriata since the earliest diversification of extant angiosperm lineages (Supplementary Note 3.1). While the expression levels of AfCYC are very low in all of the tissues examined, the three CIN genes (that is, AfCIN1, 2 and 3) show differential expression basipetally, with the highest expression being found in the limb region (Fig. For the Iso-seq data of mixed flower buds sequenced on PacBio Sequel II platform, the raw sequence data were processed by SMRT Link v.8.0 software (https://www.pacb.com/support/software-downloads/). A. 5.1 and Supplementary Table 5.2) and only one homologue for each of the eight classes of floral organ identity genes with high similarity to their corresponding orthologues in Amborella (Fig. Nat. d, Microsynteny comparisons clarified the timing of other previously reported WGDs in magnoliids. 4, e352 (2006). The images or other third party material in this article are included in the articles Creative Commons license, unless indicated otherwise in a credit line to the material. Results indicate that Amborella has acquired one or more copies of 20 of its 31 known mitochondrial protein genes from other land plants, for a total of 26 foreign genes, whereas no evidence for HGT was found in the five sequenced genomes.
sources of mitochondrial protein genes of amborella trichopoda includeaquinas college calendar
Internet Explorer). Nath, U., Crawford, B. C., Carpenter, R. & Coen, E. Genetic control of surface curvature. Can. Front. 43, 3104 (1977). A. fimbriata and A. trichopoda exhibit the lowest mean size for the investigated gene families. Sayyari, E. & Mirarab, S. Testing for polytomies in phylogenetic species trees using quartet frequencies. Li, R. et al. The opium poppy genome and morphinan production. 73). Commun. 76) with default parameters, respectively. J. Biomol. We ran all analyses twice to check for consistency and to ensure the effective sample size was >200 in Tracer v.1.7 (http://tree.bio.ed.ac.uk/software/tracer/). Except for A. fimbriata, seven other genomes were selected for polyploidization analysis: A. trichopoda, N. colorata, P. nigrum, C. kanehirae, P. americana, L. chinense and V. vinifera. Vaser, R., Sovi, I., Nagarajan, N. & iki, M. Fast and accurate de novo genome assembly from long uncorrected reads. Publishers note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Chaw, S. M. et al. 1c and Extended Data Fig. Plant Sci. Syntenic blocks with more than ten genes are linked by grey lines; the largest ten syntenic blocks are highlighted in orange. Schutte, H. R., Orban, U. 176, 14101422 (2018). 5g. Finally, we inferred the WGD history by investigating the syntenic depth ratios within and among genomes. Scale bars, 1cm. Li, H. Minimap and miniasm: fast mapping and de novo assembly for noisy long sequences. J. Ou, S. & Jiang, N. LTR_retriever: a highly accurate and sensitive program for identification of long terminal repeat retrotransposons. Amborella was chosen because it was already known to contain one foreign gene (3) and because preliminary studies suggested it might be unusually rich in HGT. 4a and 5a,c and Supplementary Fig. The numbers of floral organ identity genes are also shown and coloured according to the species colour scheme. Biol. 103, 19101923 (2020). Science 370, 8289 (2020). Many of the fundamental properties of eukaryotes arose from horizontal evolution on a grand scale-that is, the endosymbiotic origin of the mitochondrion and plastid from bacterial progenitors ( 1 ). Plant Physiol. 78) with default parameters. 6ad). The species tree constructed with the 98 SSC gene families from 22 species (T3 topology) and rooted with S. moellendorffii was used as the input tree. An analysis integrating phylogenetic inference with expression pattern data suggests that Af06G158900 and Af01G154900 are functionally consequential sesquiterpene and monoterpene synthase genes, respectively. In addition, the B-function genes (AfAP3 and AfPI) are positively co-expressed with three structural genes (F3H, DFR and ANS) and a regulatory gene (TRANSPARENT TESTA 8, TT8), suggesting that they may regulate anthocyanin biosynthesis (Supplementary Note 5.5 and Fig. The expression values (logarithm to base 2 of TPM plus 0.001) of TPS genes in different tissues. 7), lending support for the polytomy hypothesis or rapid diversification with a high degree of incomplete lineage sorting (ILS) between successive bifurcations. In addition, we used ASTRAL-Pro and STAG to perform a phylogenetic analysis of all gene families containing paralogue genes103,104. d, Distribution of A. fimbriata genomic features. 1a and Extended Data Fig. 10, 421 (2009). 6d), it is very likely that Af06G158900 is a main sesquiterpene synthase-coding gene in A. fimbriata (Supplementary Note 6.2 and Fig. Front. 10. Dudchenko, O. et al. 37, 32923307 (2020). Genome Biol. Bioinformatics 4, 10 (2009). Next, all the CCSs were further classified into full-length non-chimaeric (FLNC) and non-full-length (nFL) transcript sequences on the basis of whether the 5-primers, 3-primers and poly(A) tail could be detected. Google Scholar. To investigate the impact of taxon sampling on phylogenomic analyses, we constructed datasets of differently selected species in eudicots, monocots, magnoliids and the A. trichopoda (sister to all other extant angiosperm). The cDNA libraries were constructed using the SMARTer PCR cDNA Synthesis Kit. Genes 9, 132 (2018). An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV. The volatiles were further extracted using SPME fibre with 50/30m of divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) (Supelco Co.). Google Scholar. PubMed 4 and Supplementary Table 2.8). The output from OrthoMCL was summarized using a custom Python script to obtain the number of genes from each species belonging to the orthogroups. & Zachgo, S. Analysis of the CYC/TB1 class of TCP transcription factors in basal angiosperms and magnoliids. 102) with local posterior probability (LPP). 40, e49 (2012). Sequencing the Amborella genome, we identified an ancient . Cui, L. et al. J. Ethnopharmacol. 1d and Supplementary Fig. To investigate the floral volatile production of A. fimbriata, we collected the newly opened flowers for gas chromatographymass spectrometry (GCMS) analysis, with the added 0.0825g of 3-octanol as an internal standard. Further information on research design is available in the Nature Research Reporting Summary linked to this article. Extended Data Fig. 32, 17921797 (2004). Camacho, C. et al. ISSN 2055-0278 (online). Press, 1976). State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, the Chinese Academy of Sciences, Beijing, China, Liuyu Qin,Yiheng Hu,Jinpeng Wang,Xiaoliang Wang,Ran Zhao,Hongyan Shan,Kunpeng Li,Peng Xu,Hanying Wu,Xueqing Yan,Lumei Liu,Xin Yi,Hongzhi Kong&Yuannian Jiao, University of Chinese Academy of Sciences, Beijing, China, Liuyu Qin,Yiheng Hu,Jinpeng Wang,Xiaoliang Wang,Kunpeng Li,Peng Xu,Xueqing Yan,Lumei Liu,Hongzhi Kong&Yuannian Jiao, School of Life Sciences and Center for Genomics and Computational Biology, North China University of Science and Technology, Tangshan, China, Institute of Botany, Dresden University of Technology, Dresden, Germany, Department of Plant Biology, University of Georgia, Athens, GA, USA, Plant Genome Mapping Laboratory, University of Georgia, Athens, GA, USA, Department of Biology and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA, Florida Museum of Natural History, University of Florida, Gainesville, FL, USA, Department of Biology, University of Florida, Gainesville, FL, USA, You can also search for this author in 12, 3498 (2021). Shang, J. et al. Salmela, L. & Rivals, E. LoRDEC: accurate and efficient long read error correction. For phylogeny reconstruction, protein sequences from each gene family were aligned using MUSCLE v.3.8.31 (ref. PubMed Central 3.11a,c and 3.133.15). 277, 830835 (2002). These two libraries were used to annotate the A. fimbriata genome using RepeatMasker and the detected TEs were then combined to obtain the final TE annotation. 4.124.15). 1). 4.2). Ou, S., Chen, J. Curr. A protocol for the isolation of egg apparatus cells from the basal angiosperm Amborella trichopoda to generate RNA-seq data for evolutionary studies of fertilization-associated genes. Moreover, codon usage bias also affected the resolution of the tree as well as the topology (Supplementary Note 4.4 and Supplementary Figs. 4.1). Nat. Transl. a, Possible topologies among magnoliids, monocots and eudicots. Nucleic Acids Res. Yang, L. et al. c, Effect of gene tree resolution on the quartet frequencies of the 535 MSC gene families. Proc. 24, 15861591 (2007). In contrast, when compared to the eudicot genomes of Vitis vinifera (Vitaceae), Acer yangbiense (Aceraceae), Tetracentron sinense (Trochodendraceae) and Aquilegia coerulea (Ranunculaceae) and the other magnoliid genomes of L. chinense, Magnolia biondii, C. kanehirae and Litsea cubeba, we found that Af6 has syntenic orthologous regions on two or more homoeologous chromosome sets in these species (Extended Data Fig. Heinrich, M., Chan, J., Wanke, S., Neinhuis, C. & Simmonds, M. S. Local uses of Aristolochia species and content of nephrotoxic aristolochic acid 1 and 2-a global assessment based on bibliographic sources. Li, L., Stoeckert, C. J. Jr. & Roos, D. S. OrthoMCL: identification of ortholog groups for eukaryotic genomes. To comprehensively analyse the phylogenetic position of magnoliids, we performed phylogenomic analyses using different datasets and approaches (Supplementary Table 4.1). Mol. 5c). 9, eaan6446 (2017). GeneWise84 and GeMoMa85 were used to annotate the gene models using alignments from amino acid sequence similarity against the A. fimbriata assembled sequences. For synteny analyses, we first performed all-against-all BALSTP (E-value<10-5 and score>100) within and between genomes. and L.Q. Sequencing of the 4-Mb mitochondrial genome of the angiosperm Amborella trichopoda has shown that it contains unprecedented amounts of foreign mitochondrial DNA, including four blocks of sequences that together correspond almost perfectly to one entire moss mitochondrial genome. The overall abundance of proteins involved in mitochondrial gene expression and translation and in the metabolism of lipids, amino acids and nucleotides is only mildly affected by different growth . Through intergenomic comparisons between the A. fimbriata genome and those of Amborella and N. colorata from the ANA grade, we found that regions of A. fimbriata chromosome 6 (Af6) are orthologous with segments of Amborella chromosomes 7 or 9 and N. colorata chromosomes 4 and 12 or chromosomes 2 and 9 (Supplementary Fig. Da, L. et al. 3.15 and 3.16). Google Scholar. Bioinformatics 31, i44i52 (2015). CAS Specht, C. D. & Howarth, D. G. Adaptation in flower form: a comparative evodevo approach. The numbers in the boxes are the TPM expression values for each gene at the pre-anthesis and anthesis stages. and C.W.dP. L.Q. An efficient algorithm for large-scale detection of protein families. Sexual reproduction is particularly complex in flowering plants (angiosperms). Recent studies have demonstrated that a class of nitrophenanthrene carboxylic acids, known as aristolochic acids (AAs), naturally produced by Aristolochia species are highly nephrotoxic and carcinogenic to humans28,29,30. CAS Aristolochia species usually have a highly specialized flower morphology23,24. The A. fimbriata genome may help to clarify early mesangiosperm diversification and the phylogenetic placement of magnoliids through analysis of the evolutionary history of genomic structural variations, as we demonstrate here. We further compared the A. fimbriata genome to those of representative magnoliid, eudicot and monocot species to determine whether or not the associated genomic rearrangements are shared by two or all three mesangiosperm clades. 14, R36 (2013). Branches of the maximum likelihood tree were coloured on the basis of the species colour scheme (on the right). 11, 16501667 (2016). Rueffer, M., Nagakura, N. & Zenk, M. H. Partial purification and properties of S-adenosylmethionine: (R), (S)-norlaudanosoline-6-O-methyltransferase from Argemone platyceras cell cultures. 27, 737746 (2017). Venn diagrams of the selected taxa were generated using InteractiVenn (http://www.interactivenn.net/). Keilwagen, J., Hartung, F. & Grau, J. GeMoMa: homology-based gene prediction utilizing intron position conservation and RNA-seq data. 99) and nucleotide sequences were then forced to fit the amino acid alignments using PAL2NAL v.14 (ref. Sci. Liriodendron genome sheds light on angiosperm phylogeny and species-pair differentiation. Lastly, we performed the Gaussian multipeak fitting of the curve by using the Gaussian approximation function (cftool) in MATLAB, and set the R-squared >95% which is a parameter to evaluate the fitting level. The chromosome-level wintersweet (Chimonanthus praecox) genome provides insights into floral scent biosynthesis and flowering in winter. 1, 100027 (2020). Biol. Cell 99, 367376 (1999). The concatenation-based inferences using the various datasets of amino acid sequences and protein-coding sequences, as well as the partitioned codons, from the 98 SSC and 535 MSC gene families consistently supported magnoliids and eudicots as sister lineages (T2; Supplementary Note 4.1, Fig. Wang, Y. et al. & Pichersky, E. The family of terpene synthases in plants: a mid-size family of genes for specialized metabolism that is highly diversified throughout the kingdom. 3.2 and 3.3), respectively, which strongly support the lack of further WGD in A. fimbriata since the earliest diversification of extant angiosperm lineages (Supplementary Note 3.1). While the expression levels of AfCYC are very low in all of the tissues examined, the three CIN genes (that is, AfCIN1, 2 and 3) show differential expression basipetally, with the highest expression being found in the limb region (Fig. For the Iso-seq data of mixed flower buds sequenced on PacBio Sequel II platform, the raw sequence data were processed by SMRT Link v.8.0 software (https://www.pacb.com/support/software-downloads/). A. 5.1 and Supplementary Table 5.2) and only one homologue for each of the eight classes of floral organ identity genes with high similarity to their corresponding orthologues in Amborella (Fig. Nat. d, Microsynteny comparisons clarified the timing of other previously reported WGDs in magnoliids. 4, e352 (2006). The images or other third party material in this article are included in the articles Creative Commons license, unless indicated otherwise in a credit line to the material. Results indicate that Amborella has acquired one or more copies of 20 of its 31 known mitochondrial protein genes from other land plants, for a total of 26 foreign genes, whereas no evidence for HGT was found in the five sequenced genomes. Best Travel Insurance For Italy,
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