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Yu Song - One of the best experts on this subject based on the ideXlab platform.
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The chloroplast genome of aromatic plants Cinnamomum burmanni (Lauraceae).
Mitochondrial DNA. Part B Resources, 2019Co-Authors: Yanping Yang, Yu Song, Peiyao XinAbstract:Cinnamomum burmanni (Nees et T. Nees) Blume is a valuable aromatic timber tree of the genus Cinnamomum Tree in the family Lauraceae. To better determine its phylogenetic location with respect to th...
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The plastid genome of a tropical tree Alseodaphne petiolaris (Lauraceae)
Mitochondrial DNA. Part B Resources, 2019Co-Authors: Rongjie Zhu, Yu Song, Guanfei Zhao, Yang Jie, Wang XilongAbstract:Alseodaphne petiolaris Hook.f. is a valuable timber tree of the genus Alseodaphne Nees in the family Lauraceae. To better determine its phylogenetic location with respect to the other Alseodaphne s...
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The plastid genome of a spice plants Cinnamomum glanduliferum in Tibet (Lauraceae).
Mitochondrial DNA. Part B Resources, 2019Co-Authors: Guanfei Zhao, Yu Song, Yang Jie, Wang Xilong, Rongjie ZhuAbstract:Cinnamomum glanduliferum (Wall) Meissn is a commercially important timber tree and wild spice plants of the genus Cinnamomum Trew in the family Lauraceae. To determine its phylogenetic location wit...
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The plastid genome of an oil plants Cinnamomum chago (Lauraceae)
Mitochondrial DNA Part B, 2019Co-Authors: Huanhuan Chen, Yu Song, Chao Liu, Li-hong Han, Lizhou TangAbstract:Cinnamomum chago B.S. Sun & H.L. Zhao is an economically important wild woody oil plant of the genus Cinnamomum Trew belonging the family Lauraceae. To better determine its phylogenetic location wi...
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Comparative chloroplast genomics and phylogenetics of nine Lindera species (Lauraceae)
Scientific reports, 2018Co-Authors: Mei-li Zhao, Yu Song, Xin Yao, Yun-hong TanAbstract:Lindera, a core genus of the Lauraceae family, has important economic uses in eastern Asia and North America. However, its historical diversification has not been clarified. In this study, we report nine newly sequenced Lindera plastomes. The plastomes of these nine Lindera species range from 152,211 (L. nacusua) to 152,968 bp (L. metcalfiana) in length, similar to that of another Lauraceae species, Litsea glutinosa (152,618 bp). The length variation of these plastomes derived from the length variation in the loci ycf1, ycf2, ψycf1, and ndhF-ψycf1. Comparing our sequences with other available plastomes in the Lauraceae indicated that eight hypervariable loci, ihbA-trnG, ndhA, ndhF-rpl32, petA-psbJ, psbK-psbI, rps16, trnS-trnG, and ycf1, could serve as DNA barcodes for species delineation, and that the inverted repeats (IRs) showed contraction/expansion. Further phylogenetic analyses were performed using 32 complete plastomes of Lauraceae and seven barcodes from 14 additional species of Lindera and related species in the core Lauraceae. The results showed that these Lindera species grouped into two or four sub-clades, and that two Litsea species and Laurus nobilis were located in the same sub-clade as five Lindera species. These data support a close relationship between the genera Laurus, Lindera, and Litsea, and suggest that Lindera is polyphyletic.
Meena Haribal - One of the best experts on this subject based on the ideXlab platform.
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An Oviposition Stimulant for Spicebush Swallowtail Butterfly, Papilio troilus, from Leaves of Sassafras albidum
Journal of Chemical Ecology, 1999Co-Authors: Maureen Carter, Paul Feeny, Meena HaribalAbstract:Female butterflies of the spicebush swallowtail, Papilio troilus , are specialists, ovipositing on plants in the family Lauraceae. Column chromatography and HPLC were used to isolate an oviposition stimulant from the leaves of one of its hosts, Sassafras albidum. The stimulant was identified as 3- trans -caffeoyl-muco-quinic acid on the basis of FAB-MS and ^1H NMR spectra as compared to a compound previously isolated from another plant. It was not active alone, but it increased the oviposition activity of butterflies when combined with other stimulant(s) at a concentration of 7 ng/mm^2 leaf surface area. Other caffeoylquinic acid isomers tested did not have this effect. This is the first report of a swallowtail contact oviposition stimulant from a plant in the family Lauraceae.
Maureen Carter - One of the best experts on this subject based on the ideXlab platform.
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An Oviposition Stimulant for Spicebush Swallowtail Butterfly, Papilio troilus, from Leaves of Sassafras albidum
Journal of Chemical Ecology, 1999Co-Authors: Maureen Carter, Paul Feeny, Meena HaribalAbstract:Female butterflies of the spicebush swallowtail, Papilio troilus , are specialists, ovipositing on plants in the family Lauraceae. Column chromatography and HPLC were used to isolate an oviposition stimulant from the leaves of one of its hosts, Sassafras albidum. The stimulant was identified as 3- trans -caffeoyl-muco-quinic acid on the basis of FAB-MS and ^1H NMR spectra as compared to a compound previously isolated from another plant. It was not active alone, but it increased the oviposition activity of butterflies when combined with other stimulant(s) at a concentration of 7 ng/mm^2 leaf surface area. Other caffeoylquinic acid isomers tested did not have this effect. This is the first report of a swallowtail contact oviposition stimulant from a plant in the family Lauraceae.
Yun-hong Tan - One of the best experts on this subject based on the ideXlab platform.
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Comparative chloroplast genomics and phylogenetics of nine Lindera species (Lauraceae)
Scientific reports, 2018Co-Authors: Mei-li Zhao, Yu Song, Xin Yao, Yun-hong TanAbstract:Lindera, a core genus of the Lauraceae family, has important economic uses in eastern Asia and North America. However, its historical diversification has not been clarified. In this study, we report nine newly sequenced Lindera plastomes. The plastomes of these nine Lindera species range from 152,211 (L. nacusua) to 152,968 bp (L. metcalfiana) in length, similar to that of another Lauraceae species, Litsea glutinosa (152,618 bp). The length variation of these plastomes derived from the length variation in the loci ycf1, ycf2, ψycf1, and ndhF-ψycf1. Comparing our sequences with other available plastomes in the Lauraceae indicated that eight hypervariable loci, ihbA-trnG, ndhA, ndhF-rpl32, petA-psbJ, psbK-psbI, rps16, trnS-trnG, and ycf1, could serve as DNA barcodes for species delineation, and that the inverted repeats (IRs) showed contraction/expansion. Further phylogenetic analyses were performed using 32 complete plastomes of Lauraceae and seven barcodes from 14 additional species of Lindera and related species in the core Lauraceae. The results showed that these Lindera species grouped into two or four sub-clades, and that two Litsea species and Laurus nobilis were located in the same sub-clade as five Lindera species. These data support a close relationship between the genera Laurus, Lindera, and Litsea, and suggest that Lindera is polyphyletic.
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Complete plastid genome sequences of three tropical Alseodaphne trees in the family Lauraceae
Holzforschung, 2018Co-Authors: Yu Song, Xin Yao, Yun-hong Tan, Bing Liu, Richard T. CorlettAbstract:AbstractAlseodaphneis a genus of timber trees (ca. 40 spp.) belonging to thePerseagroup of the Lauraceae. It is widely distributed in tropical Asia, but is often confused withDehaasiaandNothaphoebe, and the systematics of the genus is unclear. Here, the complete chloroplast genome sequences ofA. semecarpifoliawill be reported, the type species ofAlseodaphne, and two China-endemic species,A. gracilisandA. huanglianshanensis. The three plastomes were 153 051 bp, 153 099 bp and 153 070 bp, respectively. Comparative genomic analyses indicate that the threeAlseodaphneplastomes have similar genome size and those are very different with previously published plastomes of Lauraceae in length. The length difference is directly caused by inverted repeats expansion/contraction. Four highly variable loci includingpsbD-trnM,ndhF-rpl32,rpl32-trnLandycf1among the threeAlseodaphnespecies were identified as useful plastid candidate barcodes forAlseodaphneand Lauraceae species. Phylogenetic analyses based on 12 complete plastomes of Lauraceae species confirm a monophyleticPerseagroup comprising species ofAlseodaphne,Phoebe,PerseaandMachilus.
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Evolutionary Comparisons of the Chloroplast Genome in Lauraceae and Insights into Loss Events in the Magnoliids.
Genome biology and evolution, 2017Co-Authors: Yu Song, Xin Yao, Yun-hong Tan, Bing Liu, Jian-jun Jin, Michael Padmanaba, Jun-bo Yang, Richard T. CorlettAbstract:Available plastomes of the Lauraceae show similar structure and varied size, but there has been no systematic comparison across the family. In order to understand the variation in plastome size and structure in the Lauraceae and related families of magnoliids, we here compare 47 plastomes, 15 newly sequenced, from 27 representative genera. We reveal that the two shortest plastomes are in the parasitic Lauraceae genus Cassytha, with lengths of 114,623 (C. filiformis) and 114,963 bp (C. capillaris), and that they have lost NADH dehydrogenase (ndh) genes in the large single-copy region and one entire copy of the inverted repeat (IR) region. The plastomes of the core Lauraceae group, with lengths from 150,749 bp (Nectandra angustifolia) to 152,739 bp (Actinodaphne trichocarpa), have lost trnI-CAU, rpl23, rpl2, a fragment of ycf2, and their intergenic regions in IRb region, whereas the plastomes of the basal Lauraceae group, with lengths from 157,577 bp (Eusideroxylon zwageri) to 158,530 bp (Beilschmiedia tungfangensis), have lost rpl2 in IRa region. The plastomes of Calycanthus (Calycanthaceae, Laurales) have lost rpl2 in IRb region, but the plastome of Caryodaphnopsis henryi (Lauraceae) remain intact, as do those of the nonLaurales magnoliid genera Piper, Liriodendron, and Magnolia. On the basis of our phylogenetic analysis and structural comparisons, different loss events occurred in different lineages of the Laurales, and fragment loss events in the IR regions have largely driven the contraction of the plastome in the Lauraceae. These results provide new insights into the evolution of the Lauraceae as well as the magnoliids as a whole.
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complete chloroplast genome sequence of the avocado gene organization comparative analysis and phylogenetic relationships with other Lauraceae
Canadian Journal of Forest Research, 2016Co-Authors: Yu Song, Xin Yao, Yun-hong Tan, Yi Gan, Richard T. CorlettAbstract:The complete chloroplast sequence of the avocado (Persea americana Mill.), a popular tropical fruit tree, was determined in this study. The plastome consists of 152 723 bp, with a typical circular structure including inverted repeats (IRs) 40 104 bp in length separated by a large single-copy region (LSC) and a small single-copy region (SSC) of 93 795 bp and 18 824 bp, respectively. Potential mutation sites, including 61 repeats and 679 simple sequence repeats, were accurately located in the avocado plastome. Compared with the plastomes of five other related Lauraceae, 25 highly variable regions and six micro-inversions were identified, and the contraction event of the IR regions was observed. However, the plastomes of Lauraceae are extremely evolutionarily conservative, with only 0.32% sequence divergence, which is surprisingly low for angiosperms. Further phylogenetic analyses were conducted using eight complete plastomes of Lauraceae and seven barcoding sequences from 23 Persea species. These data suppo...
George Poinar - One of the best experts on this subject based on the ideXlab platform.
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A mid-Cretaceous Lauraceae flower, Cascolaurus burmitis gen. et sp. nov., in Myanmar amber
Cretaceous Research, 2017Co-Authors: George PoinarAbstract:Abstract An actinomorphic staminate flower in mid-Cretaceous Myanmar amber is described as Cascolaurus burmitis gen. et sp. nov. in the family Lauraceae. The fossil most closely resembles extant unisexual flowers of the genus Litsea Lam. in the Tribe Laureae, however the size difference of the two whorls of perianth members, 3 whorls of tetrasporangiate anthers with apical valves arranged in 2 rows with introse dehiscence in whorls 1 and 2 and extrose dehiscence in whorl 3, plus the extremely large staminal glands, distinguish the fossil from extinct and extant genera of Lauraceae. Cascolaurus burmitis gen. et sp. nov. is the first Cretaceous Lauraceae flower in amber and the best preserved of all known Cretaceous flowers of that family.