The Experts below are selected from a list of 1074 Experts worldwide ranked by ideXlab platform
Chungyi Chen - One of the best experts on this subject based on the ideXlab platform.
-
a tetrahydrofuranol from the leaves of michelia compressa var lanyuensis Magnoliaceae
Natural Product Research, 2010Co-Authors: Chungyi ChenAbstract:Pressalanin A, a 2-functionalized tetrahydrofuranol, has been isolated from the leaves of Michelia compressa var. lanyuensis (Magnoliaceae), and the structure was determined on the basis of a spectroscopic analysis.
-
isolation of a new monoterpenic ester from the leaves of michelia compressa maxim sargent var formosana kanehira Magnoliaceae
Natural Product Research, 2010Co-Authors: Mingjen Cheng, Jincherng Huang, Yuting Yeh, Ziling Hong, Mingsung Chang, Chungyi ChenAbstract:Pressafonin A (1) and pressafonin B (2), two new Michelia monoterpenic esters, have been isolated from Michelia compressa (Maxim.) Sargent var. formosana Kanehira (Magnoliaceae), and their structures are determined on the basis of spectroscopic analysis.
-
isolation of new aristolactam and dioxoaporphine from the leaves of michelia compressa var lanyuensis Magnoliaceae
Natural Product Research, 2010Co-Authors: Jincherng Huang, Leeyu Huang, Chungyi ChenAbstract:Pressalanine A (1), a new Michelia aristolactam, and pressalanine B (2), a new Michelia dioxoaporphine, have been isolated from Michelia compressa var. lanyuensis (Magnoliaceae), and these structures were determined on the basis of spectroscopic analysis.
Hongwen Huang - One of the best experts on this subject based on the ideXlab platform.
-
isolation and characterization of microsatellite loci in tsoongiodendron odorum Magnoliaceae
American Journal of Botany, 2011Co-Authors: Jinghu Jiang, Jing Wang, Ming Kang, Wei Sun, Hongwen HuangAbstract:PREMISE OF THE STUDY Microsatellite loci were developed in Tsoongiodendron odorum, an endangered Magnoliaceae species in subtropical China, for further investigation of its conservation genetics. METHODS AND RESULTS Using the Fast Isolation by AFLP of Sequences Containing repeats (FIASCO) protocol, we isolated and characterized 12 microsatellite loci from T. odorum. Of the samples analyzed, eight were polymorphic and four were monomorphic. CONCLUSIONS These characterized markers will enable genetic diversity, gene flow, and mating system studies of T. odorum, which are highly valuable for formulating conservation strategies.
-
Ten polymorphic microsatellite markers in Michelia maudiae (Magnoliaceae)
American Journal of Botany, 2010Co-Authors: Ye Sun, Jing Wang, Yifei Liu, Yong Guo, Hongwen HuangAbstract: Premise of the study : Michelia maudiae is a threatened species in the Magnoliaceae. Microsatellite markers were developed and characterized in M. maudiae for further investigation of its conservation genetics. Methods and Results : Microsatellite markers were developed in M. maudiae using the Fast Isolation by AFLP of Sequences Containing Repeats protocol. Ten polymorphic microsatellites were assessed in two populations of M. maudiae . The number of alleles detected per locus varied from 1 to 8. Observed and expected heterozygosities ranged from 0.000 to 0.792 and from 0.000 to 0.826, respectively. Six primer pairs showed transferability in the two related species Michelia foveolata and Michelia chapensis . Conclusions : This set of microsatellite markers provides a useful tool for future studies of the conservation genetics of M. maudiae and other congeneric species.
-
characterization of 14 novel microsatellite loci in the endangered liriodendron chinense Magnoliaceae and cross species amplification in closely related taxa
Conservation Genetics, 2008Co-Authors: Jinju Zhang, Qigang Ye, Hongwen HuangAbstract:Fourteen polymorphic microsatellite loci were isolated and characterized from an AC-enriched genomic library of Liriodendron chinense (Magnoliaceae). The average allele number of these microsatellites was 5.2 per locus, ranging from three to eight. The observed and expected heterozygosity at population level were 0.07–1.00 and 0.10–0.83, respectively. These sets of microsatellites will be useful for studies of population genetic structure of L. chinense and L. tulipifera as well as to estimate fine-scale gene flow rates.
Sangtae Kim - One of the best experts on this subject based on the ideXlab platform.
-
complete chloroplast genome sequence of magnolia sinica y w law noot Magnoliaceae a critically endangered species with extremely small populations in Magnoliaceae
Mitochondrial DNA Part B, 2019Co-Authors: Eunji Song, Weibang Sun, Suhyeon Park, Sangtae KimAbstract:Magnolia sinica, distributed in Yunnan province of China, is a critically endangered (CR) species based on the IUCN Red List. Here we provide the complete chloroplast (cp) genome sequence of M. sin...
-
the chloroplast genome sequence of magnolia kobus dc Magnoliaceae
Mitochondrial DNA Part B, 2018Co-Authors: Eunji Song, Jongsun Park, Suhyeon Park, Sangtae KimAbstract:As an endangered species, Magnolia kobus is distributed in Jeju island in Korea with only about 500–1000 individuals. In this study, we presented a complete chloroplast genome of M. kobus which is 159,443 bp and has four sub-regions: 87,484 bp of large single copy and 18,783 bp of small single copy regions are separated by 26,588 bp of inverted repeat regions including 113 genes (79 unique genes, four rRNAs and 30 tRNAs). Phylogenetic analysis using chloroplast genomes showed that M. kobus is a sister of M. insignis and M. laevifolia clade.
-
Phylogeny of Magnoliaceae based on ten chloroplast DNA regions
Journal of Plant Biology, 2013Co-Authors: Sangtae Kim, Youngbae SuhAbstract:Phylogenetic analyses of ten chloroplast DNA regions, ndhF, rbcL, matK , ORF350, trnL intron, trnL-trnF, trnH-psbA, rbcL-atpB, trnK 5′ intron, and trnK 3′ intron (8,719 bp in aligned sequences) from 48 selected taxa were carried out to address phylogenetic questions in the family Magnoliaceae. The major clades in the molecular tree are considerably different from the currently suggested classification system and from the traditionally recognized subgroups in the family. Eleven major clades were recognized with strong support in the subfamily Magnolioideae: (1) MICHELIA clade: Michelia, Elmerrillia, sect. Maingola , sect. Alcimandra , and sect. Aromadendron , (2) YULANIA clade: subgen. Yulania , (3) GYNOPODIUM clade: Pachylarnax , sect. Manglietiastrum , and sect. Gynopodium , (4) KMERIA clade: Kmeria , (5) THEORHODON clade: sect. Theorhodon sensu stricto (excluding sect. Splendentes , which was recently separated from sect. Theorhodon ) and sect. Magnolia , (6) GWILLIMIA clade: sect. Gwillimia , sect. Lirianthe , and sect. Blumiana , (7) TALAUMA clade: sect. Talauma and sect. Splendentes , (8) MANGLIETIA clade: Manglietia , (9) RYTIDOSPERMUM clade: sect. Rytidospermum sensu stricto (excluding Magnolia fraseri, M. macrophylla , and M. dealbata ) and sect. Oyama , (10) FRASERI clade: M. fraseri , and (11) MACROPHYLLA clade: M. macrophylla and M. dealbata . The recognition of eleven major clades in the subfamily Magnolioideae in this study is in good agreement with previous molecular studies based on less sampling or fewer DNA regions. All of these eleven clades were highly supported with bootstrap values exceeding 80% in both maximum parsimony and maximum likelihood analyses and with posterior probabilities exceeding 0.98 in a Bayesian analysis. However, detailed relationships among the major clades were weakly supported. The molecular data suggest that the taxonomic circumscription of infrafamilial delimitations and compositions should be reconsidered.
-
phylogenetic relationships in family Magnoliaceae inferred from ndhf sequences
American Journal of Botany, 2001Co-Authors: Sangtae Kim, Chongwook Park, Youngdong Kim, Youngbae SuhAbstract:The ndhF sequences of 99 taxa, representing all sections in extant Magnoliaceae, were analyzed to address phylogenetic questions in the family. Magnolia macrophyllaand M. dealbata, North American species of Magnolia section Rytidospermum, are placed at the base in the subfamily Magnolioideae although its supporting value is low. In the remaining taxa, several distinctive lineages are recognized: (1) Magnolia, the biggest genus in the family, is not monophyletic; (2) Michelia, including section Maingola of Magnolia subgenus Magnolia, is closely related with Elmerrillia and sections Alcimandra and Aromadendron of Magnolia subgenus Magnolia; (3) the associates of Michelia are grouped with Magnolia subgenus Yulania and section Gynopodiumof Magnolia subgenus Magnolia; (4) Pachylarnax forms a clade with sections Manglietiastrum and Gynopodium of Magnolia; (5) a well-supported Manglietia clade is recognized; (6) Caribbean species of section Theorhodon of Magnolia subgenus Magnolia, which are section Splendentes sensu
Jin Zhang - One of the best experts on this subject based on the ideXlab platform.
-
liriodendron genome sheds light on angiosperm phylogeny and species pair differentiation
Nature plants, 2019Co-Authors: Jinhui Chen, Xiaofei Long, Xuanmin Guang, Haibin Xu, Pengkai Wang, Yu Sheng, Linfeng Yang, Yanwei Zhou, Chenxi Zhao, Jin ZhangAbstract:The genus Liriodendron belongs to the family Magnoliaceae, which resides within the magnoliids, an early diverging lineage of the Mesangiospermae. However, the phylogenetic relationship of magnoliids with eudicots and monocots has not been conclusively resolved and thus remains to be determined1–6. Liriodendron is a relict lineage from the Tertiary with two distinct species—one East Asian (L. chinense (Hemsley) Sargent) and one eastern North American (L. tulipifera Linn)—identified as a vicariad species pair. However, the genetic divergence and evolutionary trajectories of these species remain to be elucidated at the whole-genome level7. Here, we report the first de novo genome assembly of a plant in the Magnoliaceae, L. chinense. Phylogenetic analyses suggest that magnoliids are sister to the clade consisting of eudicots and monocots, with rapid diversification occurring in the common ancestor of these three lineages. Analyses of population genetic structure indicate that L. chinense has diverged into two lineages—the eastern and western groups—in China. While L. tulipifera in North America is genetically positioned between the two L. chinense groups, it is closer to the eastern group. This result is consistent with phenotypic observations that suggest that the eastern and western groups of China may have diverged long ago, possibly before the intercontinental differentiation between L. chinense and L. tulipifera. Genetic diversity analyses show that L. chinense has tenfold higher genetic diversity than L. tulipifera, suggesting that the complicated regions comprising east–west-orientated mountains and the Yangtze river basin (especially near 30° N latitude) in East Asia offered more successful refugia than the south–north-orientated mountain valleys in eastern North America during the Quaternary glacial period. A high-quality reference genome for the plant Liriodendron chinense places magnoliids as sister to the clade consisting of eudicots and monocots. Population genomic analyses unravel the evolution of two distinct species in the genus Liriodendron.
Jincherng Huang - One of the best experts on this subject based on the ideXlab platform.
-
isolation of a new monoterpenic ester from the leaves of michelia compressa maxim sargent var formosana kanehira Magnoliaceae
Natural Product Research, 2010Co-Authors: Mingjen Cheng, Jincherng Huang, Yuting Yeh, Ziling Hong, Mingsung Chang, Chungyi ChenAbstract:Pressafonin A (1) and pressafonin B (2), two new Michelia monoterpenic esters, have been isolated from Michelia compressa (Maxim.) Sargent var. formosana Kanehira (Magnoliaceae), and their structures are determined on the basis of spectroscopic analysis.
-
isolation of new aristolactam and dioxoaporphine from the leaves of michelia compressa var lanyuensis Magnoliaceae
Natural Product Research, 2010Co-Authors: Jincherng Huang, Leeyu Huang, Chungyi ChenAbstract:Pressalanine A (1), a new Michelia aristolactam, and pressalanine B (2), a new Michelia dioxoaporphine, have been isolated from Michelia compressa var. lanyuensis (Magnoliaceae), and these structures were determined on the basis of spectroscopic analysis.