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Sri Atun - One of the best experts on this subject based on the ideXlab platform.

  • STRUCTURE IDENTIFICATION OF A TRIMER STILBENOID COMPOUND FROM STEM BARK Hopea nigra (Dipterocarpaceae)
    Indonesian Journal of Chemistry, 2010
    Co-Authors: Sri Atun, Nurfina Aznama, Retno Arianingrum, Masatake Niwab
    Abstract:

    Bioactivity as antihephatotoxic directed fractionation of aceton extract from the stem bark of Hopea nigra (Dipterocarpaceae) afforded a stilbenoid trimer, namely vaticanol G (1). The structure of this compound were elucidated based on physical and spectroscopic data (UV, IR, MS, 1 H and 13 C NMR 1D and 2D). Keywords: Vaticanol G; Hopea nigra; antihepatotoxic; Dipterocarpaceae.

  • BALANOCARPOL AND AMPELOPSIN H, TWO OLIGORESVERATROLS FROM STEM BARK OF Hopea odorata (Dipterocarpaceae)
    Indonesian Journal of Chemistry, 2010
    Co-Authors: Sri Atun, Retno Arianingrum, Nurfina Aznam, Masatake Niwa
    Abstract:

    Two oligoresveratrol, namely balanokarpol (1) and ampelopsin H (2) had been isolated from the steam bark of Hopea odorata (Dipterocarpaceae). The structure of this compound were elucidated based on physical and spectroscopic data (MS, 1H and 13C NMR 1D and 2D). The activity of these compounds was evaluated against the 2-deoxyribose degradation induced by the hydroxyl radical generated via a Fenton-type reaction. The result of this study showed that activity each compounds as radical hydroxyl scavenger of balanocarpol, and ampelopsin H with an IC50 1802,3 and 4840,0 g/ml. respectively. Each compound showed low activity. Vitamin C (IC50 83,9 g/ml) and butylated hydroxyl toluene (1328,0 g/ml) used as positif control. These results suggest that oligoresveratrols from stem bark of H. odorata may be useful as potential sources of natural antioxidants. Keyword: balanocarpol; ampelopsin H; antioxidant; Dipterocarpaceae FMIPA, 2006 (PEND. KIMIA)

  • SEPARATION AND ELEMENTATION OF DIMER STILBENOID STRUCTURE OF VATICA LIGHT STEEL UMBONATA BURCK (Dipterocarpaceae)
    2007
    Co-Authors: Sri Atun
    Abstract:

    Three oligostilbenoid, namely (-)-ampelopsin F (1), laevifonol (2), and e-viniferin (3) had been isolated and elucidated these structure from the stem bark of  Vatica umbonata Burck (Dipterocarpaceae). The structure of three compounds were elucidated based on physical and spectroscopic data UV,JR,  IH and HCNMR, HMBC, HMQC, COSY, andNOESY.

  • Activity of Oligoresveratrols from Stem Bark of Hopea mengarawan (Dipterocarpaceae) as Hydroxyl Radical Scavenger
    Hayati Journal of Biosciences, 2006
    Co-Authors: Sri Atun
    Abstract:

    Four oligoresveratrols ranging from dimer to tetramer, isolated from stem bark of Hopea mengarawan (Dipterocarpaceae) plants were tested for their activity as hydroxyl radical scavenger. The activity of these compounds was evaluated against the 2-deoxyribose degradation induced by the hydroxyl radical generated via a Fenton-type reaction. Result showed that balanocarpol, heimiol A, vaticanol G, and vaticanol B had IC 50 3.83; 15.44; 2.01; and 4.71 uM, respectively. These results suggest that oligoresveratrols from stem bark of H. mengarawan maybe useful as potential sources of natural antioxidants. Key words: Oligoresveratrol, Hopea mengarawan

  • Oligostilbenoids from Vatica umbonata (Dipterocarpaceae)
    Biochemical Systematics and Ecology, 2004
    Co-Authors: Sri Atun, Sjamsul Arifin Achmad, Euis H. Hakim, Emilio L. Ghisalberti, Lukman Makmur, Yana M. Syah
    Abstract:

    Vatica is a relatively large genus belonging to the family Dipterocarpaceae and is distributed mainly in Southeast Asia (Symington, 1974). This genus, as well as other dipterocarp genera such as Shorea, Hopea, and Vateria, have proven to be a rich source of oligostilbene compounds derived from a stilbene, resveratrol (4,30,50trihydroxystilbene) (Sotheeswaran and Pasupathy, 1993; Hakim, 2002; Zgoda-Pols et al., 2002; Ito et al., 2003a,b). As part of a systematic study on the chemistry of the Indonesian dipterocarps (Aminah et al., 2002; Syah et al., 2003), we had collected samples of the tree barks of Vatica umbonata Burck. in September 2000 from the Experimental Garden of Kaliurang, Yogyakarta, Indonesia. The plant was identified by the staff at the Herbarium Bogoriense, Bogor, Indonesia, and a voucher specimen (KOBA-DIPTO-DIY01) was deposited at the Herbarium Bandungense, Department of Biology, Institut Teknologi Bandung, Indonesia.

Leho Tedersoo - One of the best experts on this subject based on the ideXlab platform.

  • Diversity and community composition of ectomycorrhizal fungi in a dry deciduous dipterocarp forest in Thailand
    Biodiversity and Conservation, 2012
    Co-Authors: Cherdchai Phosri, Sergei Põlme, Andy F. S. Taylor, Urmas Kõljalg, Nuttika Suwannasai, Leho Tedersoo
    Abstract:

    Large forest areas of South-East Asia, are dominated by the Dipterocarpaceae tree family, which contains many important timber species. Unlike many other tropical trees, Dipterocarpaceae rely on ectomycorrhizal (ECM) root symbiosis for their mineral nutrition. This study aims to document the richness and community composition of ECM fungi in a dry deciduous forest in Thailand. Combining morphological and molecular identification methods revealed 69 species of ECM fungi that belong to 17 phylogenetic lineages. The /russula-lactarius, /tomentella-thelephora, /sordariales, /sebacina and /cantharellus lineages were the most species-rich. The fungal richness is comparable to other tropical rain forest sites, but the phylogenetic community structure has elements of both tropical and temperate ecosystems. Unlike tropical rain forests, the Cenococcum geophilum complex was one of the most frequent fungal taxa that had a relatively high ITS genetic diversity over the small sampling area. This study provides the first snapshot insight into the fungal community of dry dipterocarp forests. However, it is necessary to broaden the spatial and temporal scales of sampling to improve our understanding of the below-ground relations of dry and humid tropical forests.

  • Ectomycorrhizas of Coltricia and Coltriciella (Hymenochaetales, Basidiomycota) on Caesalpiniaceae, Dipterocarpaceae and Myrtaceae in Seychelles
    Mycological Progress, 2007
    Co-Authors: Leho Tedersoo, Triin Suvi, Katy Beaver, Irja Saar
    Abstract:

    Ectomycorrhizal fungi, especially basidiomycetes, have repeatedly evolved from saprotrophic ancestors. Using rDNA internal transcribed spacer and large subunit sequences, we demonstrate that four species of Coltricia and Coltriciella form ectomycorrhiza with the native Vateriopsis seychellarum (Dipterocarpaceae) and Intsia bijuga (Caesalpiniaceae) as well as the introduced Eucalyptus robusta (Myrtaceae) in Seychelles. Coltricia and Coltriciella species share a thin, orange-brown to dark brown mantle and extremely thick, clampless hyphae. Phylogenetic analyses placed Coltriciella monophyletic within Coltricia . This study provides further evidence that fruiting habit on dead wood does not indicate saprotrophic lifestyle.

  • Ectomycorrhizas of Coltricia and Coltriciella (Hymenochaetales, Basidiomycota) on Caesalpiniaceae, Dipterocarpaceae and Myrtaceae in Seychelles
    Mycological Progress, 2007
    Co-Authors: Leho Tedersoo, Triin Suvi, Katy Beaver, Irja Saar
    Abstract:

    Ectomycorrhizal fungi, especially basidiomycetes, have repeatedly evolved from saprotrophic ancestors. Using rDNA internal transcribed spacer and large subunit sequences, we demonstrate that four species of Coltricia and Coltriciella form ectomycorrhiza with the native Vateriopsis seychellarum (Dipterocarpaceae) and Intsia bijuga (Caesalpiniaceae) as well as the introduced Eucalyptus robusta (Myrtaceae) in Seychelles. Coltricia and Coltriciella species share a thin, orange-brown to dark brown mantle and extremely thick, clampless hyphae. Phylogenetic analyses placed Coltriciella monophyletic within Coltricia. This study provides further evidence that fruiting habit on dead wood does not indicate saprotrophic lifestyle.

Yoshihiko Tsumura - One of the best experts on this subject based on the ideXlab platform.

  • Twenty-four additional microsatellite markers derived from expressed sequence tags of the endangered tropical tree Shorea leprosula (Dipterocarpaceae)
    Conservation Genetics Resources, 2011
    Co-Authors: Masato Ohtani, Saneyoshi Ueno, Naoki Tani, Leong Soon Lee, Yoshihiko Tsumura
    Abstract:

    We developed microsatellite markers from newly isolated expressed sequence tags of an endangered tropical tree species, Shorea leprosula (Dipterocarpaceae). Twenty-four loci exhibited clear, polymorphic amplification patterns among 52 individuals from a population in Indonesia, with two to 16 alleles per locus. No locus showed significant departure from Hardy–Weinberg equilibrium, and no significant genotypic disequilibrium was detected for any pair of loci after sequential Bonferroni correction.

  • Characterization of 15 polymorphic microsatellite loci in an endangered tropical tree Hopea bilitonensis (Dipterocarpaceae) in Peninsular Malaysia
    Molecular Ecology Notes, 2004
    Co-Authors: Soon Leong Lee, Naoki Tani, Yoshihiko Tsumura
    Abstract:

    This study reports the isolation and characterization of 15 polymorphic microsatellite loci in an endangered tropical tree Hopea bilitonensis (Dipterocarpaceae). The primers were designed from a genomic library enriched for dinucleotide (CT) repeats and screened on 24 adult trees from a natural population. The number of alleles ranged from two to eight, and the observed heterozygosity ranged from 0.042 to 1.000. These loci will allow mating system and population analyses to be carried out in this species.

  • Molecular Phylogeny of Dipterocarpaceae
    Pasoh, 2003
    Co-Authors: Tadashi Kajita, Yoshihiko Tsumura
    Abstract:

    The Dipterocarpaceae is distributed mainly in Southeast Asia and its species represent a major canopy component in tropical forests. In Southeast Asia’s tropical rain forests in paticular, the Dipterocarpaceae is one of the region’s most ecologically and economically significant tree families. The family displays extreme species richness in many tropical rain forests, including Pasoh Forest Reserve (Pasoh FR) — one of key tropical field ecological centres in the world. Dipterocarp species are abundant in the reserve and consequently represent major target species for the studies in this forest. In this paper, recent progress in molecular phylogenetics of Dipterocarpaceae is reviewed, with reference to representatives of all the genera found in the Pasoh FR. A familial relationship of Dipterocarpaceae, Sarcolaenaceae and Cistaceae was re-analyzed using maximum parsimony, neighbor joining, and maximum likelihood methods. A hypothetical phylogenetic tree of genera of Dipterocarpaceae combining all the published phylogenetic relationships is proposed.

  • Development and polymorphism of simple sequence repeat DNA markers for Shorea curtisii and other Dipterocarpaceae species.
    Heredity, 1998
    Co-Authors: Tokuko Ujino, Yoshihiko Tsumura, Takayuki Kawahara, Teruyoshi Nagamitsu, Hiroshi Yoshimaru, R Wickneswari V Ratnam
    Abstract:

    Nine simple sequence repeat (SSR) markers were developed from Shorea curtisii using two different methods. One SSR locus was isolated by the commonly used method of screening by colony hybridization, and the other eight loci were isolated by a vectorette PCR method. Primer pairs were designed based on the sequences of all these SSR loci. Analysis of 40 individuals of S. curtisii from natural forest in Malaysia revealed that all SSR loci were polymorphic. Four SSR markers, Shc01, Shc04, Shc07 and Shc09, were highly polymorphic. We have also tested the applicability of these SSR printers to other species of Dipterocarpaceae using PCR amplification. Because the flanking region sequences of the S. curtisii SSRs were well conserved within this family, the SSR primers for S. curtisii can be applied to almost all species of Dipterocarpaceae.

  • Molecular phylogeny of Dipterocarpaceae in Southeast Asia using RFLP of PCR-amplified chloroplast genes.
    TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 1996
    Co-Authors: Yoshihiko Tsumura, T Kawahara, R Wickneswari, K Yoshimura
    Abstract:

    Dipterocarpaceae is the dominant family of Southeast Asia's climax tropical rain forest region, and it contains the region's most important commercial timber species. A molecular phylogeny of the Dipterocarpaceae subfamily Dipterocapoideae was constructed using restriction fragment length polymorphisms of polymerase chain reaction-amplified specific genes in chloroplast DNA. A total of 141 site changes were detected among ten genera and 30 species in 11 different genes: rbcL, psbA, psbD, rpoB, rpoC, petB, atpH, 16S, psaA, petA and trnK. Phylogenetic trees constructed by Wanger parsimony and neighbor-joining methods, using Upuna as the outgroup, displayed five monophytelic groups that included Upuna: HopeaShorea-Parashorea-Neobalanocarpus; Dryobalanops; Dipterocarpus; Anisoptera-Vatica-Cotylelobium; and Upuna. The phylogenetic trees clearly separate species with two different base chromosome numbers: the first group is x=7, and the other is x=11. The x=7 group is thought to be in a synapomorphic character state. Parashorea lucida is a sister to most Shorea species. Neobalanocarpus heimii and Hopea from a clade of a sister to two Shorea species, and Cotylelobium and Vatica are closely related species. Our conclusions agree with a phylogeny derived from wood anatomy data analysis, and with Symington's and Ashton's taxonomic classifications.

Essy Harnelly - One of the best experts on this subject based on the ideXlab platform.

  • POPULATION STRUCTURE OF Dipterocarpaceae SPECIES IN KETAMBE RESEARCH STATION, GUNUNG LEUSER NATIONAL PARK, ACEH TENGGARA
    Jurnal Natural, 2019
    Co-Authors: Rizki Amelia, Saida Rasnovi, Essy Harnelly
    Abstract:

    Ketambe Research Station is one of the oldest and most complete stations in the world which has abundant biodiversity. The Dipterocarpaceae is one of the family identified as growing in the forest area of Ketambe Research Station. Ecologically, Dipterocarpaceae has several limiting factors for its growth and distribution and the most determining factors are soil factors and climate. Dipterocarpaceae is also known as nest and source of food for orangutans, namely Shorea spp. Therefore, it is necessary to conduct research that aims to determine the population structure of Dipterocarpaceae species in Ketambe Research Station. The method used Quadrat Sampling Technique. Theplacement of the sampling plot was randomly carried out in 25 plots with an area of 1 ha. The result showed that there were three species of Dipterocarapaceae found in this station i.e., Parashorea lucida, Shore a johorensis and Hopea dryobalanoides . Based on the population structure pyramid, P. lucida will survive and develop in the future S. johorensis and H. dryobalanoides , on the other hand, are estimated to decrease or hardly survived in the future.

  • Phylogenetic analysis of Dipterocarpaceae in Ketambe Research Station, Gunung Leuser National Park (Sumatra, Indonesia) based on rbcL and matK genes
    Biodiversitas Journal of Biological Diversity, 2018
    Co-Authors: Essy Harnelly, Zairin Thomy, Nir Fathiya
    Abstract:

    Harnelly E, Thomy Z, Fathiya N. 2018. Phylogenetic analysis of Dipterocarpaceae in Ketambe Research Station, GunungLeuser National Park (Sumatra, Indonesia) based on rbcL and matK genes. Biodiversitas 19: 1074-1080. Gunung Leuser National Parkhas several Research Stations. Ketambe is one of the Research Stations which is located in Aceh Tenggara district, Aceh province. Oneof the timber plants family which is abundant in Leuser Mountain is Dipterocarpaceae. However, the data of species and relationship ofDipterocarpaceae in Ketambe Research Station is lack and not available. The aim of the study is to analyze the phylogenetic ofDipterocarpaceae based on rbcL and matK gene in Ketambe Research Station. This research was carried out from July 2015 to August2016 in Ketambe Research Station and Forestry and Forest Genetics Laboratory of Molecular, Bogor Agricultural University. Themethod used quadrat sampling technique with purposive sampling and experimental laboratory consisting of DNA extraction, PCR,electrophoresis, and sequencing. The data analysis was done using BioEdit and MEGA6. The results showed that based onmorphological identification, there were five Dipterocarpaceae species found namely; Parashorea lucida, Shorea parvifolia, Shorealepidota, Shorea johorensis, and Hopea dryobalanoides. The phylogenetic tree based on rbcL gene showed that there were twomonophyletic groups, the first group was S. johorensis, S. lepidota, and H. dryobalanoides; and the second group consisted of S.parvifolia and P. lucida. The phylogenetic tree reconstruction based on matK gene showed that Shorea parvifolia and S. johorensis wereseparated in two different monophyletic groups.

  • Phylogenetic Analysis of Dipterocarpaceae Using Neighborjoining Algorithm
    2014
    Co-Authors: Ulfi Maulida, Muhammad Subianto, Essy Harnelly
    Abstract:

    Abstract. Phylogenetic analysis of family Dipteriocarpaceae using neighbor joining algorithm is aimed to analyze genetic relationship of some species of family Dipterocarpaceae and comparing analysis results based on bootstrap value and time spent to construct phylogenetic tree using substitute of Jukes and Cantor method and type of Kimura model. As for analysis step is consist of data collection, modification of sequence name structure, sequence collimation, construction of tree, evaluation of tree and analysis of tree. Analysis results of genetic relationship of both mpdels of substitution shows that phylogenetic tree resulted is identic where, genus Dipterocarpus is not to forming group monophyletic with other genus from tribe Dipterocarpaceae time required to construction is not indicated a significant difference. Keywords : Phylogenetic, neighbor-joining, Jukes and Cantor, Kimura.

Terry W. Henkel - One of the best experts on this subject based on the ideXlab platform.

  • new species of elaphomyces elaphomycetaceae eurotiales ascomycota from tropical rainforests of cameroon and guyana
    IMA Fungus, 2016
    Co-Authors: Michael A Castellano, Todd F. Elliott, Camille Truong, Olivier Séné, Bryn T M Dentinger, Terry W. Henkel
    Abstract:

    The sequestrate false truffles Elaphomyces favosus, E. iuppitercellus, and E. labyrinthinus spp. nov. are described as new to science from the Dja Biosphere Reserve, Cameroon. Elaphomyces adamizans sp. nov. is described as new from the Pakaraima Mountains of Guyana. The Cameroonian species are the first Elaphomyces taxa to be formally described from Africa, occurring in lowland Guineo-Congolian tropical rainforests dominated by the ectomycorrhizal (ECM) canopy tree Gilbertiodendron dewevrei (Fabaceae subfam. Caesalpinioideae). The Guyanese species is the third to be discovered in lowland tropical South America, occurring in forests dominated by the ECM trees Pakaraimaea dipterocarpacea (Dipterocarpaceae) and Dicymbe jenmanii (Fabaceae subfam. Caesalpinioideae). Macromorphological, micromorphological, habitat, and DNA sequence data are provided for each new species. Molecular and morphological data place these fungi in Elaphomycetaceae (Eurotiales, Ascomycota). Unique morphological features are congruent with molecular delimitation of each of the new species based on a phylogenetic analysis of the rDNA ITS and 28S loci across the Elaphomycetaceae. The phylogenetic analysis also suggests that a common ancestor is shared between some Elaphomyces species from Africa and South America, and that species of the stalked, volvate genus Pseudotulostoma may be nested in Elaphomyces.