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  • Botany 2010 - Abstract Search
    given to native species in areas where malaria has been eradicated The aim of this study was to evaluate botanical remedies reportedly used to treat malaria by the Confederate Army during the American Civil War when malaria was a widespread concern in the USA particularly the South Plant material from ten target species Lindera benzoin L Blume Ilex verticillata L A Gray Ilex opaca Aiton Thuja occidentalis L Castanea dentata Marshall Borkh Magnolia acuminata L L Magnolia grandiflora L Magnolia tripetala L L Chionanthus virginicus L and Polygonum aviculare L was prepared by alcoholic ethanol extraction in coordination with the traditional preparations of the time period Extracts were submitted for in vitro antiplasmodial and cytotoxic evaluation Our results indicate two species M tripetala and T occidentalis possess moderate antiplasmodial activity with IC 50 values Broader Impacts This research will help preserve the ethnobotanical heritage of North American plants with historical importance as antimalarials Furthermore the scientific evaluation of the antimalarial characteristics of these traditional medicines will serve as verification or repudiation of their efficacy This work also sets the stage for future research focused on the isolation and characterization of potentially novel and potent antimalarial compounds which may in turn

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=detail&aid=456 (2016-02-01)
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  • Botany 2010 - Abstract Search
    the five fractions of the extracts showed a fluctuation from 0 to 1 18 at 400 to 950 wavelength The anti microbial activities of the crude extracts were tested against some selected species of bacteria and fungi thus the test extract was found to have significant inhibitory effect 17mm as indicated by zones of inhibition on Bacillus substilis Pseudomonas aeruginosa Staphylococus aureus Shigella dysenterae Aspergillus niger Aspergillus flavus and Rhizopus

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=detail&aid=60 (2016-02-01)
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  • Botany 2010 - Abstract Search
    of Stemonuraceae Stemonuraceae is well supported 100 bootstrap value as a clade and shares a 100 bp TA repeat region in the trn L F spacer a synapomorphy not found in Ilex or any other taxon Two clades within Gomphandra were moderately supported Members of one clade have axillary inflorescences while those in the other clade have terminal inflorescences Current taxon sampling suggests the terminal inflorescence position is derived with respect to the outgroup Eight of the ten taxa included in the analysis are from the Philippines All five members of the terminal clade are Philippine but the axillary clade includes one Indonesian and one Australian species Philippine G mappioides is sister to Indonesian G javanica while other Philippine species in the clade form a polytomy with the mappioides javanica pair G mappioides which also occurs in Indonesia is morphologically similar to both G javanica and an endemic Philippine species but the analysis indicates that similarities in morphology do not necessarily reflect the geographic proximity of taxa In other words taxa with similar morphologies from different regions may be more closely related to each other than to taxa with similar morphologies from the same region As more taxa are added

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=detail&aid=394 (2016-02-01)
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  • Botany 2010 - Abstract Search
    group in the subfamily Melastomatoideae that contain species from both the New and Old World However many Neotropical taxa were not sampled thus the relationships among genera of New World Melastomeae have remained problematic For this study we sampled 28 genera of New World Melastomeae with only four monotypic and poorly collected genera missing as well as representatives of Old World Melastomeae and members of the Microlicieae that were used as outgroups In total over 150 species were sequenced for nrITS and the plastid spacers accD psaI and psbKL New World Melastomeae are not resolved as monophyletic as a group of Old World genera Osbeckia Melastoma Tristemma and allied genera are resolved nested within it Sister to this Old World clade we recover a clade that contains the large genus Tibouchina with over 250 described species with at least 13 other Neotropical genera Moreover Tibouchina is not recovered as monophyletic because Brachyotum Heterocentron Itatiaia Microlepis Svitramia and Tibouchinopsis are nested within it even though all of these genera are recovered as monophyletic or nearly so Many of the previously recognized sections of Tibouchina are recovered as monophyletic or paraphyletic Pachyloma is recovered in a clade with Rhexia and Arthrostemma as

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=detail&aid=252 (2016-02-01)
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  • Botany 2010 - Abstract Search
    Author s Institutions Abstract Title Abstract Keywords Program Schedule Programs At A Glance Detailed Programs Custom Schedule Sessions Date Time Locations or Search Botany 2010 Home Login Send Email Message From Name From Email To Paulo J F Guimaraes Subject Message Please type in the 5 characters between 0 and 9 and between A and F shown above and submit the form What is this for If the characters are

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=contactbyemail&id=15276 (2016-02-01)
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  • Botany 2010 - Abstract Search
    species occur outside this region 18 in eastern Africa 8 in Australasia 2 in Madagascar 2 in Turkey and one each on islands of St Helena and Tristan de Cunha Previous studies have addressed the phylogeny of Pelargonium using plastid trn L F mitochondrion nad 1 and nuclear ITS markers but overlap in taxon sampling was limited with only 21 species represented by all 3 DNA regions Although three major and two minor clades were resolved within the genus these studies were very limited in taxon sampling In order to test the monophyly of previously identified major clades and to further resolve relationships among closely related species within Pelargonium expanded taxon sampling was performed for three chloroplast protein coding genes rbc L mat K and ndh F Phylogenies for 61 species of Pelargonium and 7 outgroups from Geraniales using DNA sequences of these three genes show sufficient variation to resolve phylogenetic relationships Phylogenetic analyses using maximum parsimony maximum likelihood and Bayesian inference provide strong support for the monophyly of most of the clades identified in previous studies i e clades A2 B C1 and C2 The one exception is clade A2 which is polytomy within the A clade In addition

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=detail&aid=175 (2016-02-01)
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  • Botany 2010 - Abstract Search
    variable across the phylogeny Differences in growth form and leaf shape have functional consequences for plant water use but the association between leaf and stem structural components and water balance is complex Stomata govern the exchange of water and carbon dioxide into and out of the leaf and may be used as a structural proxy for functional differences that could link adaptations for water balance at the leaf level with water use strategies across the phylogeny In this study we ask how do stomatal characters vary across clades and as a function of leaf shape in co occurring Pelargonium species Stomatal characters were analyzed in relation to leaf shape and size in 30 Pelargonium species representing all major growth forms We found statistically significant differences in stomatal density and stomatal pore index between the three major clades Stomatal density is positively correlated with leaf traits leaf area length fresh and dry mass and negatively correlated with lamina perimeter as well as leaf shape measured by a leaf dissection index Phylogenetic independent contrast PIC analyses show that correlations are even stronger when phylogeny is considered While stomatal variation is usually examined with suites of physiological measurements our study is unique in

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=detail&aid=734 (2016-02-01)
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  • Botany 2010 - Abstract Search
    of small shrubs and large canopy trees found from the Andean cloud forests to the Amazon rainforest and the Brazilian cerrado The section has received some taxonomic attention but until recently has been largely absent from molecular phylogenies Section Crinitum is most closely related to sect Androceras within the Leptostemonum clade or spiny solanums however the relationship between these sections has not been clearly defined until now Section Crinitum is characterized by its large stature as well as the large flowers and fruits in most species Here we discuss the species and present data that support the traditional species circumscriptions We also provide morphological characters that relate to the principal lineages within the section and discuss the importance of fruit and trichome morphologies Our data indicate that section Crinitum contains two main centers of diversity one in the sub montane humid forests along the eastern slopes of the Andes and another in eastern Brazil Restricted species distributions are common in the Andean species while the lowland species are more widely distributed These distributions are related to orographic and climatic features of the landscape and shed light into the limited or extensive geographic range of each species These data help to

    Original URL path: http://2010.botanyconference.org/engine/search/index.php?func=detail&aid=552 (2016-02-01)
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