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  • Botany & Plant Biology 2007 - Abstract Search
    to connect to database 12 59 25 SQL Statement is null or not a SELECT 12 59 25 Abstract Detail Systematics Section ASPT Sonibare Mubo Adeola 1 Soladoye Mike O 2 Ekine Ogunlana Yetunde 3 A Chemotaxonomic approach to the alkane content of three species of Anthocleista Afzel Longaniaceae The chemotaxonomic significance of leaf wax n alkanes was studied in three species of Anthocleista Afzel Identification of alkane components were determined by Gas chromatography GC and Gas chromatography Mass Spectrometry data GC MS In all fourteen alkanes were identified ranging from Tetracosane C 24 H 50 to Heptriacontane C 37 H 76 Tetracosane Pentacosane and Heptriacontane were the major components in all the three species of Anthocleista A djalonensis A Chev and A vogelii Planch were characterized by high percentages of Tetracosane 28 81 and 39 14 respectively whereas in A nobilis Heptriacontane C 37 H 76 was the major component being 24 76 Significant correlation between A djalonensis and A vogelii at 0 01 implies a probable closeness between these species However the result obtained in this study provides further evidence of chemotaxonomic significance Log in to add this item to your schedule 1 University of Ibadan Pharmacognosy Ibadan

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=584 (2016-02-01)
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  • Botany & Plant Biology 2007 - Abstract Search
    Metabolic Engineering Bausher Michael 1 A citrus sucrose synthase CsSUS01 gene promoter contains elements directing tissue specific expression and response to abiotic stress Identification of inducible tissue specific promoters is crucial for the development of effective directed transgene expression We have cloned and characterized the putative promoter region of the sucrose synthase gene CsSUS01 from Citrus sinensis L Osbeck The CsSUS01 promoter is able to direct expression of the reporter gene β glucuronidase GUS in aerial vascular tissue but not roots of transformed Nicotiana tabacum transformed plants Promoter deletion analysis revealed that the region from 499 to 10 nt relative to the transcriptional start site is sufficient to drive significant reporter gene expression in a vascular tissue specific manner In addition we subjected T1 plants harboring the deletion construct to several abiotic stresses Drought stress resulted in a significant increase in reporter gene expression while heat stress did not appear to alter reporter expression in any T1 plant In contrast cold stress significantly reduced GUS expression in T1 plants harboring the construct pCPDSS 751 751 to 10 but did not affect expression in plants harboring the constructs pCPDSS 499 pCPDSS 84 or pCPDSS 1606 suggesting that the region between 751

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=2661 (2016-02-01)
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  • Botany & Plant Biology 2007 - Abstract Search
    Kellogg Allicia A 1 Haas Jordan D 2 Swanson John David 3 A Closer Look at Thorn Development Determining Morphology and Gene Expression in Rubus Thorns Plants and animals both have dermal tissue that serves to protect them from pathogens entering the body Some plants have an additional line of defense arising from thorns prickles and spines which can serve to protect the plant from herbivores Surprisingly there is very little known about the morphology or the developmental and molecular mechanisms by which thorns arise In order to study thorns this research will use as its model system the genus Rubus Additionally Rubus spp are a very good choice for thorn development research since both thorn and thornless varieties exist allowing precise genetic comparisons to be made The objectives of this research are to determine in Rubus 1 the tissue layers of thorns at various times of development and 2 the temporal and positional gene expression of genes potentially involved in thorn development To this end we have completed both light and scanning electron microscopy studies to precisely determine various cell layers and morphologies of Rubus thorns In addition we have begun investigating several potential gene candidates that may be

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=756 (2016-02-01)
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  • Botany & Plant Biology 2007 - Abstract Search
    database 12 59 39 SQL Statement is null or not a SELECT 12 59 39 Abstract Detail Systematics Section ASPT Wada Eric 1 Potter Daniel 2 Walker M Andrew 1 A Combined Molecular and Morphological Study of the Species of Vitis Vitaceae of the Western United States Vitis californica Benth and V girdiana Munson are the two non cultivated species of wild grape that occur in the far western continental United States The two species are most easily distinguished by their geographic range Prior studies suggest the possibility of hybridization between the two species as an explanation for their clinal morphological variation To clarify the species boundaries and estimate the rate of hybridization between the two species we collected individuals from wild populations in the western United States The populations sampled represent the extremities of the species ranges as well as areas where species might come into secondary contact to form hybrids Here we present findings from nuclear ribosomal DNA sequences and 12 microsatellite markers that will be correlated to the morphological data to identify stable morphological markers To investigate the taxonomic status of both species these same data will be compared to a more comprehensive sampling of species distributed

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=2163 (2016-02-01)
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  • Botany & Plant Biology 2007 - Abstract Search
    Microtuberization In Vitro And Colchicine Contents Of Two Species Of Gloriosa Of Colchicaceae The regeneration potentiality and the process of microtuberization from apical buds of underground tubers of two species of Gloriosa were studied The species included G rothschildiana a common hexaploid 2n 66 species of Gloriosa and G orangea a rather uncommon tetraploid 2n 44 species Both the species were propagated in vitro through bud multiplication using modified MS Murashige and Skoog 1962 basal media supplemented with 6 benzylaminopurine BAP and α naphthaleneacetic acid NAA in presence of two different concentrations of sucrose 3 and 6 The optimum medium containing 3 sucrose for microtuberization produced about 180 240 tubers within 6 months or little less However the medium containing 6 sucrose though initiated microtuberization 2 weeks earlier than that with 3 sucrose did not regenerate efficiently The microtubers from 3 sucrose containing media showed almost 97 germination rate The best result was obtained in a medium containing BAP 17 76 µM and NAA 2 15 µM with about 18 24 shoots and 14 21 microtubers shoot Colchicines was extracted from the microtubers of both the species and analyzed through HPLC for quantification A 1 7 fold increase in colchicines content in G rothschildiana and a 2 0 fold increase in G orangea were observed as compared to in vivo tubers The extracted colchicines when treated with Allium sativum L and Mucuna pruriens L root tip cells showed better efficacy than standard colchicines from Sigma In both these test plant systems the extracted colchicines induced both polyploidy and diplochromatid formation at variable rates and the values were little higher in G orangea than in G rothschildiana However G orangea responded better than G rothschildiana against the same concentrations of plant growth regulators and showed better colchicines accumulation as well Log

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=1239 (2016-02-01)
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  • Botany & Plant Biology 2007 - Abstract Search
    null or not a SELECT 12 59 53 Abstract Detail Conservation Biology Na Hye Ryun 1 Kim Changkyun 1 Choi Hong Keun 1 A comparison of Brasenia schreberi Cabombaceae populations based on AFLP analysis Brasenia schreberi is an endangered aquatic plant in South Korea To assess the genetic variation and population structure of B schreberi for conservation 48 individuals from six local populations were analysed by amplified fragment length polymorphism AFLP Five primer pairs produced a total 582 reproducible AFLP bands for 48 individuals of which 408 69 3 were polymorphic The mean values of HE hs and I across the 6 populations were 0 183 0 212 and 0 256 respectively Population GGT HE 0 212 hs 0 226 I 0 323 exhibited the highest heterozygosity in all three estimates Low genetic differentiation θ B 0 196 among populations revealed by the Bayesian approach Analysis of molecular variance showed that 77 5 of variability was partitioned among individuals within populations The high levels of variability among individuals and the lack of clear population differentiation suggest that this species comprises a single genetically diverse group This distribution is in agreement with the outcrossing nature of this plant According to the

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=1977 (2016-02-01)
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  • Botany & Plant Biology 2007 - Abstract Search
    Herkert James 1 A Comparison of Breeding Bird Communities Among Eastern Tallgrass Prairie Remnants And Restorations In Illinois Using data from long term studies in Illinois I compare breeding bird communities among remnant and restored tallgrass prairies Due to habitat fragmentation prairie remnants in Illinois are generally small and isolated As a result breeding bird communities within tallgrass prairie remnants are strongly influenced by prairie size with large prairies sustaining greater numbers of species than smaller prairies Comparison of species area relationships for breeding birds and prairie size for 29 prairie remnants and 13 prairie restorations indicates that the species area relationship for restored prairies is similar to that found for remnant tallgrass prairies within Illinois At the local scale long term monitoring 1995 2006 of tallgrass prairie restorations and remnants at Goose Lake Prairie State Natural Area Grundy County Illinois shows that bird populations within prairie restorations are dynamic and change through time Both the maturation of these restorations and the frequency of prescribed fire were found to influence these community changes Despite their dynamic nature comparisons of bird communities between these restorations and adjacent prairie remnants shows that bird communities in these restorations are converging on communities in

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=1043 (2016-02-01)
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  • Botany & Plant Biology 2007 - Abstract Search
    13 00 02 Abstract Detail Recent Topics Posters Schaubach Rebecca 1 Tyra Josh 1 Elam Joseph 1 Anderson Neil 1 A comparison of plant growth of Lolium and Capsicum with LED HID HPS and natural lighting Light emitting diodes LEDs are efficient low energy cost and low heat generating lighting which have recently been developed for greenhouse production LEDs blue red light using a new prototype were tested with Lolium perenne and Capsicum annuum for their effects on plant growth in comparison with equivalent light intensity 52 µmol m 2 s 1 of high intensity discharge high pressure sodium HID HPS lamps and natural lighting at 18 18C day night temperatures 0 DIF Each light experiment was surrounded by black cloth to prevent light pollution Plant growth was measured by weekly recording of seed germination timing plant height number of nodes number of tillers leaf number flowering initiation flowering root shoot ratio and fresh weights Seed germination was higher with LED 67 than HID HPS 46 for Capsicum Likewise flower bud initiation was 1 wk earlier under LEDs than HID HPS and natural lighting Fresh weights were significantly different between all treatments all other measurements had a similar trend This

    Original URL path: http://2007.botanyconference.org/engine/search/index.php?func=detail&aid=2698 (2016-02-01)
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