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  • Botany & Mycology 2009 - Abstract Search
    for the Orchidaceae As part of the Monocot AToL project we are sequencing the entire plastid genome of species representing each subfamily each tribe and most subtribes of the Orchidaceae The resulting data set should provide an extremely powerful means for inferring the evolutionary history of orchids We will use these data to conduct a test of recent phylogenetic hypotheses based on two three and eight plastid genes and on morphology We will also use the plastome tree to estimate the time of divergence of orchids from their nearest relatives among early divergent lineages of the order Asparagales An analysis of support for individual nodes in the tree as a function of the number of genes introns spacers and bases included will be used to assess minimum requirements for a well resolved orchid phylogeny Log in to add this item to your schedule 1 University of Wisconsin Madison Department of Botany 430 Lincoln Drive Birge Hall Madison WI 53706 USA 2 University of Wisconsin Botany 430 Lincoln Dr Madison WI 53706 USA 3 University of Florida Florida Museum of Natural History Gainesville Florida 32611 7800 USA 4 CSIRO Commonwealth Scientific and Industrial Research Organization Centre for Plant Biodiversity Research GPO Box 1600 Canberra ACT 2601 Australia 5 University of Wisconsin Madison Herbarium and Department of Botany Birge Hall 430 Lincoln Dr Madison WI 53706 USA 6 University of Florida Florida Museum of Natural History Gainesville FL 32611 USA 7 University of Florida Florida Museum of Natural History Dickinson Hall PO Box 117800 Gainseville FL 32611 USA 8 Oberlin College Department of Biology 119 Woodland Street Oberlin OH 44074 USA 9 University of Missouri Biological Sciences 1201 Rollins Road 311 Life Sciences Center Columbia Missouri 65211 USA 10 University of Missouri Columbia Biological Sciences 311 Life Sciences Center 1201 Rollins St

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=683 (2016-02-01)
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  • Botany & Mycology 2009 - Abstract Search
    of Land Plants Okano Yosuke 1 Aono Naoki 1 Hiwatashi Yuji 1 Murata Takashi 1 Nishiyama Tomoaki 2 Ishikawa Takaaki 1 Kubo Minoru 3 Hasebe Mitsuyasu 1 A polycomb repressive complex 2 gene regulates apogamy and likely played a role in the evolution of extended diploid generation and branching in land plants The life cycle of land plants alternates between a haploid multicellular gametophyte and a diploid multicellular sporophyte The haploid generation is more prominent in basal land plants bryophytes whereas the diploid generation dominates in seed plants Genes regulating the alteration of generations are mostly unknown Apogamy is a process that cells of the gametophyte other than the egg cell initiate sporophyte development We found that deletion of CURLY LEAF ortholog in the moss Physcomitrella patens caused apogamy Side branch initial cells which usually form protonema or gametophore apical cells formed sporophyte apical cells The induced apogamous sporophyte continuously grew with an indeterminately grown apical cell Astonishingly it formed branches and the morphology was similar to protracheophytes An induction of exogenous PpCLF in the deletion mutant formed sporangium like organs at the tip of branches These results suggest that the evolution of regulatory networks of PpCLF was related to

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=945 (2016-02-01)
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  • Botany & Mycology 2009 - Abstract Search
    Statement is null or not a SELECT 12 53 12 Abstract Detail Symbioses Plant Animal and Microbe Interactions Maltz Mia 1 Cohen Michael F 2 A Polykingdom Approach to Bioremediation Plant performance was examined as a metric for determining a decrease in soil toxicity through the addition of biological amendments Combinations of biological amendments may catalytically treat contaminated media by enhancing microbial activity providing a more hospitable environment for plant establishment Seeds and aquatic plants were grown in diesel contaminated media that were subjected to various treatment combinations The bio amendments were comprised of digestate a byproduct of anaerobic bacterial digestion of aquatic vegetation and manure solids and mycelium from a white rot fungus Pleurotus ostreatus After the bio amendments had colonized the contaminated media plant inhibition was assessed by measuring seedling germination frequencies and shoot growth In soil contaminated with 5 diesel vol vol inhibition of seed germination and shoot growth of Festuca rubra were decreased by incorporation of digestate 15 d prior to sowing We are currently examining the interaction of a combined amendment composed of digestate and mycelium for decreasing the toxicity of diesel contaminated soil Seedling germination and biomass measurements are inexpensive and easily interpretable metrics

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=713 (2016-02-01)
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  • Botany & Mycology 2009 - Abstract Search
    or not a SELECT 12 53 18 Abstract Detail Systematics Section Whittemore Alan 1 Apomixis and ploidy in North American Celtis Cannabaceae The genus Celtis has long been recognized as a taxonomically difficult group in which species boundaries are obscured by plants showing apparently intermediate morphology This pattern of variation is due to the extensive occurrence of apomictic populations across North America Apomicts show high levels of aborted pollen in

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=70 (2016-02-01)
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  • Botany & Mycology 2009 - Abstract Search
    Statement is null or not a SELECT 12 53 20 Abstract Detail Teaching Section Stevens M Henry H 1 A poster instigated discussion A personal journey into geeky Open Source teaching tools and consequences for students Most students find ecology to be a highly quantitative and computationally intensive discipline especially when they begin their studies out of a love of nature This poster is the a product of my participation in a Faculty Learning Community at Miami University and is an exercise in my own reflection on my teaching methods It describes issues that I have faced over the past 15 years as my own skills as a both a teacher and practitioner of quantitative methods have grown My recent experience includes literate programming taking advantage of both the programming language R and the document preparation system LaTeX In addition my students have used R to incorporate reflective writing into their computer code and computing code into their writing In a completely subjective personal reflection this poster has two sections The first part provides a trajectory of my own traits as a teacher and the commercial and Open Source software I have used The second part illustrates and attempts to

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=206 (2016-02-01)
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  • Botany & Mycology 2009 - Abstract Search
    B 3 Evans Timothy M 1 A Preliminary Phylogenetic Analysis of the Genus Aneilema Commelinaceae based on chloroplast encoded matK and rps16 sequences Molecular phylogenetic studies using the chloroplast encoded matK and rps16 genes are underway to examine relationships among species of Aneilema and to clarify the relationship of Aneilema to other genera in tribe Commelineae particularly Pollia and Rhopalephora The genus Aneilema consists of 64 species in seven sections distributed primarily in tropical Africa and Australia The species sampled to date represent all seven sections plus A brasiliense whose generic position was considered uncertain Aneilema brasiliense is found to fall outside of the rest of Aneilema and is either sister to Pollia or to a Pollia Aneilema clade The basal grade of Aneilema consists of species of two sections the Australian sect Aneilema and African sect Amelina Amelina appears to be polyphyletic but the support is weak Strong support is found for the monophyly of sect Brevibarbata based on two West African forest species Moderate support is also found for a sister relationship between the East African sections Lamprodithyros and Rendlei both of which comprise species with glabrous stamen filaments Rhopalephora is found to belong within Aneilema The inclusion

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=828 (2016-02-01)
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  • Botany & Mycology 2009 - Abstract Search
    Evolution Ovrebo Clark L 1 Hughes Karen W 2 Halling Roy E 3 A preliminary phylogeny of Tricholoma based on the rRNA ITS region Tricholoma has long been a focus of the first author s research and most of that work has taken a morphological approach A current collaborative project is to examine the species in the genus utilizing DNA sequencing of the ribosomal RNA region For these analyses DNA was extracted using a modified CTAB buffer followed by alcohol precipitation Primers ITS1F and ITSF4 were used for PCR of the ribosomal RNA ITS region Dideoxy sequencing was primed with ITS5 in the forward direction and ITS4 in the reverse direction with alignment and trimming done manually These sequenced collections have also been examined morphologically Related sequences were obtained from GenBank Alignment difficulties required deletion of approximately 100bp of data for analysis of the entire Tricholoma data set A majority rule consensus tree of 1000 equally parsimonious trees was obtained using PAUP The resulting tree included two distinct clades comprising ca 18 subclades A comparison of the clades to the infrageneric classification of Rolf Singer reveals some similarities when comparing morphology vs DNA sequencing In the Singerian classification Tricholoma subg Tricholoma is composed of two main sections sect Tricholoma and sect Genuina Most of section Tricholoma is represented by a monophyletic clade in the ITS phylogeny The subclades within sect Tricholoma agree well with stirpes of Singer and pose no alignment problems Section Genuina composed of T caligatum T magnivelare T colossum T fulvum T vaccinum T ustale and T focale appears in a well supported clade together with other morphologically unrelated subgenera Pardinicutis and Contextocutis and a T myomyces subclade the latter belonging to sect Tricholoma Tricholoma saponaceum and variants belong to subg Contextocutis and appears as a separate

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=285 (2016-02-01)
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  • Botany & Mycology 2009 - Abstract Search
    1 Kron Kathleen A 1 A Preliminary Study of Phylogenetic Relationships of Muehlenbeckia Meisn Polygonaceae Based on Morphological Characters Muehlenbeckia is one of 48 named genera in Polygonaceae and comprises approximately 31 species with a liana or shrubby habit They are predominantly found in disturbed and xeric habitats and some are used as ornamentals Muehlenbeckia s distribution is amphipacific with species occurring in Central and South America Papua New Guinea the Solomon Islands Australia Tasmania and New Zealand None of the species that occur in Australasia are also distributed in the Americas and vice versa Morphologically the genus is recognized by a combination of features such as extrafloral pit nectaries on the petiole base fimbriate or penicillate trifid stigmas and a persistent baccate perianth The ocreae so characteristic for Polygonaceae are often not persistent Flowers may be unisexual and or bisexual on an individual plant Molecular analyses show that Muehlenbeckia belong in the strongly supported Polygonoideae and are included in a clade that also comprises Fallopia Adans and Reynoutria Houtt In this study phylogenetic relationships of Muehlenbeckia are investigated with cladistic analyses of 48 morphological characters Twenty Muehlenbeckia two Fallopia and one Reynoutria species were used for this study Despite

    Original URL path: http://2009.botanyconference.org/engine/search/index.php?func=detail&aid=190 (2016-02-01)
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