Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"Liverwort"”.
-
Liverwort-Fungal Associations: Novel Symbioses In Polar Regions?
… of the most ancient groups of land plants — the liverworts — and in the bryophyte enriched floras of the polar regions. This study provides the first large-scale survey of fungal colonisation of liverworts on Svalbard in the High Arctic and on South Georgia in sub-Antarctica, increasing current …
-
Molecular systematics of the leafy liverwort family Lophoziaceae cavers
… of phylogenetic relationships in the leafy liverworts with emphasis on the various elements usually placed in Lophoziaceae. The following conclusions are drawn.
-
The Ultrastructure of Spermatogenesis in The Liverwort, Marchantia Polymorpha
Made available in DSpace on 2014-12-09T22:25:54Z (GMT). No. of bitstreams: 1 7021003.pdf: 5868686 bytes, checksum: 0bd7e2162c869f8c393ff5d248714ed4 (MD5) Previous issue date: 1970
-
Determinants of gemmae output in the liverwort Lophozia ventricosa
… affecting gemmae output of a boreal and arctic liverwort species, Lophozia ventricosa, were studied in Trnndelag, a boreal region of central Norway and in the arctic tundra on Svalbard. The population parameters investigated included colony size, colony shoot density, number of gemmae per shoot, …
-
Palaeoclimatic impacts on the phylogeography of an Afro-montane liverwort: Jamesoniella colorata (Lophoziaceae )
… of genetic diversity of the Afro-montane liverwort Jamesoniella colorata and associating its inferred evolutionary history with major palaeoclimatic trends in South Africa. Liverworts are generally well-suited for phylogeographical studies because they often have low dispersal rates, broad …
-
Bryophytes in the hydrological cycle and climate change implications : A case study of La Réunion cloud forest
… cloud forest of La Réunion, focused on two leafy liverwort species, Mastigophora diclados and Bazzania decrescens. We evaluated liverwort biomass, water storage capacity, atmospheric or cloud water interception, and photosynthetic response to desiccation. We found that B. decrescens stored …
-
SEASONAL VARIATION IN ROTIFER OCCUPANCY WITHIN FRULLANIA EBORACENSIS LOBULES: ILLUMINATING A SYMBIOTIC RELATIONSHIP BETWEEN TWO OVERLOOKED SPECIES
… lobules of the widely distributed epiphytic liverwort, <em>Frullania eboracensis</em>. This research provides a detailed description of rotifer occupancy within lobules of <em>F. eboracensis</em> and tests the hypothesis that rotifer excrement might be a source of nutrients for <em>F. …
-
A bright, sweet evolution: a molecular genetic analysis of Calvin cycle gene expression response to light and sugar in the liverwort marchantia polymorpha, and insights into Calvin cycle promoter motif enrichment in land plants
… Marchantiphyta division and newly emerging model liverwort plant, has been used in this study to demonstrate its potential use in CBB promoter evolution research. Transferring plants to darkness caused the downregulation of CBB genes MpSBPase, MpFBPase, MpPRK, MpRbcS1A and MpRbcS1B in Marchantia …
-
Evolution of Male Gametes in Liverworts
Liverworts are speciose, morphologically diverse, and members of an ancient lineage that is now recognized as the sister group to all other land plants. Spermatozoid ultrastructural characters have provided insight on interrelationships among plant groups as well as the puzzling placement of some …
-
Evolution of life history strategies in Lophoziaceae
… in life history characters among members of the liverwort family Lophoziaceae. A combination of Principal Component and Cluster analyses was used to analyse data from literature in testing for recurrent suites of life history variation among species of the family. Data from literature were also …
-
The diversity of ground bryophyte communities along an altitudinal gradient on La Réunion island
… at 2750 m, these corresponded to a dominance in liverwort and moss species, respectively. The phylogenetic diversity along the altitudinal gradient was far greater than is predicted from the null models suggesting that ground bryophyte communities are structured according to "environmental …
-
BRYOPHYTE ASSEMBLAGES ON AMERICAN HORNBEAM (CARPINUS CAROLINIANA) AND THE SURROUNDING ARBOREAL COMMUNITIES WITHIN THE FOREST OF EAST TEXAS
… with approximately 13,000 species), the liverworts (Marchantiophyta with approximately 5,000 species), and the hornworts (Anthocerotophyta with approximately 150 species). Initial observations indicated that the midstory tree Carpinus caroliniana Walter (American hornbeam) has a bryophyte …
-
Gene Expression Control for Synthetic Patterning of Bacterial Populations and Plants
… for spatial gene expression control in the liverwort: I analyzed codon usage across the transcriptome of M. polymorpha, and used insights gained to design codon-optimized fluorescent reporters successfully expressed from its nuclear and chloroplast genomes. For targeting of bacteriophage T7 …
-
Synthesis of furanosesquiterpenoid natural products
… (a component of the essential oil of the liverwort Aneura pinguis)has been attempted employing two Diels-Alder reactions to generate the four cis-methyl groups found in the natural product.<br/><br/>In a study of the reaction of n-(2-methylallyl)nickel bromide complex with a range of …
-
Total synthesis of ent-plagiochianin B and development of a metathesis approach to aleutianamine.
Isolated in 2018 from the Chinese liverwort Plagiochila duthiana, plagiochianin B features a novel 6/7/3 tricyclic core. The total synthesis of ent-plagiochianin B was achieved in 9 synthetic steps from a known cycloheptenone and 13 steps overall starting from (+)-3-carene. As anticipated, the …
-
Improved plastid transformation in Marchantia polymorpha
… reported for Marchantia polymorpha, a thalloid liverwort classically used as a model species. Marchantia offers rapid generation time, small size, simple genetics, and asexual reproduction by means of gemmae, small disks of tissue which provide a powerful platform for live-tissue microscopy. In …
-
Evolution of life history strategies in Lophoziaceae
… in life history characters among members of the liverwort family Lophoziaceae. A combination of Principal Component and Cluster analyses was used to analyse data from literature in testing for recurrent suites of life history variation among species of the family. Data from literature were also …
-
Expression of Nanobodies in Marchantia polymorpha chloroplasts
… mammalian pathogens. *Marchantia polymorpha*, a liverwort with rapid growth and many experimental tools, presents great potential as a prototyping system to characterise recombinant protein production strategies for plants. In this thesis, I have characterised different approaches for maximising …
-
The role of SCLA-type GRAS transcriptional regulators in plant development and stress responses
… This thesis investigates the GRAS family in liverworts. Mp*GRAS7*, a GRAS gene in the liverwort *Marchantia polymorpha* (common name: Marchantia) was found to be transcriptionally responsive to stress, and it was hypothesised that it had a role in controlling biological responses to the …
Page 1 of 2