9 Result(s)
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Klaus von Schwartzenberg
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Article
Open AccessGenomes of multicellular algal sisters to land plants illuminate signaling network evolution
Zygnematophyceae are the algal sisters of land plants. Here we sequenced four genomes of filamentous Zygnematophyceae, including chromosome-scale assemblies for three strains of Zygnema circumcarinatum. We inferr...
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Open AccessSubmergence of the filamentous Zygnematophyceae Mougeotia induces differential gene expression patterns associated with core metabolism and photosynthesis
The streptophyte algal class Zygnematophyceae is the closest algal sister lineage to land plants. In nature, Zygnematophyceae can grow in both terrestrial and freshwater habitats and how they do this is an imp...
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Open AccessThe Overlooked Hybrid: Geographic Distribution and Niche Differentiation Between Spartina Cytotypes (Poaceae) in Wadden Sea Salt Marshes
Whole genome duplications (WGDs) lead to polyploid specimens and are regarded as major drivers for speciation and diversification in plants. One prevalent problem when studying WGDs is that effects of polyploi...
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Open AccessBiological scaling in green algae: the role of cell size and geometry
The Metabolic Scaling Theory (MST), hypothesizes limitations of resource-transport networks in organisms and predicts their optimization into fractal-like structures. As a result, the relationship between popu...
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Evidence for Importance of tRNA-Dependent Cytokinin Biosynthetic Pathway in the Moss Physcomitrella patens
To study cytokinin biosynthesis, we characterized a temperature-sensitive cytokinin-overproducing mutant, oveST25, of the moss Physcomitrella patens with respect to changes in cytokinin content during thermal ind...
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Meeting Report: Botanical Congress, Hamburg, 2007
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Article
Characterisation of a prokaryote-type tRNA-isopentenyltransferase gene from the moss Physcomitrella patens
Cytokinins are of critical importance to numerous developmental processes in plants. Two cytokinin biosynthetic pathways have been described; each one uses a different type of isopentenyltransferases (IPTs) as...
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Cytokinin metabolism in Physcomitrella patens – differences and similarities to higher plants
Cytokinins play an important role in plant development and occur informs with different hormonal activity. As the nucleotide forms of cytokininsare considered to have little or no biological activity, the conv...
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Isolation of two cytokinin metabolites from the rhizosphere of Norway spruce seedlings (Picea abies L. Karst.)
Roots of young Norway spruce seedlings were incubated under hydroculture conditions in a synthetic nutrient medium containing either 3H-isopentenyladenosine, isopentenyladenosine or zeatin riboside. When feeding ...
