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.
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Showing 1 to 11 of 11 for “"phloem loading"”.
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On the role of sugar compartmentation and stachyose synthesis in symplastic phloem loading
Im Phloem werden Assimilate von den Source-Organen zu den Sink-Organen der Pflanze transportiert. Bei der Beladung des Phloems mit Assimilaten werden zwei mögliche Mechanismen unterschieden, die als apoplastische und symplastische Phloembeladung bezeichnet werden. Bei Pflanzenarten mit potentiell …
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Passive phloem loading and long-distance transport in a synthetic tree-on-a-chip
… fruits). A crucial step in this process is the loading of sugars from photosynthetic cells to the export conduit (the phloem). In this thesis, we developed a synthetic microfluidic osmotic pump mimicking the mechanism of passive phloem loading, where sugars are transported by diffusion from a …
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Molecular and Genomic Analysis of Nitrogen Regulation of Amino Acid Permease I (Aap1) in Arabidopsis
… transporter AAP1, this may lead to modulated phloem loading of amino acids and finally influence plant nitrogen status.
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The role of environment, sink capacity, and carbon translocation in determining C3 plant responses to elevated [CO2]
… 4, the hypothesis that different mechanisms of phloem loading can lead to a change in the photosynthetic response to elevated [CO2] was tested. Plants have evolved different strategies to load phloem with sugars to send to sink tissue. One method, apoplastic loading, uses active sugar …
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Sucrose -Mediated Transcriptional Regulation of Proton /Sucrose Symporters in Source Leaves of Sugar Beet and Arabidopsis Thaliana
… regulating assimilate partitioning by modulating phloem loading in response to changing levels of sink demand. Also, symporters that are members of two discovered sucrose transporter families are regulated by osmotic potential in a novel pathway that may be involved plant responses to water stress.
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NAT2/AAP1 as a Prototypical Example of the AAP Amino Acid Transporter Gene Family: From Protein Topology to Regulation of Gene Expression
… supports the notion that NAT2 may be involved in phloem loading of newly synthesized amino acids in leaves. In addition, carbohydrate is able to enhance NAT2 expression in dark-adapted plants, suggesting the light induction may be mediated by production of carbohydrate, at least in part. These …
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Soybean's Future: Photosynthesis, Sucrose Transport, Dry Mass Accumulation and Yield in a Changing Atmosphere
… capacity and possibly capacity for phloem loading. These results suggest that projections of future world food supply based on chamber studies are likely over-optimistic.
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Functional analysis of the sucrose synthase gene family in Arabidopsis thaliana
… role in supplying energy in companion cells for phloem loading (Fu and Park, 1995), provides substrates for starch synthesis (Zrenner et al., 1995), and supplies UDP-glucose for cell wall synthesis (Haigler et al., 2001). Analysis of the Arabidopsis genome identifies six Susy isoforms. The …
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Radiation-induced changes in the export of photoassimilated carbon /|nBarry Jess Shelp. -- 260 0 St. Catharines, [Ont. : s. n.],
… which may provide energy directly for phloem loading and for membrane integrity of the phloem tissue* In regards to the pattern of distribution of exported photoassimilate, the site is likely the apical sink, possibly the result of changes of levels of endogenous hormones. By the …
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Dissection of phloem transport in cucurbitaceae by metabolomic analysis
… and perplexing questions relating to the phloem loading and transport mechanisms of Cucurbita maxima, by combining metabolomic analysis with cell biological techniques. This putative symplastic loading species has long been used for experiments on phloem anatomy, phloem biochemistry, …
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Zur Bedeutung von Saccharose-Transportern in Pflanzen mit offener Phloemanatomie
… Nährstoffe, wie z.B. Zucker, durch ein als Phloem bezeichnetes Transportgewebe. Der Langstreckentransport zwischen verschiedenen Teilen der Pflanze ist essentiell für deren Entwicklung und Ertragsbildung. Nach bisheriger Lehrmeinung gibt es zwei Wege, wie die Metabolite, insbesondere …