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 10 of 10 for “"Non-Photochemical Quenching (NPQ)"”.
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Multi-omic profiling of NPQ improved nicotiana tabacum lines under uniform light conditions
Non-photochemical quenching (NPQ) is an essential process protecting plants from oxidative damage under high light conditions. During the transition from light to shade, photosynthesis is briefly limited based on the rate of NPQ relaxation. Increasing expression of NPQ mediating proteins (VDE, ZEP, …
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Physiological effects of BA and ABA on caixin seedlings
… of chlorophylls and carotenoids, and photochemical quenching of BA-grown seedlings were higher than control- and ABA-grown seedlings. Non-photochemical quenching (NPQ) of ABA-grown seedlings was higher than control- and BA-grown seedlings. Heat-stressed (45 °C, 15 min) ABA-grown …
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Growth, photophysiology and photosynthesis of two marine diatoms grown under predictable intra-diel light fluctuations
… transport rates (ETR) and the capacity for non-photochemical quenching (NPQ) all increased from SI to HF cultures. In both species increasing light fluctuation amplitude reduced growth rate. This reduction was greater for T. pseudonana than P. tricornutum. In HF cultures growth rates were …
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OPTIMIZING PHOTOSYNTHESIS IN BARLEY TO INCREASE BIOMASS AND GRAIN YIELD
… attivazione e disattivazione delle cinetiche del Non-photochemical quenching (NPQ), il componente più rapido della fotoprotezione, migliora la risposta alle fluttuazioni luminose, riducendo così le perdite energetiche. Con questo lavoro di tesi, è stata esplorata la variabilità genetica …
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Photoprotection and chloroplast regulation in the green algae Chlamydomonas reinhardtii
… light harvesting, are collectively measured as non-photochemical quenching (NPQ) of chlorophyll fluorescence. The major components of NPQ are thermal dissipation of excess light energy (excitation dependent quenching, qE), the migration of antenna complexes from PSII to PSI (state transitions, …
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Optimizing electrogenic activity from photosynthetic bacteria in bioelectrochemical systems
… efficiency to EET in Synechocystis. Non-photochemical quenching (NPQ) was investigated as a limiting factor in biophotovoltaic efficiency and was found to be reduced in the PBS antenna-truncated mutants. Fluorescence and electrochemical data were combined to develop a framework for …
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Unraveling the gene regulators and molecular mechanisms underlying the elevated CO2 response in C3 plants
… efficiency can be improved by accelerating nonphotochemical quenching under fluctuating light conditions. In Chapter 4, the transcriptional response of a transgenic soybean line expressing the AtVPZ cassette—which accelerates non-photochemical quenching (NPQ) relaxation—was evaluated under …
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Characterising natural genetic variation in dynamic photosynthesis and photoprotection in sorghum
Non-photochemical quenching (NPQ) photoprotective processes are key for protecting photosynthetic machinery from excess light energy. Improving the regulation of NPQ in leaves during dynamic light conditions has been identified as a potential route toward increasing photosynthetic efficiency in the …
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The Evolution of Photosystem II Subunit S across the Green Lineage
… as fluorescence or be dissipated as heat (non-photochemical quenching, NPQ). When light levels are too high, NPQ is an important protective process that prevents damage to membranes and proteins in the chloroplast. In vascular plants, the major trigger of fast-inducing energy-dependent NPQ …
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Regulation of the chloroplast light harvesting antenna by plastoquinone redox: Modulation of chlorophyll metabolism and thylakoid complex organization
… by monitoring the redox status of the plastoquionone pool, which serves as an indicator of photosynthetic electron transport. The work in this dissertation seeks to produce a better mechanistic understanding of how light intensity, as sensed by the redox state of the plastoquinone pool, signals …