34 Result(s)
within
Murray R Badger
English
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Article
Mehler reaction plays a role in C3 and C4 photosynthesis under shade and low CO2
Alternative electron fluxes such as the cyclic electron flux (CEF) around photosystem I (PSI) and Mehler reaction (Me) are essential for efficient photosynthesis because they generate additional ATP and protec...
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Article
Open AccessCyclic electron flow and light partitioning between the two photosystems in leaves of plants with different functional types
Cyclic electron flow (CEF) around photosystem I (PSI) is essential for generating additional ATP and enhancing efficient photosynthesis. Accurate estimation of CEF requires knowledge of the fractions of absorb...
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Article
Open AccessCarboxysome encapsulation of the CO2-fixing enzyme Rubisco in tobacco chloroplasts
A long-term strategy to enhance global crop photosynthesis and yield involves the introduction of cyanobacterial CO2-concentrating mechanisms (CCMs) into plant chloroplasts. Cyanobacterial CCMs enable relatively ...
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Article
Open AccessThe combination of gas-phase fluorophore technology and automation to enable high-throughput analysis of plant respiration
Mitochondrial respiration in the dark (R dark) is a critical plant physiological process, and hence a reliable, efficient and high-throughput method of measuring variation in rates of R
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Article
Artificial remodelling of alternative electron flow by flavodiiron proteins in Arabidopsis
In photosynthesis, linear electron transport from water to nicotinamide adenine dinucleotide phosphate (NADP+) cannot satisfy the ATP/NADPH production stoichiometry required by the Calvin–Benson cycle. Cyclic ele...
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Chapter and Conference Paper
Quantification of Cyclic Electron Flow in Spinach Leaf Discs
We quantified the photosynthetic cyclic electron flux (CEF) around Photosystem I as the difference between the total electron flux through PS I (ETR1) and the linear electron flux through both photosystems. Bo...
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Chapter and Conference Paper
The Effects of Antisense Suppression of δ Subunit of Chloroplast ATP Synthase on the Rates of Chloroplast Electron Transport and CO2 Assimilation in Transgenic Tobacco
In C3 plants, CO2 assimilation is limited by RuBP regeneration rate at high CO2. RuBP regeneration rate in turn is determined by either the chloroplast electron transport capacity to generate NADPH and ATP or the...
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Article
Over-expression of the β-carboxysomal CcmM protein in Synechococcus PCC7942 reveals a tight co-regulation of carboxysomal carbonic anhydrase (CcaA) and M58 content
Carboxysomes, containing the cell’s complement of RuBisCO surrounded by a specialized protein shell, are a central component of the cyanobacterial CO2-concentrating mechanism. The ratio of two forms of the β-carb...
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Article
The CO2-concentrating mechanism of Synechococcus WH5701 is composed of native and horizontally-acquired components
The cyanobacterial CO2-concentrating mechanism (CCM) is an effective adaptation that increases the carbon dioxide (CO2) concentration around the primary photosynthetic enzyme Ribulose-1,5-bisphosphate Carboxylase...
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Article
Peroxisomal hydroxypyruvate reductase is not essential for photorespiration in Arabidopsis but its absence causes an increase in the stoichiometry of photorespiratory CO2 release
Recycling of carbon by the photorespiratory pathway involves enzymatic steps in the chloroplast, mitochondria, and peroxisomes. Most of these reactions are essential for plants growing under ambient CO2 concentra...
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Article
Open AccessThe MetabolomeExpress Project: enabling web-based processing, analysis and transparent dissemination of GC/MS metabolomics datasets
Standardization of analytical approaches and reporting methods via community-wide collaboration can work synergistically with web-tool development to result in rapid community-driven expansion of online data r...
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Article
Open AccessA rapid, non-invasive procedure for quantitative assessment of drought survival using chlorophyll fluorescence
Analysis of survival is commonly used as a means of comparing the performance of plant lines under drought. However, the assessment of plant water status during such studies typically involves detachment to es...
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Article
Characterisation of CO2 and HCO3 − uptake in the cyanobacterium Synechocystis sp. PCC6803
The availability of a complete genome database for the cyanobacterium Synechocystissp. PCC6803 (glucose-tolerant strain) has raised expectations that this organism would become a reference strain for work aimed a...
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Article
Increased heat sensitivity of photosynthesis in tobacco plants with reduced Rubisco activase
High temperature inhibits photosynthesis by several mechanisms including deactivation of Rubisco. The inhibition of photosynthesis by high temperature and its relationship to Rubisco deactivation was studied u...
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Chapter
CO2 Acquisition, Concentration and Fixation in Cyanobacteria and Algae
Aquatic photosynthetic organisms face a number of unique problems with regard to the supply of CO2 for photosynthesis. These stem largely from the physical chemistry of the water phase in which they live, where t...
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Chapter
Involvement of the cmpABCD Genes in Bicarbonate Transport of the Cyanobacterium Synechococcus sp. Strain PCC 7942
Cyanobacteria possess a CO2-concentrating mechanism (CCM) which elevates the CO2 concentration around the active site of Rubisco and thereby compensates for the low selectivity of Rubisco for CO2 [1]. Active tran...
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Chapter
Regulation of CO2 Assimilation Rate by the Chloroplast Cytochrome BF Complex
The photosynthetic electron transport pathway is responsible for the provision of ATP and NADPH for photosynthetic carbon reduction (PCR) and as such it has the potential to exert strong regulation over photos...
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Chapter
High Temperature Inhibition of Photosynthesis Requires Rubisco Activase for Reversibility
High temperature can limit plant growth and inhibit photosynthesis. One of the ways that high temperature can reduce the rate of photosynthesis involves deactivation of rubisco (Weis, 1980; Kobza and Edwards, ...
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Article
Reduced levels of cytochrome bf complex in transgenic tobacco leads to marked photochemical reduction of the plastoquinone pool, without significant change in acclimation to irradiance
Tobacco transgenics with decreased amounts of the FeS apoprotein were generated using an antisense RNA construct targeted against the nuclear-encoded Rieske FeS protein of cytochrome bf complex [Price et al. (...
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Article
PsaE- and NdhF-mediated electron transport affect bicarbonate transport rather than carbon dioxide uptake in the cyanobacteriumSynechococcus sp. PCC7002
The wild-type and three deletional interposon mutants (psaE, ndhF, psaE/ndhF) ofSynechococcus sp. PCC7002 were analysed with respect to their ability to induce the CO2-concentrating mechanism (CCM). The response ...
