A5012871574- Light effects on plants
- Plant Molecular Biology Research
- Photosynthetic Processes and Mechanisms
- Circadian rhythm and melatonin
- Plant Stress Responses and Tolerance
- Plant nutrient uptake and metabolism
- Plant responses to elevated CO2
- Greenhouse Technology and Climate Control
- Plant and Biological Electrophysiology Studies
- Plant Reproductive Biology
- Plant Parasitism and Resistance
- Calcium signaling and nucleotide metabolism
- Algal biology and biofuel production
- Photoreceptor and optogenetics research
- Wheat and Barley Genetics and Pathology
- Spaceflight effects on biology
- Plant Pathogens and Resistance
- Biocrusts and Microbial Ecology
- Protist diversity and phylogeny
- Plant biochemistry and biosynthesis
- Bryophyte Studies and Records
- Genetic Mapping and Diversity in Plants and Animals
- Botanical Research and Applications
- Malaria Research and Control
- Themes in Literature Analysis
John Innes Centre
2019-2025
Norwich Research Park
2020-2025
University of Bristol
2013-2019
University of Cambridge
2002-2018
University of York
2007-2010
University of Warwick
2005
HUN-REN Szegedi Biológiai Kutatóközpont
2005
Hungarian Academy of Sciences
2005
Newcastle University
2002
Circadian clocks are believed to confer an advantage plants, but the nature of that has been unknown. We show a substantial photosynthetic is conferred by correct matching circadian clock period with external light-dark cycle. In wild type and in long– short–circadian mutants Arabidopsis thaliana , plants matched environment contain more chlorophyll, fix carbon, grow faster, survive better than periods differing from their environment. This explains why gain control.
Surely most chronobiologists believe circadian clocks are an adaptation of organisms that enhances fitness, but we certain this focus our research effort really confers a fitness advantage? What is the evidence, and how do evaluate it? best criteria? These questions topic review. In addition, will discuss selective pressures might have led to historical evolution systems while considering intriguing question whether ongoing climate change modulating these so clock still evolving.
Circadian clocks are 24-h timing devices that phase cellular responses; coordinate growth, physiology, and metabolism; anticipate the day–night cycle. Here we report sensitivity of Arabidopsis thaliana circadian oscillator to sucrose, providing evidence plant metabolism can regulate function. We found system is particularly sensitive sucrose in dark. These data suggest there a feedback between molecular components comprise metabolism, with clock both regulating being regulated by metabolism....
Transcriptional feedback loops are a feature of circadian clocks in both animals and plants. We show that the plant clock also incorporates cytosolic signaling molecule cyclic adenosine diphosphate ribose (cADPR). cADPR modulates oscillator's transcriptional drives oscillations Ca 2+ release. The effects antagonists signaling, manipulation synthesis, mathematical simulation interaction with indicate forms loop within clock.
We tested the hypothesis that circadian clock modulates Ca(2+)-based signalling pathways, using low-temperature (LT)-induced Ca(2+) signals. investigated relationship between diurnal and modulation of LT-induced increases in cytosolic-free calcium ([Ca(2+)](cyt)), regulation [Ca(2+)](cyt)-dependent outputs LT-signalling network (RD29A transcript abundance stomatal closure). measured [Ca(2+)](cyt) non-invasively aequorin, targeted aequorin to guard cell a cell-specific GAL4-green fluorescent...
Synchronization of circadian clocks to the day-night cycle ensures correct timing biological events. This entrainment process is essential ensure that phase oscillator synchronized with daily events within environment [1], permit accurate anticipation environmental changes [2, 3]. Entrainment in plants requires oscillator, through unidentified pathways, which alter gene expression response light, temperature, and sugars [4-6]. To determine how respond metabolic rhythms, we investigated...
Increases in cytosolic free Ca(2+) ([Ca(2+)](cyt)) are common to many stress-activated signalling pathways, including the response saline environments. We have investigated nature of NaCl-induced [Ca(2+)](cyt) signals whole Arabidopsis thaliana seedlings using aequorin. found that increases heterogeneous and mainly restricted root. Both concentration NaCl composition solution bathing root profound effects on magnitude dynamics [Ca(2+)](cyt). Alteration external K(+) caused changes temporal...
Circadian timekeeping in plants increases photosynthesis and productivity. There are circadian oscillations the abundance of many chloroplast-encoded transcripts, but it is not known how clock regulates chloroplast transcription or photosynthetic apparatus. We show that, Arabidopsis, nuclear-encoded SIGMA FACTOR5 (SIG5) controls rhythms several genes, revealing one pathway by which oscillator gene expression. also that SIG5 mediates gating light input to a gene. have identified an...
High temperature promotes guard cell expansion, which opens stomatal pores to facilitate leaf cooling. How the high-temperature signal is perceived and transmitted regulate aperture is, however, unknown. Here, we used a reverse-genetics approach understand high temperature-mediated opening in Arabidopsis (
Summary Vertical farming is a type of indoor agriculture where plants are cultivated in stacked systems. It forms rapidly growing sector with new emerging technologies. Indoor farms often use soil‐free techniques such as hydroponics and aeroponics. Aeroponics involves the application to roots nutrient aerosol, which can lead greater plant productivity than hydroponic cultivation. thought resolve variety physiological constraints that occur within We synthesize existing studies physiology...
Bacillus subtilis has a circadian clock, extending the field of chronobiology to nonphotosynthetic bacteria.
We have tested the hypothesis that circadian oscillations in concentration of cytosolic free calcium ([Ca2+]cyt) can encode information. imaged [Ca2+]cyt cotyledons and leaves Arabidopsis (Arabidopsis thaliana) a 24-h period light/dark cycles also constant light. The amplitude, phase, shape at critical daily time points were controlled by regimes which plants grown. These data provide evidence information concerning daylength light intensity, are two major regulators plant growth development.
All plant productivity, including the food that we eat, arises from capture of solar energy by plants. At most latitudes sunlight is available for only part 24 h day due to rotation planet. This rhythmic and predictable alteration in environment has driven evolution circadian clock, which an extremely pervasive influence upon molecular biology, physiology phenology. A number recent studies have demonstrated clock integrated very closely with photosynthesis its metabolic products. We consider...
Abstract Herbicides increase crop yields by allowing weed control and harvest management. Glyphosate is the most widely-used herbicide active ingredient, with $11 billion spent annually on glyphosate-containing products applied to >350 million hectares worldwide, using about 8.6 kg of glyphosate. The herbicidal effectiveness glyphosate can depend upon time day spraying. Here, we show that plant circadian clock regulates We identify a daily rhythm in inhibition development glyphosate, due...
• We have developed a low-cost, multicuvette infrared gas analyser system for medium-term measurement of exchange in Arabidopsis thaliana plants. The enables parallel stomatal conductance and CO2 assimilation, providing direct comparison between genotypes. This allows the molecular genetic tools that are available to be combined with power whole-plant physiology. was designed specifically quantification circadian rhythms exchange, controls cuvette relative humidity concentration under both...