Nima Yazdanbakhsh

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Plants grow in a light/dark cycle. We have investigated how growth is buffered against the resulting changes in the carbon supply. Growth of primary roots of Arabidopsis seedlings was monitored using time-resolved video imaging. The average daily rate of growth is increased in longer light periods or by addition of sugars. It responds slowly over days when(More)
Plant organ phenotyping by noninvasive video imaging techniques provides a powerful tool to assess physiological traits, circadian and diurnal rhythms, and biomass production. In particular, growth of individual plant organs is known to exhibit a high plasticity and occurs as a result of the interaction between various endogenous and environmental(More)
• All living organisms on Earth are continually exposed to diurnal variations in the gravitational tidal force due to the Sun and Moon. • Elongation of primary roots of Arabidopsis thaliana seedlings maintained at a constant temperature was monitored for periods of up to 14 d using high temporal- and spatial-resolution video imaging. The time-course of the(More)
BACKGROUND Correlative evidence suggests a relationship between the lunisolar tidal acceleration and the elongation rate of arabidopsis roots grown under free-running conditions of constant low light. METHODS Seedlings of Arabidopsis thaliana were grown in a controlled-climate chamber maintained at a constant temperature and subjected to continuous(More)
BACKGROUND Methods exist to quantify the distribution of growth rate over the root axis. However, non-destructive, high-throughput evaluations of total root elongation in controlled environments and the field are lacking in growth studies. A new imaging approach to analyse total root elongation is described. SCOPE High pixel resolution of the images(More)
Arabidopsis root growth kinetics were investigated with high temporal and spatial resolution in combination with detailed statistical analysis to resolve presence of diurnal modulation of root tip displacement. In particular, high resolution video imaging was used to monitor root-tip displacement of Arabidopsis thaliana seedlings over several days. Root(More)
Roots of Arabidopsis thaliana exhibit stable diurnal growth profiles that are controlled by the circadian clock. Here we describe the effects of mutations in leaf starch metabolism on the diurnal root growth characteristics of Arabidopsis thaliana. High temporal and spatial resolution video imaging was performed to quantify the growth kinetics of(More)
The present study was designed to investigate the involvement of the muscarinic cholinergic receptors in the basolateral amygdala (BLA) in memory retrieval. Also, the possible relationship between the BLA muscarinic cholinergic and the NMDA receptor systems was evaluated in the inhibitory avoidance learning. Male Wistar rats were bilaterally cannulated into(More)
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