ArticlePlant signaling & behavior2008
Actin dynamics mediates the changes of calcium level during the pulvinus movement of Mimosa pudica.
Article in Plant signaling & behavior, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 33 citations in OpenAlex.
- Mechanism of the Pulvinus-Driven Leaf Movement: An Overview.International journal of molecular sciences · 2024Review
- Haplotype-resolved genome of Mimosa bimucronata revealed insights into leaf movement and nitrogen fixation.BMC genomics · 2024Article
- Electrical Signaling of Plants under Abiotic Stressors: Transmission of Stimulus-Specific Information.International journal of molecular sciences · 2021Review
- Rapid movements in plants.Journal of plant research · 2021Review
- Mechanical Signaling in the Sensitive PlantPlants (Basel, Switzerland) · 2020Review
- Calcium changes in Robinia pseudoacacia pulvinar motor cells during nyctinastic closure mediated by phytochromes.Protoplasma · 2019Article
- Anaesthetics stop diverse plant organ movements, affect endocytic vesicle recycling and ROS homeostasis, and block action potentials in Venus flytraps.Annals of botany · 2018Article
- Development of an Agrobacterium-mediated stable transformation method for the sensitive plant Mimosa pudica.PloS one · 2014Article
- Mimosa pudica, Dionaea muscipula and anesthetics.Plant signaling & behavior · 2012Article
- Mimosa pudica L. (Laajvanti): An overview.Pharmacognosy reviews · 2012Article
- Disrupted actin dynamics trigger an increment in the reactive oxygen species levels in the Arabidopsis root under salt stress.Plant cell reports · 2012Article
- Boolean function applied to Mimosa pudica movements.Plant signaling & behavior · 2011Article
- Circadian rhythm leaf movement of Phaseolus vulgaris and the role of calcium ions.Plant signaling & behavior · 2011Article
- Mechanical and electrical anisotropy in Mimosa pudica pulvini.Plant signaling & behavior · 2010Article
- Rapid osmocontractile response of motor cells of Mimosa pudica pulvini induced by short light signals.Photochemistry and photobiologyArticle
Corrections and comments
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Authors and funding
3 authors at 1 institution.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The bending movement of the pulvinus of Mimosa pudica is caused by a rapid change in volume of the abaxial motor cells, in response to various environmental stimuli. We investigated the relationship between the actin cytoskeleton and changes in the level of calcium during rapid contractile movement of the motor cells that was induced by electrical stimulation. The bending of the pulvinus was retarded by treatments with actin-affecting reagents and calcium channel inhibitors. The actin filaments in the motor cells were fragmented in response to electrical stimulation. Further investigations were performed using protoplasts from the motor cells of M. pudica pulvini. Calcium-channel inhibitors and EGTA had an inhibitory effect on contractile movement of the protoplasts. The level of calcium increased and became concentrated in the tannin vacuole after electrical stimulation. Ruthenium Red inhibited the increase in the level of calcium in the tannin vacuole and the contractile movement of the protoplasts. However, treatment with latrunculin A abolished the inhibitory effect of Ruthenium Red. Phalloidin inhibited the contractile movement and the increase in the level of calcium in the protoplasts. Our study demonstrates that depolymerization of the actin cytoskeleton in pulvinus motor cells in response to electrical signals results in increased levels of calcium.
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