ArticleAnnals of botany2006
Distribution of G-actin is related to root hair growth of wheat.
Article in Annals of botany, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 25 citations in OpenAlex.
- Article
- Root hairs: an underexplored target for sustainable cereal crop production.Journal of experimental botany · 2024Review
- Abiotic Stress-InducedFrontiers in plant science · 2021Article
- GLABRA2 Regulates Actin Bundling Protein VILLIN1 in Root Hair Growth in Response to Osmotic Stress.Plant physiology · 2020Article
- Chloroplast avoidance movement: a novel paradigm of ROS signalling.Photosynthesis research · 2020Review
- The Nitrate-Inducible NAC Transcription Factor TaNAC2-5A Controls Nitrate Response and Increases Wheat Yield.Plant physiology · 2015Article
- Actin polymerization drives polar growth in Arabidopsis root hair cells.Plant signaling & behavior · 2014Article
- The circular F-actin bundles provide a track for turnaround and bidirectional movement of mitochondria in Arabidopsis root hair.PloS one · 2014Article
- Actin turnover is required for myosin-dependent mitochondrial movements in Arabidopsis root hairs.PloS one · 2009Article
- New findings in the mechanisms regulating polar growth in root hair cells.Plant signaling & behavior · 2009Review
- Pollen tube growth oscillations and intracellular calcium levels are reversibly modulated by actin polymerization.Plant physiology · 2008Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsActin distribution in root hair tips is a controversial topic. Although the relationship between Ca2+ gradient and actin dynamics in plant tip-growth has been a focus of study, there is still little direct evidence on the exact relationship in root hair tip-growth.
methodsG-actin was labelled by fluorescein isothiocyanate-DNase I. F-actin was labelled by tetramethylrhodamine isothiocyanate-phalloidin. Actin in root hairs of Triticum aestivum (wheat) was investigated using confocal laser-scanning microscopy. KEY
resultsThick F-actin bundles did not extend into a region of approx. 5-10 microm from the tip of the growing root hairs, although they gave off branches of fine actin filaments in the hair tips. A tip-focused G-actin gradient was shown at the extreme apex of growing root hairs. In full-grown wheat root hairs, the tip-focused G-actin gradient disappeared while the thick F-actin bundles extended into the tips. BAPTA-AM, a Ca2+ disruption agent, also caused the tip-focused G-actin gradient to disappear and the diffuse F-actin bundles to appear in the tips of wheat root hairs.
conclusionsThese results suggest that the tip-focused gradient of intracellular G-actin concentration at the extreme apex may be essential for root hair growth, and that preserving the tip-focused gradient needs a high Ca2+ concentration in the root hair tips.
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