ArticlePlant signaling & behavior2016
Actin3 promoter reveals undulating F-actin bundles at shanks and dynamic F-actin meshworks at tips of tip-growing pollen tubes.
Article in Plant signaling & behavior, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Alterations in the proteomic profiles of Arabidopsis roots triggered by sodium chloride stress are exacerbated by impaired function of SYNAPTOTAGMIN 1.BMC plant biology · 2025Article
- Exploring the Role of the Plant Actin Cytoskeleton: From Signaling to Cellular Functions.International journal of molecular sciences · 2023Review
- RNAi-Mediated Knockdown of Calreticulin3a Impairs Pollen Tube Growth inInternational journal of molecular sciences · 2022Article
- Quantitative cell biology of tip growth in moss.Plant molecular biology · 2021Review
- Actin Bundles in The Pollen Tube.International journal of molecular sciences · 2018Review
- Arabidopsis vegetative actin isoforms, AtACT2 and AtACT7, generate distinct filament arrays in living plant cells.Scientific reports · 2018Article
- Interplay between Ions, the Cytoskeleton, and Cell Wall Properties during Tip Growth.Plant physiology · 2018Review
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Authors and funding
8 authors.
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Abstract
The dynamic actin cytoskeleton of pollen tubes is both the driver of the tip growth and the organizer of cell polarity. In order to understand this fast re-arranging cytoskeletal system, we need reliable constructs expressed under relevant promoters. Here we are reporting that the Lifeact reporter, expressed under the pollen-specific Actin3 promoter, visualizes very dynamic F-actin elements both in germinating pollen grains and tip-growing pollen tubes. Importantly, we have documented very active actin polymerization at the cell periphery, especially in the bulging area during pollen germination and in the apical clear zone. Expression of the Lifeact reporter under control of the pollen-specific Actin3 promoter revealed 2 new aspects: (i) long F-actin bundles in pollen tube shanks are dynamic, showing undulating movements, (ii) subapical 'actin collars' or 'fringes' are absent.
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