ArticlePlant cell reports2016
PIN2-like proteins may contribute to the regulation of morphogenetic processes during spermatogenesis in Chara vulgaris.
Article in Plant cell reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 40 citations in OpenAlex.
- Evolutionary shifts in plant adaptation mediated by phytohormones.Plant communications · 2026Review
- The role of indole-3-acetic acid and characterization of PIN transporters in complex streptophyte alga Chara braunii.The New phytologist · 2025Article
- Origin and evolution of auxin-mediated acid growth.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Review
- Plasmodesmata callose binding protein 2 contributes to the regulation of cambium/phloem formation and auxin response during the tissue reunion process in incised Arabidopsis stem.Journal of plant research · 2023Article
- Chromosome-level genomes of multicellular algal sisters to land plants illuminate signaling network evolution.bioRxiv : the preprint server for biology · 2023Article
- Differential gene expression patterns during gametophyte development provide insights into sex differentiation in the dioicous kelp Saccharina japonica.BMC plant biology · 2021Article
- Functional innovations of PIN auxin transporters mark crucial evolutionary transitions during rise of flowering plants.Science advances · 2020Article
- ER-Localized PIN Carriers: Regulators of Intracellular Auxin Homeostasis.Plants (Basel, Switzerland) · 2020Review
- 5-Aminouracil and other inhibitors of DNA replication induce biphasic interphase-mitotic cells in apical root meristems of Allium cepa.Plant cell reports · 2020Article
- Evo-physio: on stress responses and the earliest land plants.Journal of experimental botany · 2020Article
- Review
- Primitive Auxin Response without TIR1 and Aux/IAA in the Charophyte AlgaPlant physiology · 2017Article
- Enzyme-Less Growth in Chara and Terrestrial Plants.Frontiers in plant science · 2016Review
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
key messagePIN2-like auxin transporters are expressed, preferentially in a polarized manner, in antheridial cells of freshwater green alga Chara vulgaris , considered to be the closest relative of the present-day land plants. Chara vulgaris represents a group of advanced multicellular green algae that are considered as the closest relatives of the present-day land plants. A highly specialized structure of its male sex organs (antheridia) includes filaments consisting of generative cells, which after a series of synchronous divisions transform into mature sperm, and non-generative cells comprising outer shield cells, cylindrical manubria, and central complex of capitular cells from which antheridial filaments arise. Immunofluorescence observations indicate that PIN2-like proteins (PIN2-LPs), recognized by antibodies against PIN-FORMED2 (PIN2) auxin transporter in Arabidopsis thaliana, are expressed in both types of antheridial cells and, in most of them, preferentially accumulate in a polarized manner. The appearance of PIN2-LPs in germ-line cells is strictly confined to the proliferative period of spermatogenesis and their quantities increase steadily till antheridial filaments reach the 16-celled stage. An enhanced level of PIN2-LPs observed in the central cell walls separating two asynchronously developing parts of antheridial filaments (characterized by the plugged plasmodesmata) is correlated with an enhanced deposition of callose. Intense PIN2-LPs immunofluorescence maintained in the capitular cells and its altering polarity in manubria suggest a pivotal role of these cells in the regulation of auxin transport directionality during the whole time of antheridial ontogenesis. Immunohistochemical staining of IAA revealed a clear-cut correspondence between localization sites of auxins and PIN2-LPs. It seems probable then that a supplementary developmental mechanism has evolved in Chara, by which all antheridial elements may be integrated at the supra-cellular level via plasma membrane-targeted PIN2-LPs and auxin-mediated processes.
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