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Cells
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The Role of the Plant Cytoskeleton in Signal Transduction Networks
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The Role of the Plant Cytoskeleton in Signal Transduction Networks

A special issue of Cells (ISSN 2073-4409). This special issue belongs to the section "Plant, Algae and Fungi Cell Biology".

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 7744

Special Issue Editor

Dr. Einat Sadot

E-Mail Website
Guest Editor
The Institute of Plant Sciences, The Volcani Center, ARO, HaMaccabim Road, Rishon LeZion P.O.B 15159, Israel
Interests: plant cell biology and the cytoskeleton; adventitious root formation

Special Issue Information

Dear Colleagues,

Plants respond to multiple external biotic or abiotic signals, such as pathogens and herbivores, or drought, light, salt, etc. In addition, plants respond to internal signals derived from developmental programs and physiological changes. The latter signals are perceived in plant cells, and are further propagated through precise signaling networks that diverge and converge downstream of the initial stimulus receptor. The highly dynamic plant cytoskeleton is composed of actin and microtubule arrays. These arrays alter their organization, stability and dynamics in response to internal and external signals. The cytoskeleton-associated proteins are key regulators of the rates of nucleation, polymerization and depolymerization, and of the severing and bundling of the actin and microtubule arrays, which facilitate rearrangements. Some of the dozens of expressed microtubule- and actin-binding proteins are regulated at the transcriptional or post-translational level by hormones, calcium-signaling pathways, kinases and phosphatases, small GTPases and more. The cytoskeleton subunits themselves can go under post-translation modifications.

This special issue welcomes original research, reviews and short communications addressing the cytoskeleton as a signaling hub, or as part of the signaling networks.

We look forward to your contribution

Dr. Einat Sadot
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Cells is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plant cytoskeleton

  • signal transduction

  • post-translation modification

  • actin binding proteins

  • microtubule associated proteins

Published Papers (3 papers)

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Research

Jump to: Review

14 pages, 5444 KiB  
Article
Collisions of Cortical Microtubules with Membrane Associated Myosin VIII Tail
by Sefi Bar-Sinai, Eduard Belausov, Vikas Dwivedi and Einat Sadot
Cells 2022, 11(1), 145; https://doi.org/10.3390/cells11010145 - 3 Jan 2022
Cited by 4 | Viewed by 1908
Abstract
The distribution of myosin VIII ATM1 tail in association with the plasma membrane is often observed in coordination with that of cortical microtubules (MTs). The prevailing hypothesis is that coordination between the organization of cortical MTs and proteins in the membrane results from [...] Read more.
The distribution of myosin VIII ATM1 tail in association with the plasma membrane is often observed in coordination with that of cortical microtubules (MTs). The prevailing hypothesis is that coordination between the organization of cortical MTs and proteins in the membrane results from the inhibition of free lateral diffusion of the proteins by barriers formed by MTs. Since the positioning of myosin VIII tail in the membrane is relatively stable, we ask: can it affect the organization of MTs? Myosin VIII ATM1 tail co-localized with remorin 6.6, the position of which in the plasma membrane is also relatively stable. Overexpression of myosin VIII ATM1 tail led to a larger fraction of MTs with a lower rate of orientation dispersion. In addition, collisions between MTs and cortical structures labeled by ATM1 tail or remorin 6.6 were observed. Collisions between EB1 labeled MTs and ATM1 tail clusters led to four possible outcomes: 1—Passage of MTs through the cluster; 2—Decreased elongation rate; 3—Disengagement from the membrane followed by a change in direction; and 4—retraction. EB1 tracks became straighter in the presence of ATM1 tail. Taken together, collisions of MTs with ATM1 tail labeled structures can contribute to their coordinated organization. Full article
(This article belongs to the Special Issue The Role of the Plant Cytoskeleton in Signal Transduction Networks)
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15 pages, 5916 KiB  
Article
General Patterns and Species-Specific Differences in the Organization of the Tubulin Cytoskeleton in Indeterminate Nodules of Three Legumes
by Anna B. Kitaeva, Artemii P. Gorshkov, Evgenii A. Kirichek, Pyotr G. Kusakin, Anna V. Tsyganova and Viktor E. Tsyganov
Cells 2021, 10(5), 1012; https://doi.org/10.3390/cells10051012 - 25 Apr 2021
Cited by 5 | Viewed by 2206
Abstract
The tubulin cytoskeleton plays an important role in establishing legume–rhizobial symbiosis at all stages of its development. Previously, tubulin cytoskeleton organization was studied in detail in the indeterminate nodules of two legume species, Pisum sativum and Medicago truncatula. General as well as [...] Read more.
The tubulin cytoskeleton plays an important role in establishing legume–rhizobial symbiosis at all stages of its development. Previously, tubulin cytoskeleton organization was studied in detail in the indeterminate nodules of two legume species, Pisum sativum and Medicago truncatula. General as well as species-specific patterns were revealed. To further the understanding of the formation of general and species-specific microtubule patterns in indeterminate nodules, the tubulin cytoskeleton organization was studied in three legume species (Vicia sativa, Galega orientalis, and Cicer arietinum). It is shown that these species differ in the shape and size of rhizobial cells (bacteroids). Immunolocalization of microtubules revealed the universality of cortical and endoplasmic microtubule organization in the meristematic cells, infected cells of the infection zone, and uninfected cells in nodules of the three species. However, there are differences in the endoplasmic microtubule organization in nitrogen-fixing cells among the species, as confirmed by quantitative analysis. It appears that the differences are linked to bacteroid morphology (both shape and size). Full article
(This article belongs to the Special Issue The Role of the Plant Cytoskeleton in Signal Transduction Networks)
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Review

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14 pages, 1740 KiB  
Review
γ-Tubulin Complexes and Fibrillar Arrays: Two Conserved High Molecular Forms with Many Cellular Functions
by Jana Chumová, Hana Kourová, Lucie Trögelová, Geoffrey Daniel and Pavla Binarová
Cells 2021, 10(4), 776; https://doi.org/10.3390/cells10040776 - 1 Apr 2021
Cited by 3 | Viewed by 3044
Abstract
Higher plants represent a large group of eukaryotes where centrosomes are absent. The functions of γ-tubulin small complexes (γ-TuSCs) and γ-tubulin ring complexes (γ-TuRCs) in metazoans and fungi in microtubule nucleation are well established and the majority of components found in the complexes [...] Read more.
Higher plants represent a large group of eukaryotes where centrosomes are absent. The functions of γ-tubulin small complexes (γ-TuSCs) and γ-tubulin ring complexes (γ-TuRCs) in metazoans and fungi in microtubule nucleation are well established and the majority of components found in the complexes are present in plants. However, plant microtubules are also nucleated in a γ-tubulin-dependent but γ-TuRC-independent manner. There is growing evidence that γ-tubulin is a microtubule nucleator without being complexed in γ-TuRC. Fibrillar arrays of γ-tubulin were demonstrated in plant and animal cells and the ability of γ-tubulin to assemble into linear oligomers/polymers was confirmed in vitro for both native and recombinant γ-tubulin. The functions of γ-tubulin as a template for microtubule nucleation or in promoting spontaneous nucleation is outlined. Higher plants represent an excellent model for studies on the role of γ-tubulin in nucleation due to their acentrosomal nature and high abundancy and conservation of γ-tubulin including its intrinsic ability to assemble filaments. The defining scaffolding or sequestration functions of plant γ-tubulin in microtubule organization or in nuclear processes will help our understanding of its cellular roles in eukaryotes. Full article
(This article belongs to the Special Issue The Role of the Plant Cytoskeleton in Signal Transduction Networks)
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