Microtubule Regulation in Plants: From Morphological Development to Stress Adaptation

Hsiao, An‐Shan; Huang, Ji-Ying

doi:10.3390/biom13040627

Cited by 7 publications

(4 citation statements)

References 226 publications

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“…TPXs and NRXs are known to catalyze the reduction of disulfide bonds, restoring previous protein conformation and function during UV-B induced molecular stress (Marchal et al, 2014). Lastly, the reduced abundance of three tubulins in cluster 8 (GO:0007017, "microtubule-based process"), may suggest reduced cell expansion and/or proliferation (Hsiao and Huang, 2023). Even though a significant reduction in berry size or weight at harvest was not detected (Fig.…”

Section: Minor Clustersmentioning

confidence: 98%

Proteomic Analysis Reveals the Molecular Pathways Responsible for Solar UV-B Acclimation in High-altitude Malbec Berries

Arias,

Murcia,

Berli

et al. 2023

Preprint

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Grapevine cultivation at high altitudes provides a viable option for producing premium quality wines in the context of climate change. This is primarily attributed to cooler temperatures, wider thermal amplitudes, and increased UV-B radiation. Although high UV-B levels can cause oxidative-stress, grape berries acclimate by generating UV-blocking anthocyanins and antioxidant compounds accumulated in the berry skins, thereby enhancing the organoleptic qualities and aging capacity of wine. This UV-B exclusion study examines how Malbec berries respond to solar UV-B at a high-altitude vineyard in Mendoza, Argentina (1350 m a.s.l.). The results showed that high solar UV-B acts both as a photomorphogenic signal and a stressor. The proteomic changes of berries exposed to +UV-B conditions indicate a decrease of photosynthesis and oxidative phosphorylation, coupled with an increase of glycolysis and tricarboxylic acid cycle as compensatory respiration pathways. Furthermore, numerous chaperones and proteins associated with the antioxidant system exhibited increased abundance to maintain cellular homeostasis. Lastly, veraison-stage berries exposed to +UV-B displayed an activation of the UVR8 signaling cascade and the phenylpropanoid pathway, resulting in higher concentration of phenolic compounds and more oxidation-resistant types of anthocyanins. This is the first report of field-grown grape berry proteomic modulation in response to solar UV-B, and it may have significant implications for the cultivation of high-quality winegrapes in both current and future climate scenarios.

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Section: Minor Clustersmentioning

confidence: 98%

Proteomic Analysis Reveals the Molecular Pathways Responsible for Solar UV-B Acclimation in High-altitude Malbec Berries

Arias,

Murcia,

Berli

et al. 2023

Preprint

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“…Depolymerization of actin filaments may prevent expansion-induced cell lysis during freeze−thaw cycles [211], and the cytoskeleton was thought to take centre stage in abiotic stress responses and resilience [212]. The rapid remodelling of the cytoskeleton can coordinate the movement of intracellular organelles, formation of immune microdomain complexes, transportation of defence compounds and turnover of recognizing receptors, cell-wall-based defence upon pathogen attack, as well as hormone-mediated cell expansion and division under abiotic stress [213][214][215][216][217]. Many cytoskeleton-associated proteins are IDPs or possess extensive IDRs [218,219].…”

Section: Idps Interacting With the Cytoskeleton For Stress Adaptationmentioning

confidence: 99%

Protein Disorder in Plant Stress Adaptation: From Late Embryogenesis Abundant to Other Intrinsically Disordered Proteins

Hsiao

2024

IJMS

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Global climate change has caused severe abiotic and biotic stresses, affecting plant growth and food security. The mechanical understanding of plant stress responses is critical for achieving sustainable agriculture. Intrinsically disordered proteins (IDPs) are a group of proteins without unique three-dimensional structures. The environmental sensitivity and structural flexibility of IDPs contribute to the growth and developmental plasticity for sessile plants to deal with environmental challenges. This article discusses the roles of various disordered proteins in plant stress tolerance and resistance, describes the current mechanistic insights into unstructured proteins such as the disorder-to-order transition for adopting secondary structures to interact with specific partners (i.e., cellular membranes, membrane proteins, metal ions, and DNA), and elucidates the roles of liquid–liquid phase separation driven by protein disorder in stress responses. By comparing IDP studies in animal systems, this article provides conceptual principles of plant protein disorder in stress adaptation, reveals the current research gaps, and advises on the future research direction. The highlighting of relevant unanswered questions in plant protein disorder research aims to encourage more studies on these emerging topics to understand the mechanisms of action behind their stress resistance phenotypes.

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“…Sophisticated plant cell morphogenesis depends, among others, on cell wall properties, in particular on local thickening deposition and cellulose microfibril orientation, which establish specific axes and patterns of growth [1][2][3]. The key instrument that regulates cellulose microfibril orientation in plant cells is the cortical microtubule array [4][5][6]. Since the original discovery of cortical microtubules [7], the "alignment hypothesis" correlated cortical microtubules with cellulose microfibril orientation.…”

Section: Introductionmentioning

confidence: 99%

F-Actin Organization and Epidermal Cell Morphogenesis in the Brown Alga Sargassum vulgare

Panteris,

Pappas

2023

IJMS

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The ordinary epidermal cells of various vascular plants are characterized by wavy anticlinal wall contours. This feature has not yet been reported in multicellular algal species. Here, we found that, in the leaf-like blades of the brown alga Sargassum vulgare, epidermal cells exhibit prominent waviness. Initially, the small meristodermal cells exhibit straight anticlinal contour, which during their growth becomes wavy, in a pattern highly reminiscent of that found in land plants. Waviness is restricted close to the external periclinal wall, while at inner levels the anticlinal walls become thick and even. The mechanism behind this shape relies on cortical F-actin organization. Bundles of actin filaments are organized, extending under the external periclinal wall and connecting its junctions with the anticlinal walls, constituting an interconnected network. These bundles define the sites of local thickening deposition at the anticlinal/periclinal wall junctions. These thickenings are interconnected by cellulose microfibril extensions under the external periclinal wall. Apart from the wavy anticlinal contour, outward protrusions also arise on the external periclinal wall, thus the whole epidermis exhibits a quilted appearance. Apart from highlighting a new role for F-actin in cell shaping, the comparison of this morphogenetic mechanism to that of vascular plants reveals a case of evolutionary convergence among photosynthetic organisms.

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Microtubule Regulation in Plants: From Morphological Development to Stress Adaptation

Cited by 7 publications

References 226 publications

Proteomic Analysis Reveals the Molecular Pathways Responsible for Solar UV-B Acclimation in High-altitude Malbec Berries

Proteomic Analysis Reveals the Molecular Pathways Responsible for Solar UV-B Acclimation in High-altitude Malbec Berries

Protein Disorder in Plant Stress Adaptation: From Late Embryogenesis Abundant to Other Intrinsically Disordered Proteins

F-Actin Organization and Epidermal Cell Morphogenesis in the Brown Alga Sargassum vulgare

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