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Deng X, Xiao Y, Tang X, Liu B, Lin H. Arabidopsis α-Aurora kinase plays a role in cytokinesis through regulating MAP65-3 association with microtubules at phragmoplast midzone. Nat Commun 2024; 15:3779. [PMID: 38710684 PMCID: PMC11074315 DOI: 10.1038/s41467-024-48238-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/23/2024] [Indexed: 05/08/2024] Open
Abstract
The α-Aurora kinase is a crucial regulator of spindle microtubule organization during mitosis in plants. Here, we report a post-mitotic role for α-Aurora in reorganizing the phragmoplast microtubule array. In Arabidopsis thaliana, α-Aurora relocated from spindle poles to the phragmoplast midzone, where it interacted with the microtubule cross-linker MAP65-3. In a hypomorphic α-Aurora mutant, MAP65-3 was detected on spindle microtubules, followed by a diffuse association pattern across the phragmoplast midzone. Simultaneously, phragmoplast microtubules remained belatedly in a solid disk array before transitioning to a ring shape. Microtubules at the leading edge of the matured phragmoplast were often disengaged, accompanied by conspicuous retentions of MAP65-3 at the phragmoplast interior edge. Specifically, α-Aurora phosphorylated two residues towards the C-terminus of MAP65-3. Mutation of these residues to alanines resulted in an increased association of MAP65-3 with microtubules within the phragmoplast. Consequently, the expansion of the phragmoplast was notably slower compared to wild-type cells or cells expressing a phospho-mimetic variant of MAP65-3. Moreover, mimicking phosphorylation reinstated disrupted MAP65-3 behaviors in plants with compromised α-Aurora function. Overall, our findings reveal a mechanism in which α-Aurora facilitates cytokinesis progression through phosphorylation-dependent restriction of MAP65-3 associating with microtubules at the phragmoplast midzone.
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Affiliation(s)
- Xingguang Deng
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China.
| | - Yu Xiao
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China
| | - Xiaoya Tang
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China
| | - Bo Liu
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, USA.
| | - Honghui Lin
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China.
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2
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Gao JP, Liang W, Liu CW, Xie F, Murray JD. Unraveling the rhizobial infection thread. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:2235-2245. [PMID: 38262702 DOI: 10.1093/jxb/erae017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/23/2024] [Indexed: 01/25/2024]
Abstract
Most legumes can form an endosymbiotic association with soil bacteria called rhizobia, which colonize specialized root structures called nodules where they fix nitrogen. To colonize nodule cells, rhizobia must first traverse the epidermis and outer cortical cell layers of the root. In most legumes, this involves formation of the infection thread, an intracellular structure that becomes colonized by rhizobia, guiding their passage through the outer cell layers of the root and into the newly formed nodule cells. In this brief review, we recount the early research milestones relating to the rhizobial infection thread and highlight two relatively recent advances in the symbiotic infection mechanism, the eukaryotically conserved 'MYB-AUR1-MAP' mitotic module, which links cytokinesis mechanisms to intracellular infection, and the discovery of the 'infectosome' complex, which guides infection thread growth. We also discuss the potential intertwining of the two modules and the hypothesis that cytokinesis served as a foundation for intracellular infection of symbiotic microbes.
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Affiliation(s)
- Jin-Peng Gao
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Wenjie Liang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Cheng-Wu Liu
- School of Life Sciences, Division of Life Sciences and Medicine, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, Hefei 230026, China
| | - Fang Xie
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jeremy D Murray
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- John Innes Centre, CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Norwich Research Park, Norwich NR4 7UH, UK
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3
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Schmidt-Marcec S, Parish A, Smertenko T, Hickey M, Piette BMAG, Smertenko A. The microtubule-nucleating factor MACERATOR tethers AUGMIN7 to microtubules and governs phragmoplast architecture. THE PLANT CELL 2024; 36:1072-1097. [PMID: 38079222 DOI: 10.1093/plcell/koad304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 11/08/2023] [Indexed: 04/02/2024]
Abstract
The plant cytokinetic microtubule array, called the phragmoplast, exhibits higher microtubule dynamics in its center (midzone) than at the periphery (distal zone). This behavior is known as the axial asymmetry. Despite being a major characteristic of the phragmoplast, little is known about regulators of this phenomenon. Here we address the role of microtubule nucleation in axial asymmetry by characterizing MACERATOR (MACET) proteins in Arabidopsis thaliana and Nicotiana benthamiana with a combination of genetic, biochemical, and live-cell imaging assays, using photo-convertible microtubule probes, and modeling. MACET paralogs accumulate at the shrinking microtubule ends and decrease the tubulin OFF rate. Loss of MACET4 and MACET5 function abrogates axial asymmetry by suppressing microtubule dynamicity in the midzone. MACET4 also narrows the microtubule nucleation angle at the phragmoplast leading edge and functions as a microtubule tethering factor for AUGMIN COMPLEX SUBUNIT 7 (AUG7). The macet4 macet5 double mutant shows diminished clustering of AUG7 in the phragmoplast distal zone. Knockout of AUG7 does not affect MACET4 localization, axial asymmetry, or microtubule nucleation angle, but increases phragmoplast length and slows down phragmoplast expansion. The mce4-1 mce5 aug7-1 triple knockout is not viable. Experimental data and modeling demonstrate that microtubule nucleation factors regulate phragmoplast architecture and axial asymmetry directly by generating new microtubules and indirectly by modulating the abundance of free tubulin.
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Affiliation(s)
- Sharol Schmidt-Marcec
- Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164, USA
| | - Alyssa Parish
- Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164, USA
| | - Tetyana Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164, USA
| | - Matthew Hickey
- Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164, USA
| | | | - Andrei Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164, USA
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4
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Kim P, Mahboob S, Nguyen HT, Eastman S, Fiala O, Sousek M, Gaussoin RE, Brungardt JL, Jackson-Ziems TA, Roston R, Alfano JR, Clemente TE, Guo M. Characterization of Soybean Events with Enhanced Expression of the Microtubule-Associated Protein 65-1 (MAP65-1). MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2024; 37:62-71. [PMID: 37889205 DOI: 10.1094/mpmi-09-23-0134-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Microtubule-associated protein 65-1 (MAP65-1) protein plays an essential role in plant cellular dynamics through impacting stabilization of the cytoskeleton by serving as a crosslinker of microtubules. The role of MAP65-1 in plants has been associated with phenotypic outcomes in response to various environmental stresses. The Arabidopsis MAP65-1 (AtMAP65-1) is a known virulence target of plant bacterial pathogens and is thus a component of plant immunity. Soybean events were generated that carry transgenic alleles for both AtMAP65-1 and GmMAP65-1, the soybean AtMAP65-1 homolog, under control of cauliflower mosaic virus 35S promoter. Both AtMAP65-1 and GmMAP65-1 transgenic soybeans are more resistant to challenges by the soybean bacterial pathogen Pseudomonas syringae pv. glycinea and the oomycete pathogen Phytophthora sojae, but not the soybean cyst nematode, Heterodera glycines. Soybean plants expressing AtMAP65-1 and GmMAP65-1 also display a tolerance to the herbicide oryzalin, which has a mode of action to destabilize microtubules. In addition, GmMAP65-1-expressing soybean plants show reduced cytosol ion leakage under freezing conditions, hinting that ectopic expression of GmMAP65-1 may enhance cold tolerance in soybean. Taken together, overexpression of AtMAP65-1 and GmMAP65-1 confers tolerance of soybean plants to various biotic and abiotic stresses. [Formula: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Panya Kim
- Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
| | - Samira Mahboob
- Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
| | - Hanh T Nguyen
- Department of Agronomy & Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, U.S.A
| | - Samuel Eastman
- Department of Plant Pathology, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
| | - Olivia Fiala
- Department of Agronomy & Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, U.S.A
| | - Matthew Sousek
- Department of Agronomy & Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, U.S.A
| | - Roch E Gaussoin
- Department of Agronomy & Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, U.S.A
| | - Jae L Brungardt
- Department of Plant Pathology, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
| | - Tamra A Jackson-Ziems
- Department of Plant Pathology, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
| | - Rebecca Roston
- Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A
| | - James R Alfano
- Center for Plant Science Innovation and Department of Plant Pathology, University of Nebraska-Lincoln, Lincoln, NE 68588, U.S.A. (deceased)
| | - Tom Elmo Clemente
- Department of Agronomy & Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, U.S.A
| | - Ming Guo
- Department of Agronomy & Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, U.S.A
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5
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Li L, Wang G, Zhang Y, Wang W, Zhu Y, Lyu Y, Wang Y, Zhang Y, Hong N. The functions of triple gene block proteins and coat protein of apple stem pitting virus in viral cell-to-cell movement. MOLECULAR PLANT PATHOLOGY 2024; 25:e13392. [PMID: 37837244 PMCID: PMC10782654 DOI: 10.1111/mpp.13392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023]
Abstract
Apple stem pitting virus is a species in the genus Foveavirus in the family Betaflexiviridae. Apple stem pitting virus (ASPV) commonly infects apple and pear plants grown worldwide. In this study, by integrating bimolecular fluorescence complementation, split-ubiquitin-based membrane yeast two-hybrid, and Agrobacterium-mediated expression assays, the interaction relationships and the subcellular locations of ASPV proteins TGBp1-3 and CP in Nicotiana benthamiana leaf cells were determined. Proteins CP, TGBp1, TGBp2, and TGBp3 were self-interactable, and TGBp2 played a role in the formation of perinuclear viroplasm and enhanced the colocalization of TGBp3 with CP and TGBp1. We found that the plant microfilament and endoplasmic reticulum structures were involved in the production of TGBp3 and TGBp2 vesicles, and their disruption decreased the virus accumulation level in the systemic leaves. The TGBp3 motile vesicles functioned in delivering the viral ribonucleoprotein complexes to the plasma membrane. Two cysteine residues at sites 35 and 49 of the TGBp3 sorting signal were necessary for the diffusion of TGBp3-marked vesicles. Furthermore, our results revealed that TGBp1, TGBp2, and CP could increase plasmodesmal permeability and move to the adjacent cells. This study demonstrates an interaction network and a subcellular location map of four ASPV proteins and for the first time provides insight into the functions of these proteins in the movement of a foveavirus.
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Affiliation(s)
- Liu Li
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
| | - Guoping Wang
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
| | - Yue Zhang
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Wenjun Wang
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
| | - Yiting Zhu
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
| | - Yuzhuo Lyu
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
| | - Yanxiang Wang
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
| | - Yongle Zhang
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
| | - Ni Hong
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsHuazhong Agricultural UniversityWuhanChina
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6
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Gonzalez JP, Frandsen KEH, Kesten C. The role of intrinsic disorder in binding of plant microtubule-associated proteins to the cytoskeleton. Cytoskeleton (Hoboken) 2023; 80:404-436. [PMID: 37578201 DOI: 10.1002/cm.21773] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/15/2023]
Abstract
Microtubules (MTs) represent one of the main components of the eukaryotic cytoskeleton and support numerous critical cellular functions. MTs are in principle tube-like structures that can grow and shrink in a highly dynamic manner; a process largely controlled by microtubule-associated proteins (MAPs). Plant MAPs are a phylogenetically diverse group of proteins that nonetheless share many common biophysical characteristics and often contain large stretches of intrinsic protein disorder. These intrinsically disordered regions are determinants of many MAP-MT interactions, in which structural flexibility enables low-affinity protein-protein interactions that enable a fine-tuned regulation of MT cytoskeleton dynamics. Notably, intrinsic disorder is one of the major obstacles in functional and structural studies of MAPs and represents the principal present-day challenge to decipher how MAPs interact with MTs. Here, we review plant MAPs from an intrinsic protein disorder perspective, by providing a complete and up-to-date summary of all currently known members, and address the current and future challenges in functional and structural characterization of MAPs.
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Affiliation(s)
- Jordy Perez Gonzalez
- Department for Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Kristian E H Frandsen
- Department for Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Christopher Kesten
- Department for Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
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7
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Liang M, Ji T, Wang X, Wang X, Li S, Gao L, Ma S, Tian Y. Comprehensive analyses of microtubule-associated protein MAP65 family genes in Cucurbitaceae and CsaMAP65s expression profiles in cucumber. J Appl Genet 2023; 64:393-408. [PMID: 37219731 DOI: 10.1007/s13353-023-00761-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 05/24/2023]
Abstract
MAP65 is a microtubule-binding protein family in plants and plays crucial roles in regulating cell growth and development, intercellular communication, and plant responses to various environmental stresses. However, MAP65s in Cucurbitaceae are still less understood. In this study, a total of 40 MAP65s were identified from six Cucurbitaceae species (Cucumis sativus L., Citrullus lanatus, Cucumis melo L., Cucurbita moschata, Lagenaria siceraria, and Benincasa hispida) and classified into five groups by phylogenetic analysis according to gene structures and conserved domains. A conserved domain (MAP65_ASE1) was found in all MAP65 proteins. In cucumber, we isolated six CsaMAP65s with different expression patterns in tissues including root, stem, leaf, female flower, male flower, and fruit. Subcellular localizations of CsaMAP65s verified that all CsaMAP65s were localized in microtubule and microfilament. Analyses of the promoter regions of CsaMAP65s have screened different cis-acting regulatory elements involved in growth and development and responses to hormone and stresses. In addition, CsaMAP65-5 in leaves was significantly upregulated by salt stress, and this promotion effect was higher in cucumber cultivars with salt tolerant than that without salt tolerant. CsaMAP65-1 in leaves was significantly upregulated by cold stress, and this promotion was higher in cold-tolerant cultivar than intolerant cultivar. With the genome-wide characterization and phylogenetic analysis of Cucurbitaceae MAP65s, and the expression profile of CsaMAP65s in cucumber, this study laid a foundation for further study on MAP65 functions in developmental processes and responses to abiotic stress in Cucurbitaceae species.
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Affiliation(s)
- Meiting Liang
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Tingting Ji
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xueyun Wang
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xingyi Wang
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Shihui Li
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Lihong Gao
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Si Ma
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China.
| | - Yongqiang Tian
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193, China.
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8
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Uyehara AN, Rasmussen CG. Redundant mechanisms in division plane positioning. Eur J Cell Biol 2023; 102:151308. [PMID: 36921356 DOI: 10.1016/j.ejcb.2023.151308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/05/2023] [Accepted: 03/11/2023] [Indexed: 03/18/2023] Open
Abstract
Redundancies in plant cell division contribute to the maintenance of proper division plane orientation. Here we highlight three types of redundancy: 1) Temporal redundancy, or correction of earlier defects that results in proper final positioning, 2) Genetic redundancy, or functional compensation by homologous genes, and 3) Synthetic redundancy, or redundancy within or between pathways that contribute to proper division plane orientation. Understanding the types of redundant mechanisms involved provides insight into current models of division plane orientation and opens up new avenues for exploration.
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Affiliation(s)
- Aimee N Uyehara
- Department of Botany and Plant Sciences, Center for Plant Cell Biology, University of California, Riverside, USA
| | - Carolyn G Rasmussen
- Department of Botany and Plant Sciences, Center for Plant Cell Biology, University of California, Riverside, USA.
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9
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Fang J, Chun Y, Guo T, Ren M, Zhao J, Li X. Rice kinesin-related protein STD1 and microtubule-associated protein MAP65-5 cooperatively control microtubule bundling. PLANTA 2023; 257:71. [PMID: 36862199 DOI: 10.1007/s00425-023-04106-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
STD1 specifically interacts with MAP65-5 in rice and they cooperatively control microtubule bundles in phragmoplast expansion during cell division. Microtubules play critical roles during the cell cycle progression in the plant cell. We previously reported that STEMLESS DWARF 1 (STD1), a kinesin-related protein, was localized specifically to the phragmoplast midzone during telophase to regulate the lateral expansion of phragmoplast in rice (Oryza sativa). However, how STD1 regulates microtubule organization remains unknown. Here, we found that STD1 interacted directly with MAP65-5, a member of the microtubule-associated proteins (MAPs). Both STD1 and MAP65-5 could form homodimers and bundle microtubules individually. Compared with MAP65-5, the microtubules bundled by STD1 were disassembled completely into single microtubules after adding ATP. Conversely, the interaction of STD1 with MAP65-5 enhanced the microtubule bundling. These results suggest STD1 and MAP65-5 might cooperatively regulate microtubule organization in the phragmoplast at telophase.
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Affiliation(s)
- Jingjing Fang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yan Chun
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tingting Guo
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, China
| | - Mengmeng Ren
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jinfeng Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xueyong Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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10
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Imaging the Plant Cytoskeleton by High-Pressure Freezing and Electron Tomography. Methods Mol Biol 2023; 2604:89-102. [PMID: 36773227 DOI: 10.1007/978-1-0716-2867-6_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Electron tomography (ET) imaging of high-pressure frozen/freeze-substituted samples provides a unique opportunity to study structural details of organelles and cytoskeletal arrays in plant cells. In this chapter, we discuss approaches for sample preparation by cryofixation at high pressure, freeze substitution, and resin embedding. We also include pipelines for data collection for electron tomography at ambient temperature, tomogram calculation, and segmentation.
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11
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Guo Y, Bao Z, Deng Y, Li Y, Wang P. Protein subcellular localization and functional studies in horticultural research: problems, solutions, and new approaches. HORTICULTURE RESEARCH 2023; 10:uhac271. [PMID: 36789255 PMCID: PMC9923208 DOI: 10.1093/hr/uhac271] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/01/2022] [Indexed: 06/18/2023]
Affiliation(s)
| | | | - Yaling Deng
- Key Laboratory of Horticultural Plant Biology (MOE), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei Province 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Yuhui Li
- Key Laboratory of Horticultural Plant Biology (MOE), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei Province 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
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12
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Schmidt-Marcec S, Ross A, Smertenko A. Quantification of Microtubule-Bundling Activity of MAPs Using TIRF Microscopy. Methods Mol Biol 2023; 2604:1-12. [PMID: 36773221 DOI: 10.1007/978-1-0716-2867-6_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Cross-linking of microtubules by microtubule-associated proteins (MAPs) results in the formation of microtubule bundles. It has been shown that a majority of microtubules in interphase plant cells are bundled. Bundling can contribute to maintaining structural stability and sustaining spatial organization of microtubule arrays. While bundling can be readily detected by an electron or fluorescent microscope, quantifying this activity remains technically challenging. Here we describe a method for quantifying microtubule-bundling in vitro using green and red stable microtubules. Furthermore, this method distinguishes between different types of microtubule-microtubule interactions: bundling, annealing, and branching. Our technique can be used to compare bundling activity of different MAPs and generate parameters for modeling their contribution to organization and dynamics of microtubule arrays.
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Affiliation(s)
| | - Austin Ross
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
| | - Andrei Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA.
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13
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Lan M, Liu X, Kang E, Fu Y, Zhu L. ARK2 stabilizes the plus-end of microtubules and promotes microtubule bundling in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:100-116. [PMID: 36169006 DOI: 10.1111/jipb.13373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Microtubule dynamics and organization are important for plant cell morphogenesis and development. The microtubule-based motor protein kinesins are mainly responsible for the transport of some organelles and vesicles, although several have also been shown to regulate microtubule organization. The ARMADILLO REPEAT KINESIN (ARK) family is a plant-specific motor protein subfamily that consists of three members (ARK1, ARK2, and ARK3) in Arabidopsis thaliana. ARK2 has been shown to participate in root epidermal cell morphogenesis. However, whether and how ARK2 associates with microtubules needs further elucidation. Here, we demonstrated that ARK2 co-localizes with microtubules and facilitates microtubule bundling in vitro and in vivo. Pharmacological assays and microtubule dynamics analyses indicated that ARK2 stabilizes cortical microtubules. Live-cell imaging revealed that ARK2 moves along cortical microtubules in a processive mode and localizes both at the plus-end and the sidewall of microtubules. ARK2 therefore tracks and stabilizes the growing plus-ends of microtubules, which facilitates the formation of parallel microtubule bundles.
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Affiliation(s)
- Miao Lan
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xianan Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Erfang Kang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Ying Fu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Lei Zhu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
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14
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Kumar S, Jeevaraj T, Yunus MH, Chakraborty S, Chakraborty N. The plant cytoskeleton takes center stage in abiotic stress responses and resilience. PLANT, CELL & ENVIRONMENT 2023; 46:5-22. [PMID: 36151598 DOI: 10.1111/pce.14450] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 09/16/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Stress resilience behaviours in plants are defensive mechanisms that develop under adverse environmental conditions to promote growth, development and yield. Over the past decades, improving stress resilience, especially in crop species, has been a focus of intense research for global food security and economic growth. Plants have evolved specific mechanisms to sense external stress and transmit information to the cell interior and generate appropriate responses. Plant cytoskeleton, comprising microtubules and actin filaments, takes a center stage in stress-induced signalling pathways, either as a direct target or as a signal transducer. In the past few years, it has become apparent that the function of the plant cytoskeleton and other associated proteins are not merely limited to elementary processes of cell growth and proliferation, but they also function in stress response and resilience. This review summarizes recent advances in the role of plant cytoskeleton and associated proteins in abiotic stress management. We provide a thorough overview of the mechanisms that plant cells employ to withstand different abiotic stimuli such as hypersalinity, dehydration, high temperature and cold, among others. We also discuss the crucial role of the plant cytoskeleton in organellar positioning under the influence of high light intensity.
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Affiliation(s)
- Sunil Kumar
- Stress Biology, National Institute of Plant Genome Research, New Delhi, India
| | - Theboral Jeevaraj
- Stress Biology, National Institute of Plant Genome Research, New Delhi, India
| | - Mohd H Yunus
- Stress Biology, National Institute of Plant Genome Research, New Delhi, India
| | - Subhra Chakraborty
- Stress Biology, National Institute of Plant Genome Research, New Delhi, India
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15
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Hickey K, Wood M, Sexton T, Sahin Y, Nazarov T, Fisher J, Sanguinet KA, Cousins A, Kirchhoff H, Smertenko A. Drought Tolerance Strategies and Autophagy in Resilient Wheat Genotypes. Cells 2022; 11:cells11111765. [PMID: 35681460 PMCID: PMC9179661 DOI: 10.3390/cells11111765] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/14/2022] [Accepted: 05/15/2022] [Indexed: 01/18/2023] Open
Abstract
Drought resiliency strategies combine developmental, physiological, cellular, and molecular mechanisms. Here, we compare drought responses in two resilient spring wheat (Triticum aestivum) genotypes: a well-studied drought-resilient Drysdale and a resilient genotype from the US Pacific North-West Hollis. While both genotypes utilize higher water use efficiency through the reduction of stomatal conductance, other mechanisms differ. First, Hollis deploys the drought escape mechanism to a greater extent than Drysdale by accelerating the flowering time and reducing root growth. Second, Drysdale uses physiological mechanisms such as non-photochemical quenching (NPQ) to dissipate the excess of harvested light energy and sustain higher Fv/Fm and ϕPSII, whereas Hollis maintains constant NPQ but lower Fv/Fm and ϕPSII values. Furthermore, more electron donors of the electron transport chain are in the oxidized state in Hollis than in Drysdale. Third, many ROS homeostasis parameters, including peroxisome abundance, transcription of peroxisome biogenesis genes PEX11 and CAT, catalase protein level, and enzymatic activity, are higher in Hollis than in Drysdale. Fourth, transcription of autophagy flux marker ATG8.4 is upregulated to a greater degree in Hollis than in Drysdale under drought, whereas relative ATG8 protein abundance under drought stress is lower in Hollis than in Drysdale. These data demonstrate the activation of autophagy in both genotypes and a greater autophagic flux in Hollis. In conclusion, wheat varieties utilize different drought tolerance mechanisms. Combining these mechanisms within one genotype offers a promising strategy to advance crop resiliency.
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Affiliation(s)
- Kahleen Hickey
- Institute of Biological Chemistry, Washington State University, 1772 NE Stadium Way, P.O. Box 99163, Pullman, WA 99164, USA; (K.H.); (M.W.); (Y.S.); (T.N.); (J.F.)
| | - Magnus Wood
- Institute of Biological Chemistry, Washington State University, 1772 NE Stadium Way, P.O. Box 99163, Pullman, WA 99164, USA; (K.H.); (M.W.); (Y.S.); (T.N.); (J.F.)
| | - Tom Sexton
- School of Biological Sciences, Washington State University, P.O. Box 644236, Pullman, WA 99164, USA; (T.S.); (A.C.)
| | - Yunus Sahin
- Institute of Biological Chemistry, Washington State University, 1772 NE Stadium Way, P.O. Box 99163, Pullman, WA 99164, USA; (K.H.); (M.W.); (Y.S.); (T.N.); (J.F.)
| | - Taras Nazarov
- Institute of Biological Chemistry, Washington State University, 1772 NE Stadium Way, P.O. Box 99163, Pullman, WA 99164, USA; (K.H.); (M.W.); (Y.S.); (T.N.); (J.F.)
| | - Jessica Fisher
- Institute of Biological Chemistry, Washington State University, 1772 NE Stadium Way, P.O. Box 99163, Pullman, WA 99164, USA; (K.H.); (M.W.); (Y.S.); (T.N.); (J.F.)
| | - Karen A. Sanguinet
- Department of Crop and Soil Sciences, Washington State University, P.O. Box 646420, Pullman, WA 99164, USA;
| | - Asaph Cousins
- School of Biological Sciences, Washington State University, P.O. Box 644236, Pullman, WA 99164, USA; (T.S.); (A.C.)
| | - Helmut Kirchhoff
- Institute of Biological Chemistry, Washington State University, 1772 NE Stadium Way, P.O. Box 99163, Pullman, WA 99164, USA; (K.H.); (M.W.); (Y.S.); (T.N.); (J.F.)
- Correspondence: (H.K.); (A.S.)
| | - Andrei Smertenko
- Institute of Biological Chemistry, Washington State University, 1772 NE Stadium Way, P.O. Box 99163, Pullman, WA 99164, USA; (K.H.); (M.W.); (Y.S.); (T.N.); (J.F.)
- Correspondence: (H.K.); (A.S.)
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16
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Gu Y, Rasmussen CG. Cell biology of primary cell wall synthesis in plants. THE PLANT CELL 2022; 34:103-128. [PMID: 34613413 PMCID: PMC8774047 DOI: 10.1093/plcell/koab249] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 10/01/2021] [Indexed: 05/07/2023]
Abstract
Building a complex structure such as the cell wall, with many individual parts that need to be assembled correctly from distinct sources within the cell, is a well-orchestrated process. Additional complexity is required to mediate dynamic responses to environmental and developmental cues. Enzymes, sugars, and other cell wall components are constantly and actively transported to and from the plasma membrane during diffuse growth. Cell wall components are transported in vesicles on cytoskeletal tracks composed of microtubules and actin filaments. Many of these components, and additional proteins, vesicles, and lipids are trafficked to and from the cell plate during cytokinesis. In this review, we first discuss how the cytoskeleton is initially organized to add new cell wall material or to build a new cell wall, focusing on similarities during these processes. Next, we discuss how polysaccharides and enzymes that build the cell wall are trafficked to the correct location by motor proteins and through other interactions with the cytoskeleton. Finally, we discuss some of the special features of newly formed cell walls generated during cytokinesis.
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Affiliation(s)
- Ying Gu
- Author for correspondence: (Y.G.), (C.G.R.)
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17
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Dubas E, Castillo AM, Żur I, Krzewska M, Vallés MP. Microtubule organization changes severely after mannitol and n-butanol treatments inducing microspore embryogenesis in bread wheat. BMC PLANT BIOLOGY 2021; 21:586. [PMID: 34886809 PMCID: PMC8656030 DOI: 10.1186/s12870-021-03345-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND A mannitol stress treatment and a subsequent application of n-butanol, known as a microtubule-disrupting agent, enhance microspore embryogenesis (ME) induction and plant regeneration in bread wheat. To characterize changes in cortical (CMT) and endoplasmic (EMT) microtubules organization and dynamics, associated with ME induction treatments, immunocytochemistry studies complemented by confocal laser scanning microscopy (CLSM) were accomplished. This technique has allowed us to perform advanced 3- and 4D studies of MT architecture. The degree of MT fragmentation was examined by the relative fluorescence intensity quantification. RESULTS In uni-nucleated mannitol-treated microspores, severe CMT and EMT fragmentation occurs, although a complex network of short EMT bundles protected the nucleus. Additional treatment with n-butanol resulted in further depolymerization of both CMT and EMT, simultaneously with the formation of MT aggregates in the perinuclear region. Some aggregates resembled a preprophase band. In addition, a portion of the microspores progressed to the first mitotic division during the treatments. Bi-nucleate pollen-like structures showed a high MT depolymerization after mannitol treatment and numerous EMT bundles around the vegetative and generative nuclei after n-butanol. Interestingly, bi-nucleate symmetric structures showed prominent stabilization of EMT. CONCLUSIONS Fragmentation and stabilization of microtubules induced by mannitol- and n-butanol lead to new configurations essential for the induction of microspore embryogenesis in bread wheat. These results provide robust insight into MT dynamics during EM induction and open avenues to address newly targeted treatments to induce ME in recalcitrant species.
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Affiliation(s)
- E Dubas
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239, Kraków, Poland.
| | - A M Castillo
- Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Avda Montañana 1005, 50059, Zaragoza, Spain
| | - I Żur
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239, Kraków, Poland
| | - M Krzewska
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239, Kraków, Poland
| | - M P Vallés
- Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Avda Montañana 1005, 50059, Zaragoza, Spain.
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18
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Wang Y, Wang G, Bai J, Zhang Y, Wang Y, Wen S, Li L, Yang Z, Hong N. A novel Actinidia cytorhabdovirus characterized using genomic and viral protein interaction features. MOLECULAR PLANT PATHOLOGY 2021; 22:1271-1287. [PMID: 34288324 PMCID: PMC8435229 DOI: 10.1111/mpp.13110] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 06/29/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
A novel cytorhabdovirus, tentatively named Actinidia virus D (AcVD), was identified from kiwifruit (Actinidia chinensis) in China using high-throughput sequencing technology. The genome of AcVD consists of 13,589 nucleotides and is organized into seven open reading frames (ORFs) in its antisense strand, coding for proteins in the order N-P-P3-M-G-P6-L. The ORFs were flanked by a 3' leader sequence and a 5' trailer sequence and are separated by conserved intergenic junctions. The genome sequence of AcVD was 44.6%-51.5% identical to those of reported cytorhabdoviruses. The proteins encoded by AcVD shared the highest sequence identities, ranging from 27.3% (P6) to 44.5% (L), with the respective proteins encoded by reported cytorhabdoviruses. Phylogenetic analysis revealed that AcVD clustered together with the cytorhabdovirus Wuhan insect virus 4. The subcellular locations of the viral proteins N, P, P3, M, G, and P6 in epidermal cells of Nicotiana benthamiana leaves were determined. The M protein of AcVD uniquely formed filament structures and was associated with microtubules. Bimolecular fluorescence complementation assays showed that three proteins, N, P, and M, self-interact, protein N plays a role in the formation of cytoplasm viroplasm, and protein M recruits N, P, P3, and G to microtubules. In addition, numerous paired proteins interact in the nucleus. This study presents the first evidence of a cytorhabdovirus infecting kiwifruit plants and full location and interaction maps to gain insight into viral protein functions.
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Affiliation(s)
- Yanxiang Wang
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Horticultural Crop (Fruit Trees) Biology and Germplasm Creation of the Ministry of AgricultureHuazhong Agricultural UniversityWuhanChina
| | - Guoping Wang
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Horticultural Crop (Fruit Trees) Biology and Germplasm Creation of the Ministry of AgricultureHuazhong Agricultural UniversityWuhanChina
| | - Jianyu Bai
- Laboratory of Fruit Trees DiseaseInstitute of Economic ForestryXinjiang Academy of Forestry SciencesUrumqiChina
| | - Yongle Zhang
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Ying Wang
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Shaohua Wen
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Liu Li
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Zuokun Yang
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Ni Hong
- Key Laboratory of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Horticultural Crop (Fruit Trees) Biology and Germplasm Creation of the Ministry of AgricultureHuazhong Agricultural UniversityWuhanChina
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19
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Zhang L, Smertenko T, Fahy D, Koteyeva N, Moroz N, Kuchařová A, Novák D, Manoilov E, Smertenko P, Galva C, Šamaj J, Kostyukova AS, Sedbrook JC, Smertenko A. Analysis of formin functions during cytokinesis using specific inhibitor SMIFH2. PLANT PHYSIOLOGY 2021; 186:945-963. [PMID: 33620500 PMCID: PMC8195507 DOI: 10.1093/plphys/kiab085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/03/2021] [Indexed: 05/10/2023]
Abstract
The phragmoplast separates daughter cells during cytokinesis by constructing the cell plate, which depends on interaction between cytoskeleton and membrane compartments. Proteins responsible for these interactions remain unknown, but formins can link cytoskeleton with membranes and several members of formin protein family localize to the cell plate. Progress in functional characterization of formins in cytokinesis is hindered by functional redundancies within the large formin gene family. We addressed this limitation by employing Small Molecular Inhibitor of Formin Homology 2 (SMIFH2), a small-molecule inhibitor of formins. Treatment of tobacco (Nicotiana tabacum) tissue culture cells with SMIFH2 perturbed localization of actin at the cell plate; slowed down both microtubule polymerization and phragmoplast expansion; diminished association of dynamin-related proteins with the cell plate independently of actin and microtubules; and caused cell plate swelling. Another impact of SMIFH2 was shortening of the END BINDING1b (EB1b) and EB1c comets on the growing microtubule plus ends in N. tabacum tissue culture cells and Arabidopsis thaliana cotyledon epidermis cells. The shape of the EB1 comets in the SMIFH2-treated cells resembled that of the knockdown mutant of plant Xenopus Microtubule-Associated protein of 215 kDa (XMAP215) homolog MICROTUBULE ORGANIZATION 1/GEMINI 1 (MOR1/GEM1). This outcome suggests that formins promote elongation of tubulin flares on the growing plus ends. Formins AtFH1 (A. thaliana Formin Homology 1) and AtFH8 can also interact with EB1. Besides cytokinesis, formins function in the mitotic spindle assembly and metaphase to anaphase transition. Our data suggest that during cytokinesis formins function in: (1) promoting microtubule polymerization; (2) nucleating F-actin at the cell plate; (3) retaining dynamin-related proteins at the cell plate; and (4) remodeling of the cell plate membrane.
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Affiliation(s)
- Laining Zhang
- Institute of Biological Chemistry, Washington State University, Pullman, Washington, USA
| | - Tetyana Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, Washington, USA
| | - Deirdre Fahy
- Institute of Biological Chemistry, Washington State University, Pullman, Washington, USA
| | - Nuria Koteyeva
- Laboratory of Anatomy and Morphology, Komarov Botanical Institute of Russian Academy of Sciences, St. Petersburg 197376, Russia
| | - Natalia Moroz
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington, USA
| | - Anna Kuchařová
- Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, 783 71 Olomouc, Czech Republic
| | - Dominik Novák
- Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, 783 71 Olomouc, Czech Republic
| | - Eduard Manoilov
- V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Kyiv, Ukraine
| | - Petro Smertenko
- V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Kyiv, Ukraine
| | - Charitha Galva
- School of Biological Sciences, Illinois State University, Normal, Illinois, USA
| | - Jozef Šamaj
- Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, 783 71 Olomouc, Czech Republic
| | - Alla S. Kostyukova
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington, USA
| | - John C. Sedbrook
- School of Biological Sciences, Illinois State University, Normal, Illinois, USA
| | - Andrei Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, Washington, USA
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20
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Winkler J, Mylle E, De Meyer A, Pavie B, Merchie J, Grones P, Van Damme D. Visualizing protein-protein interactions in plants by rapamycin-dependent delocalization. THE PLANT CELL 2021; 33:1101-1117. [PMID: 33793859 PMCID: PMC7612334 DOI: 10.1093/plcell/koab004] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 12/15/2020] [Indexed: 05/19/2023]
Abstract
Identifying protein-protein interactions (PPIs) is crucial for understanding biological processes. Many PPI tools are available, yet only some function within the context of a plant cell. Narrowing down even further, only a few tools allow complex multi-protein interactions to be visualized. Here, we present a conditional in vivo PPI tool for plant research that meets these criteria. Knocksideways in plants (KSP) is based on the ability of rapamycin to alter the localization of a bait protein and its interactors via the heterodimerization of FKBP and FRB domains. KSP is inherently free from many limitations of other PPI systems. This in vivo tool does not require spatial proximity of the bait and prey fluorophores and it is compatible with a broad range of fluorophores. KSP is also a conditional tool and therefore the visualization of the proteins in the absence of rapamycin acts as an internal control. We used KSP to confirm previously identified interactions in Nicotiana benthamiana leaf epidermal cells. Furthermore, the scripts that we generated allow the interactions to be quantified at high throughput. Finally, we demonstrate that KSP can easily be used to visualize complex multi-protein interactions. KSP is therefore a versatile tool with unique characteristics and applications that complements other plant PPI methods.
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Affiliation(s)
- Joanna Winkler
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Evelien Mylle
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Andreas De Meyer
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | | | - Julie Merchie
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Peter Grones
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Daniёl Van Damme
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
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21
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Martinez P, Dixit R, Balkunde RS, Zhang A, O'Leary SE, Brakke KA, Rasmussen CG. TANGLED1 mediates microtubule interactions that may promote division plane positioning in maize. J Cell Biol 2021; 219:151878. [PMID: 32568386 PMCID: PMC7401798 DOI: 10.1083/jcb.201907184] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 12/17/2019] [Accepted: 04/27/2020] [Indexed: 12/15/2022] Open
Abstract
The microtubule cytoskeleton serves as a dynamic structural framework for mitosis in eukaryotic cells. TANGLED1 (TAN1) is a microtubule-binding protein that localizes to the division site and mitotic microtubules and plays a critical role in division plane orientation in plants. Here, in vitro experiments demonstrate that TAN1 directly binds microtubules, mediating microtubule zippering or end-on microtubule interactions, depending on their contact angle. Maize tan1 mutant cells improperly position the preprophase band (PPB), which predicts the future division site. However, cell shape–based modeling indicates that PPB positioning defects are likely a consequence of abnormal cell shapes and not due to TAN1 absence. In telophase, colocalization of growing microtubules ends from the phragmoplast with TAN1 at the division site suggests that TAN1 interacts with microtubule tips end-on. Together, our results suggest that TAN1 contributes to microtubule organization to ensure proper division plane orientation.
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Affiliation(s)
- Pablo Martinez
- Biochemistry and Molecular Biology Graduate Program, University of California, Riverside, CA
| | - Ram Dixit
- Department of Biology and Center for Engineering Mechanobiology, Washington University in St. Louis, St. Louis, MO
| | - Rachappa S Balkunde
- Department of Biology and Center for Engineering Mechanobiology, Washington University in St. Louis, St. Louis, MO
| | - Antonia Zhang
- Department of Biochemistry, University of California, Riverside, CA
| | - Seán E O'Leary
- Biochemistry and Molecular Biology Graduate Program, University of California, Riverside, CA.,Department of Biochemistry, University of California, Riverside, CA
| | - Kenneth A Brakke
- Department of Mathematics, Susquehanna University, Selinsgrove, PA
| | - Carolyn G Rasmussen
- Biochemistry and Molecular Biology Graduate Program, University of California, Riverside, CA.,Department of Botany and Plant Sciences, Center for Plant Cell Biology, Institute for Integrative Genome Biology, University of California, Riverside, CA
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22
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Wang J, Yan X, Chen H, Feng J, Han R. Enhanced UV-B radiation affects AUR1 regulation of mitotic spindle morphology leading to aberrant mitosis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 159:160-170. [PMID: 33370689 DOI: 10.1016/j.plaphy.2020.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/16/2020] [Indexed: 06/12/2023]
Abstract
Enhanced UV-B radiation can lead to a variety of stress responses, including effects on cell cycle regulation and mitosis. Aurora kinases are part of the serine/threonine kinase family and play important roles in cell cycle regulation and mitosis. We hypothesize that there may be a connection between these two processes. In this study, the dynamics of chromosomal (H2B-YFP) and AUR1-GFP changes after enhanced UV-B radiation were observed using confocal microscopy, and gene and protein expression patterns under UV-B stress were quantified using RT-qPCR and Western blotting techniques. We analyzed the responses of the AUR1 overexpression to UV-B stress. We measured maximum quantum yield of photosystem Ⅱ as a proxy for UV-B stress. The recovery capacity of AUR1 overexpression strains was analyzed. In our research, we observed that enhanced UV-B radiation affects the subcellular positioning of AUR1, resulting in abnormalities in the positioning and location of the spindle at the poles, which ultimately affects the separation of chromosomes, resulting in "partition-bundle division" and the incorrect direction of division. At the same time, our results also indicated that low-dose UV-B can induce the expression of AUR1, and this overexpression of AUR1 can alleviate the damage caused by UV-B radiation. In summary, the results of our study show that enhanced UV-B radiation can change the activity and expression of AUR1, which is one of the causes of abnormal chromosome segregation. AUR1 participates in the response to UV-B stress, and, to a certain extent, can improve the UV-B tolerance of plants.
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Affiliation(s)
- Jianhua Wang
- College of Life Science, Shanxi Normal University, Linfen, Shanxi, 041004, People's Republic of China; Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response (Shanxi Normal University) in Shanxi Province, Linfen, Shanxi, 041000, People's Republic of China.
| | - Xiaoyan Yan
- College of Life Science, Shanxi Normal University, Linfen, Shanxi, 041004, People's Republic of China; Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response (Shanxi Normal University) in Shanxi Province, Linfen, Shanxi, 041000, People's Republic of China.
| | - Huize Chen
- College of Life Science, Shanxi Normal University, Linfen, Shanxi, 041004, People's Republic of China; Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response (Shanxi Normal University) in Shanxi Province, Linfen, Shanxi, 041000, People's Republic of China.
| | - Jinlin Feng
- College of Life Science, Shanxi Normal University, Linfen, Shanxi, 041004, People's Republic of China; Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response (Shanxi Normal University) in Shanxi Province, Linfen, Shanxi, 041000, People's Republic of China.
| | - Rong Han
- College of Life Science, Shanxi Normal University, Linfen, Shanxi, 041004, People's Republic of China; Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response (Shanxi Normal University) in Shanxi Province, Linfen, Shanxi, 041000, People's Republic of China.
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23
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Guan L, Yang S, Li S, Liu Y, Liu Y, Yang Y, Qin G, Wang H, Wu T, Wang Z, Feng X, Wu Y, Zhu JK, Li X, Li L. AtSEC22 Regulates Cell Morphogenesis via Affecting Cytoskeleton Organization and Stabilities. FRONTIERS IN PLANT SCIENCE 2021; 12:635732. [PMID: 34149743 PMCID: PMC8211912 DOI: 10.3389/fpls.2021.635732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 04/01/2021] [Indexed: 05/03/2023]
Abstract
The plant cytoskeleton forms a stereoscopic network that regulates cell morphogenesis. The cytoskeleton also provides tracks for trafficking of vesicles to the target membrane. Fusion of vesicles with the target membrane is promoted by SNARE proteins, etc. The vesicle-SNARE, Sec22, regulates membrane trafficking between the ER and Golgi in yeast and mammals. Arabidopsis AtSEC22 might also regulate early secretion and is essential for gametophyte development. However, the role of AtSEC22 in plant development is unclear. To clarify the role of AtSEC22 in the regulation of plant development, we isolated an AtSEC22 knock-down mutant, atsec22-4, and found that cell morphogenesis and development were seriously disturbed. atsec22-4 exhibited shorter primary roots (PRs), dwarf plants, and partial abortion. More interestingly, the atsec22-4 mutant had less trichomes with altered morphology, irregular stomata, and pavement cells, suggesting that cell morphogenesis was perturbed. Further analyses revealed that in atsec22-4, vesicle trafficking was blocked, resulting in the trapping of proteins in the ER and collapse of structures of the ER and Golgi apparatus. Furthermore, AtSEC22 defects resulted in impaired organization and stability of the cytoskeleton in atsec22-4. Our findings revealed essential roles of AtSEC22 in membrane trafficking and cytoskeleton dynamics during plant development.
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Affiliation(s)
- Li Guan
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Shurui Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Shenglin Li
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Yu Liu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Yuqi Liu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Yi Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Guochen Qin
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Haihai Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Tao Wu
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Zhigang Wang
- School of Life Sciences and Agriculture and Forestry, Qiqihar University, Qiqihar, China
| | - Xianzhong Feng
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Yongrui Wu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xugang Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Lixin Li
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
- *Correspondence: Lixin Li,
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24
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Lian N, Wang X, Jing Y, Lin J. Regulation of cytoskeleton-associated protein activities: Linking cellular signals to plant cytoskeletal function. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:241-250. [PMID: 33274838 DOI: 10.1111/jipb.13046] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 12/01/2020] [Indexed: 05/24/2023]
Abstract
The plant cytoskeleton undergoes dynamic remodeling in response to diverse developmental and environmental cues. Remodeling of the cytoskeleton coordinates growth in plant cells, including trafficking and exocytosis of membrane and wall components during cell expansion, and regulation of hypocotyl elongation in response to light. Cytoskeletal remodeling also has key functions in disease resistance and abiotic stress responses. Many stimuli result in altered activity of cytoskeleton-associated proteins, microtubule-associated proteins (MAPs) and actin-binding proteins (ABPs). MAPs and ABPs are the main players determining the spatiotemporally dynamic nature of the cytoskeleton, functioning in a sensory hub that decodes signals to modulate plant cytoskeletal behavior. Moreover, MAP and ABP activities and levels are precisely regulated during development and environmental responses, but our understanding of this process remains limited. In this review, we summarize the evidence linking multiple signaling pathways, MAP and ABP activities and levels, and cytoskeletal rearrangements in plant cells. We highlight advances in elucidating the multiple mechanisms that regulate MAP and ABP activities and levels, including calcium and calmodulin signaling, ROP GTPase activity, phospholipid signaling, and post-translational modifications.
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Affiliation(s)
- Na Lian
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Xinwei Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Yanping Jing
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Jinxing Lin
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
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25
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Higaki T, Akita K, Katoh K. Coefficient of variation as an image-intensity metric for cytoskeleton bundling. Sci Rep 2020; 10:22187. [PMID: 33349642 PMCID: PMC7752905 DOI: 10.1038/s41598-020-79136-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/27/2020] [Indexed: 12/17/2022] Open
Abstract
The evaluation of cytoskeletal bundling is a fundamental experimental method in the field of cell biology. Although the skewness of the pixel intensity distribution derived from fluorescently-labeled cytoskeletons has been widely used as a metric to evaluate the degree of bundling in digital microscopy images, its versatility has not been fully validated. Here, we applied the coefficient of variation (CV) of intensity values as an alternative metric, and compared its performance with skewness. In synthetic images representing extremely bundled conditions, the CV successfully detected degrees of bundling that could not be distinguished by skewness. On actual microscopy images, CV was better than skewness, especially on variable-angle epifluorescence microscopic images or stimulated emission depletion and confocal microscopy images of very small areas of around 1 μm2. When blur or noise was added to synthetic images, CV was found to be robust to blur but deleteriously affected by noise, whereas skewness was robust to noise but deleteriously affected by blur. For confocal images, CV and skewness showed similar sensitivity to noise, possibly because optical blurring is often present in microscopy images. Therefore, in practical use with actual microscopy images, CV may be more appropriate than skewness, unless the image is extremely noisy.
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Affiliation(s)
- Takumi Higaki
- International Research Organization for Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan.
| | - Kae Akita
- Department of Chemical Biological Science, Faculty of Science, Japan Women's University, 2-8-1 Mejirodai, Bunkyo-ku, Tokyo, Japan
| | - Kaoru Katoh
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
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26
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Ma D, Han R. Microtubule organization defects in Arabidopsis thaliana. PLANT BIOLOGY (STUTTGART, GERMANY) 2020; 22:971-980. [PMID: 32215997 DOI: 10.1111/plb.13114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/12/2020] [Indexed: 05/15/2023]
Abstract
Microtubules (MT) are critical cytoskeletal filaments that have several functions in cell morphogenesis, cell division, vesicle transport and cytoplasmic separation in the spatiotemporal regulation of eukaryotic cells. Formation of MT requires the co-interaction of MT nucleation and α-β-tubulins, as well as MT-associated proteins (MAP). Many key MAP contributing to MT nucleation and elongation are essential for MT nucleation and regulation of MT dynamics, and are conserved in the plant kingdom. Therefore, the deletion or decrease of γ-tubulin ring complex (γTuRC) components and related MAP, such as the augmin complex, NEDD1, MZT1, EB1, MAP65, etc., in Arabidopsis thaliana results in MT organizational defects in the spindle and phragmoplast MT, as well as in chromosome defects. In addition, similar defects in MT organization and chromosome structure have been observed in plants under abiotic stress conditions, such as under high UV-B radiation. The MT can sense the signal from UV-B radiation, resulting in abnormal MT arrangement. Further studies are required to determine whether the abnormal chromosomes induced by UV-B radiation can be attributed to the involvement of abnormal MT arrays in chromosome migration after DNA damage.
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Affiliation(s)
- D Ma
- College of Life Science, Shanxi Normal University, Linfen, China
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response (Shanxi Normal University) in Shanxi Province, Linfen, China
| | - R Han
- College of Life Science, Shanxi Normal University, Linfen, China
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response (Shanxi Normal University) in Shanxi Province, Linfen, China
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27
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Thomas EC, Ismael A, Moore JK. Ase1 domains dynamically slow anaphase spindle elongation and recruit Bim1 to the midzone. Mol Biol Cell 2020; 31:2733-2747. [PMID: 32997572 PMCID: PMC7927185 DOI: 10.1091/mbc.e20-07-0493-t] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
How cells regulate microtubule cross-linking activity to control the rate and duration of spindle elongation during anaphase is poorly understood. In this study, we test the hypothesis that PRC1/Ase1 proteins use distinct microtubule-binding domains to control the spindle elongation rate. Using the budding yeast Ase1, we identify unique contributions for the spectrin and carboxy-terminal domains during different phases of spindle elongation. We show that the spectrin domain uses conserved basic residues to promote the recruitment of Ase1 to the midzone before anaphase onset and slow spindle elongation during early anaphase. In contrast, a partial Ase1 carboxy-terminal truncation fails to form a stable midzone in late anaphase, produces higher elongation rates after early anaphase, and exhibits frequent spindle collapses. We find that the carboxy-terminal domain interacts with the plus-end tracking protein EB1/Bim1 and recruits Bim1 to the midzone to maintain midzone length. Overall, our results suggest that the Ase1 domains provide cells with a modular system to tune midzone activity and control elongation rates.
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Affiliation(s)
- Ezekiel C Thomas
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045
| | - Amber Ismael
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045.,Fred Hutchinson Cancer Research Center, Seattle, WA 98109
| | - Jeffrey K Moore
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045
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28
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Smertenko T, Turner G, Fahy D, Brew-Appiah RAT, Alfaro-Aco R, de Almeida Engler J, Sanguinet KA, Smertenko A. Brachypodium distachyon MAP20 functions in metaxylem pit development and contributes to drought recovery. THE NEW PHYTOLOGIST 2020; 227:1681-1695. [PMID: 31863702 DOI: 10.1111/nph.16383] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
Pits are regions in the cell walls of plant tracheary elements that lack secondary walls. Each pit consists of a space within the secondary wall called a pit chamber, and a modified primary wall called the pit membrane. The pit membrane facilitates transport of solutions between vessel cells and restricts embolisms during drought. Here we analyzed the role of an angiosperm-specific TPX2-like microtubule protein MAP20 in pit formation using Brachypodium distachyon as a model system. Live cell imaging was used to analyze the interaction of MAP20 with microtubules and the impact of MAP20 on microtubule dynamics. MAP20-specific antibody was used to study expression and localization of MAP20 in different cell types during vascular bundle development. We used an artificial microRNAs (amiRNA) knockdown approach to determine the function of MAP20. MAP20 is expressed during the late stages of vascular bundle development and localizes around forming pits and under secondary cell wall thickenings in metaxylem cells. MAP20 suppresses microtubule depolymerization; however, unlike the animal TPX2 counterpart, MAP20 does not cooperate with the γ-tubulin ring complex in microtubule nucleation. Knockdown of MAP20 causes bigger pits, thinner pit membranes, perturbed vasculature development, lower reproductive potential and higher drought susceptibility. We conclude that MAP20 may contribute to drought adaptation by modulating pit size and pit membrane thickness in metaxylem.
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Affiliation(s)
- Tetyana Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164, USA
| | - Glenn Turner
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164, USA
| | - Deirdre Fahy
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164, USA
| | - Rhoda A T Brew-Appiah
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Raymundo Alfaro-Aco
- Department of Molecular Biology, Princeton University, Washington Road, Princeton, NJ, 08544, USA
| | - Janice de Almeida Engler
- Institut Sophia Agrobiotech, Institut National de la Recherche Agronomique, Université Côte d'Azur, Centre National de la Recherche Scientifique, 06903, Sophia-Antipolis, France
| | - Karen A Sanguinet
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Andrei Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164, USA
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29
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Yu SG, Kim JH, Cho NH, Oh TR, Kim WT. Arabidopsis RING E3 ubiquitin ligase JUL1 participates in ABA-mediated microtubule depolymerization, stomatal closure, and tolerance response to drought stress. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:824-842. [PMID: 32314432 DOI: 10.1111/tpj.14775] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 03/28/2020] [Accepted: 03/31/2020] [Indexed: 05/20/2023]
Abstract
Ubiquitination is a critical post-translational protein modification that has been implicated in diverse cellular processes, including abiotic stress responses, in plants. In the present study, we identified and characterized a T-DNA insertion mutant in the At5g10650 locus. Compared to wild-type Arabidopsis plants, at5g10650 progeny were hyposensitive to ABA at the germination stage. At5g10650 possessed a single C-terminal C3HC4-type Really Interesting New Gene (RING) motif, which was essential for ABA-mediated germination and E3 ligase activity in vitro. At5g10650 was closely associated with microtubules and microtubule-associated proteins in Arabidopsis and tobacco leaf cells. Localization of At5g10650 to the nucleus was frequently observed. Unexpectedly, At5g10650 was identified as JAV1-ASSOCIATED UBIQUITIN LIGASE1 (JUL1), which was recently reported to participate in the jasmonate signaling pathway. The jul1 knockout plants exhibited impaired ABA-promoted stomatal closure. In addition, stomatal closure could not be induced by hydrogen peroxide and calcium in jul1 plants. jul1 guard cells accumulated wild-type levels of H2 O2 after ABA treatment. These findings indicated that JUL1 acts downstream of H2 O2 and calcium in the ABA-mediated stomatal closure pathway. Typical radial arrays of microtubules were maintained in jul1 guard cells after exposure to ABA, H2 O2 , and calcium, which in turn resulted in ABA-hyposensitive stomatal movements. Finally, jul1 plants were markedly more susceptible to drought stress than wild-type plants. Overall, our results suggest that the Arabidopsis RING E3 ligase JUL1 plays a critical role in ABA-mediated microtubule disorganization, stomatal closure, and tolerance to drought stress.
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Affiliation(s)
- Seong Gwan Yu
- Department of Systems Biology and Division of Life Science, Yonsei University, Seoul, 03722, Korea
- Institute of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Jong Hum Kim
- Department of Systems Biology and Division of Life Science, Yonsei University, Seoul, 03722, Korea
- Institute of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Na Hyun Cho
- Department of Systems Biology and Division of Life Science, Yonsei University, Seoul, 03722, Korea
- Institute of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Tae Rin Oh
- Department of Systems Biology and Division of Life Science, Yonsei University, Seoul, 03722, Korea
- Institute of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Woo Taek Kim
- Department of Systems Biology and Division of Life Science, Yonsei University, Seoul, 03722, Korea
- Institute of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
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30
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Yan H, Chaumont N, Gilles JF, Bolte S, Hamant O, Bailly C. Microtubule self-organisation during seed germination in Arabidopsis. BMC Biol 2020; 18:44. [PMID: 32354334 PMCID: PMC7191766 DOI: 10.1186/s12915-020-00774-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/26/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Upon water uptake and release of seed dormancy, embryonic plant cells expand, while being mechanically constrained by the seed coat. Cortical microtubules (CMTs) are key players of cell elongation in plants: their anisotropic orientation channels the axis of cell elongation through the guidance of oriented deposition of load-bearing cellulose microfibrils in the cell wall. Interestingly, CMTs align with tensile stress, and consistently, they reorient upon compressive stress in growing hypocotyls. How CMTs first organise in germinating embryos is unknown, and their relation with mechanical stress has not been investigated at such an early developing stage. RESULTS Here, we analysed CMT dynamics in dormant and non-dormant Arabidopsis seeds by microscopy of fluorescently tagged microtubule markers at different developmental time points and in response to abscisic acid and gibberellins. We found that CMTs first appear as very few thick bundles in dormant seeds. Consistently, analysis of available transcriptome and translatome datasets show that limiting amounts of tubulin and microtubule regulators initially hinder microtubule self-organisation. Seeds imbibed in the presence of gibberellic acid or abscisic acid displayed altered microtubule organisation and transcriptional regulation. Upon the release of dormancy, CMTs then self-organise into multiple parallel transverse arrays. Such behaviour matches the tensile stress patterns in such mechanically constrained embryos. This suggests that, as CMTs first self-organise, they also align with shape-derived tensile stress patterns. CONCLUSIONS Our results provide a scenario in which dormancy release in the embryo triggers microtubule self-organisation and alignment with tensile stress prior to germination and anisotropic growth.
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Affiliation(s)
- Huifang Yan
- Laboratoire de Biologie du Développement, Sorbonne Université, CNRS, F-75005, Paris, France
- Key Laboratory of Pratacultural Science, Beijing Municipality, China Agricultural University, Beijing, 100193, China
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, 266109, China
| | - Nicole Chaumont
- Laboratoire de Biologie du Développement, Sorbonne Université, CNRS, F-75005, Paris, France
| | - Jean François Gilles
- Imaging Core Facility, CNRS-FRE3631-Institut de Biologie Paris Seine, Sorbonne Université, F-75005, Paris, France
| | - Susanne Bolte
- Imaging Core Facility, CNRS-FRE3631-Institut de Biologie Paris Seine, Sorbonne Université, F-75005, Paris, France
| | - Olivier Hamant
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA, F-69000, Lyon, France
| | - Christophe Bailly
- Laboratoire de Biologie du Développement, Sorbonne Université, CNRS, F-75005, Paris, France.
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31
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Vavrdová T, Křenek P, Ovečka M, Šamajová O, Floková P, Illešová P, Šnaurová R, Šamaj J, Komis G. Complementary Superresolution Visualization of Composite Plant Microtubule Organization and Dynamics. FRONTIERS IN PLANT SCIENCE 2020; 11:693. [PMID: 32582243 PMCID: PMC7290007 DOI: 10.3389/fpls.2020.00693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 05/01/2020] [Indexed: 05/04/2023]
Abstract
Microtubule bundling is an essential mechanism underlying the biased organization of interphase and mitotic microtubular systems of eukaryotes in ordered arrays. Microtubule bundle formation can be exemplified in plants, where the formation of parallel microtubule systems in the cell cortex or the spindle midzone is largely owing to the microtubule crosslinking activity of a family of microtubule associated proteins, designated as MAP65s. Among the nine members of this family in Arabidopsis thaliana, MAP65-1 and MAP65-2 are ubiquitous and functionally redundant. Crosslinked microtubules can form high-order arrays, which are difficult to track using widefield or confocal laser scanning microscopy approaches. Here, we followed spatiotemporal patterns of MAP65-2 localization in hypocotyl cells of Arabidopsis stably expressing fluorescent protein fusions of MAP65-2 and tubulin. To circumvent imaging difficulties arising from the density of cortical microtubule bundles, we use different superresolution approaches including Airyscan confocal laser scanning microscopy (ACLSM), structured illumination microscopy (SIM), total internal reflection SIM (TIRF-SIM), and photoactivation localization microscopy (PALM). We provide insights into spatiotemporal relations between microtubules and MAP65-2 crossbridges by combining SIM and ACLSM. We obtain further details on MAP65-2 distribution by single molecule localization microscopy (SMLM) imaging of either mEos3.2-MAP65-2 stochastic photoconversion, or eGFP-MAP65-2 stochastic emission fluctuations under specific illumination conditions. Time-dependent dynamics of MAP65-2 were tracked at variable time resolution using SIM, TIRF-SIM, and ACLSM and post-acquisition kymograph analysis. ACLSM imaging further allowed to track end-wise dynamics of microtubules labeled with TUA6-GFP and to correlate them with concomitant fluctuations of MAP65-2 tagged with tagRFP. All different microscopy modules examined herein are accompanied by restrictions in either the spatial resolution achieved, or in the frame rates of image acquisition. PALM imaging is compromised by speed of acquisition. This limitation was partially compensated by exploiting emission fluctuations of eGFP which allowed much higher photon counts at substantially smaller time series compared to mEos3.2. SIM, TIRF-SIM, and ACLSM were the methods of choice to follow the dynamics of MAP65-2 in bundles of different complexity. Conclusively, the combination of different superresolution methods allowed for inferences on the distribution and dynamics of MAP65-2 within microtubule bundles of living A. thaliana cells.
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32
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Fang XD, Yan T, Gao Q, Cao Q, Gao DM, Xu WY, Zhang ZJ, Ding ZH, Wang XB. A cytorhabdovirus phosphoprotein forms mobile inclusions trafficked on the actin/ER network for viral RNA synthesis. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:4049-4062. [PMID: 31020313 PMCID: PMC6685698 DOI: 10.1093/jxb/erz195] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/11/2019] [Indexed: 05/07/2023]
Abstract
As obligate parasites, plant viruses usually hijack host cytoskeletons for replication and movement. Rhabdoviruses are enveloped, negative-stranded RNA viruses that infect vertebrates, invertebrates, and plants, but the mechanisms of intracellular trafficking of plant rhabdovirus proteins are largely unknown. Here, we used Barley yellow striate mosaic virus (BYSMV), a plant cytorhabdovirus, as a model to investigate the effects of the actin cytoskeleton on viral intracellular movement and viral RNA synthesis in a mini-replicon (MR) system. The BYSMV P protein forms mobile inclusion bodies that are trafficked along the actin/endoplasmic reticulum network, and recruit the N and L proteins into viroplasm-like structures. Deletion analysis showed that the N terminal region (aa 43-55) and the remaining region (aa 56-295) of BYSMV P are essential for the mobility and formation of inclusions, respectively. Overexpression of myosin XI-K tails completely abolishes the trafficking activity of P bodies, and is accompanied by a significant reduction of viral MR RNA synthesis. These results suggest that BYSMV P contributes to the formation and trafficking of viroplasm-like structures along the ER/actin network driven by myosin XI-K. Thus, rhabdovirus P appears to be a dynamic hub protein for efficient recruitment of viral proteins, thereby promoting viral RNA synthesis.
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Affiliation(s)
- Xiao-Dong Fang
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Teng Yan
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Qiang Gao
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Qing Cao
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Dong-Min Gao
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Wen-Ya Xu
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Zhen-Jia Zhang
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Zhi-Hang Ding
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xian-Bing Wang
- State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
- Correspondence:
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33
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Burkart GM, Dixit R. Microtubule bundling by MAP65-1 protects against severing by inhibiting the binding of katanin. Mol Biol Cell 2019; 30:1587-1597. [PMID: 31017848 DOI: 10.1101/520445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023] Open
Abstract
The microtubule-severing enzyme katanin (KTN1) regulates the organization and turnover of microtubule arrays by the localized breakdown of microtubule polymers. In land plants, KTN1 activity is essential for the formation of linearly organized cortical microtubule arrays that determine the axis of cell expansion. Cell biological studies have shown that even though KTN1 binds to the sidewalls of single and bundled microtubules, severing activity is restricted to microtubule cross-over and nucleation sites, indicating that cells contain protective mechanisms to prevent indiscriminate microtubule severing. Here, we show that the microtubule-bundling protein MAP65-1 inhibits KTN1-mediated microtubule severing in vitro. Severing is inhibited at bundled microtubule segments and the severing rate of nonbundled microtubules is reduced by MAP65-1 in a concentration-dependent manner. Using various MAP65-1 mutant proteins, we demonstrate that efficient cross-linking of microtubules is crucial for this protective effect and that microtubule binding alone is not sufficient. Reduced severing due to microtubule bundling by MAP65-1 correlated to decreased binding of KTN1 to these microtubules. Taken together, our work reveals that cross-linking of microtubules by MAP65-1 confers resistance to severing by inhibiting the binding of KTN1 and identifies the structural features of MAP65-1 that are important for this activity.
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Affiliation(s)
- Graham M Burkart
- Department of Biology and Center for Engineering Mechanobiology, Washington University in St. Louis, St. Louis, MO 63130
| | - Ram Dixit
- Department of Biology and Center for Engineering Mechanobiology, Washington University in St. Louis, St. Louis, MO 63130
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Burkart GM, Dixit R. Microtubule bundling by MAP65-1 protects against severing by inhibiting the binding of katanin. Mol Biol Cell 2019; 30:1587-1597. [PMID: 31017848 PMCID: PMC6727635 DOI: 10.1091/mbc.e18-12-0776] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The microtubule-severing enzyme katanin (KTN1) regulates the organization and turnover of microtubule arrays by the localized breakdown of microtubule polymers. In land plants, KTN1 activity is essential for the formation of linearly organized cortical microtubule arrays that determine the axis of cell expansion. Cell biological studies have shown that even though KTN1 binds to the sidewalls of single and bundled microtubules, severing activity is restricted to microtubule cross-over and nucleation sites, indicating that cells contain protective mechanisms to prevent indiscriminate microtubule severing. Here, we show that the microtubule-bundling protein MAP65-1 inhibits KTN1-mediated microtubule severing in vitro. Severing is inhibited at bundled microtubule segments and the severing rate of nonbundled microtubules is reduced by MAP65-1 in a concentration-dependent manner. Using various MAP65-1 mutant proteins, we demonstrate that efficient cross-linking of microtubules is crucial for this protective effect and that microtubule binding alone is not sufficient. Reduced severing due to microtubule bundling by MAP65-1 correlated to decreased binding of KTN1 to these microtubules. Taken together, our work reveals that cross-linking of microtubules by MAP65-1 confers resistance to severing by inhibiting the binding of KTN1 and identifies the structural features of MAP65-1 that are important for this activity.
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Affiliation(s)
- Graham M Burkart
- Department of Biology and Center for Engineering Mechanobiology, Washington University in St. Louis, St. Louis, MO 63130
| | - Ram Dixit
- Department of Biology and Center for Engineering Mechanobiology, Washington University in St. Louis, St. Louis, MO 63130
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Shaw SL, Thoms D, Powers J. Structured illumination approaches for super-resolution in plant cells. Microscopy (Oxf) 2019; 68:37-44. [PMID: 30295787 DOI: 10.1093/jmicro/dfy043] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 09/17/2018] [Accepted: 10/01/2018] [Indexed: 11/14/2022] Open
Abstract
The advent of super-resolution techniques in biological microscopy has opened new frontiers for exploring the molecular distribution of proteins and small molecules in cells. Improvements in optical design and innovations in the approaches for the collection of fluorescence emission have produced substantial gains in signal from chemical labels and fluorescent proteins. Structuring the illumination to elicit fluorescence from specific or even random patterns allows the extraction of higher order spatial frequencies from specimens labeled with conventional probes. Application of this approach to plant systems for super-resolution imaging has been relatively slow owing in large part to aberrations incurred when imaging through the plant cell wall. In this brief review, we address the use of two prominent methods for generating super-resolution images in living plant specimens and discuss future directions for gaining better access to these techniques.
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Affiliation(s)
- Sidney L Shaw
- Department of Biology, Light Microscopy Imaging Center, Indiana University, Bloomington, IN, USA
| | - David Thoms
- Department of Biology, Light Microscopy Imaging Center, Indiana University, Bloomington, IN, USA
| | - James Powers
- Department of Biology, Light Microscopy Imaging Center, Indiana University, Bloomington, IN, USA
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Smertenko A. Phragmoplast expansion: the four-stroke engine that powers plant cytokinesis. CURRENT OPINION IN PLANT BIOLOGY 2018; 46:130-137. [PMID: 30072118 DOI: 10.1016/j.pbi.2018.07.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/28/2018] [Accepted: 07/13/2018] [Indexed: 05/21/2023]
Abstract
The phragmoplast is a plant-specific secretory module that partitions daughter cells during cytokinesis by constructing a cell plate from membranes and oligosaccharides. The cell plate is typically a long structure, which requires the phragmoplast to expand to complete cytokinesis. The phragmoplast expands by coordinating microtubule dynamics with membrane trafficking. Each step in phragmoplast expansion involves the establishment of anti-parallel microtubule overlaps that are enriched with the protein MAP65, which recruits cytokinetic vesicles through interaction with the tethering factor, TRAPPII. Cell plate assembly triggers dissolution of the anti-parallel overlaps and stabilization of microtubule plus ends through association with the cell plate assembly machinery. This opinion article discusses processes that drive phragmoplast expansion as well as highlights key questions that remain for better understanding its role in plant cell division.
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Affiliation(s)
- Andrei Smertenko
- Institute of Biological Chemistry, College of Human, Agricultural, and Natural Resource Sciences, Washington State University, Pullman, WA 99164, USA.
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Molines AT, Marion J, Chabout S, Besse L, Dompierre JP, Mouille G, Coquelle FM. EB1 contributes to microtubule bundling and organization, along with root growth, in Arabidopsis thaliana. Biol Open 2018; 7:bio.030510. [PMID: 29945874 PMCID: PMC6124560 DOI: 10.1242/bio.030510] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Microtubules are involved in plant development and adaptation to their environment, but the sustaining molecular mechanisms remain elusive. Microtubule-end-binding 1 (EB1) proteins participate in directional root growth in Arabidopsis thaliana. However, a connection to the underlying microtubule array has not been established yet. We show here that EB1 proteins contribute to the organization of cortical microtubules in growing epidermal plant cells, without significant modulation of microtubule dynamics. Using super-resolution stimulated emission depletion (STED) microscopy and an original quantification approach, we also demonstrate a significant reduction of apparent microtubule bundling in cytoplasmic-EB1-deficient plants, suggesting a function for EB1 in the interaction between adjacent microtubules. Furthermore, we observed root growth defects in EB1-deficient plants, which are not related to cell division impairment. Altogether, our results support a role for EB1 proteins in root development, in part by maintaining the organization of cortical microtubules. This article has an associated First Person interview with the first author of the paper. Summary: EB1 proteins affect cortical-microtubule bundling and organization in Arabidopsis thaliana, without significant modulation of microtubule dynamics. They also participate in root growth, further linking microtubules to plant development.
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Affiliation(s)
- Arthur T Molines
- Department of Cell Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
| | - Jessica Marion
- Department of Cell Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
| | - Salem Chabout
- Institut Jean-Pierre Bourgin (IJPB), INRA - AgroParisTech, 78026 Versailles Cedex, France
| | - Laetitia Besse
- Light Microscopy Facility, Imagerie-Gif, Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
| | - Jim P Dompierre
- Light Microscopy Facility, Imagerie-Gif, Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
| | - Grégory Mouille
- Institut Jean-Pierre Bourgin (IJPB), INRA - AgroParisTech, 78026 Versailles Cedex, France
| | - Frédéric M Coquelle
- Department of Cell Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
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Zhang H, Deng X, Sun B, Lee Van S, Kang Z, Lin H, Lee YRJ, Liu B. Role of the BUB3 protein in phragmoplast microtubule reorganization during cytokinesis. NATURE PLANTS 2018; 4:485-494. [PMID: 29967519 DOI: 10.1038/s41477-018-0192-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 06/04/2018] [Indexed: 05/15/2023]
Abstract
The evolutionarily conserved WD40 protein budding uninhibited by benzimidazole 3 (BUB3) is known for its function in spindle assembly checkpoint control. In the model plant Arabidopsis thaliana, nearly identical BUB3;1 and BUB3;2 proteins decorated the phragmoplast midline through interaction with the microtubule-associated protein MAP65-3 during cytokinesis. BUB3;1 and BUB3;2 interacted with the carboxy-terminal segment of MAP65-3 (but not MAP65-1), which harbours its microtubule-binding domain for its post-mitotic localization. Reciprocally, BUB3;1 and BUB3;2 also regulated MAP65-3 localization in the phragmoplast by enhancing its microtubule association. In the bub3;1 bub3;2 double mutant, MAP65-3 localization was often dissipated away from the phragmoplast midline and abolished upon treatment of low doses of the cytokinesis inhibitory drug caffeine that were tolerated by the control plant. The phragmoplast microtubule array exhibited uncoordinated expansion pattern in the double mutant cells as the phragmoplast edge reached the parental plasma membrane at different times in different areas. Upon caffeine treatment, phragmoplast expansion was halted as if the microtubule array was frozen. As a result, cytokinesis was abolished due to failed cell plate assembly. Our findings have uncovered a novel function of the plant BUB3 in MAP65-3-dependent microtubule reorganization during cytokinesis.
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Affiliation(s)
- Hongchang Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, USA
| | - Xingguang Deng
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, USA
- College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Baojuan Sun
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, USA
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, China
| | - Sonny Lee Van
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, USA
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Honghui Lin
- College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Yuh-Ru Julie Lee
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, USA.
| | - Bo Liu
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, USA.
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Smertenko A, Hewitt SL, Jacques CN, Kacprzyk R, Liu Y, Marcec MJ, Moyo L, Ogden A, Oung HM, Schmidt S, Serrano-Romero EA. Phragmoplast microtubule dynamics - a game of zones. J Cell Sci 2018; 131:jcs.203331. [PMID: 29074579 DOI: 10.1242/jcs.203331] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Plant morphogenesis relies on the accurate positioning of the partition (cell plate) between dividing cells during cytokinesis. The cell plate is synthetized by a specialized structure called the phragmoplast, which consists of microtubules, actin filaments, membrane compartments and associated proteins. The phragmoplast forms between daughter nuclei during the transition from anaphase to telophase. As cells are commonly larger than the originally formed phragmoplast, the construction of the cell plate requires phragmoplast expansion. This expansion depends on microtubule polymerization at the phragmoplast forefront (leading zone) and loss at the back (lagging zone). Leading and lagging zones sandwich the 'transition' zone. A population of stable microtubules in the transition zone facilitates transport of building materials to the midzone where the cell plate assembly takes place. Whereas microtubules undergo dynamic instability in all zones, the overall balance appears to be shifted towards depolymerization in the lagging zone. Polymerization of microtubules behind the lagging zone has not been reported to date, suggesting that microtubule loss there is irreversible. In this Review, we discuss: (1) the regulation of microtubule dynamics in the phragmoplast zones during expansion; (2) mechanisms of the midzone establishment and initiation of cell plate biogenesis; and (3) signaling in the phragmoplast.
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Affiliation(s)
- Andrei Smertenko
- Institute of Biological Chemistry, Pullman, WA 99164, USA .,Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA
| | - Seanna L Hewitt
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA.,Department of Horticulture, Washington State University, Pullman, WA 99164, USA
| | - Caitlin N Jacques
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA.,Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164, USA
| | - Rafal Kacprzyk
- Institute of Biological Chemistry, Pullman, WA 99164, USA
| | - Yan Liu
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA.,School of Biological Sciences, Washington State University, Pullman, WA 99164, USA
| | - Matthew J Marcec
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA.,Department of Plant Pathology, Washington State University, Pullman, WA 99164, USA
| | - Lindani Moyo
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA.,Department of Plant Pathology, Washington State University, Pullman, WA 99164, USA
| | - Aaron Ogden
- Institute of Biological Chemistry, Pullman, WA 99164, USA.,Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA
| | - Hui Min Oung
- Institute of Biological Chemistry, Pullman, WA 99164, USA.,Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA
| | - Sharol Schmidt
- Institute of Biological Chemistry, Pullman, WA 99164, USA.,Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA
| | - Erika A Serrano-Romero
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 99164, USA.,School of Biological Sciences, Washington State University, Pullman, WA 99164, USA
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PS S, SV AM, Prakash C, MK R, Tiwari R, Mohapatra T, Singh NK. High Resolution Mapping of QTLs for Heat Tolerance in Rice Using a 5K SNP Array. RICE (NEW YORK, N.Y.) 2017; 10:28. [PMID: 28584974 PMCID: PMC5459777 DOI: 10.1186/s12284-017-0167-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 05/30/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Heat stress is one of the major abiotic threats to rice production, next to drought and salinity stress. Incidence of heat stress at reproductive phase of the crop results in abnormal pollination leading to floret sterility, low seed set and poor grain quality. Identification of QTLs and causal genes for heat stress tolerance at flowering will facilitate breeding for improved heat tolerance in rice. In the present study, we used 272 F8 recombinant inbred lines derived from a cross between Nagina22, a well-known heat tolerant Aus cultivar and IR64, a heat sensitive popular Indica rice variety to map the QTLs for heat tolerance. RESULTS To enable precise phenotyping for heat stress tolerance, we used a controlled phenotyping facility available at ICAR-Indian Institute of Wheat and Barley Research, Karnal, India. Based on 'days to 50% flowering' data of the RILs, we followed staggered sowing to synchronize flowering to impose heat stress at uniform stage. Using the Illumina infinium 5K SNP array for genotyping the parents and the RILs, and stress susceptibility and stress tolerance indices (SSI and STI) of percent spikelet sterility and yield per plant (g), we identified five QTLs on chromosomes 3, 5, 9 and 12. The identified QTLs explained phenotypic variation in the range of 6.27 to 21. 29%. Of these five QTLs, two high effect QTLs, one novel (qSTIPSS9.1) and one known (qSTIY5.1/qSSIY5.2), were mapped in less than 400 Kbp genomic regions, comprising of 65 and 54 genes, respectively. CONCLUSIONS The present study identified two major QTLs for heat tolerance in rice in narrow physical intervals, which can be employed for crop improvement by marker assisted selection (MAS) after development of suitable scorable markers for breeding of high yielding heat tolerant rice varieties. This is the first report of a major QTL for heat tolerance on chromosome 9 of rice. Further, a known QTL for heat tolerance on chromosome 5 was narrowed down from 23 Mb to 331 Kbp in this study.
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Affiliation(s)
- Shanmugavadivel PS
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
- Present address, Division of Plant Biotechnology, ICAR-Indian Institute of Pulses Research, Kanpur, 208 024 India
| | - Amitha Mithra SV
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
| | - Chandra Prakash
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
| | - Ramkumar MK
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
| | - Ratan Tiwari
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132 001 India
| | - Trilochan Mohapatra
- Indian Council of Agricultural Research, Krishi Bhavan, New Delhi, 110 001 India
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41
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Ps S, Sv AM, Prakash C, Mk R, Tiwari R, Mohapatra T, Singh NK. High Resolution Mapping of QTLs for Heat Tolerance in Rice Using a 5K SNP Array. RICE (NEW YORK, N.Y.) 2017. [PMID: 28584974 DOI: 10.1186/s12284-017-0167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
BACKGROUND Heat stress is one of the major abiotic threats to rice production, next to drought and salinity stress. Incidence of heat stress at reproductive phase of the crop results in abnormal pollination leading to floret sterility, low seed set and poor grain quality. Identification of QTLs and causal genes for heat stress tolerance at flowering will facilitate breeding for improved heat tolerance in rice. In the present study, we used 272 F8 recombinant inbred lines derived from a cross between Nagina22, a well-known heat tolerant Aus cultivar and IR64, a heat sensitive popular Indica rice variety to map the QTLs for heat tolerance. RESULTS To enable precise phenotyping for heat stress tolerance, we used a controlled phenotyping facility available at ICAR-Indian Institute of Wheat and Barley Research, Karnal, India. Based on 'days to 50% flowering' data of the RILs, we followed staggered sowing to synchronize flowering to impose heat stress at uniform stage. Using the Illumina infinium 5K SNP array for genotyping the parents and the RILs, and stress susceptibility and stress tolerance indices (SSI and STI) of percent spikelet sterility and yield per plant (g), we identified five QTLs on chromosomes 3, 5, 9 and 12. The identified QTLs explained phenotypic variation in the range of 6.27 to 21. 29%. Of these five QTLs, two high effect QTLs, one novel (qSTIPSS9.1) and one known (qSTIY5.1/qSSIY5.2), were mapped in less than 400 Kbp genomic regions, comprising of 65 and 54 genes, respectively. CONCLUSIONS The present study identified two major QTLs for heat tolerance in rice in narrow physical intervals, which can be employed for crop improvement by marker assisted selection (MAS) after development of suitable scorable markers for breeding of high yielding heat tolerant rice varieties. This is the first report of a major QTL for heat tolerance on chromosome 9 of rice. Further, a known QTL for heat tolerance on chromosome 5 was narrowed down from 23 Mb to 331 Kbp in this study.
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Affiliation(s)
- Shanmugavadivel Ps
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
- Present address, Division of Plant Biotechnology, ICAR-Indian Institute of Pulses Research, Kanpur, 208 024, India
| | - Amitha Mithra Sv
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
| | - Chandra Prakash
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
| | - Ramkumar Mk
- ICAR-National Research Centre on Plant Biotechnology, New Delhi, India
| | - Ratan Tiwari
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132 001, India
| | - Trilochan Mohapatra
- Indian Council of Agricultural Research, Krishi Bhavan, New Delhi, 110 001, India
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Zhou S, Chen Q, Li X, Li Y. MAP65-1 is required for the depolymerization and reorganization of cortical microtubules in the response to salt stress in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 264:112-121. [PMID: 28969791 DOI: 10.1016/j.plantsci.2017.09.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 08/29/2017] [Accepted: 09/01/2017] [Indexed: 05/07/2023]
Abstract
Microtubules (MTs) are highly dynamical structures that play crucial roles in plant development and in response to environmental signals and stress conditions. MT-associated proteins (MAPs) play important roles in regulating the organization of MT arrays. MAP65 is a family of plant MT-bundling proteins. Here, we determined the role of MAP65-1 in the response to salt stress. MAP65-1 is involved not only in regulating the depolymerization, but also in the following reorganization of cortical MTs in salt stress responses. In addition, the depolymerization of the cortical MTs affected the survival of seedlings during salt stress, and map65-1 mutants had enhanced salt hypersensitivity levels. MAP65-1 interacted with mitogen-activated protein kinase (MPK) 3 and 6; however, only the mpk6 mutant exhibited hypersensitivity to salt stress, and MPK6 was involved in regulating the salt stress-induced depolymerization of cortical MTs. Thus, MAP65-1 plays a critical role in the response to salt stress and is required for regulating the rapid depolymerization and reorganization of cortical MTs. MAP65-1 interacts with MPK6, not MPK3, affecting the MT's dynamic instability which is critical for plant salt-stress tolerance.
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Affiliation(s)
- Sa Zhou
- State Key Laboratory of Plant Physiology Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Qiuhong Chen
- State Key Laboratory of Plant Physiology Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xinyue Li
- State Key Laboratory of Plant Physiology Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yingzhang Li
- State Key Laboratory of Plant Physiology Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
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43
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Covarrubias AA, Cuevas-Velazquez CL, Romero-Pérez PS, Rendón-Luna DF, Chater CCC. Structural disorder in plant proteins: where plasticity meets sessility. Cell Mol Life Sci 2017; 74:3119-3147. [PMID: 28643166 PMCID: PMC11107788 DOI: 10.1007/s00018-017-2557-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 06/01/2017] [Indexed: 01/08/2023]
Abstract
Plants are sessile organisms. This intriguing nature provokes the question of how they survive despite the continual perturbations caused by their constantly changing environment. The large amount of knowledge accumulated to date demonstrates the fascinating dynamic and plastic mechanisms, which underpin the diverse strategies selected in plants in response to the fluctuating environment. This phenotypic plasticity requires an efficient integration of external cues to their growth and developmental programs that can only be achieved through the dynamic and interactive coordination of various signaling networks. Given the versatility of intrinsic structural disorder within proteins, this feature appears as one of the leading characters of such complex functional circuits, critical for plant adaptation and survival in their wild habitats. In this review, we present information of those intrinsically disordered proteins (IDPs) from plants for which their high level of predicted structural disorder has been correlated with a particular function, or where there is experimental evidence linking this structural feature with its protein function. Using examples of plant IDPs involved in the control of cell cycle, metabolism, hormonal signaling and regulation of gene expression, development and responses to stress, we demonstrate the critical importance of IDPs throughout the life of the plant.
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Affiliation(s)
- Alejandra A Covarrubias
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62250, Cuernavaca, Mexico.
| | - Cesar L Cuevas-Velazquez
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62250, Cuernavaca, Mexico
| | - Paulette S Romero-Pérez
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62250, Cuernavaca, Mexico
| | - David F Rendón-Luna
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62250, Cuernavaca, Mexico
| | - Caspar C C Chater
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62250, Cuernavaca, Mexico
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44
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Shevchenko GV. Putative gravisensors among microtubule associated proteins. Cell Biol Int 2017; 43:983-990. [PMID: 28656641 DOI: 10.1002/cbin.10811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 06/24/2017] [Indexed: 12/27/2022]
Abstract
Despite of long period of investigation (over 100 years), still a lot of questions remain unclear about molecular mechanisms of plant graviperception. This requires designing new experiments and new approaches to be applied in gravitational biology. Investigation of plant cell reactions under clinorotation (plant disorientation in respect to gravity vector) is of significant importance to such type of research. Clinorotation is known to cause changes of cell polarity and exert mechanical stress in plant cells. Microtubular cytoskeleton is highly dynamic structure and it responds to both of these stresses. Due to turgor pressure and cell elongation, endogenous mechanical forces influence microtubule orientation in order to coordinate cell growth. Rearrangements of microtubules are regulated by numerous associated proteins which functional activity is not fully clear. In this review, we discuss how MT associated proteins regulate cortical MT arrays under mechanical stress and consider how these proteins may act as plant cell gravisensors. Investigation of microtubule associated proteins under clinorotation might shed the light on molecular mechanism of plant cytoskeleton arrangement and its involvement in initial reactions of cell graviperception.
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Affiliation(s)
- Galina V Shevchenko
- Institute of Botany, NAS Ukraine, Cell Biology Department, 2, Tereshchenkivska St., Kiev, 01004, Ukraine
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Sugiyama Y, Wakazaki M, Toyooka K, Fukuda H, Oda Y. A Novel Plasma Membrane-Anchored Protein Regulates Xylem Cell-Wall Deposition through Microtubule-Dependent Lateral Inhibition of Rho GTPase Domains. Curr Biol 2017; 27:2522-2528.e4. [PMID: 28803875 DOI: 10.1016/j.cub.2017.06.059] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 05/29/2017] [Accepted: 06/22/2017] [Indexed: 11/29/2022]
Abstract
Spatial control of cell-wall deposition is essential for determining plant cell shape [1]. Rho-type GTPases, together with the cortical cytoskeleton, play central roles in regulating cell-wall patterning [2]. In metaxylem vessel cells, which are the major components of xylem tissues, active ROP11 Rho GTPases form oval plasma membrane domains that locally disrupt cortical microtubules, thereby directing the formation of oval pits in secondary cell walls [3-5]. However, the regulatory mechanism that determines the planar shape of active Rho of Plants (ROP) domains is still unknown. Here we show that IQD13 associates with cortical microtubules and the plasma membrane to laterally restrict the localization of ROP GTPase domains, thereby directing the formation of oval secondary cell-wall pits. Loss and overexpression of IQD13 led to the formation of abnormally round and narrow secondary cell-wall pits, respectively. Ectopically expressed IQD13 increased the presence of parallel cortical microtubules by promoting microtubule rescue. A reconstructive approach revealed that IQD13 confines the area of active ROP domains within the lattice of the cortical microtubules, causing narrow ROP domains to form. This activity required the interaction of IQD13 with the plasma membrane. These findings suggest that IQD13 positively regulates microtubule dynamics as well as their linkage to the plasma membrane, which synergistically confines the area of active ROP domains, leading to the formation of oval secondary cell-wall pits. This finding sheds light on the role of microtubule-plasma membrane linkage as a lateral fence that determines the planar shape of Rho GTPase domains.
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Affiliation(s)
- Yuki Sugiyama
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Center for Frontier Research, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan
| | - Mayumi Wakazaki
- Mass Spectrometry and Microscopy Unit, Center for Sustainable Resource Science, RIKEN, 1-7-22 Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Kiminori Toyooka
- Mass Spectrometry and Microscopy Unit, Center for Sustainable Resource Science, RIKEN, 1-7-22 Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Hiroo Fukuda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshihisa Oda
- Center for Frontier Research, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan; Department of Genetics, SOKENDAI (The Graduate University for Advanced Studies), 1111 Yata, Mishima, Shizuoka 411-8540, Japan.
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Parrotta L, Faleri C, Cresti M, Cai G. Proteins immunologically related to MAP65-1 accumulate and localize differentially during bud development in Vitis vinifera L. PROTOPLASMA 2017; 254:1591-1605. [PMID: 27913905 DOI: 10.1007/s00709-016-1055-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 11/23/2016] [Indexed: 06/06/2023]
Abstract
Various arrays of microtubules are present throughout the plant cell cycle and are involved in distinct functions. Microtubule-associated proteins (MAPs) regulate microtubule dynamics by acting as stabilizers, destabilizers, and promoters of microtubule dynamics. The MAP65 family is a specific group of cross-linkers required for structural maintenance of microtubules. In plants, different isoforms of MAP65 are differentially expressed according to their developmental program. In this work, we analyzed the differential distribution of proteins immunologically related to MAP65-1 during bud development in grapevine (Vitis vinifera L.). First, we annotated the MAP65 genes present in the Vitis genome in order to compare the number and sequence of genes to other species. Subsequently, we focused on a specific isoform (MAP65-1) by characterizing its accumulation and distribution. Proteins were extracted from different organs of Vitis (buds, leaves, flowers, and tendrils), were separated by two-dimensional electrophoresis (2-DE), and were probed by immunoblot with a specific antiserum. We found seven spots immunologically related to MAP65-1, grouped in two distinct clusters, which accumulate differentially according to the developmental stage. In addition, we analyzed the localization of MAP65-1 during three different stages of bud development. Implication of data on the use of different isotypes of MAP65-1 during Vitis development is discussed.
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Affiliation(s)
- Luigi Parrotta
- Dipartimento Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, via Irnerio 42, 40126, Bologna, Italy.
| | - Claudia Faleri
- Dipartimento Scienze della Vita, Università di Siena, via Mattioli 4, 53100, Siena, Italy
| | - Mauro Cresti
- Dipartimento Scienze della Vita, Università di Siena, via Mattioli 4, 53100, Siena, Italy
| | - Giampiero Cai
- Dipartimento Scienze della Vita, Università di Siena, via Mattioli 4, 53100, Siena, Italy
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Sidorchuk YV, Deineko EV. Cytoskeletal mechanisms in positioning of the second-division spindles and meiotic restitution in tobacco (Nicotiana tabacum L.) microsporogenesis. Cell Biol Int 2017; 41:669-679. [PMID: 28387429 DOI: 10.1002/cbin.10772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 04/05/2017] [Indexed: 11/11/2022]
Abstract
Microsporogenesis patterns of the polyploid (2n = 4x = 96) and diploid (2n = 2x = 48) Nicotiana tabacum L. (cv. Havana Petit line SR1) plants have been analyzed and compared. Four types of abnormal positions of the second-division spindles-tripolar, parallel, proximal, and fused-have been observed. Of these abnormalities, only tripolar (2.4%) and parallel (1.4%) spindles are observable in diploid plants. As for polyploids, the increased ploidy is accompanied by an increase in the incidence of tripolar (22.8%) and parallel (8.1%) spindle orientations and emergence of two remaining abnormalities (proximal and fused spindles, 3.3%). As has been shown, the spindle position abnormalities in diploid plants have no effect on the meiotic products, whereas both dyads and triads are detectable among the tetrads in polyploid plants. Analysis of cytoskeletal remodeling has allowed for the insight into the role of interzonal radial microtubule system in spindle positioning during the second division. The reason underlying the change in spindle positioning is disturbed polymerization-depolymerization processes and interdigitation of microtubule plus ends within the interzonal cytoskeleton system in late telophase I-interkinesis and prophase II. As has been demonstrated, fused second-division spindles are formed as a result of fused cytoskeletal structures in prophase-prometaphase II in the case when the nuclei are drawn abnormally close to one another.
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Affiliation(s)
- Yuriy Vladimirovich Sidorchuk
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Prospekt Lavrentyeva 10, Novosibirsk, 630090, Russian Federation
| | - Elena Victorovna Deineko
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Prospekt Lavrentyeva 10, Novosibirsk, 630090, Russian Federation
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Kaufholdt D, Baillie CK, Meinen R, Mendel RR, Hänsch R. The Molybdenum Cofactor Biosynthesis Network: In vivo Protein-Protein Interactions of an Actin Associated Multi-Protein Complex. FRONTIERS IN PLANT SCIENCE 2017; 8:1946. [PMID: 29184564 PMCID: PMC5694649 DOI: 10.3389/fpls.2017.01946] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 10/30/2017] [Indexed: 05/09/2023]
Abstract
Survival of plants and nearly all organisms depends on the pterin based molybdenum cofactor (Moco) as well as its effective biosynthesis and insertion into apo-enzymes. To this end, both the central Moco biosynthesis enzymes are characterized and the conserved four-step reaction pathway for Moco biosynthesis is well-understood. However, protection mechanisms to prevent degradation during biosynthesis as well as transfer of the highly oxygen sensitive Moco and its intermediates are not fully enlightened. The formation of protein complexes involving transient protein-protein interactions is an efficient strategy for protected metabolic channelling of sensitive molecules. In this review, Moco biosynthesis and allocation network is presented and discussed. This network was intensively studied based on two in vivo interaction methods: bimolecular fluorescence complementation (BiFC) and split-luciferase. Whereas BiFC allows localisation of interacting partners, split-luciferase assay determines interaction strengths in vivo. Results demonstrate (i) interaction of Cnx2 and Cnx3 within the mitochondria and (ii) assembly of a biosynthesis complex including the cytosolic enzymes Cnx5, Cnx6, Cnx7, and Cnx1, which enables a protected transfer of intermediates. The whole complex is associated with actin filaments via Cnx1 as anchor protein. After biosynthesis, Moco needs to be handed over to the specific apo-enzymes. A potential pathway was discovered. Molybdenum-containing enzymes of the sulphite oxidase family interact directly with Cnx1. In contrast, the xanthine oxidoreductase family acquires Moco indirectly via a Moco binding protein (MoBP2) and Moco sulphurase ABA3. In summary, the uncovered interaction matrix enables an efficient transfer for intermediate and product protection via micro-compartmentation.
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Boruc J, Weimer AK, Stoppin-Mellet V, Mylle E, Kosetsu K, Cedeño C, Jaquinod M, Njo M, De Milde L, Tompa P, Gonzalez N, Inzé D, Beeckman T, Vantard M, Van Damme D. Phosphorylation of MAP65-1 by Arabidopsis Aurora Kinases Is Required for Efficient Cell Cycle Progression. PLANT PHYSIOLOGY 2017; 173:582-599. [PMID: 27879390 PMCID: PMC5210758 DOI: 10.1104/pp.16.01602] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 11/18/2016] [Indexed: 05/04/2023]
Abstract
Aurora kinases are key effectors of mitosis. Plant Auroras are functionally divided into two clades. The alpha Auroras (Aurora1 and Aurora2) associate with the spindle and the cell plate and are implicated in controlling formative divisions throughout plant development. The beta Aurora (Aurora3) localizes to centromeres and likely functions in chromosome separation. In contrast to the wealth of data available on the role of Aurora in other kingdoms, knowledge on their function in plants is merely emerging. This is exemplified by the fact that only histone H3 and the plant homolog of TPX2 have been identified as Aurora substrates in plants. Here we provide biochemical, genetic, and cell biological evidence that the microtubule-bundling protein MAP65-1-a member of the MAP65/Ase1/PRC1 protein family, implicated in central spindle formation and cytokinesis in animals, yeasts, and plants-is a genuine substrate of alpha Aurora kinases. MAP65-1 interacts with Aurora1 in vivo and is phosphorylated on two residues at its unfolded tail domain. Its overexpression and down-regulation antagonistically affect the alpha Aurora double mutant phenotypes. Phospho-mutant analysis shows that Aurora contributes to the microtubule bundling capacity of MAP65-1 in concert with other mitotic kinases.
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Affiliation(s)
- Joanna Boruc
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.);
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.);
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.);
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.);
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.);
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Annika K Weimer
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Virginie Stoppin-Mellet
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Evelien Mylle
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Ken Kosetsu
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Cesyen Cedeño
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Michel Jaquinod
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Maria Njo
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Liesbeth De Milde
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Peter Tompa
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Nathalie Gonzalez
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Dirk Inzé
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Tom Beeckman
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Marylin Vantard
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.)
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.)
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.)
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.)
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.)
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
| | - Daniël Van Damme
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.I., T.B., D.V.D.);
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium (J.B., A.K.W., E.M., K.K., M.N., L.D.M., N.G., D.V.D., D.I., T.B.);
- Laboratoire de Physiologie Cellulaire et Végétale, Institut de Recherches en Technologies et Sciences pour le Vivant, UMR5168, Centre National de la Recherche Scientifique/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Institut National de la Recherche Agronomique/Université Joseph-Fourier, Grenoble, France (V.S.-M.; M.V.);
- Institut National de la Santé et de la Recherche Médicale, U836, F-38000 Grenoble, France (V.S.-M., M.V.);
- Structural Biology Research Center, VIB, 1050 Brussels, Belgium (C.C., P.T.);
- Structural Biology Brussels, Vrije Universiteit Brussels, 1050 Brussels, Belgium (C.C., P.T.); and
- Exploring the Dynamics of Proteomes Laboratoire Biologie à Grande Echelle, U1038 Institut National de la Santé et de la Recherche Médicale/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Université Joseph-Fourier Institut de Recherches en Technologies et Sciences pour le Vivant/Commissariat à l'Énergie Atomique et aux Énergies Alternatives/Grenoble, F-38054 Grenoble Cedex 9, France (M.J.)
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Steiner A, Rybak K, Altmann M, McFarlane HE, Klaeger S, Nguyen N, Facher E, Ivakov A, Wanner G, Kuster B, Persson S, Braun P, Hauser MT, Assaad FF. Cell cycle-regulated PLEIADE/AtMAP65-3 links membrane and microtubule dynamics during plant cytokinesis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2016; 88:531-541. [PMID: 27420177 DOI: 10.1111/tpj.13275] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 06/27/2016] [Indexed: 06/06/2023]
Abstract
Cytokinesis, the partitioning of the cytoplasm following nuclear division, requires extensive coordination between cell cycle cues, membrane trafficking and microtubule dynamics. Plant cytokinesis occurs within a transient membrane compartment known as the cell plate, to which vesicles are delivered by a plant-specific microtubule array, the phragmoplast. While membrane proteins required for cytokinesis are known, how these are coordinated with microtubule dynamics and regulated by cell cycle cues remains unclear. Here, we document physical and genetic interactions between Transport Protein Particle II (TRAPPII) tethering factors and microtubule-associated proteins of the PLEIADE/AtMAP65 family. These interactions do not specifically affect the recruitment of either TRAPPII or MAP65 proteins to the cell plate or midzone. Rather, and based on single versus double mutant phenotypes, it appears that they are required to coordinate cytokinesis with the nuclear division cycle. As MAP65 family members are known to be targets of cell cycle-regulated kinases, our results provide a conceptual framework for how membrane and microtubule dynamics may be coordinated with each other and with the nuclear cycle during plant cytokinesis.
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Affiliation(s)
| | - Katarzyna Rybak
- Botany, Technische Universität München, Freising, 85354, Germany
| | - Melina Altmann
- Plant Systems Biology, Technische Universität München, Freising, 85354, Germany
| | - Heather E McFarlane
- School of Biosciences, University of Melbourne, Parkville, 3010, Victoria, Australia
- Max Planck Institute for Molecular Plant Physiology, Postdam, 14476, Germany
| | - Susan Klaeger
- Chair of Proteomics and Bioanalytics, Technische Universität München, Freising, 85354, Germany
| | - Ngoc Nguyen
- Botany, Technische Universität München, Freising, 85354, Germany
| | - Eva Facher
- Department Biologie I, Ludwig-Maximillians Universität, Planegg-Martinsried, 82152, Germany
| | - Alexander Ivakov
- School of Biosciences, University of Melbourne, Parkville, 3010, Victoria, Australia
- Max Planck Institute for Molecular Plant Physiology, Postdam, 14476, Germany
| | - Gerhard Wanner
- Department Biologie I, Ludwig-Maximillians Universität, Planegg-Martinsried, 82152, Germany
| | - Bernhard Kuster
- Chair of Proteomics and Bioanalytics, Technische Universität München, Freising, 85354, Germany
| | - Staffan Persson
- School of Biosciences, University of Melbourne, Parkville, 3010, Victoria, Australia
- Max Planck Institute for Molecular Plant Physiology, Postdam, 14476, Germany
- School of Biosciences, ARC Centre of Excellence in Plant Cell Walls, University of Melbourne, Parkville, 3010, Victoria, Australia
| | - Pascal Braun
- Plant Systems Biology, Technische Universität München, Freising, 85354, Germany
| | - Marie-Theres Hauser
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna, 1190, Austria
| | - Farhah F Assaad
- Botany, Technische Universität München, Freising, 85354, Germany
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