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Avalbaev A, Yuldashev R, Fedorova K, Petrova N, Fedina E, Gilmanova R, Karimova F, Shakirova F. 24-epibrassinolide-induced growth promotion of wheat seedlings is associated with changes in the proteome and tyrosine phosphoproteome. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23:456-463. [PMID: 33369832 DOI: 10.1111/plb.13233] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
Brassinosteroids (BRs) represent a unique class of steroidal plant hormones that display pronounced growth-promoting activity at very low concentrations. Although many efforts have been made to characterize the molecular basis of BR action, little is known about the mechanisms behind the growth-promoting effect of BRs at protein level. Proteomic analysis of response to the steroid plant hormone 24-epibrassinolide (EBR) in wheat seedling shoots (Triticum aestivum L.) was performed using two-dimensional electrophoresis (2-DE) and immunoblotting with highly specific antibodies (PY20) to phosphotyrosine. EBR-modulated proteins and phosphotyrosine polypeptides were identified using MALDI-TOF mass spectrometry. The study revealed that EBR-stimulated growth of wheat seedlings was accompanied by changes in the content of multiple proteins as well as in tyrosine phosphorylation of numerous polypeptides. Among them, 22 differentially accumulated proteins and 13 phosphotyrosine proteins were identified. Based on their performed functions, the identified proteins are involved in physiological processes (photosynthesis, growth, energy and amino acid metabolism) closely associated with intensification of plant metabolism. The EBR-induced changes in protein abundance and tyrosine phosphorylation profile may contribute to growth stimulation of wheat seedlings under the action of EBR. The obtained data suggest an important role for EBR in the activation of protein metabolism underlying fundamental physiological processes, including growth promotion.
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Affiliation(s)
- A Avalbaev
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054, Ufa, Russia
| | - R Yuldashev
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054, Ufa, Russia
| | - K Fedorova
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054, Ufa, Russia
| | - N Petrova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111, Kazan, Russia
| | - E Fedina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111, Kazan, Russia
| | - R Gilmanova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111, Kazan, Russia
| | - F Karimova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111, Kazan, Russia
| | - F Shakirova
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054, Ufa, Russia
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Baba AI, Rigó G, Ayaydin F, Rehman AU, Andrási N, Zsigmond L, Valkai I, Urbancsok J, Vass I, Pasternak T, Palme K, Szabados L, Cséplő Á. Functional Analysis of the Arabidopsis thaliana CDPK-Related Kinase Family: At CRK1 Regulates Responses to Continuous Light. Int J Mol Sci 2018; 19:ijms19051282. [PMID: 29693594 PMCID: PMC5983578 DOI: 10.3390/ijms19051282] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/12/2018] [Accepted: 04/22/2018] [Indexed: 12/24/2022] Open
Abstract
The Calcium-Dependent Protein Kinase (CDPK)-Related Kinase family (CRKs) consists of eight members in Arabidopsis. Recently, AtCRK5 was shown to play a direct role in the regulation of root gravitropic response involving polar auxin transport (PAT). However, limited information is available about the function of the other AtCRK genes. Here, we report a comparative analysis of the Arabidopsis CRK genes, including transcription regulation, intracellular localization, and biological function. AtCRK transcripts were detectable in all organs tested and a considerable variation in transcript levels was detected among them. Most AtCRK proteins localized at the plasma membrane as revealed by microscopic analysis of 35S::cCRK-GFP (Green Fluorescence Protein) expressing plants or protoplasts. Interestingly, 35S::cCRK1-GFP and 35S::cCRK7-GFP had a dual localization pattern which was associated with plasma membrane and endomembrane structures, as well. Analysis of T-DNA insertion mutants revealed that AtCRK genes are important for root growth and control of gravitropic responses in roots and hypocotyls. While Atcrk mutants were indistinguishable from wild type plants in short days, Atcrk1-1 mutant had serious growth defects under continuous illumination. Semi-dwarf phenotype of Atcrk1-1 was accompanied with chlorophyll depletion, disturbed photosynthesis, accumulation of singlet oxygen, and enhanced cell death in photosynthetic tissues. AtCRK1 is therefore important to maintain cellular homeostasis during continuous illumination.
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Affiliation(s)
- Abu Imran Baba
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
- Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, 6720 Szeged, Hungary.
| | - Gábor Rigó
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
- Department of Plant Biology, University of Szeged, 6726 Szeged, Hungary.
| | - Ferhan Ayaydin
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
| | - Ateeq Ur Rehman
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
| | - Norbert Andrási
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
| | - Laura Zsigmond
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
| | - Ildikó Valkai
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
| | - János Urbancsok
- Department of Biology, Norwegian University of Science and Technology, Høgskoleringen 5, NO-7491 Trondheim, Norway.
| | - Imre Vass
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
| | - Taras Pasternak
- Faculty of Biologie II, Albert-Ludwigs Universität, Schänzlestr. 1, 79104 Freiburg, Germany.
| | - Klaus Palme
- Faculty of Biologie II, Albert-Ludwigs Universität, Schänzlestr. 1, 79104 Freiburg, Germany.
| | - László Szabados
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
| | - Ágnes Cséplő
- Plant Biology Institute, Biological Research Centre, Hungarian Academy of Sciences, 6726 Szeged, Hungary.
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Bekešová S, Komis G, Křenek P, Vyplelová P, Ovečka M, Luptovčiak I, Illés P, Kuchařová A, Šamaj J. Monitoring protein phosphorylation by acrylamide pendant Phos-Tag™ in various plants. FRONTIERS IN PLANT SCIENCE 2015; 6:336. [PMID: 26029234 PMCID: PMC4429547 DOI: 10.3389/fpls.2015.00336] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 04/28/2015] [Indexed: 05/20/2023]
Abstract
The aim of the present study is to rationalize acrylamide pendant Phos-Tag™ in-gel discrimination of phosphorylated and non-phosphorylated plant protein species with standard immunoblot analysis, and optimize sample preparation, efficient electrophoretic separation and transfer. We tested variants of the method including extraction buffers suitable for preservation of phosphorylated protein species in crude extracts from plants and we addressed the importance of the cation (Mn(2+) or Zn(2+)) used in the gel recipe for efficient transfer to PVDF membranes for further immunoblot analysis. We demonstrate the monitoring of Medicago sativa stress-induced mitogen activated protein kinase (SIMK) in stress-treated wild type plants and transgenic SIMKK RNAi line. We further show the hyperosmotically-induced phosphorylation of the previously uncharacterized HvMPK4 of barley. The method is validated using inducible phosphorylation of barley and wheat α-tubulin and of Arabidopsis MPK6. Acrylamide pendant Phos-Tag™offers a flexible tool for studying protein phosphorylation in crops and Arabidopsis circumventing radioactive labeling and the use of phosphorylation specific antibodies.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Jozef Šamaj
- *Correspondence: Jozef Šamaj, Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
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Liu X, Xu J, Hu CD, Pan ZL, Zhang YC. The relationship between SNPs in the genes of TLR signal transduction pathway downstream elements and rheumatoid arthritis susceptibility. CYTOL GENET+ 2014. [PMID: 25016825 DOI: 10.3103/s0095452714030074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Toll-like receptors (TLRs) play an important role in the induction and regulation of the innate immune system or adaptive immune responses. Genetic variations within human TLRs have been reported to be associated with rheumatoid arthritis (RA). This study was conducted to investigate correlation between SNP of downstream mononucleotide in signal transduction of Toll-like receptors and predisposing genes of RA. There was obviously correlative between single nucleotide polymorphism and predisposing genes of RA. G-type of IL-1RAP rs766442 may be protecting genes of RA, while T-type alleles of IL-6R rs11265618 and IL-1RAP rs766442 may be susceptible genes of RA. In conclusion, the studies on the nucleis acid polymorphism in TLRs signal pathway contribute to disclose genes' influence on the attack mechanism of RA, early diagnosis and treatment of RA.
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Wang Y, Wang Y, Zhao YB, Chen DM, Han ZH, Zhang XZ. Protein phosphorylation differs significantly among ontogenetic phases in Malus seedlings. Proteome Sci 2014; 12:31. [PMID: 24904238 PMCID: PMC4046019 DOI: 10.1186/1477-5956-12-31] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 05/14/2014] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Although protein phosphorylation is an important post-translational modification affecting protein function and metabolism, dynamic changes in this process during ontogenesis remain unexplored in woody angiosperms. METHODS Phosphorylated proteins from leaves of three apple seedlings at juvenile, adult vegetative and reproductive stages were extracted and subjected to alkaline phosphatase pre-treatment. After separating the proteins by two-dimensional gel electrophoresis and phosphoprotein-specific Pro-Q Diamond staining, differentially expressed phosphoproteins were identified by MALDI-TOF-TOF mass spectrometry. RESULTS A total of 107 phosphorylated protein spots on nine gels (three ontogenetic phases × three seedlings) were identified by MALDI-TOF-TOF mass spectrometry. The 55 spots of ribulose-1, 5-bisphosphate carboxylase/oxygenase (Rubisco) large-chain fragments varied significantly in protein abundance and degree of phosphorylation among ontogenetic phases. Abundances of the 27 spots corresponding to Rubisco activase declined between juvenile and reproductive phases. More extensively, phosphorylated β-tubulin chain spots with lower isoelectric points were most abundant during juvenile and adult vegetative phases. CONCLUSIONS Protein phosphorylation varied significantly during vegetative phase change and floral transition in apple seedlings. Most of the observed changes were consistent among seedlings and between hybrid populations.
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Affiliation(s)
- Yan Wang
- Institute for Horticultural Plants, China Agricultural University, Beijing 100193, China
| | - Yi Wang
- Institute for Horticultural Plants, China Agricultural University, Beijing 100193, China
| | - Yong Bo Zhao
- Changli Institute of Pomology, Hebei Academy of Agricultural and Forestry Sciences, Changli 066600, China
| | - Dong Mei Chen
- Changli Institute of Pomology, Hebei Academy of Agricultural and Forestry Sciences, Changli 066600, China
| | - Zhen Hai Han
- Institute for Horticultural Plants, China Agricultural University, Beijing 100193, China
| | - Xin Zhong Zhang
- Institute for Horticultural Plants, China Agricultural University, Beijing 100193, China
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