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Lv P, Wan J, Zhang C, Hina A, Al Amin GM, Begum N, Zhao T. Unraveling the Diverse Roles of Neglected Genes Containing Domains of Unknown Function (DUFs): Progress and Perspective. Int J Mol Sci 2023; 24:ijms24044187. [PMID: 36835600 PMCID: PMC9966272 DOI: 10.3390/ijms24044187] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/22/2023] Open
Abstract
Domain of unknown function (DUF) is a general term for many uncharacterized domains with two distinct features: relatively conservative amino acid sequence and unknown function of the domain. In the Pfam 35.0 database, 4795 (24%) gene families belong to the DUF type, yet, their functions remain to be explored. This review summarizes the characteristics of the DUF protein families and their functions in regulating plant growth and development, generating responses to biotic and abiotic stress, and other regulatory roles in plant life. Though very limited information is available about these proteins yet, by taking advantage of emerging omics and bioinformatic tools, functional studies of DUF proteins could be utilized in future molecular studies.
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Affiliation(s)
- Peiyun Lv
- National Center for Soybean Improvement, Key Laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Jinlu Wan
- National Center for Soybean Improvement, Key Laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Chunting Zhang
- National Center for Soybean Improvement, Key Laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Aiman Hina
- National Center for Soybean Improvement, Key Laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - G M Al Amin
- Department of Botany, Jagannath University, Dhaka 1100, Bangladesh
| | - Naheeda Begum
- National Center for Soybean Improvement, Key Laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Correspondence: (N.B.); (T.Z.)
| | - Tuanjie Zhao
- National Center for Soybean Improvement, Key Laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Correspondence: (N.B.); (T.Z.)
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Albornos L, Martín I, Hernández-Nistal J, Labrador E, Dopico B. Three members of Medicago truncatula ST family (MtST4, MtST5 and MtST6) are specifically induced by hormones involved in biotic interactions. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 127:496-505. [PMID: 29705570 DOI: 10.1016/j.plaphy.2018.04.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 04/18/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
In this work, we study the function of the Medicago truncatula ST4, ST5 and ST6 proteins that belong to a protein family of unknown function characterized by the DUF2775 domain. Thus, we analyse their promoter sequence and activity, their transcript accumulation, and their subcellular location. The analysis of the three promoters showed different combination of cis-acting regulatory elements and they presented different activity pattern. Throughout development only ST6 mRNAs have been detected in most of the stages analysed, while ST4 was faintly detected in the roots and in the flowers and ST5 was always absent. The addition of MeJA, ET and SA revealed specific responses of the STs, the ST4 transcript accumulation increased by MeJA; the ST5 by MeJA and ET when applied together; and the ST6 by ET and by SA. Finally, the ST4 and ST5 proteins were in the cell wall whereas the ST6 had a dual location. From these results, we can conclude that the ST4, ST5 and ST6 RNAs are specifically and differentially up-regulated by MeJA, ET and SA, plant regulators also involved in the plant defence, pointing that ST4, ST5 and ST6 proteins might be involved in specific biotic interactions through different signalling pathways.
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Affiliation(s)
- Lucía Albornos
- Departamento de Botánica y Fisiología Vegetal, Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca, C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007, Salamanca, Spain.
| | - Ignacio Martín
- Departamento de Botánica y Fisiología Vegetal, Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca, C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007, Salamanca, Spain.
| | - Josefina Hernández-Nistal
- Departamento de Biología Funcional, University of Santiago de Compostela, Campus de Lugo, 27002, Lugo, Spain.
| | - Emilia Labrador
- Departamento de Botánica y Fisiología Vegetal, Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca, C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007, Salamanca, Spain.
| | - Berta Dopico
- Departamento de Botánica y Fisiología Vegetal, Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca, C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007, Salamanca, Spain.
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Albornos L, Martín I, Labrador E, Dopico B. Three members of Medicago truncatula ST family are ubiquitous during development and modulated by nutritional status (MtST1) and dehydration (MtST2 and MtST3). BMC PLANT BIOLOGY 2017; 17:117. [PMID: 28693485 PMCID: PMC5504553 DOI: 10.1186/s12870-017-1061-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 06/22/2017] [Indexed: 05/30/2023]
Abstract
BACKGROUND ShooT specific/Specific Tissue (ST) belong to a protein family of unknown function characterized by the DUF2775 domain and produced in specific taxonomic plant families, mainly Fabaceae and Asteraceae, with the Medicago truncatula ST family being the largest. The putative roles proposed for this family are cell elongation, biotic interactions, abiotic stress and N reserve. The aim of this work was to go deeper into the role of three M. truncatula ST proteins, namely ST1, ST2 and ST3. Our starting hypothesis was that each member of the family could perform a specific role, and hence, each ST gene would be subjected to a different type of regulation. RESULTS The search for cis-acting regulatory elements (CREs) in silico in pST1, pST2 and pST3 promoters showed prevalence of tissue/organ specific motifs, especially root- and seed-specific ones. Light, hormone, biotic and abiotic related motifs were also present. None of these pSTs showed the same combination of CREs, or presented the same activity pattern. In general, pST activity was associated with the vascular cylinder, mainly in roots. Promoter activation was highly specific and dissimilar during reproductive development. The ST1, ST2 and ST3 transcripts accumulated in most of the organs and developmental stages analysed - decreasing with age - and expression was higher in the roots than in the aerial parts and more abundant in light-grown plants. The effect of the different treatments on transcript accumulation indicated that ST1 behaved differently from ST2 and ST3, mainly in response to several hormones and dehydration treatments (NaCl or mannitol), upon which ST1 transcript levels decreased and ST2 and ST3 levels increased. Finally, the ST1 protein was located in the cell wall whereas ST2 and ST3 were present both in the cytoplasm and in the cell wall. CONCLUSIONS The ST proteins studied are ubiquitous proteins that could perform distinct/complementary roles in plant biology as they are encoded by differentially regulated genes. Based on these differences we have established two functional groups among the three STs. ST1 would participate in processes affected by nutritional status, while ST2 and ST3 seem to act when plants are challenged with abiotic stresses related to water stress and in physiologically controlled desiccation processes such as the seed maturation.
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Affiliation(s)
- Lucía Albornos
- Departamento de Botánica y Fisiología Vegetal. Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca. C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Ignacio Martín
- Departamento de Botánica y Fisiología Vegetal. Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca. C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Emilia Labrador
- Departamento de Botánica y Fisiología Vegetal. Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca. C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Berta Dopico
- Departamento de Botánica y Fisiología Vegetal. Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), University of Salamanca. C/ Licenciado Méndez Nieto s/n, Campus Miguel de Unamuno, 37007 Salamanca, Spain
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Albornos L, Cabrera J, Hernández-Nistal J, Martín I, Labrador E, Dopico B. Organ accumulation and subcellular location of Cicer arietinum ST1 protein. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2014; 224:44-53. [PMID: 24908505 DOI: 10.1016/j.plantsci.2014.03.020] [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: 01/08/2014] [Revised: 03/06/2014] [Accepted: 03/29/2014] [Indexed: 06/03/2023]
Abstract
The ST (ShooT Specific) proteins are a new family of proteins characterized by a signal peptide, tandem repeats of 25/26 amino acids, and a domain of unknown function (DUF2775), whose presence is limited to a few families of dicotyledonous plants, mainly Fabaceae and Asteraceae. Their function remains unknown, although involvement in plant growth, fruit morphogenesis or in biotic and abiotic interactions have been suggested. This work is focused on ST1, a Cicer arietinum ST protein. We established the protein accumulation in different tissues and organs of chickpea seedlings and plants and its subcellular localization, which could indicate the possible function of ST1. The raising of specific antibodies against ST1 protein revealed that its accumulation in epicotyls and radicles was related to their elongation rate. Its pattern of tissue location in cotyledons during seed formation and early seed germination, as well as its localization in the perivascular fibres of epicotyls and radicles, indicated a possible involvement in seed germination and seedling growth. ST1 protein appears both inside the cell and in the cell wall. This double subcellular localization was found in every organ in which the ST1 protein was detected: seeds, cotyledons and seedling epicotyls and radicles.
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Affiliation(s)
- Lucía Albornos
- Dpto de Fisiología Vegetal. Facultad de Biología, Centro Hispano-Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Pza Doctores de la Reina s/n., Salamanca 37007, Spain.
| | - Javier Cabrera
- Dpto de Fisiología Vegetal. Facultad de Biología, Centro Hispano-Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Pza Doctores de la Reina s/n., Salamanca 37007, Spain.
| | - Josefina Hernández-Nistal
- Dpto de Fisiología Vegetal, Universidad de Santiago de Compostela, Campus de Lugo, Lugo 27002, Spain.
| | - Ignacio Martín
- Dpto de Fisiología Vegetal. Facultad de Biología, Centro Hispano-Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Pza Doctores de la Reina s/n., Salamanca 37007, Spain.
| | - Emilia Labrador
- Dpto de Fisiología Vegetal. Facultad de Biología, Centro Hispano-Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Pza Doctores de la Reina s/n., Salamanca 37007, Spain.
| | - Berta Dopico
- Dpto de Fisiología Vegetal. Facultad de Biología, Centro Hispano-Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Pza Doctores de la Reina s/n., Salamanca 37007, Spain.
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Albornos L, Martín I, Iglesias R, Jiménez T, Labrador E, Dopico B. ST proteins, a new family of plant tandem repeat proteins with a DUF2775 domain mainly found in Fabaceae and Asteraceae. BMC PLANT BIOLOGY 2012; 12:207. [PMID: 23134664 PMCID: PMC3499167 DOI: 10.1186/1471-2229-12-207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 10/12/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND Many proteins with tandem repeats in their sequence have been described and classified according to the length of the repeats: I) Repeats of short oligopeptides (from 2 to 20 amino acids), including structural cell wall proteins and arabinogalactan proteins. II) Repeats that range in length from 20 to 40 residues, including proteins with a well-established three-dimensional structure often involved in mediating protein-protein interactions. (III) Longer repeats in the order of 100 amino acids that constitute structurally and functionally independent units. Here we analyse ShooT specific (ST) proteins, a family of proteins with tandem repeats of unknown function that were first found in Leguminosae, and their possible similarities to other proteins with tandem repeats. RESULTS ST protein sequences were only found in dicotyledonous plants, limited to several plant families, mainly the Fabaceae and the Asteraceae. ST mRNAs accumulate mainly in the roots and under biotic interactions. Most ST proteins have one or several Domain(s) of Unknown Function 2775 (DUF2775). All deduced ST proteins have a signal peptide, indicating that these proteins enter the secretory pathway, and the mature proteins have tandem repeat oligopeptides that share a hexapeptide (E/D)FEPRP followed by 4 partially conserved amino acids, which could determine a putative N-glycosylation signal, and a fully conserved tyrosine. In a phylogenetic tree, the sequences clade according to taxonomic group. A possible involvement in symbiosis and abiotic stress as well as in plant cell elongation is suggested, although different STs could play different roles in plant development. CONCLUSIONS We describe a new family of proteins called ST whose presence is limited to the plant kingdom, specifically to a few families of dicotyledonous plants. They present 20 to 40 amino acid tandem repeat sequences with different characteristics (signal peptide, DUF2775 domain, conservative repeat regions) from the described group of 20 to 40 amino acid tandem repeat proteins and also from known cell wall proteins with repeat sequences. Several putative roles in plant physiology can be inferred from the characteristics found.
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Affiliation(s)
- Lucía Albornos
- Dpto. de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Plaza Doctores de la Reina s/n. Campus Miguel Unamuno, Salamanca, 37007, Spain
| | - Ignacio Martín
- Dpto. de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Plaza Doctores de la Reina s/n. Campus Miguel Unamuno, Salamanca, 37007, Spain
| | - Rebeca Iglesias
- Dpto. de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Plaza Doctores de la Reina s/n. Campus Miguel Unamuno, Salamanca, 37007, Spain
| | - Teresa Jiménez
- Dpto. de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Plaza Doctores de la Reina s/n. Campus Miguel Unamuno, Salamanca, 37007, Spain
| | - Emilia Labrador
- Dpto. de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Plaza Doctores de la Reina s/n. Campus Miguel Unamuno, Salamanca, 37007, Spain
| | - Berta Dopico
- Dpto. de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Plaza Doctores de la Reina s/n. Campus Miguel Unamuno, Salamanca, 37007, Spain
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Fernandez L, Torregrosa L, Terrier N, Sreekantan L, Grimplet J, Davies C, Thomas MR, Romieu C, Ageorges A. Identification of genes associated with flesh morphogenesis during grapevine fruit development. PLANT MOLECULAR BIOLOGY 2007; 63:307-23. [PMID: 17268889 DOI: 10.1007/s11103-006-9090-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2006] [Accepted: 09/10/2006] [Indexed: 05/13/2023]
Abstract
Fruit morphogenesis is a process unique to the angiosperms, and yet little is known about its developmental control. Following fertilization, fruits typically undergo a dramatic enlargement that is accompanied by differentiation of numerous distinct cell types. To identify genes putatively involved in the early development of grapevine fruit, we used the fleshless berry mutant (Vitis vinifera L. cv Ugni Blanc) that has dramatically reduced fruit size due to a lack of pericarp development. Using oligo-specific arrays, 53 and 50 genes were identified as being down- and up-regulated, respectively, in the mutant. In parallel, Suppression Subtractive Hybridization performed between the mutant and the wild type (WT) allowed the identification of new transcripts differentially expressed during the first stages of mutant and WT pericarp development. From this data, the picture emerged that the mutation promotes the expression of several genes related to ripening and/or to stress and impairs the expression of several regulatory genes. Among those, five genes encoding proteins previously reported to be associated with, or involved in, developmental processes in other species (a specific tissue protein 2, ATHB13, a BURP domain protein, PISTILLATA, and YABBY2), were identified and investigated further using real-time PCR and in situ hybridization. Expression in the pericarp was confirmed, specific spatial and/or temporal patterns were detected and differences were observed between the WT and the mutant during fruit development. Expression of these genes appeared to be affected during young fruit development in the mutant, suggesting that they may play a role in grape berry morphogenesis.
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Affiliation(s)
- Lucie Fernandez
- UMR BEPC, Campus Agro-M/INRA, 2 place Viala, 34060, Montpellier, Cedex 01, France
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Hernández-Nistal J, Labrador E, Martín I, Jiménez T, Dopico B. Transcriptional profiling of cell wall protein genes in chickpea embryonic axes during germination and growth. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2006; 44:684-92. [PMID: 17110120 DOI: 10.1016/j.plaphy.2006.10.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Accepted: 10/09/2006] [Indexed: 05/01/2023]
Abstract
Cell wall hydrolases have been assumed to be involved in the regulation of seed germination, mostly through their contribution to the cell wall disassembly associated with endosperm cap weakening. In Cicer arietinum (a non-endospermic leguminosae seed), we have focused our research directly on the elongation process of the embryonic axes themselves during germination. The genes encoding cell wall proteins, previously implicated in the elongation of chickpea epicotyls, might also be involved in the expansion of embryonic axis cells, and the modulation of their expression could be part of the control of the germinative process. Thus, chickpea alpha-expansins and xyloglucan endotransglycosylase/hydrolase (XTH) acting on the cellulose/xyloglucan network seem to be involved in the elongation of both chickpea epicotyls and embryonic axes, although the products of different genes perform their actions on each organ. Among the four known cDNAs encoding chickpea alpha-expansins, Ca-EXPA1 was the only isoform highly expressed in embryonic axes during germination. In contrast to epicotyl elongation, the genes encoding cell wall beta-galactosidases, involved in pectin degradation, were not expressed during germination, suggesting no role in embryonic axis elongation, mainly due to the different metabolism of pectins during cell wall loosening in embryonic axis or epicotyl cells. The results concerning CanST-1 and -2, encoding two growth-related cell wall proteins, suggested that these genes were not involved in elongation of embryonic axes during germination. The transcription pattern of Cap28, which encodes a glutamic acid rich cell wall protein of unknown function, indicated a role in the development of the embryonic axes during germination.
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Affiliation(s)
- J Hernández-Nistal
- Departamento de Fisiología Vegetal, Universidad de Santiago de Compostela, Lugo 27002, Spain
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Lane BG, Cuming AC, Frégeau J, Carpita NC, Hurkman WJ, Bernier F, Dratewka-Kos E, Kennedy TD. Germin isoforms are discrete temporal markers of wheat development. Pseudogermin is a uniquely thermostable water-soluble oligomeric protein in ungerminated embryos and like germin in germinated embryos, it is incorporated into cell walls. EUROPEAN JOURNAL OF BIOCHEMISTRY 1992; 209:961-9. [PMID: 1425703 DOI: 10.1111/j.1432-1033.1992.tb17369.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Nascent synthesis and accumulation of germin and its mRNA mark the onset of renewed growth when wheat embryos are germinated in water. Germin is a water-soluble, pepsin-resistant protein that is not found in immature embryos, or in mature embryos before their germination. An antiserum was raised by injecting rabbits with germin that was freed of other proteins by pepsinization and gel filtration. The antiserum has been used to detect, in extracts of mature embryos from dry, ungerminated wheat grains, a protein that is antigenically related to germin. The antigenically related protein has been named pseudogermin. Pseudogermin accumulates, maximally, between 20-25-days postanthesis, then declines appreciably in amount by 30-days postanthesis, in soluble extracts of immature embryos from several wheat varieties. The antiserum was also used to identify germin and pseudogermin among the proteins extracted from cell walls and to bind immunogold to cell walls preparatory to visualizing freeze-cleaved embryos by scanning electron microscopy. Wall-associated germin accounts for about 40% of the total germin in germinating wheat embryos. Appearance of germin in the apoplast is the most conspicuous germination-related change in the distribution of cell-wall proteins. It seems that germin may act at the level of the apoplast and that pseudogermin may subsume the role of germin at low water potentials during embryogenesis. The N-terminal eicosapeptide sequences in germin and pseudogermin are very similar but SDS/PAGE analysis detects discrete differences between the mobilities of their constituent monomers as well as gross differences between the stabilities of the parent oligomers. Like germin, pseudogermin is a water-soluble, pepsin-resistant protein, but pseudogermin has unprecedented disulphide-independent thermostability properties that have never been previously reported for a water-soluble oligomeric protein. Polysaccharides that co-purify with otherwise pure specimens of germin (and pseudogermin) have been isolated for analysis and shown to be highly substituted glucuronogalactoarabinoxylans. The possible biological significance of selective and tenacious association between germin and glucuronogalactoarabinoxylans is discussed in relation to cell expansion during embryogenic and germinative development of wheat, as are some peculiarities of amino-acid sequence that suggest a possible relation between germin and a proton-specific ion pump: gastric ATPase.
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Affiliation(s)
- B G Lane
- Department of Biochemistry, University of Toronto, Canada
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Bewley JD, Marcus A. Gene expression in seed development and germination. PROGRESS IN NUCLEIC ACID RESEARCH AND MOLECULAR BIOLOGY 1990; 38:165-93. [PMID: 2183293 DOI: 10.1016/s0079-6603(08)60711-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- J D Bewley
- Department of Botany, University of Guelph, Ontario, Canada
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Dratewka-Kos E, Rahman S, Grzelczak ZF, Kennedy TD, Murray RK, Lane BG. Polypeptide Structure of Germin as Deduced from cDNA Sequencing. J Biol Chem 1989. [DOI: 10.1016/s0021-9258(18)83675-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Clonal Propagation of Mature Trees: Problems and Possible Solutions. CELL AND TISSUE CULTURE IN FORESTRY 1987. [DOI: 10.1007/978-94-017-0994-1_15] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Cohn NS, Mitchell JP. Immunocytochemical localization of proteins in differentiating tissues of Pisum sativum. HISTOCHEMISTRY 1986; 84:432-8. [PMID: 3522499 DOI: 10.1007/bf00482975] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Although there may be documented morphological changes during development, it is obvious that important changes in protein content occur in a vascular plant during the several stages of differentiation. In the absence of the latter information, an approach has been established for the localization of antigenic proteins in developing tissues of Pisum sativum. Monoclonal antibodies were raised to proteins extracted from pea internode tissue, and employed for the localization of three proteins in tissue sections. One of the proteins has two polypeptide subunits with molecular weights of 25,000 and 40,000 daltons, and the antibody binds to both of them. The three monoclonal antibodies produce different patterns of cellular localization in the tissue sections, as visualized by indirect immunocytochemical labeling. In another series of analyses, quantitative and qualitative differences in the protein contents of apical shoot tissue and mature internode shoot tissue have been found. These studies were based on the use of Western blots with both polyclonal (rabbit) antibodies and monoclonal (mouse) antibodies.
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