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Elasad M, Ondati E, Wei H, Wang H, Su J, Fan S, Pang C, Yu S. Functional analysis of nine cotton genes related to leaf senescence in Gossypium hirsutum L. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2018; 24:729-739. [PMID: 30150850 PMCID: PMC6103938 DOI: 10.1007/s12298-018-0561-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/14/2017] [Accepted: 05/21/2018] [Indexed: 05/06/2023]
Abstract
Leaf senescence is defined as a deterioration process that continues to the final developmental stage of leaf. This process is usually regulated by both external and internal factors. There are about 5356 senescence associated genes belonging to 44 plant species. A great number of these genes were identified in Arabidopsis. Leaf senescence can be regulated by many transcription factors. In this study, nine gene families were selected according to their expression levels during leaf senescence from our laboratory database. Phylogenetic tree was constructed by MEGA6. Cultivated cotton CCRI-10 seeds were sown in the experimental field of Institute of Cotton Research of CAAS for profiling and leaf development stages analysis. For abiotic (drought and salt) stress and phytohormone (ABA, SA, ET and JA) treatments, CCRI-10 seeds were sown in potting soil at 25 °C in a chamber room. Total RNA was isolated from various samples and the cDNA prepared for qRT-PCR. The comparative CT method was applied to calculate the relative expression levels of genes. For phylogenetic tree, nine cotton genes were divided into two groups, most of homologous genes in previous studies showed roles in phytohormones and abiotic stress. Expression profiling of the nine genes showed different patterns of tissue specific expression. In leaf development stages, majority of cotton genes showed high expression in early and complete senescence stage. Furthermore, most of cotton genes have positive or negative response to phytohormones and abiotic stress. Based on the results of this study, we found four cotton genes CotAD_07559, CotAD_37422, CotAD_21204 and CotAD_54353 as candidate genes for leaves senescence and abiotic stress.
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Affiliation(s)
- Mohammed Elasad
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
| | - Evans Ondati
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
| | - Hengling Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
| | - Hantao Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
| | - Junji Su
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
| | - Shuli Fan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
| | - Chaoyou Pang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
| | - Shuxun Yu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 Henan Province China
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2
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McIntosh KB, Bonham-Smith PC. The two ribosomal protein L23A genes are differentially transcribed in Arabidopsis thaliana. Genome 2007; 48:443-54. [PMID: 16121241 DOI: 10.1139/g05-007] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Arabidopsis thaliana ribosomal protein (r-protein) L23A (RPL23A) is a member of the conserved L23/L25 family of primary ribosomal RNA (rRNA) binding proteins. The 2 AtRPL23A isoforms, RPL23A-1 and RPL23A-2, are 94% identical at the amino acid level, yet RPL23A-1 and RPL23A-2 share only approximately 40-50% primary sequence identity within the 5' regulatory regions. While the RPL23A-1 and -2 5' regulatory regions share many similar predicted motifs, the arrangement and number of these motifs differs between the 2 genes. Differences in regulation between RPL23A-1 and -2 have been investigated via reverse transcription-PCR (RT-PCR) expression profiles. Overall, transcript abundance for RPL23A-1 and -2 varied slightly in specific tissues and under some abiotic stresses. The highest transcript abundance for both RPL23A genes was detected in mitotically active tissues such as bud, flower and elongating carpel, as well as in root and stem while the lowest transcript levels were found in mature leaf and bract. Hormone-treated seedlings showed increased RPL23A-1 and -2 transcript levels following IAA and BAP treatment while ABA treatment resulted in a transient lowering of transcript levels. Expression patterns differed between RPL23A-1 and -2 in cold-, wound-, and copper-stressed seedlings. In all tissues examined, RPL23A-2 transcript levels were consistently lower than those of RPL23A-1. This report shows differential transcriptional regulation of the 2 RPL23A genes, which should no longer be identified as "housekeeping" genes.
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Affiliation(s)
- Kerri B McIntosh
- Department of Biology, University of Saskatchewan, Saskatoon, Canada
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3
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McIntosh KB, Bonham-Smith PC. Ribosomal protein gene regulation: what about plants? ACTA ACUST UNITED AC 2006. [DOI: 10.1139/b06-014] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The ribosome is an intricate ribonucleoprotein complex with a multitude of protein constituents present in equimolar amounts. Coordination of the synthesis of these ribosomal proteins (r-proteins) presents a major challenge to the cell. Although most r-proteins are highly conserved, the mechanisms by which r-protein gene expression is regulated often differ widely among species. While the primary regulatory mechanisms coordinating r-protein synthesis in bacteria, yeast, and animals have been identified, the mechanisms governing the coordination of plant r-protein expression remain largely unexplored. In addition, plants are unique among eukaryotes in carrying multiple (often more than two) functional genes encoding each r-protein, which substantially complicates coordinate expression. A survey of the current knowledge regarding coordinated systems of r-protein gene expression in different model organisms suggests that vertebrate r-protein gene regulation provides a valuable comparison for plants.
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Affiliation(s)
- Kerri B. McIntosh
- Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK S7N 5E2, Canada
| | - Peta C. Bonham-Smith
- Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK S7N 5E2, Canada
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4
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Moran DL. Characterization of the structure and expression of a highly conserved ribosomal protein gene, L9, from pea. Gene 2000; 253:19-29. [PMID: 10925199 DOI: 10.1016/s0378-1119(00)00222-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The eukaryotic ribosomal protein (RP) L9 is highly conserved in nature, and its gene is expressed to high levels in the actively growing tissues of pea. The transcriptional activity of the gene is highest in root, cambial and shoot meristems and immature tissues of the plant. Promoter deletion analysis using constructs employing the reporter gene gus were stably transferred into tobacco and revealed that the fully functional promoter is found in the first 316bp upstream from the start codon. Transgenic pea plants carrying one of these constructs show that translational efficiency mirrors gene transcription; gene expression appears to be developmentally regulated at the level of transcription. The coding region of the gene shares 80% amino acid homology with Arabidopsis and 76% homology with rice. Comparisons of the gene structure to that of the human, fruit fly, yeast, and Arabidopsis homologues reveal a close relationship in both promoter structure and intron insertion sites with the Arabidopsis gene. A nucleotide sequence alignment of the pea gene with other plant RP genes revealed that a sequence, -TTAGGGTTTT-, was commonly found in the forward and/or the inverted orientation at or near the TATA boxes of the promoters of these genes and may have a role in regulating the coordinate production of the RP genes in plants.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Blotting, Northern
- Conserved Sequence
- DNA, Plant/chemistry
- DNA, Plant/genetics
- Gene Expression Regulation, Developmental
- Gene Expression Regulation, Plant
- Genes, Plant/genetics
- Glucuronidase/genetics
- Glucuronidase/metabolism
- Molecular Sequence Data
- Pisum sativum/genetics
- Pisum sativum/growth & development
- Plants, Genetically Modified
- Plants, Toxic
- Promoter Regions, Genetic/genetics
- RNA, Plant/genetics
- RNA, Plant/metabolism
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/metabolism
- Ribosomal Proteins/genetics
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Deletion
- Sequence Homology, Amino Acid
- Sequence Homology, Nucleic Acid
- Nicotiana/genetics
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Affiliation(s)
- D L Moran
- Ohio University, Department of Environmental and Plant Biology, 317 Porter Hall, Athens, OH 45701, USA.
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5
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Zhao YY, Xu T, Zucchi P, Bogorad L. Subpopulations of chloroplast ribosomes change during photoregulated development of Zea mays leaves: ribosomal proteins L2, L21, and L29. Proc Natl Acad Sci U S A 1999; 96:8997-9002. [PMID: 10430884 PMCID: PMC17721 DOI: 10.1073/pnas.96.16.8997] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Seedlings grown in darkness, i.e., etiolated seedlings, lack chlorophyll and most other components of the photosynthetic apparatus. On illumination, the plastids become photosynthetically competent through the production of chlorophylls and proteins encoded by certain chloroplast and nuclear genes. There are two types of photosynthetic cells in leaves of the C4 plant maize: bundle sheath cells (BSC) and adjacent mesophyll cells (MC). Some proteins of the maize photosynthetic machinery are solely or preferentially localized in MC and others in BSC. A particular gene may be photoregulated up in one cell type and down in the other. Transcripts of the nuclear gene rpl29, encoding the chloroplast ribosomal protein L29, increase in abundance about 17-fold during light-induced maturation of plastids. There is about 1.5 times more L29 protein in ribosomes of greening leaves than in ribosomes of unilluminated leaves; the L29 contents of MC and BSC are about the same. However, L21 is present about equally in plastid ribosomes of unilluminated and illuminated seedlings. In contrast to both L29 and L21, the fraction of the ribosome population containing L2 is about the same in MC and BSC of etiolated leaves but, on illumination, the proportion of the ribosome population with L2 increases in BSC but not in MC. The existence of different subpopulations of plastid ribosomes-e.g., those with and without L21 and/or L29 during development-evokes interesting, but as yet unanswered, questions about the roles of different types of ribosomes in differentiation.
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Affiliation(s)
- Y Y Zhao
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA
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6
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Dai Z, Gao J, An K, Lee JM, Edwards GE, An G. Promoter elements controlling developmental and environmental regulation of a tobacco ribosomal protein gene L34. PLANT MOLECULAR BIOLOGY 1996; 32:1055-65. [PMID: 9002604 DOI: 10.1007/bf00041389] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The rpL34 gene, which encodes a cytoplasmic ribosomal protein with a high homology to the rat 60S r-protein L34, was isolated from a genomic library of tobacco (Nicotiana tabacum L. cv. Xanthi-nc). A 1500 bp upstream promoter fragment was fused to the chloramphenicol acetyltransferase (CAT) reporter gene or beta-glucuronidase (GUS) reporter gene and transferred into tobacco plants by the Agrobhacterium-mediated leaf disk transformation method. Analysis of CAT activity in leaf tissues showed that mechanical wounding increased the rpL34 promoter activity about 5 times as compared to untreated controls and that the promoter activity was further enhanced by plant growth regulators, 2,4-dichlorophenoxyacetic acid and benzyladenine. Histochemical GUS staining patterns of the transgenic plants showed that the rpL34 promoter activity is high in actively growing tissues, including various meristems, floral organs, and developing fruits. A series of 5' deletion analyses of the rpL34 promoter indicated that a 50 bp region located between -179 and -129 is essential for wound, auxin and cytokinin responses. Deletion of this region reduced the promoter activity to an undetectable level. Insertion of the 50 nucleotide sequence into a minimal promoter restored the promoter activity and the promoter strength was proportional to the copy number of the upstream sequence. The role of TATA and CAAT box regions was studied by a series of 3' deletion analyses. A 3' deletion up to -28 did not significantly affect the promoter strength. However deletion of the promoter up to 70 bp, which deleted the TATA box region, significantly reduced promoter activity. Further deletion of the promoter up to - 104. eliminating the CAAT box region, abolished the promoter activity. These results suggest that the TATA box and CAAT box regions are also important for the rpL34 promoter activity in addition to the 50 bp upstream region.
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Affiliation(s)
- Z Dai
- Institute of Biological Chemistry, Washington State University, Pullman 99164, USA
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7
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Abstract
Protein synthesis in both eukaryotic and prokaryotic cells is a complex process requiring a large number of macromolecules: initiation factors, elongation factors, termination factors, ribosomes, mRNA, amino-acylsynthetases and tRNAs. This review focuses on our current knowledge of protein synthesis in higher plants.
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Affiliation(s)
- K S Browning
- Department of Chemistry and Biochemistry, University of Texas at Austin 78712, USA
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8
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Garcia-Hernandez M, Davies E, Baskin TI, Staswick PE. Association of Plant p40 Protein with Ribosomes Is Enhanced When Polyribosomes Form during Periods of Active Tissue Growth. PLANT PHYSIOLOGY 1996; 111:559-568. [PMID: 12226310 PMCID: PMC157867 DOI: 10.1104/pp.111.2.559] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
p40s are acidic proteins of eukaryotic cells occurring either free in the cytoplasm or in association with ribosomes, the latter occurring in both monosomes and polysomes. p40s may play a role in the regulation of protein synthesis, although the exact mechanism is not known. Leaves of all 10 plant species examined here, including both monocots and dicots, contained proteins detected on immunoblots with Arabidopsis thaliana p40 antiserum. The number and apparent size of the protein bands were variable even among closely related species. Abundance of p40 relative to ribosomal content during soybean (Glycine max L.) seed germination and during seed and leaf development was examined. p40 abundance correlated with periods of active tissue growth and high polysome content. The plant growth regulator indole acetic acid caused an increase in polysome formation in etiolated pea (Pisum sativum L.) plants and a concomitant recruitment of p40 into polysomes. Subcellular localization at the microscopy level indicated that the pattern of p40 staining is very similar to that for RNA, except that p40 is excluded from the nucleus. These data suggest that p40 is an accessory protein of the ribosome that might play a role in plant growth and development.
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Affiliation(s)
- M. Garcia-Hernandez
- Department of Agronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68583-0915 (M.G.-H., P.E.S.)
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9
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Moore J, Jacobs HT, Kaiser K. Characterisation of Saccharomyces cerevisiae genes encoding ribosomal protein YL6. MOLECULAR & GENERAL GENETICS : MGG 1995; 247:247-54. [PMID: 7753035 DOI: 10.1007/bf00705656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We have characterised a Saccharomyces cerevisiae cDNA (cDNA13), originally isolated on the basis of the short half-life of the corresponding mRNA. We show here that its sequence is closely related to that of the genes encoding ribosomal proteins K37, KD4 and K5 of Schizosaccharomyces pombe. 'mRNA13' also behaves like other mRNAs encoding ribosomal proteins, in that its abundance increases sharply when glucose is added to cells grown on ethanol (nutrient-upshift), and declines when cells are subjected to a mild heat-shock. Unspliced mRNA13 accumulates when cells bearing a temperature-sensitive splicing mutation are grown at the restrictive temperature. The gene(s) corresponding to cDNA13, like other ribosomal protein genes of S. cerevisiae, thus contain an intron. Southern blot analysis indicates the presence of two separate loci related to cDNA13 in the S. cerevisiae genome. From the sequence of one of these, a complete polypeptide sequence was deduced. The first 40 amino acids are identical to those of YL6, a S. cerevisiae ribosomal protein characterised only by N-terminal protein sequence analysis. There is clear evidence within the genomic sequence for the predicted intron, and for elements similar to those that regulate expression of other S. cerevisiae ribosomal protein genes.
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Affiliation(s)
- J Moore
- Institute of Genetics, University of Glasgow, UK
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10
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Baima S, Sessa G, Ruberti I, Morelli G. A cDNA encoding Arabidopsis thaliana cytoplasmic ribosomal protein L18. Gene 1995; 153:171-4. [PMID: 7875584 DOI: 10.1016/0378-1119(94)00730-g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A cDNA encoding ribosomal (r) protein L18 of Arabidopsis thaliana (At) was isolated and characterized. The nucleotide sequence contains a 563-bp open reading frame that encodes a 20.9-kDa basic protein. Amino-acid comparison indicated that the predicted L18 r-protein of At has a high degree of homology with L18 of distantly related organisms such as yeast, Xenopus laevis and rat. Genomic DNA analysis suggested that L18 is encoded by a single locus in At. An mRNA of approx. 0.9 kb is detected in all the tissues and developmental stages analyzed.
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Affiliation(s)
- S Baima
- Unità di Nutrizione Sperimentale, Istituto Nazionale della Nutrizione, Rome, Italy
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11
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Asemota O, Breda C, Sallaud C, el Turk J, de Kozak I, Buffard D, Esnault R, Kondorosi A. Cloning and expression of a cDNA encoding a cytoplasmic L5 ribosomal protein from alfalfa (Medicago sativa L.). PLANT MOLECULAR BIOLOGY 1994; 26:1201-1205. [PMID: 7811977 DOI: 10.1007/bf00040700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A cDNA encoding a putative cytoplasmic ribosomal protein L5 from alfalfa (MsRL5), the first sequence from higher plants, has been characterized. The derived amino acid sequence of 181 residues contains the L5 signature, is 72.2% identical to yeast ribosomal L5 and shares high identity with other RL5 peptides from eukaryotic origin. The sequence does not contain any signal or transit peptide and therefore might be cytoplasmic. In all alfalfa organs examined MsRL5 transcripts were detected at approximately equal levels.
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Affiliation(s)
- O Asemota
- Institut des Sciences Végétales, CNRS, Gif sur Yvette, France
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12
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Gao J, Kim SR, Chung YY, Lee JM, An G. Developmental and environmental regulation of two ribosomal protein genes in tobacco. PLANT MOLECULAR BIOLOGY 1994; 25:761-70. [PMID: 8075394 DOI: 10.1007/bf00028872] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two cDNA clones, TSC29 and TSC40, were isolated from a cDNA library prepared from three-day-old tobacco cell suspension grown to early exponential stage. DNA sequence analyses and database searches revealed that the TSC29 transcript encodes a protein which is highly homologous to eukaryotic 60S ribosomal (r)-protein L25 and that the TSC40 product is homologous to rat 60S r-protein L34. Southern blot analysis showed that the putative r-protein genes are members of multigene families. Transcript levels of both genes were most abundant in three-day-old cell suspension and declined in older cultures. Transcripts were also present in plant vegetative and reproductive organs. However, for TSC40 in particular, the mRNA levels were lower in plant organs than in three-day-old cell suspension. Stems and roots exhibited higher expression than leaves and flowers, indicating that these clones are differentially regulated in various cell types. Both genes were expressed at low levels in mature seeds but transcript levels significantly increased after one day of germination, remained at a high level until day 4, and declined after day 5. In situ localization experiments with germinating seedlings revealed that the TSC29 transcript was preferentially localized in root tips, epidermis, and endosperm. Wounding increased the steady-state mRNA amounts of these r-protein genes, and 2,4-dichlorophenoxyacetic acid and benzyladenine further increased the transcript level.
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Affiliation(s)
- J Gao
- Department of Chemical Engineering, Washington State University, Pullman 99164-6340
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13
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Shi YB, Liang VC. Cloning and characterization of the ribosomal protein L8 gene from Xenopus laevis. BIOCHIMICA ET BIOPHYSICA ACTA 1994; 1217:227-8. [PMID: 8110841 DOI: 10.1016/0167-4781(94)90042-6] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A full-length cDNA clone encoding the Xenopus laevis ribosomal protein L8 has been isolated and sequenced. The cDNA has an open reading frame of 257 amino acids. The deduced amino acid sequence is rich in basic residues and extremely homologous to the rat L8 protein. The Xenopus gene is ubiquitously expressed at fairly constant levels during development, consistent with its role as a house-keeping gene.
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Affiliation(s)
- Y B Shi
- Laboratory of Molecular Embryology, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
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14
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Wang MB, Boulter D, Gatehouse JA. Characterization and sequencing of cDNA clone encoding the phloem protein PP2 of Cucurbita pepo. PLANT MOLECULAR BIOLOGY 1994; 24:159-170. [PMID: 8111014 DOI: 10.1007/bf00040582] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Direct N-terminal amino acid sequencing of the phloem protein 2 (PP2) from 3-month old Cucurbita pepo L. (pumpkin), purified by SDS-PAGE and blotted onto PVDF membrane, showed that the protein had a blocked N-terminus. However, after in situ cleavage of the polypeptide in a gel slice by cyanogen bromide, 75 residues of sequences on two cyanogen bromide fragments were determined. An oligonucleotide probe based on this amino acid sequence was used to screen a cDNA library, constructed from mRNA of 3-5-day old seedling hypocotyls, in lambda ZAP II. A cDNA clone (p11A) predicted an amino acid sequence of 218 residues, in full agreement with the sequences determined for two CNBr fragments of PP2, and suggests that the N-terminus of the protein is a blocked methionine residue which is cleaved off by CNBr. Two additional cDNA clones were sequenced but no heterogeneity in the PP2 sequence was found. The deduced amino acid sequence of C. pepo differs in nine residues from the recently published sequence of Cucurbita maxima (Bostwick et al., Plant Cell 4 (1992) 1539-1548). Southern blot showed that PP2 is encoded by a gene family with a relatively large number of members (estimated as 7-15 per haploid genome).
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Affiliation(s)
- M B Wang
- Department of Biological Sciences, University of Durham, UK
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15
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Nishi R, Kidou S, Uchimiya H, Kato A. The primary structure of two proteins from the large ribosomal subunit of rice. BIOCHIMICA ET BIOPHYSICA ACTA 1993; 1216:110-2. [PMID: 8218398 DOI: 10.1016/0167-4781(93)90043-d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We isolated two rice cDNAs which encode an open reading frame of 389 amino acids. Their deduced amino acid sequence corresponded to the ribosomal protein (r-protein). A comparison of amino acid sequence shows that the deduced amino acid sequence of one cDNA is homologous to Arabidopsis, yeast and the rat r-protein L3. Another encoded products with a high degree of homology to the rat r-protein L7A and yeast r-protein L4.
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Affiliation(s)
- R Nishi
- Department of Biology, Faculty of Science, Hokkaido University, Sapporo, Japan
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16
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Nishi R, Hashimoto H, Uchimiya H, Kato A. The primary structure of two proteins from the small ribosomal subunit of rice. BIOCHIMICA ET BIOPHYSICA ACTA 1993; 1216:113-4. [PMID: 8218399 DOI: 10.1016/0167-4781(93)90044-e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We isolated two rice cDNAs which encode an open reading frame of 117 amino acids or 82 amino acids. Their deduced amino acid sequence correspond to the ribosomal proteins (r-protein). A comparison of the amino acid sequence shows that the deduced amino acid sequence of one cDNA is homologous to the rat r-protein S20 and Xenopus r-protein S22. Another encoded products with a high degree of homology to the rat r-protein S21 and the yeast r-protein YS25.
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Affiliation(s)
- R Nishi
- Department of Biology, Faculty of Science, Hokkaido University, Sapporo, Japan
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17
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Joanin P, Gigot C, Philipps G. cDNA nucleotide sequence and expression of a maize cytoplasmic ribosomal protein S13 gene. PLANT MOLECULAR BIOLOGY 1993; 21:701-704. [PMID: 8448368 DOI: 10.1007/bf00014553] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The complete amino acid sequence of a cytoplasmic ribosomal protein S13 of maize was deduced from the cDNA isolated from a maize cDNA library. The encoded protein is 151 amino acids long and shows a homology of 73% with the corresponding protein S13 of rat. Southern blots analysis shows that the maize protein S13 is encoded by a small multigene family conserved in plant species closely related to maize. The S13 RNAs accumulate preferentially in proliferating tissues and cells and their transcription occurs in parallel to the DNA synthesis.
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Affiliation(s)
- P Joanin
- Institut de Biologie Moléculaire des Plantes du C.N.R.S., Université Louis Pasteur, Strasbourg, France
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18
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New nucleotide sequence data on the EMBL File Server. Nucleic Acids Res 1992; 20:2905-27. [PMID: 1614890 PMCID: PMC336956 DOI: 10.1093/nar/20.11.2905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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