Abstract:
:A cDNA coding for phytocystatin, a protease inhibitor, was isolated from wheat embryos by differential display RT-PCR and the corresponding full-length cDNA (named WC5 for wheat cystatin gene 5) subsequently obtained by RACE. The deduced primary sequence of the protein suggests the presence of a 28 amino acid N-terminal signal sequence and a 100 amino acid mature protein containing the three consensus motifs known to interact with the active site of cysteine peptidases. Northern and western analysis revealed a spatio-temporal pattern of the cystatin gene expression during caryopse development. In the embryo, WC5 was only expressed during early embryogenesis whereas, in seed covering layers, WC5 expression was restricted to the maturation stage of grain development. In addition, immunolocalization experiments showed that cystatin accumulated in the aleurone layer of the maturating seed and in the parenchymal tissues of the embryo scutellum. A recombinant form of the wheat cystatin was shown to be able to inhibit peptidase activities present in whole seed protein extracts. In addition, immunological techniques allowed us to identify two putative target peptidases. The possible roles of the cystatin protein are discussed in relation with tissular localization and putative peptidase targets during seed maturation.
journal_name
Plant Mol Bioljournal_title
Plant molecular biologyauthors
Corr-Menguy F,Cejudo FJ,Mazubert C,Vidal J,Lelandais-Brière C,Torres G,Rode A,Hartmann Cdoi
10.1023/a:1019906031305subject
Has Abstractpub_date
2002-11-01 00:00:00pages
687-98issue
4-5eissn
0167-4412issn
1573-5028journal_volume
50pub_type
杂志文章abstract::It has been known for more than a decade that increasing the gene copy number does not necessarily lead to increased gene activity. Plants have developed efficient mechanisms such as post-transcriptional gene silencing (PTGS) to regulate abnormal gene expression in a sequence-specific fashion. PTGS of (trans)genes can...
journal_title:Plant molecular biology
pub_type: 杂志文章,评审
doi:10.1023/a:1006499832424
更新日期:2000-06-01 00:00:00
abstract::The synthesis, modification, and breakdown of carbohydrates is one of the most fundamentally important reactions in nature. The structural and functional diversity of glycosides is mirrored by a vast array of enzymes involved in their synthesis (glycosyltransferases), modification (carbohydrate esterases) and breakdow...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:
更新日期:2001-09-01 00:00:00
abstract::HSP100 protein is an important component of the heat-shock response in diverse organisms. Using specific primers based on cDNA sequence, rice hsp101 gene was PCR-amplified and sequenced. Southern analysis revealed that there appears to be a single gene per haploid genome coding for HSP101 protein in rice. Northern ana...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1022324920316
更新日期:2003-03-01 00:00:00
abstract::Isolation of cDNAs encoding individual members of a gene family is essential for assessing their role in a biological phenomenon. However, this process is often laborious and slow due to highly conserved protein-coding region that interferes with the isolation of the individual members. Identification of gene-specific...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00042230
更新日期:1996-06-01 00:00:00
abstract::We have analyzed the nucleotide sequence and accumulation of an mRNA which is prevalent in seeds of Brassica napus L. During normal development, the mRNA begins to accumulate during late embryogeny, is stored in dry seeds, and becomes undetectable in seedlings within 24 hours after imbibition. Moreover, abscisic acid ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00017579
更新日期:1989-04-01 00:00:00
abstract::The ubiquitous grapevine-associated octopine/cucumopine Ti plasmids of biotype III Agrobacterium tumefaciens strains carry two T regions, TA and TB, with a complex oncogene arrangement. Within the octopine/cucumopine group, two main strain types were identified: 'large TA' strains with a TA region resembling the TL re...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00018558
更新日期:1990-02-01 00:00:00
abstract::Plants cope with pathogens with distinct mechanisms. One example is a gene-for-gene system, in which plants recognize the pathogen molecule by specified protein(s), this being called the R factor. However, mechanisms of interaction between proteins from the host and the pathogen are not completely understood. Here, we...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-005-5817-8
更新日期:2006-05-01 00:00:00
abstract::We have sequenced a plastid gene cluster from the unicellular red alga Cyanidium caldarium which is located downstream from the psbA gene and contains, in the following order, genes for a beta-allophycocyanin-like protein (apcB'), a putative 9.5 kDa allophycocyanin linker protein (apcL9.5) and a putative 29 kDa phycoc...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00014494
更新日期:1992-10-01 00:00:00
abstract::In order to optimise expression of a foreign protein in transgenic plants we investigated the potential benefits of including a viral untranslated leader sequence within a plant transformation vector. A variety of 5 leaders, including the tobacco mosaic virus (TMV) leader sequence and 31 nucleotides of the cauliflower...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00021423
更新日期:1993-10-01 00:00:00
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journal_title:Plant molecular biology
pub_type: 杂志文章,评审
doi:10.1023/a:1026597621646
更新日期:2000-11-01 00:00:00
abstract::In an attempt to identify domains directly involved in the signal transduction of phytochrome B (phyB), we over-expressed the achromophoric C-terminal half of phyB under control of the CaMV-35S promoter in transgenic Arabidopsis. In three independent transgenic lines, we detected accumulation of the introduced protein...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00040726
更新日期:1996-08-01 00:00:00
abstract::Transcription of plastid genes in higher plants is driven by two RNA polymerases. One is encoded in the chloroplast, the other is encoded in the nucleus. RNA synthesis in ribosome-deficient plastids is performed exclusively by the nuclear-encoded enzyme. In vitro capping was used to identify the transcriptional start ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1005924502336
更新日期:1998-02-01 00:00:00
abstract::The expression of beta-amylase genes in rice (Oryza sativa) and its regulation by phytohormones gibberellic acid (GA) and abscisic acid (ABA) were examined. Upon germination beta-amylase is synthesized de novo in aleurone cells and (GA) is not required. Exogenous addition of GA does not enhance the beta-amylase activi...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00040716
更新日期:1996-08-01 00:00:00
abstract::In this study, attempt has been made to produce a selected cultivar of tea with low-caffeine content using RNAi technology. The caffeine biosynthetic pathway in tea has been proposed to involve three N-methyltransferases such as xanthosine methyltransferase, 7-N-methylxanthine methyltransferase and 3, 7-dimethylxanthi...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-011-9785-x
更新日期:2011-08-01 00:00:00
abstract::Genes for histidyl-aspartyl (His-Asp) phosphorelay components (His-containing phosphotransfer proteins, HP, and response regulators, RR) were isolated from Zea mays L. to characterize their function in cytokinin signaling. Six type-A RRs (ZmRR1, ZmRR2, ZmRR4-ZmRR7), 3 type-B RRs (ZmRR8-ZmRR10), and 3 HPs (ZmHP1-ZmHP3)...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1023971315108
更新日期:2003-05-01 00:00:00
abstract::RNA silencing is a collective term that encompasses the sequence of events that leads to the targeted degradation of cellular mRNA and thus to the silencing of corresponding gene expression. RNA silencing is initiated after introduction into the host genome of a gene that is homologous to an endogenous gene. Transcrip...
journal_title:Plant molecular biology
pub_type: 杂志文章,评审
doi:10.1023/B:PLAN.0000028797.63168.a7
更新日期:2004-01-01 00:00:00
abstract::Tomato fruit maturation is accompanied by a depolymerization of cell wall pectins which is due to the action of endopolygalacturonase (endoPG) preceded by pectin methylesterase (PE) activity. To investigate the role of endoPG and PE in determining the structure of green bean (Phaseolus vulgaris L.) pectins, these pect...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00040831
更新日期:1996-09-01 00:00:00
abstract::Using a fruit-specific cDNA as a probe we isolated and sequenced the two corresponding homologous genes (Sn-1 and Sn-2) of the bell pepper (Capsicum annuum) genome. Both genes have a single intron and numerous unusual long inverted repeat sequences. The introns share 87% homology and Sn-2 contains one 450 bp additiona...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00032663
更新日期:1995-09-01 00:00:00
abstract::Deepwater rice can grow in the regions of Southeast Asia that are flooded during the monsoon season because it has several adaptations allowing it to survive under flooded conditions. One such adaptation is the ability for rapid internode elongation upon partial submergence to maintain its foliage above the rising flo...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/b:plan.0000009693.26740.c3
更新日期:1997-01-01 00:00:00
abstract::We investigated the effects of expressing a cDNA of cdc25, a mitotic inducer gene of Schizosaccharomyces pombe, on the development of transgenic tobacco plants (Nicotiana tabacum cv. Samsun). Nine independent primary transformants were regenerated containing the cdc25 sequence under the control of a cauliflower mosaic...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00019293
更新日期:1993-11-01 00:00:00
abstract::The cell cycle of eukaryotes is tightly regulated through the activity of cyclin-dependent kinases. The Arabidopsis thaliana CDKA;1 (CDC2aAt) gene is thought to encode such a protein kinase, since it is actively transcribed in proliferating tissues and can complement defects in the Schizosaccharomyces pombe cdc2 gene....
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1010665831955
更新日期:2001-05-01 00:00:00
abstract::Complementary DNA clones encoding acidic and basic isoforms of the class III chitinase were isolated from Nicotiana tabacum. The clones share ca. 65% identity, are equally homologous to the class III chitinases from cucumber and Arabidopsis, and are members of small gene families in tobacco. An acidic class III chitin...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00027070
更新日期:1992-08-01 00:00:00
abstract::DORNRÖSCHEN (DRN) and DORNRÖSCHEN-LIKE (DRNL) encode AP2-domain transcription factors, which act redundantly in cotyledon organogenesis. A more detailed genetic study now integrates DRN and DRNL into the CUP-SHAPED COTYLEDON (CUC) regulatory network and places DRN and DRNL differentially within the auxin signalling ne...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-010-9721-5
更新日期:2011-02-01 00:00:00
abstract::Because symbionts are experiencing major morphological changes during ectomycorrhiza development, the expression of genes encoding cytoskeletal proteins is likely altered. To test this contention, we have cloned and characterized in a alpha-tubulin cDNA (EgTubA1) from Eucalyptus globulus. A poorly-aggressive isolate (...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00019477
更新日期:1996-07-01 00:00:00
abstract::Alignment of transcripts and genome sequences yielded a set of alternatively spliced transcripts in four angiosperm genomes: three dicotyledon species Medicago truncatula (Medicago), Populus trichocarpa (poplar) and Arabidopsis thaliana (Arabidopsis), and the monocotyledon Oryzae sativa (rice). Intron retention was th...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-008-9334-4
更新日期:2008-07-01 00:00:00
abstract::Three polypeptides of 33 kD, 23 kD and 16 kD are released from maize photosystem II particles by alkaline Tris solution treatment and shown to cross-react with antisera to purified spinach oxygen-evolving (OE) polypeptides of 34 kD, 23 kD and 17 kD, respectively. They are not located exclusively in mesophyll cells but...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00166458
更新日期:1987-05-01 00:00:00
abstract::The pea lectin (Psl) gene encodes an abundant seed protein. Its seed-specific expression pattern is conserved in transgenic tobacco plants. Progressive 5' promoter deletions resulted in a gradual decrease of transcriptional activity in tobacco seed. A fragment of 115 bp still conferred seed-specific expression albeit ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00019103
更新日期:1996-11-01 00:00:00
abstract::The suppression of plant defence reactions plays a crucial role in causing plant diseases. In this report, we show that inducible plant defences are repressed during the development of Cercospora leaf spot disease. In the early phase of infection of sugar beet (Beta vulgaris L.) leaves with the phytopathogenic fungus ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-004-2141-7
更新日期:2004-08-01 00:00:00
abstract::Cassava mosaic disease (CMD) is a viral disease of the important tropical staple crop cassava (Manihot esculenta) and preferred management involves use of host-plant resistance. The best available resistance is controlled by a single dominant gene. Serial analysis of gene expression (SAGE) was used to analyze the gene...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-004-3477-8
更新日期:2004-11-01 00:00:00
abstract::Bacteroids of Rhizobium leguminosarum in root nodules of Pisum sativum are enclosed by a plant-derived peribacteriod membrane (PBM). The contents of the interstitial peribacteroid space (PBS) between bacteroid membrane and PBM were isolated by a controlled osmotic shock of PBM-enclosed bacteroids and analysed by two-d...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00015670
更新日期:1988-03-01 00:00:00