Abstract:
:Pyruvate orthophosphate dikinase (PPDK) is a critical enzyme for C(4) photosynthesis, providing the primary acceptor for fixation of bicarbonate in mesophyll cells. Although first isolated in C(4) plants, it is also present in C(3) species. We report that the single gene encoding PPDK in Arabidopsis thaliana possesses two promoters, giving rise to two types of transcript. The longer transcript is generated from a promoter upstream of the first exon, while the shorter transcript is derived from a promoter found within the first intron of the longer form. Apart from 5' untranslated regions, the presence of the first exon, and three missing codons at the start of the second exon in the longer form, the transcripts are identical. Fusions between the two forms of transcript and gfp showed that the longer transcript encodes a protein targeted to the chloroplast, that its first exon acts as a transit peptide, and that the smaller protein is cytosolic. Abundance of the shorter transcript, responsible for producing the cytosolic protein increases rapidly and specifically during extended dark and dark-induced senescence. Transcripts for both chloroplastic and cytosolic proteins were detectable in cotyledons, while in cauline leaves the transcript encoding the chloroplastic protein was most abundant. We propose that in cotyledons PPDK may be important in supplying PEP to gluconeogenesis, and in ageing leaves it allows remobilisation of nitrogen to supply reproductive tissue.
journal_name
Plant Mol Bioljournal_title
Plant molecular biologyauthors
Parsley K,Hibberd JMdoi
10.1007/s11103-006-9023-0subject
Has Abstractpub_date
2006-10-01 00:00:00pages
339-49issue
3eissn
0167-4412issn
1573-5028journal_volume
62pub_type
杂志文章abstract::In previous work, a 33 kDa cysteine proteinase was found in callus initiated from maize (Zea mays L.) resistant to fall armyworm feeding. A callus cDNA library from the maize inbred Mp708 was screened with oligonucleotides derived from the N-terminal amino acid sequence of the 33 kDa proteinase and several cDNA clones...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1026494813936
更新日期:1999-05-01 00:00:00
abstract::Unilateral incompatibility often occurs between self-incompatible (SI) species and their self-compatible (SC) relatives. For example, SI Nicotiana alata rejects pollen from SC N. plumbaginifolia, but the reciprocal pollination is compatible. This interspecific pollen rejection system closely resembles intraspecific S-...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1005904230755
更新日期:1998-03-01 00:00:00
abstract:KEY MESSAGE:Arabidopsis chloroplast RNase J displaces both exo- and endo-ribonucleolytic activities and contains a unique GT-1 DNA binding domain. Control of chloroplast gene expression is predominantly at the post-transcriptional level via the coordinated action of nuclear encoded ribonucleases and RNA-binding protein...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-018-0799-5
更新日期:2019-01-01 00:00:00
abstract::The regulation of genes in response to wounding is mediated in part by the octadecanoids 12-oxo-phytodienoic acid (OPDA), jasmonic acid (JA) and its methyl ester methyl jasmonate (MeJA). We identified, by differential display, an Arabidopsis gene (OPR3) induced after wounding. OPR3 is homologous to members of the flav...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1006464822434
更新日期:2000-09-01 00:00:00
abstract::We have characterized two sets of cDNA clones representing the glutamine synthetase (GS) mRNA in soybean nodules. Using the 3'-untranslated regions of a representative member of each set, as gene member(s) specific probes, we have shown that one set of the GS genes are expressed in a nodule-specific manner, while the ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00028970
更新日期:1993-09-01 00:00:00
abstract::A method is described for the high frequency transformation of carrot proembryogenic suspension culture cells by a non-oncogenic Ti-plasmid vector (pGV3850::1103) which carried a chimaeric kanamycin resistance gene (nos-NPT-II). Plants were regenerated efficiently from transformed material by somatic embryogenesis in ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00015034
更新日期:1987-05-01 00:00:00
abstract::R2R3-MYB genes play a pivotal role in regulating anthocyanin accumulation. Here, we report two tandemly duplicated R2R3-MYB genes in peach, PpMYB10.1 and PpMYB10.2, with the latter showing lower ability to induce anthocyanin accumulation than the former. Site-directed mutation assay revealed two amino acid changes in ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-018-0773-2
更新日期:2018-09-01 00:00:00
abstract:KEY MESSAGE:We developed a machine learning-based model to identify the hidden labels of m6A candidates from noisy m6A-seq data. Peak-calling approaches, such as MeRIP-seq or m6A-seq, are commonly used to map m6A modifications. However, these technologies can only map m6A sites with 100-200 nt resolution and cannot rev...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-019-00930-x
更新日期:2019-12-01 00:00:00
abstract::Homologous recombination is an essential process for the maintenance and variability of the genome. In eukaryotes, the Rad52 epistasis group proteins serve the main role for meiotic recombination and/or homologous recombinational repair. Rad51-like proteins, such as Rad55 and Rad57 in yeast, play a role in assembly or...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1016047231597
更新日期:2002-09-01 00:00:00
abstract::The transcript level and in turn protein density of the K(+)-uptake channel ZMK1 in maize (Zea mays) coleoptiles is controlled by the phytohormone auxin. ZMK1 is involved in auxin-regulated coleoptile elongation as well as gravi- and phototropism. To provide unequivocal evidence for the role of ZMK1 in these elementar...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-006-0047-2
更新日期:2006-07-01 00:00:00
abstract::The bZIP transcription factor (TF) family plays an important role in the abscisic acid (ABA) signaling pathway of abiotic stress in plants. We here report the cloning and characterization of OsbZIP71, which encodes a rice bZIP TF. Functional analysis showed that OsbZIP71 is a nuclear-localized protein that specificall...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-013-0115-3
更新日期:2014-01-01 00:00:00
abstract::Rice genetic resources, comprising landrace varieties, modern and obsolete varieties, genetic stocks, breeding lines, and the wild rices, are the basis of world food security. The International Rice Genebank at the International Rice Research Institute in the Philippines conserves the largest and most diverse collecti...
journal_title:Plant molecular biology
pub_type: 杂志文章,评审
doi:
更新日期:1997-09-01 00:00:00
abstract::A 7.4 kb segment of a Euglena nuclear gene encoding a portion of the polyprotein precursor to the light-harvesting chlorophyll a/b-binding protein of photosystem II (LHCPII) has been isolated and sequenced. Nine exons can be assembled into a continuous open reading frame encoding 113 amino acids of the C-terminus of a...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00034956
更新日期:1992-01-01 00:00:00
abstract::Polyphenol oxidases (PPOs) catalyze the oxidation of ortho-diphenols to the corresponding quinones (EC 1.10.3.1). In plants PPOs appear in gene families, and the corresponding isoenzymes are located to the thylakoid lumen of chloroplasts. Although plant PPOs are often discussed with regard to their role in defense rea...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-012-9943-9
更新日期:2012-09-01 00:00:00
abstract::RbcL and rbcS mRNA levels and plastid transcription activity are low in the basal meristematic region of barley primary leaves and increase coordinately during leaf cell development with a similar time course in dark-grown or illuminated seedlings. The capacity of light to cause cab mRNA accumulation shows a similar d...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00037063
更新日期:1991-10-01 00:00:00
abstract::Most plant cells retain the capacity to differentiate into all the other cell and organ types that constitute a plant. However, genome-wide transcriptional activities underlying the process of cell differentiation are poorly understood, especially in monocot plants. Here we used a rice (Oryza sativa) cell culture syst...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-006-9092-0
更新日期:2007-02-01 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 yeast and mammals, prohibitins (PHBs) are considered as structural proteins that form a scaffold-like structure for interacting with a set of proteins involved in various processes occurring in the mitochondria. The role of PHB in plant mitochondria is poorly understood. In the study, the model organism Arabidopsis...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-015-0320-3
更新日期:2015-06-01 00:00:00
abstract::A leaf undergoes determinate growth from a primordium on flank of the shoot apical meristem. Several intrinsic pathways restrict meristematic activity in the leaf of Arabidopsis; however, other factors remain to be defined. We report here that the overexpression of MINI ZINC FINGER1 (MIF1) or MIF3 disrupted the leaf d...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-011-9768-y
更新日期:2011-05-01 00:00:00
abstract::Golgins are a family of coiled-coil proteins that are associated with the Golgi apparatus. They are necessary for tethering events in membrane fusion and may act as structural support for Golgi cisternae. Here we report on the identification of an Arabidopsis golgin which is a homologue of CASP, a known transmembrane ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-005-4618-4
更新日期:2005-05-01 00:00:00
abstract::RNA editing is one of the post-transcriptional processes that commonly occur in plant plastids and mitochondria. In Arabidopsis, 34 C-to-U RNA editing events, affecting transcripts of 18 plastid genes, have been identified. Here, we examined the editing and expression of these transcripts in different organs, and in g...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-013-0069-5
更新日期:2013-07-01 00:00:00
abstract::Plants respond to phosphate (Pi) deficiency through adaptive mechanisms involving several morphological, biochemical and molecular changes. In this study, we have characterized the structure and expression of a tomato (Lycopersicon esculentum L.) phosphate starvation-induced gene (TPSI1). A 3.5 kb genomic fragment con...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1005729309569
更新日期:1997-03-01 00:00:00
abstract::StCDPK1 is a calcium dependent protein kinase expressed in tuberizing potato stolons and in sprouting tubers. StCDPK1 genomic sequence contains eight exons and seven introns, the gene structure is similar to Arabidopsis, rice and wheat CDPKs belonging to subgroup IIa. There is one copy of the gene per genome and it is...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-009-9462-5
更新日期:2009-05-01 00:00:00
abstract::GRAS proteins belong to a plant-specific transcription factor family. Currently, 33 GRAS members including a putative expressed pseudogene have been identified in the Arabidopsis genome. With a reverse genetic approach, we have constructed a "phenome-ready unimutant collection" of the GRAS genes in Arabidopsis thalian...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/s11103-008-9345-1
更新日期:2008-08-01 00:00:00
abstract::One hundred maize zygotic embryos microdissected at the transition stage were used to construct a cDNA library after non-selective PCR (NS-PCR) amplification of whole cDNA populations. The library contains 2.3 x 10(5) recombinants and two different calmodulin cDNAs were cloned using a heterologous probe from petunia. ...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00019182
更新日期:1995-01-01 00:00:00
abstract::Transgenic plants carrying chimeric genes composed of segments of the 5'-flanking region of the Arabidopsis 9-tubulin gene (TUB9) fused to the coding region of the beta-glucuronidase (GUS) gene of Escherichia coli were used to investigate the temporal and spatial patterns of TUB9 expression. Chimeric genes that contai...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1011628024798
更新日期:2001-10-01 00:00:00
abstract::The promoter region (-309 to +44) of the Brassica napus storage protein gene napA was studied in transgenic tobacco by successive 5' as well as internal deletions fused to the reporter gene GUS (beta-glucuronidase). The expression in the two main tissues of the seed, the endosperm and the embryo, was shown to be diffe...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00041385
更新日期:1996-12-01 00:00:00
abstract::Ethylene promotes the abscission of leaves and the ripening of fruits in pepper plants, and in both events an increase in cellulase activity is observed. However, two enzyme isoforms (pI 7.2 and 8.5, respectively) are differentially involved in the two physiological phenomena. The pI 8.5 form has been purified from ri...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00041164
更新日期:1995-11-01 00:00:00
abstract::The High Mobility Group (HMG) proteins of vertebrate animals have been the subject of intensive study because of evidence that they may be structural proteins of transcriptionally active chromatin. Organisms other than vertebrate animals have chromatin proteins which meet the operational criteria of salt extractabilit...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1007/BF00015875
更新日期:1987-09-01 00:00:00
abstract::Gene expression for nuclear- and mitochondrial-encoded subunits of respiratory chain components was measured in developing soybean cotyledons and compared to the abundance of the relevant proteins. Overall respiratory gene expression peaked at day 16, close to the peak in cytochrome chain and TCA cycle activities from...
journal_title:Plant molecular biology
pub_type: 杂志文章
doi:10.1023/a:1022502501373
更新日期:2003-03-01 00:00:00