Abstract:
:Plastoglobules are lipid droplets present in all plastid types. In chloroplasts, they are connected to the thylakoid membrane by the outer lipid half-bilayer. The plastoglobule core is composed of neutral lipids most prominently the prenylquinones, triacylglycerols, fatty acid phytyl esters but likely also unknown compounds. During stress and various developmental stages such as senescence, plastoglobule size and number increase due to the accumulation of lipids. However, their role is not limited to lipid storage. Indeed, the characterization of the plastoglobule proteome revealed the presence of enzymes. Importantly it has been demonstrated that these participate in isoprenoid lipid metabolic pathways at the plastoglobule, notably in the metabolism of prenylquinones. Recently, the characterization of two phytyl ester synthases has established a firm metabolic link between PG enzymatic activity and thylakoid disassembly during chloroplast senescence and nitrogen starvation.
journal_name
Plantajournal_title
Plantaauthors
Besagni C,Kessler Fdoi
10.1007/s00425-012-1813-9subject
Has Abstractpub_date
2013-02-01 00:00:00pages
463-70issue
2eissn
0032-0935issn
1432-2048journal_volume
237pub_type
杂志文章,评审相关文献
PLANTA文献大全abstract::The beta-ketoacyl-acyl carrier protein synthase III (KAS III; EC 2.3.1.180) is a condensing enzyme catalyzing the initial step of fatty acid biosynthesis using acetyl-CoA as primer. To determine the mechanisms involved in the biosynthesis of fatty acids in sunflower (Helianthus annuus L.) developing seeds, a cDNA codi...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-010-1131-z
更新日期:2010-05-01 00:00:00
abstract:MAIN CONCLUSION:The aim of this study is to demonstrate the feasibility of down-regulating endogeneous prefoldin-2 root-knot nematode transcripts by expressing dsRNA with sequence identity to the nematode gene in tobacco roots under the influence of strong Arabidopsis ubiquitin (UBQ1) promoter. Root-knot nematodes (RKN...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-014-2211-2
更新日期:2015-03-01 00:00:00
abstract::Tubular evaginations of the plasmalemma of the scutellar epithelial cells of barley are described. The evaginations are similar to those present at other sites where solute flux occurs for a limited period only and wall development of the transfer-cell form has not occured. Differential uptake of the fluorescent dyes ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00393318
更新日期:1982-12-01 00:00:00
abstract::It is shown that simple, unbranched, plasmodesmata between young xylem ray cells of willow have no direct intercellular continuity apart from the plasmalemma which limits the cytoplasm and lines the plasmodesmatal canal. Each plasmodesma is traversed by a 200 Å diameter tubule (the desmotubule) which has a wall with p...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00398199
更新日期:1968-09-01 00:00:00
abstract::MAIN CONCLUSION : [EtPy][Br] is more reactive toward lignin than toward the PSs in wood cell walls, and [EtPy][Br] treatment results in inhomogenous changes to the cell wall's ultrastructural and chemical components. The effects of the ionic liquid 1-ethylpyridinium bromide ([EtPy][Br]), which prefers to react with li...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-014-2235-7
更新日期:2015-09-01 00:00:00
abstract::Gibberellic acid (GA3) enhances ultrastructural morphogenesis of plastids in greening cereals whilst abscisic acid (ABA) and CCC have the reverse effect over a shorter period. GA3 application counteracts the ABA and CCC inhibition of membrane development and, over longer periods of greening, the fastest rate of chloro...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00385553
更新日期:1973-12-01 00:00:00
abstract::It is concluded from (14)C labelling kinetics as well as from enzyme analysis that formation of malate and aspartate from glycerate-3P via carboxylation of P-enolpyruvate occurs in isolated photosynthesizing spinach (Spinacia oleracea L.) chloroplasts. Carbon incorporation into both dicarboxylic acids was about 1% of ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388873
更新日期:1975-01-01 00:00:00
abstract::A critical evolutionary step during rice domestication was the elimination of seed shattering. Wild rice disperses seeds freely at maturity to guarantee the propagation, while cultivated rice retains seeds on the straws to make easy harvest and decrease the loss of production. The molecular basis for this key event du...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-006-0460-4
更新日期:2007-06-01 00:00:00
abstract:MAIN CONCLUSION:The Taenia solium HP6/TSOL18 antigen was produced in carrot cells, yielding an immunogenic protein that induced significant protection in an experimental murine model against T. crassiceps cysticercosis when orally administered. This result supports the potential of HP6/TSOL18-carrot as a low-cost anti-...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-015-2431-0
更新日期:2016-03-01 00:00:00
abstract::Equisetaceae has been of research interest for decades, as it is one of the oldest living plant families, and also due to its high accumulation of silica up to 25% dry wt. Aspects of silica deposition, its association with other biomolecules, as well as the chemical composition of the outer strengthening tissue still ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-007-0671-3
更新日期:2008-04-01 00:00:00
abstract::The response of parsley seedlings (Petroselinum crispum) inoculated with zoospores of the soybean-pathogenic fungus, Phytophthora megasperma f. sp. glycinea, ranged from "immunity" to "physiological susceptibility" depending on the post-inoculation environmental conditions. Typical nonhost resistance reactions, hypers...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00403011
更新日期:1988-02-01 00:00:00
abstract::Polysomes in sieve elements of rice (Oryza sativa L.) were studied with the electron microscope. The polysomes were found on the rough endoplasmic reticulum (ER) present in immature sieve elements and also on the cisternae of aggregated ER in the parietal layer of mature, enucleate sieve elements. In the immature siev...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00390834
更新日期:1980-11-01 00:00:00
abstract::Cyanelles isolated from the alga Cyanophora paradoxa Korschikoff synthesized cyanelle proteins in vitro. This synthesis was stimulated by light and totally inhibited by chloramphenicol. Cycloheximide had only a small inhibitory effect. Electrophoretic separation of the labelled soluble cyanelle proteins yielded at lea...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00394488
更新日期:1988-01-01 00:00:00
abstract::The major storage proteins isolated from wild-type seeds of Arabidopsis thaliana (L.) Heynh., strain "Columbia", were studied by sucrose gradient centrifugation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Both the hypocotyl and cotyledons of mature embryos contained abundant 12 S (crucife...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00392124
更新日期:1986-11-01 00:00:00
abstract:MAIN CONCLUSION:Arabidopsis Mediator subunits 2, 14, 15a, 16, and 25 are required for papillae development on the trichome cell wall surface. Arabidopsis leaf hairs exhibit raised protrusions, termed papillae, on their cell wall surfaces. Here, we show that the glassy hair mutant, glh2, exhibits trichomes with an appro...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-018-3063-y
更新日期:2019-04-01 00:00:00
abstract::Haploid callus cultures of selected races of Lycopersicon (tomato) species can be obtained from anther culture. This is a further demonstration of a proposed general method of haploid culture developed with Arabidopsis thaliana. Differentiation of haploid callus of Lycopersicon esculentum can be controlled both in the...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00387721
更新日期:1972-06-01 00:00:00
abstract::Whether cell division is a driving force in plant morphogenesis has long been debated. In this review, the evidence for the existence of cell division-dependent and cell division-independent mechanisms of plant morphogenesis is discussed. The potential mechanisms themselves are then analysed, as is our understanding o...
journal_title:Planta
pub_type: 杂志文章,评审
doi:10.1007/s00425-002-0864-8
更新日期:2002-11-01 00:00:00
abstract::Seeds ofBromus sterilis L. germinated between 80-100% in darkness at 15° C but were inhibited by exposure to white or red light for 8 h per day. Exposure to far-red light resulted in germination similar to, or less than, that of seeds maintained in darkness. Germination is not permanently inhibited by light as seeds a...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF01607578
更新日期:1982-11-01 00:00:00
abstract::We have studied the movement and metabolism of oligogalacturonides through shoots of tomato (Lycopersicon esculentum L. cv Rutgers). Oligomers of polygalacturonic acid were prepared by enzyme digestion and gel filtration. These were end-reduced with [(3)H]NaBH4, using an improved reaction method, to yield oligoalditol...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00197050
更新日期:1992-11-01 00:00:00
abstract::The permeability of biological membranes to boric acid was investigated using the giant internodal cells of the charophyte alga Chara corallina (Klein ex Will. Esk. R.D. Wood). The advantage of this system is that it is possible to distinguish between membrane transport of boron (B) and complexing of B by plant cell w...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s004250000484
更新日期:2001-05-01 00:00:00
abstract::The soluble fraction of a cell-free system from immature seeds of Phaseolus vulgaris L. converts gibberellin A20 (GA20) to GA1 and GA5. It does however not metabolize GA1 and GA29 to GA5, showing that in this system GA20 is converted directly to GA5. The steps from GA20 to GA1 (3-hydroxylation) and from GA20 to GA5 (Δ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00410212
更新日期:1984-09-01 00:00:00
abstract::Biphenyls and dibenzofurans are the phytoalexins of the Maloideae, a subfamily of the economically important Rosaceae. The carbon skeleton of the two classes of antimicrobial secondary metabolites is formed by biphenyl synthase (BIS). A cDNA encoding this key enzyme was cloned from yeast-extract-treated cell cultures ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-006-0435-5
更新日期:2007-05-01 00:00:00
abstract::Seven endochitinases (EC 3.2.1.14) (relative molecular masses 23,000-28,000 and isoelectric points 10.3-10.4) were purified from nonembryogenic Citrus sinensis L. Osbeck cv. Valencia callus tissue. The basic chitinase/lysozyme from this tissue (BCLVC) exhibited lysozyme, chitinase and chitosanase activities and was de...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00200295
更新日期:1996-01-01 00:00:00
abstract::Air-grown cells of Porphyridium purpurem contain appreciable carbonic-anhydrase activity, comparable to that in air-grown Chlamydomonas reinhardtii, but activity is repressed in CO2-grown cells. Assay of carbonic-anhydrase activity in intact cells and cell extracts shows all activity to be intracellular in Porphyridiu...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00393867
更新日期:1987-12-01 00:00:00
abstract::The surface of plants is covered by cuticular wax, which contains a mixture of very long-chain fatty acid (VLCFA) derivatives. This wax surface provides a hydrophobic barrier which reduces non-stomatal water loss. One component of the cuticular wax is the alkyl esters, which typically contain a VLCFA esterified to an ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-007-0489-z
更新日期:2007-07-01 00:00:00
abstract::The development of an infection in soybean [Glycine max L. cultivar (cv.) Peking] roots by incompatible (I) and compatible (C) populations of soybean cyst nematode (SCN) (Heterodera glycines) was assayed using an AffymetriX soybean GeneChip. This time-course microarray analysis, using 37,744 probe sets, measured trans...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-007-0581-4
更新日期:2007-11-01 00:00:00
abstract::A 78-amino acid insertion (L78) is found in the low-affinity type (L-form) of starch phosphorylase (L-SP, EC 2.4.1.1). This insertion blocks the starch-binding site on the L-SP molecule, and it decreases the binding affinity of L-SP toward starch. The computational analysis of the amino acid sequence on L78 predicts s...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-005-0103-1
更新日期:2006-02-01 00:00:00
abstract::Sieve-tube plastids of Aristolochia (5 species investigated) contain several starch grains and always one large crystalloid. In Asarum (3 species investigated) starch has not been found in the sieve-tubes. Their plastids contain several cuneate crystalloids that are sometimes arranged around an invisible centre. Asaru...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388406
更新日期:1971-03-01 00:00:00
abstract:MAIN CONCLUSION:Atmospheric p CO 2 impacts Quercus petraea biomass production and cell wall composition of the leaves in favor of cellulose at the expense of lignin, and enhances foliar non-structural carbohydrate levels and sucrose contents in a pCO 2 concentration-dependent manner. Sessile oak (Quercus petraea Liebl....
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-018-3016-5
更新日期:2019-02-01 00:00:00
abstract::Gibberellin (GA) biosynthesis in cell-free systems from Cucurbita maxima L. endosperm was reinvestigated using incubation conditions different from those employed in previous work. The metabolism of GA12 yielded GA13, GA43 and 12α-hydroxyGA43 as major products, GA4, GA37, GA39, GA46 and four unidentified compounds as ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00194430
更新日期:1993-03-01 00:00:00