Urea as sole source of nitrogen for plant growth : II. Urease and the metabolism of urea in Spirodela oligorrhiza.

abstract：:Nitrate and nitrite reductases were both induced by adding three concentrations of nitrate to the nutrient supply of nitrate-starved barley seedlings. Enzyme induction was not proportional to the amount of nitrate introduced. Glutamine synthetase also increased above a high endogenous activity but the increase did not...

journal_title：Planta

authors： Barneix AJ,James DM,Watson EF,Hewitt EJ

更新日期：1984-11-01 00:00:00

abstract：:Phloem exudates from Cucurbita, Cucumis, and Citrullus were gelled by oxidative formation of disulphide bridges between the phloem filaments. Gellation could be inhibited by dithiothreitol or iodoacetamide and did not require the presence of the phloem lectin. Each exudate contained a dimeric lectin of similar relativ...

journal_title：Planta

authors： Read SM,Northcote DH

更新日期：1983-06-01 00:00:00

abstract：MAIN CONCLUSION:74 phytocyanin genes were identified in the Populus trichocarpa genome. Phylogenetic analysis grouped the PC proteins into four subfamilies (UCs, PLCs, SCs, and ENODLs). Closely related PC proteins share similar motifs, implying similar functions. Expression profiles of PtPC genes were analyzed in respo...

journal_title：Planta

authors： Luo S,Hu W,Wang Y,Liu B,Yan H,Xiang Y

更新日期：2018-05-01 00:00:00

abstract：:As an extension of earlier cytophysiological and morphological studies on differentiating cells of Micrasterias denticulata, a fine structural investigation of glutaraldehyde-osmium tetroxide fixed material has been made. Special emphasis has been placed on the distribution of cytoplasmic microtubules and on their pos...

journal_title：Planta

authors： Kiermayer O

更新日期：1968-09-01 00:00:00

abstract：:In cells of Zea mays (root hairs, coleoptiles) and Riccia fluitans (rhizoids, thalli) intracellular Ca(2+) and pH have been measured with double-barrelled microelectrodes. Free Ca(2+) activities of 109-187 nM (Riccia rhizoids), 94-160 nM (Riccia thalli), 145-231 nM (Zea root hairs), 84-143 nM (Zea coleoptiles) were fo...

journal_title：Planta

authors： Felle H

更新日期：1988-11-01 00:00:00

abstract：:The movement of (14)C from indole-3-acetic acid (IAA) (14)C has been examined in 5 mm root segments of dark-grown seedlings of Helianthus annuus and Brassica oleracea. Contaminants from distilled water, phosphate buffer and the razor-blade cutter increase the decarboxylation of IAA-(14)C, and cutting of root segments ...

journal_title：Planta

authors： Iversen TH,Aasheim T

更新日期：1970-12-01 00:00:00

abstract：:Taking into account the literature on the so-called sieve-tube slime ("mictoplasm", "slime strands") and regarding its fine structure more in detail the term plasmatic filament ("Plasmafilament") is proposed and will be used in this paper to characterize the individual exceedingly fine subunit of the plasmatic network...

journal_title：Planta

authors： Behnke HD,Dörr I

更新日期：1967-03-01 00:00:00

abstract：:Vascular bundles of petioles below wilted leaves of Nymphoides peltata (S.G. Gmel. O. Kuntze) were frozen intact and freeze-fractured for electron microscopy. Cell walls in them appeared drawn in against the helical thickenings of xylem vessels. By contrast, walls round vessels which had been frozen in vascular bundle...

journal_title：Planta

authors： Johnson RP

更新日期：1977-01-01 00:00:00

abstract：:When fed with [(14)C] phenylalanine in the light, xylem tissues isolated from poplar stems were able to incorporate part of the radioactivity into both the guaiacyl and the syringyl residues of lignins. In the dark, only syringyl units were integrated into the polymer whereas the guaiacyl residues remained unlabeled.W...

journal_title：Planta

authors： Grand C,Ranjeva R,Boudet AM,Alibert G

更新日期：1979-01-01 00:00:00

abstract：:Water deficits consistently promote higher concentrations of anthocyanins in red winegrapes and their wines. However, controversy remains as to whether there is any direct effect on berry metabolism other than inhibition of growth. Early (ED) and late (LD) season water deficits, applied before or after the onset of ri...

journal_title：Planta

authors： Castellarin SD,Matthews MA,Di Gaspero G,Gambetta GA

更新日期：2007-12-01 00:00:00

abstract：:The lemma and palea (lemma/palea), which form the husk of barley (Hordeum vulgare L.) seeds, constitutively express high levels of defense-related genes, relative to leaves [Abebe et al. (2004) Crop Sci 44:942-950]. One of these genes, Lem2, is expressed mainly in the lemma/palea and coleoptile and is strongly upregul...

journal_title：Planta

authors： Abebe T,Skadsen RW,Kaeppler HF

更新日期：2005-05-01 00:00:00

abstract：:Gravitropic plant growth is due to gravistimulated asymmetric extension rates of the affected flanks of the graviresponding organ. Differential growth of the upper and lower flanks (UFs, LFs) of graviresponding plant organs may in principle be achieved by various biochemical and/or biophysical asymmetries. The gravist...

journal_title：Planta

authors： Edelmann HG

更新日期：1997-09-01 00:00:00

abstract：MAIN CONCLUSION:Infection by apple latent spherical virus (ALSV) vectors that promote the expression of Arabidopsis thaliana FLOWERING LOCUS T ( AtFT ) or Gentiana triflora GtFT s accelerates flowering in gentian and lisianthus plants. Apple latent spherical virus (ALSV) has isometric virus particles (25 nm in diameter...

journal_title：Planta

authors： Fekih R,Yamagishi N,Yoshikawa N

更新日期：2016-07-01 00:00:00

abstract：:Changes in the rotational motion of paramagnetic and fluorescent lipid-soluble probes were used to assess the effects of putrescine, spermidine and spermine on the fluidity of microsomal membranes from primary leaves of bean (Phaseolus vulgaris L.). Surface probes were more strongly immobilized by physiological concen...

journal_title：Planta

authors： Roberts DR,Dumbroff EB,Thompson JE

更新日期：1986-03-01 00:00:00

abstract：MAIN CONCLUSION:Loss of function mutation of rice OsACOS12 impairs lipid metabolism-mediated anther cuticle and pollen wall formation, and interferes with tapetum programmed cell death, leading to male sterility. Acyl-CoA Synthetase (ACOS) is one of the enzymes activating fatty acids for various metabolic functions in ...

journal_title：Planta

authors： Yang X,Liang W,Chen M,Zhang D,Zhao X,Shi J

更新日期：2017-07-01 00:00:00

abstract：:We studied changes induced by cold on electron transfer pathways (linked to NADH or NADPH oxidation) in endoplasmic reticulum of rapeseed hypocotyls (Brassica napus L.) from a freezing-sensitive variety (ISL) and freezing-tolerant variety (Tradition). Plantlets were grown at 22 degrees C then submitted to a cold shock...

journal_title：Planta

authors： de Virville JD,Cochet F,Tasseva G,Moreau F,Zachowski A

更新日期：2008-10-01 00:00:00

abstract：:Pale and green leaves of Kalanchoe fedtschenkoi var. variegata were inoculated with Agrobacterium tumefaciens. Six weeks later the chlorophyll contents of the leaves and their tumors were investigated. The tumor tissues possess very similar concentrations of chlorophylls and a low number of chloroplasts per cell. Ther...

journal_title：Planta

authors： Beiderbeck R,Nitsche H

更新日期：1970-03-01 00:00:00

abstract：:Movement of IAA was studied in excised coleoptile apices and whole seedlings of Zea mays L. and Avena sativa L. during geotropic stimulation. A micropipette technique permitted the application of [5-(3)H]IAA at predetermined points on the coleoptiles with minimal tissue damage.When [5-(3)H]IAA was applied to the upper...

journal_title：Planta

authors： Shaw S,Gardner G,Wilkins MB

更新日期：1973-06-01 00:00:00

abstract：:P34(cdc2) is a key cell-cycle protein in fission yeast that is necessary for progress in the cell cycle from the G1 to the S phase and from G2 through mitosis. Homologues of p34(cdc2) have been found in all eukaryotes that have been investigated. Levels of p34(cdc2)-like protein were studied by quantitative Western bl...

journal_title：Planta

authors： Gorst JR,John PC,Sek FJ

更新日期：1991-10-01 00:00:00

abstract：:Tea seed is believed to be recalcitrant based on its sensitivity to chilling or drying stress. Reactive oxygen species (ROS) and alterations in cytosolic redox status have been implicated in intolerance to desiccation by recalcitrant seed, but there is little information available regarding how ROS are regulated in se...

journal_title：Planta

authors： Chen Q,Yang L,Ahmad P,Wan X,Hu X

更新日期：2011-03-01 00:00:00

abstract：:Three methods of estimating photorespiratory rate in leaves of the C3-C4 intermediate species Moricandia arvensis and the related C3 species Moricandia moricandioides were compared. The results indicated that the photorespiratory rate in M. arvensis is less than in M. moricandioides, and that this is caused partly by ...

journal_title：Planta

authors： Hunt S,Smith AM,Woolhouse HW

更新日期：1987-06-01 00:00:00

abstract：:The glucosinolate composition and content in various tissues of Arabidopsis thaliana (L.) Heynh. ecotype Columbia during development from seeds to bolting plants were determined in detail by high-performance liquid chromatography. Comparison of the glucosinolate profiles of leaves, roots and stems from mature plants w...

journal_title：Planta

authors： Petersen BL,Chen S,Hansen CH,Olsen CE,Halkier BA

更新日期：2002-02-01 00:00:00

abstract：:2-(Chloroethyl)phosphonic acid (CEPA) inhibited the rise in tannin production and phenylalanine ammonia-lyase EC 4.1.1.5 (PAL) activity shown by Acer cells in media containing 9.0×10(-7) M 2,4-D for a period of 2-3 days after its addtion. ...

journal_title：Planta

authors： Westcott RJ

更新日期：1976-01-01 00:00:00

abstract：:Active Cl(-) uptake by Chlorella fusca was examined by using (36)Cl as a label. Under light/air conditions chloride influx from a 2.4·10(-5) M solution was 4.0±0.04 nmol m(-2)s(-1). After 70±10 min a stationary 380±40 fold accumulation was reached. In dark/air and dark/argon influx and accumulation were reduced to 25±...

journal_title：Planta

authors： Doblinger R,Tromballa HW

更新日期：1982-11-01 00:00:00

abstract：:During sunflower (Helianthus annuus L.) seed formation there was an active period of lipid biosynthesis between 12 and 28 days after flowering (DAF). The maximum in-vitro acyl-acyl carrier protein (ACP) thioesterase activities (EC 3.1.2.14) were found at 15 DAF, preceding the largest accumulation of lipid in the seed....

journal_title：Planta

authors： Martínez-Force E,Cantisán S,Serrano-Vega MJ,Garcés R

更新日期：2000-10-01 00:00:00

abstract：:Germination and seedling establishment follows a distinct pattern which is partly controlled by hormones. Roots have high levels of cytokinins. By quantifying the fluctuations in endogenous cytokinins over time, further insight may be gained into the role of cytokinins during germination and seedling establishment. Ra...

journal_title：Planta

authors： Stirk WA,Novák O,Václavíková K,Tarkowski P,Strnad M,van Staden J

更新日期：2008-05-01 00:00:00

abstract：:The high photosynthetic activity (O2 production and CO2 consumption) ofAcetabularia mediterranea Lamour. (=A. acetabulum (L.) Silva) characteristic of cells cultured in white light decreases slowly when cells are kept in continuous red light, and is less than 20% of the original activity after three weeks. Subsequent ...

journal_title：Planta

authors： Schmid R,Wennicke R,Fleischhauer S

更新日期：1990-10-01 00:00:00

abstract：:Changes in gene expression related to ethylene synthesis were investigated during ripening of tomato fruit, and in unripe fruit and leaves after wounding. Messenger RNA was extracted at different stages of ripening, or at various times after wounding, and translated in vitro. A number of changes in mRNA were noted in ...

journal_title：Planta

authors： Smith CJ,Slater A,Grierson D

更新日期：1986-05-01 00:00:00

abstract：:Ectomycorrhizal associations are of major ecological importance in temperate and boreal forests. The development of a functional ectomycorrhiza requires many genetic and biochemical changes. In this study, suppressive subtraction hybridization was used to identify differentially expressed genes in the roots of maritim...

journal_title：Planta

authors： Flores-Monterroso A,Canales J,de la Torre F,Ávila C,Cánovas FM

更新日期：2013-06-01 00:00:00

abstract：:The occurrence and amount of soluble and insoluble phenolics in mycorrhizal and non-mycorrhizal roots of Picea abies (L.) Karst, were investigated, p-Hydroxybenzoic acid glucoside, picein, piceatannol and its glucoside, isorhapontin, catechin and ferulic acid could be identified by high-performance liquid chromatograp...

journal_title：Planta

authors： Münzenberger B,Heilemann J,Strack D,Kottke I,Oberwinkler F

更新日期：1990-08-01 00:00:00