Assessment of nutrient remobilization through structural changes of palisade and spongy parenchyma in oilseed rape leaves during senescence.

abstract：:1. It has been shown that the percentage germination of seed in contact with an aqueous solution depends (a) on the extent of differential permeability of the seed coat to the solute and (b) on whether the solute is toxic. 2. In investigations with "Meteor" pea seeds, polyethylene glycols of nominal molecular weights ...

journal_title：Planta

authors： Manohar MS

更新日期：1966-03-01 00:00:00

abstract：:Water and solute relations of excised seminal roots of young maize (Zea mays L) plants, have been measured using the root pressure probe. Upon addition of osmotic solutes to the root medium, biphasic root pressure relaxations were obtained as theoretically expected. The relaxations yielded the hydraulic conductivity L...

journal_title：Planta

authors： Steudle E,Frensch J

更新日期：1989-03-01 00:00:00

abstract：:Polymerase chain reaction (PCR) was used to amplify transcripts encoding cytochrome b5 from cDNA synthesised from RNA isolated from developing seeds of tobacco (Nicotiana tabacum L.). The sequence of the amplified products indicated that the clones encoded a second form of tobacco cytochrome b5, different from that pr...

journal_title：Planta

authors： Napier JA,Smith MA,Stobart AK,Shewry PR

更新日期：1995-01-01 00:00:00

abstract：:Action spectra for chromatic adaptation in Fremyella diplosiphon Drouet have been determined using techniques previously described. Action maxima are at 540 nm, with a half-band width of 80 nm, for induction of phycoerythrin synthesis (green action) and at 650 nm, with a half-band width of 90 nm, for reversal of induc...

journal_title：Planta

authors： Vogelmann TC,Scheibe J

更新日期：1978-01-01 00:00:00

abstract：:Callose synthesis occurs at specific stages of plant cell wall development in all cell types, and in response to pathogen attack, wounding and physiological stresses. We determined the expression pattern of "upstream regulatory sequence" of 12 Arabidopsis callose synthase genes (CalS1-12) genes and demonstrated that d...

journal_title：Planta

authors： Dong X,Hong Z,Chatterjee J,Kim S,Verma DP

更新日期：2008-12-01 00:00:00

abstract：:Kinetin induces an increase in the caffeine content of Coffea leaves of up to 40% of the normal level. The effect is most pronounced in young leaves; it is, however, transient. After six days in old leaves and after 12 days in young leaves, the caffeine content has decreased to its normal level.The results are discuss...

journal_title：Planta

authors： Wanner H,Hagemann P

更新日期：1969-03-01 00:00:00

abstract：:A pine asparagine synthetase gene expressed in developing seedlings has been identified by cloning its cDNA (PsAS1) from Scots pine (Pinus sylvestris L.). Genomic DNA analysis with PsAS1 probes and a sequence-based phylogenetic tree are consistent with the possibility of more than one gene encoding asparagine syntheta...

journal_title：Planta

authors： Cañas RA,de la Torre F,Cánovas FM,Cantón FR

更新日期：2006-06-01 00:00:00

abstract：:The first hours of seed germination are characterized by an increase in the rate of RNA synthesis. Although this change is most easily accounted for by changes in the ribonucleotide pool sizes, we investigated two other aspects of rRNA synthesis which are likely to contribute to the phenomenon. Using isolated radish e...

journal_title：Planta

authors： Aspart L,Cooke R,Michaux-Ferriere N,Delseny M

更新日期：1980-02-01 00:00:00

abstract：:The actin cytoskeleton is a key player in defense responses during early stages of infection by fungal pathogens. To investigate molecular mechanisms of actin-related defense responses, a cultured tobacco ( Nicotiana tabacum L.) BY-2 cell system was devised. When conidia were directly deposited on BY-2 cells, neither ...

journal_title：Planta

authors： Kobayashi I,Hakuno H

更新日期：2003-06-01 00:00:00

abstract：:When (3)H-(14)C-acetate was supplied to Chlorella pyrenoidosa in the light, glycollic acid became rapidly labelled with tritium and (14)C. The [Formula: see text]ratio of glycollate was 10, whilst the ratio was 4 in the acetate added. Both (3)H and (14)C from acetate were present in glycollate before they were present...

journal_title：Planta

authors： Merrett MJ,Goulding KH

更新日期：1967-09-01 00:00:00

abstract：:Light causes growth of dicotyledonous leaves by stimulating proton efflux, cell wall acidification and loosening, and solute accumulation for turgor maintenance. For cells still undergoing cell division at the base of expanding tobacco ( Nicotiana tabacum L. cv. Xanthi) leaves, light-stimulated growth depends on K+ up...

journal_title：Planta

authors： Stiles KA,McClintick A,Van Volkenburgh E

更新日期：2003-08-01 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

authors： Lange T,Hedden P,Graebe JE

更新日期：1993-03-01 00:00:00

abstract：:Acropetal movement of [2-(14)C] abscisic acid (ABA) in long root segments of P. coccineus is drastically reduced by destruction of the tissue, low temperature, anaerobic conditions and pretreatment with CCCP (carbonyl-cyanide-m-chloro-phenylhydrazone) at uncoupling concentrations. Basipetal transport is not affected b...

journal_title：Planta

authors： Hartung W

更新日期：1975-01-01 00:00:00

abstract：:The differential expression of PSII genes was investigated in mesophyll and bundle-sheath cells of Flaveria trinervia, a dicotyledonous C4 plant of the NADP-malic enzyme type. A comprehensive immunoblot analysis showed that three extrinsic proteins of the water-splitting complex (10, 16 and 23 kDa) are selectively dep...

journal_title：Planta

authors： Höfer MU,Santore UJ,Westhoff P

更新日期：1992-01-01 00:00:00

abstract：:The effects of O2, growth-regulators and desiccation on callus growth and somatic embryo (embryoid) development were investigated in cultures of immature embryos of two lines of Triticum aestivum L. Callus and embryoid formation were induced on media that contained N(6)-furfurylamin-opurine (kinetin) and either 2,4-di...

journal_title：Planta

authors： Carman JG

更新日期：1988-09-01 00:00:00

abstract：:The occurrence and distribution of a multifunctional chaperonin-60 (cpn60), the GroEL protein, was demonstrated in the cyanobacterium Anabaena PCC 7120 by using a rabbit anti-GroEL (Escherichia coli) antibody. Western-blot analysis showed a distinct cross-reaction with a protein of approx. 65 kilodaltons, analogous to...

journal_title：Planta

authors： Jāger KM,Bergman B

更新日期：1991-12-01 00:00:00

abstract：:Cocoyam (Xanthosoma sagittifolium) is an important tuber crop in most tropical zones of Africa and America. In Cameroon, its cultivation is hampered by a soil-borne fungus Pythium myriotylum which is responsible for root rot disease. The mechanism of root colonisation by the fungus has yet to be elucidated. In this st...

journal_title：Planta

authors： Boudjeko T,Andème-Onzighi C,Vicré M,Balangé AP,Ndoumou DO,Driouich A

更新日期：2006-01-01 00:00:00

abstract：:1. At relatively low concentrations, UdR generally enhances the inhibition caused by 5-BUdR. When the concentration of UdR is progressively increased, an inversion of the effects of UdR is observed; this inversion may go as far as complete reversal of the inhibition caused by 5-BUdR in the case of hypocotyl growth. 2....

journal_title：Planta

authors： Gullot A

更新日期：1971-06-01 00:00:00

abstract：:Morphogenesis and differentiation of the young gametophytes (=sporelings) of Dryopteris filix-mas are controlled by light. Blue light leads to the formation of "normal" two-dimensional prothallia; under red light, however, the gametophytes grow as cellular filaments. Morphogenesis in blue light is connected with an in...

journal_title：Planta

authors： Bergfeld R

更新日期：1968-09-01 00:00:00

abstract：:Thermogenesis during the blooming of inflorescence is found in several but not all aroids. To understand what is critical for thermogenesis, we investigated the difference between thermogenic and non-thermogenic skunk cabbages (Symplocarpus renifolius and Lysichiton camtschatcensis), which are closely related in morph...

journal_title：Planta

authors： Ito-Inaba Y,Hida Y,Inaba T

更新日期：2009-12-01 00:00:00

abstract：:The presence of a newly formed primary cell wall was shown to be required for attachment and subsequent transformation of tobacco leaf protoplasts by Agrobacterium tumefaciens in cocultivation experiments. In these experiments both protoplasts at different stages after their isolation and cell-wall inhibitors were use...

journal_title：Planta

authors： Krens FA,Molendijk L,Wullems GJ,Schilperoort RA

更新日期：1985-11-01 00:00:00

abstract：:The infection of cucumber leaves by Colletotrichum lagenarium was studied using cytological methods. Its progress in untreated plants was compared with that in plants in which systemic resistance had been induced by pre-infecting the first true leaf with the same fungus. In induced plants, a reduction of fungal develo...

journal_title：Planta

authors： Kováts K,Binder A,Hohl HR

更新日期：1991-03-01 00:00:00

abstract：:Mechanisms of carbon assimilation were investigated in thalli and protoplasts of Ulva rigida by measuring HCO 3 (-) -dependent O2 evolution at pH 6.5 and 8.6. In thalli, dextran-bound azetazolamide (DBAZ), a specific inhibitor of extracellular carbonic anhydrase (CA), inhibited the rate of O2 evolution at pH 8.6 when ...

journal_title：Planta

authors： Björk M,Haglund K,Ramazanov Z,Garcia-Reina G,Pedersén M

更新日期：1992-04-01 00:00:00

abstract：:At high potassium concentrations it is possible to isolate largely intact polysomes from fertilized and unfertilized Fucus vesiculosus eggs, and to study the distribution pattern of ribosomal particles in a sucrose gradient. The changes in the ribosomal pattern before and after fertilization reflect the time course of...

journal_title：Planta

authors： Linskens HF

更新日期：1969-06-01 00:00:00

abstract：:As part of a study to identify potential targets of calcium action in plant cells, a 35-kDa, annexin-like protein was purified from pea (Pisum sativum L.) plumules by a method used to purify animal annexins. This protein, called p35, binds to a phosphatidylserine affinity column in a calcium-dependent manner and binds...

journal_title：Planta

authors： Clark GB,Dauwalder M,Roux SJ

更新日期：1992-04-01 00:00:00

abstract：:Tobacco leaves (Nicotiana tabacum var. Wisconsin 38) submitted to anaerobic conditions behave in a manner similar to that of maize, sugarcane, or sorghum leaves (C4-plants); more precisely, a lag time in O2 release is exhibited when the leaves are exposed to light after treatment in the dark under pure nitrogen. Altho...

journal_title：Planta

authors： Carrier JM

更新日期：1977-01-01 00:00:00

abstract：:Haploid plants of Nicotiana tabacum L. were produced in greater numbers from anthers on agar medium containing activated charcoal than on the same medium without charcoal. ...

journal_title：Planta

authors： Anagnostakis SL

更新日期：1974-09-01 00:00:00

abstract：:The role of oxygen in the photoinactivation of the photosynthetic apparatus of Spinacia oleracea L. was investigated. Moderate irradiation (1200 μmol photons m(-2)s(-1)) of spinach leaves in an atmosphere of pure nitrogen caused strong inhibition of subsequently measured net CO2 assimilation, whereas considerably less...

journal_title：Planta

authors： Krause GH,Köster S,Wong SC

更新日期：1985-08-01 00:00:00

abstract：:Each plant species in nature harbors endophytes, a community of microbes living within host plants without causing any disease symptom. However, the exploitation of endophyte-based phytoprotectants is hampered by the paucity of mechanistic understandings of endophyte-plant interaction. We here reported two endophytic ...

journal_title：Planta

authors： Lin L,Ge HM,Yan T,Qin YH,Tan RX

更新日期：2012-12-01 00:00:00

abstract：:Freeze-fracturing of Funaria hygrometrica caulonema cells leads to a cleavage within the plasma membrane. The extraplasmatic and the plasmatic fracture faces differ in their particle density. The plasmatic fracture face in caulonema tip cells or in tip cells of side branches, but never in other caulonema cells, is fur...

journal_title：Planta

authors： Reiss HD,Schnepf E,Herth W

更新日期：1984-04-01 00:00:00