abstract：:The (12)CO2- and (14)CO2-exchange of illuminated corn leaf discs were measured at normal (21%) and low (1%) oxygen. After periods of exposure to (14)CO2 or to (14)CO2 followed by (12)CO2, the discs were killed and the specific activities of some metabolites were determined. At both O2 concentrations the specific activ...

journal_title：Planta

authors： Mahon JD,Fock H,Höhler T,Canvin DT

更新日期：1974-01-01 00:00:00

abstract：:Acid phosphatase has been localized by cytochemical techniques in aleurone layers of dry barley (Hordeum vulgare L.) grains, in imbibed half-grains and in isolated layers treated with and without gibberellic acid (GA3). A major fraction of the enzyme activity is located in the cell walls. During imbibition and incubat...

journal_title：Planta

authors： Ashford AE,Jacobsen JV

更新日期：1974-01-01 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

authors： Wellburn FA,Wellburn AR,Stoddart JL,Treharne KJ

更新日期：1973-12-01 00:00:00

abstract：:Germination of fruits of Lactuca sativa L. cv. "Arctic King" showed a sharp upper temperature maximum at 31±1.0°C on an agar substrate in light. In a series of 60 tests carried out over 2 years, above, below and in the region of this maximum it was demonstrated that variability of germination counts was greater in the...

journal_title：Planta

authors： Reynolds T

更新日期：1973-12-01 00:00:00

abstract：:The activities of α-galactosidase, β-mannosidase and α-mannosidase were determined in extracts from the endosperm and from the embryo of fenugreek seeds at different stages of germination. Endosperm homogenates contained little or no activity of the above enzymes in the early stages of germination, before the reserve ...

journal_title：Planta

authors： Grant Reid JS,Meier H

更新日期：1973-12-01 00:00:00

abstract：:Indoleacetic acid buffered at pH 7.0 induces a high growth rate in Avena coleoptile segments after a latent period, the duration of which is dependent upon both IAA concentration and temperature. A minimum latent period of 7.3 min is observed at 25° C with 10(-3) M IAA in phosphate buffer at pH 7.0.In contrast, 5×10(-...

journal_title：Planta

authors： Philipson JJ,Hillman JR,Wilkins MB

更新日期：1973-12-01 00:00:00

abstract：:Analogies and differences between the growth-promoting action of fusicoccin (FC), the toxic agent produced by Fusicoccum amygdali, and of indole-3-acetic acid (IAA) in etiolated pea internode segments were further investigated. It was confirmed that the effect of FC, at optimal concentration, on growth by cell enlarge...

journal_title：Planta

authors： Lado P,Caldogno FR,Pennacchioni A,Marrè E

更新日期：1973-12-01 00:00:00

abstract：:Auxin transport in corn coleoptile sections was inhibited by 2,3,5-triiodobenzoic acid (TIBA) as well as by 1-N-naphthylphthalamic acid (NPA); this inhibition was effected within 1 min of application.A particulate cell fraction-presumably plasma-membrane vesicles-specifically binds NPA and properties of these binding ...

journal_title：Planta

authors： Thomson KS,Hertel R,Müller S,Tavares JE

更新日期：1973-12-01 00:00:00

abstract：:A glutamine synthetase has been localised in the chloroplasts of Vicia faba. The enzyme has requirements for Mg(2+) and ATP in the biosynthetic reaction and in addition will catalyse a γ-glutamyl transferase reaction in the presence of Mn(2+) and arsenate. The enzyme is inhibited by AMP, CTP, glycine and alanine. Thes...

journal_title：Planta

authors： Haystead A

更新日期：1973-09-01 00:00:00

abstract：:Gibberellic-acid(GA3)-induced α-amylase has been localised in barley aleurone layers using cytochemical methods and light microscopy. Evidence obtained from the use of a starch substrate film method as well as immunofluorescence indicated that the first amylase to appear in the cell was associated with aleurone grains...

journal_title：Planta

authors： Jacobsen JV,Knox RB

更新日期：1973-09-01 00:00:00

abstract：:1-Sinapoylglucose was isolated in cristalline form from mutants of Matthiola incana. In addition, 1-feruloyl-glucose and 1-p-cumaroyl-glucose were isolated and identified by paper chromatography. The molecular weights of penta-(trimethylsilyl)-1-sinapoyl-glucose and penta-(trimethylsilyl)-1-feruloyl-glucose have been ...

journal_title：Planta

authors： Ritter-Thomas U

更新日期：1973-09-01 00:00:00

abstract：:Synthesis of anthocyanin pigments in etiolated cabbage seedlings is influenced by ethylene at concentrations higher than 10 ppb, and etiolated seedlings produce sufficient ethylene to influence their anthocyanin synthesis. When escape of endogenous ethylene from this tissue is enhanced by means of hypobaric treatment,...

journal_title：Planta

authors： Kang BG,Burg SP

更新日期：1973-09-01 00:00:00

abstract：:Colchicine has been demonstrated by ion-exchange and by gelfiltration assay to bind to a protein fraction derived from the higher plant Heracleum mantegazzianum. Colchicine-binding protein from a plant source was much more unstable than tubulin from animal preparations. The tissues of Heracleum vary in their content o...

journal_title：Planta

authors： Hart JW,Sabnis DD

更新日期：1973-06-01 00:00:00

abstract：:Etioplasts and chloroplasts isolated from Pisum sativum differ in lipid composition. The relative amounts of galactolipids, especially of MGD, are higher in the chloroplast. In contrast, the sulfo- and the phospholipids are already present in the etioplasts in higher concentrations. During the formation of the thylako...

journal_title：Planta

authors： Heise KP,Jacobi G

更新日期：1973-06-01 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：:Barley leaves extracted 35 min after a 15-min pulse of 10(-6) M (14)C-labelled cis,trans-(±)-abscisic acid (ABA) showed very little breakdown of the ABA. Leaves extracted 2 h after a 30-min pulse of 10(-5) M labelled ABA showed at least 34% degradation of the hormone. The pattern of degradation was very similar for le...

journal_title：Planta

authors： Cummins WR

更新日期：1973-06-01 00:00:00

abstract：:The movement of applied (137)Cs and of naturally-assimilated (14)C down the long stolon of Saxifraga is strongly inhibited by confining a length of 10 to 30 cm of the stolon in an atmosphere of nitrogen. The inhibition is reversible, normal transport being restored after less then 4 h when the stolon is returned to ai...

journal_title：Planta

authors： Qureshi FA,Spanner DC

更新日期：1973-06-01 00:00:00

abstract：:Enhancement of carbon fixation was demonstrated in the bluegreen alga, Anabaena cylindrica, grown in either aerobic or microaerobic conditions. Under identical conditions no enhancement of acetylene reduction was observed. Light absorbed by photosystem I supported relatively more acetylene reduction than carbon fixati...

journal_title：Planta

authors： Lyne RL,Stewart WD

更新日期：1973-03-01 00:00:00

abstract：:Cycloheximide (CH) was applied selectively either to the shoot apex or by infiltration to the leaves of the long-day plant Hyoscyamus niger in order to investigate whether this inhibitor has an effect on the synthesis of a floral stimulus in the leaves. Treatment of the shoot apex with CH caused inhibition of the phot...

journal_title：Planta

authors： Klautke S,Rau W

更新日期：1973-03-01 00:00:00

abstract：:The sites of transcription and translation of carotenoid pigments were studied in synchronously grown cells of Chlamydomonas reinhardtii Dang. Rifampicin, cycloheximide and spectinomycin were used to distinguish between the nuclear-cytoplasmic genetic system and the genetic system of the chloroplast. Since rifampicin ...

journal_title：Planta

authors： Sirevåg R,Levine RP

更新日期：1973-03-01 00:00:00

abstract：:Through the use of gas chromatography-mass spectrometry techniques two simple brominated phenols, 2,3-dibromo-4,5-dihydroxybenzyl alcohol (lanosol) and 3,5-dibromo-p-hydroxybenzyl alcohol, were identified in an axenically cultured bluegreen alga, Calothrix brevissima. The alga was grown in a mineral medium supplemente...

journal_title：Planta

authors： Pedersén M,Dasilva EJ

更新日期：1973-03-01 00:00:00

abstract：:In both the seminal axis and lateral roots of Cucurbita pepo L. the formation of large central xylem elements and the commencement of secondary cambial activity occur 10-20 cm from the root tip. Concomitant with or slightly preceding these developments there are changes in the structure of the walls of endodermal cell...

journal_title：Planta

authors： Harrison-Murray RS,Clarkson DT

更新日期：1973-03-01 00:00:00

abstract：:The enhancement by indoleacetic acid (IAA) of (36)Cl(-) uptake into Avena coleoptile sections was used to study the effects of a hormone on a membrane-controlled phenomenon. Compared to sections in phosphate buffer only, Cl(-) content of the cells increases 15 min after addition of IAA; the promotion is seen only with...

journal_title：Planta

authors： Rubinstein B,Light EN

更新日期：1973-03-01 00:00:00

abstract：:Early embryonic development was compared in self-fertilized embryos of the diploid species, Hibiscus costatus, and triploid hybrid embryos, H. costatus-aculeatus and H. costatus-furcellatus, the paternal parent in both hybrids being tetraploid. The self-fertilized zygotes shrank to 50% of the volume of the unfertilize...

journal_title：Planta

authors： Ashley T

更新日期：1972-12-01 00:00:00

abstract：:The rate of total phytochrome decay in the dicotyledons Amaranthus caudatus, Mirabilis jalapa and Pisum sativum under continuous illumination with red, incandescent, and blue light depends on the PFR/Ptotal maintained by each source. Amaranthus is an exception to this in that there is a deviation from firstorder decay...

journal_title：Planta

authors： Kendrick RE

更新日期：1972-12-01 00:00:00

abstract：:The possible mechanism which leads to inactivation phenomena at high intensities of blue light during the color-sensitive phase in the time course of the Hill reaction was investigated in more detail. The following results were obtained: a) The inhibition of the Hill reaction is also observed during but not prior to t...

journal_title：Planta

authors： Harnischfeger G

更新日期：1972-12-01 00:00:00

abstract：:Extracts of sycamore cambial tissue convert UDP-glucose into UDP-glucuronic acid, and the latter into UDP-xylose and UDP-rhamnose. None of the corresponding galactose series of monosaccharides was formed indicating the absence of epimerases, postulated as an important feature of differentiation. UDP-glucose is formed ...

journal_title：Planta

authors： Boothby D

更新日期：1972-12-01 00:00:00

abstract：:Individual leaves of eastern cottonwood (Populus deltoides), representing an ontogenetic series from leaf plastochron index 0.0 to 8.0, were fed (14)CO2 photosynthetically and then harvested at times ranging from 15 to 1440 min. The lamina of each fed leaf was sectioned from tip to base into 5 parts, and each part was...

journal_title：Planta

authors： Larson PR,Isebrands JG,Dickson RE

更新日期：1972-12-01 00:00:00

abstract：:Endogenous gibberellins were obtained in agar from the lower cut surface of upright sunflower shoot-tips. Exposure to unilateral light of the tips standing on agar, with the lower cut ends bisected by a vertical glass barrier at right angles to incident light, resulted in approximately 8 times the quantity of gibberel...

journal_title：Planta

authors： Phillips ID

更新日期：1972-12-01 00:00:00

abstract：:The cytokinin isomers, 1- and 9-isopentenyladenine, are very active inhibitors of cell division in the protonema of the moss Ceratodon purpureus. They also abolish the N(6)-isopentenyladenine-induced stimulation of cell divisions in this material whereas they are inactive on the induction of gametophore buds in moss p...

journal_title：Planta

authors： Szweykowska A,Korcz I

更新日期：1972-09-01 00:00:00

abstract：:When barley aleurone layers are treated with gibberellic acid (GA3) in the presence of increasing concentrations (0.2-0.8 M) of mannitol, the rate of (32)Pi incorporation into phospholipids becomes progressively inhibited. Mannitol does not affect this process in aleurone layers not treated with GA3, nor does it appre...

journal_title：Planta

authors： Koehler D,Johnson KD,Varner JE,Kende H

更新日期：1972-09-01 00:00:00

abstract：:Incubation of violaxanthin with lipoxygenase and linoleate gave rise to the plant growth inhibitor, xanthoxin; and the yields were reduced to 1/10 and 1/20 by the omission of lipoxygenase and both lipoxygenase and linoleate respecively. ...

journal_title：Planta

authors： Firn RD,Friend J

更新日期：1972-09-01 00:00:00

abstract：:Surgical experiments on Helianthus annuus and Phaseolus multiflorus seedlings involving the application of auxin and gibberellin to decapitated plants, suggested that internode extension growth occurs under the controlling influence of apically synthesised gibberellin rather than auxin. Studies were made of diffusible...

journal_title：Planta

authors： Phillips ID

更新日期：1972-09-01 00:00:00

abstract：:Using the aphid stylet technique (14)C ATP was shown to be readily taken up into the sieve elements of willow. At the same time this compound was found to be metabolised during uptake resulting in labelled ADP and AMP appearing in the stylet exudate. Longitudinal movement of labelled ATP was also found to occur.Measur...

journal_title：Planta

authors： Gardner DC,Peel AJ

更新日期：1972-09-01 00:00:00

abstract：:The growth of Lemna minor in darkness is log-linear, at a much reduced rate compared to growth in white or red light. This rate of frond production in darkness is stimulated by kinetin, yeast extract, and thiamine either in green plants transferred directly from the light or in plants which had been grown in the dark ...

journal_title：Planta

authors： Frick H,Mohr H

更新日期：1972-09-01 00:00:00

abstract：:The free amino acid pools in the nitrogen-fixing blue-green algae Anabaena cylindrica, A. flos-aquae and Westiellopsis prolifica contain a variety of amino acids with aspartic acid, glutamic acid and the amide glutamine being present in much higher concentrations than the others. This pattern is characteristic of that...

journal_title：Planta

authors： Dharmawardene MW,Stewart WD,Stanley SO

更新日期：1972-06-01 00:00:00

abstract：:Germinating barley grains contain at least eight different peptidases: three carboxypeptidase (pH optima 4.8, 5.2, and 5.7), three aminopeptidases which act on aminoacyl-β-naphthylamides (pH opitima in the hydrolysis of di- and tripeptides at pH 5.8-6.5), and two peptidases which hydrolyse Ala-Gly and Leu-Tyr optimall...

journal_title：Planta

authors： Mikola J,Kolehmainen L

更新日期：1972-06-01 00:00:00

abstract：:A bioassay for the inhibition of flowering involving the in vitro culture of excised, partially-induced, apices of Viscaria candida is described. This bioassay has been used to detect flowering inhibition in extracts from Kalanchoe blossfeldiana. ...

journal_title：Planta

authors： Blake J

更新日期：1972-06-01 00:00:00

abstract：:Gibberellin-like substances were present in cell-free culture medium of autotrophically grown Thiobacillus novellus. Dwarf-pea and cucumber-hypocotyl bioassays indicate presence of two gibberellin-like compounds. ...

journal_title：Planta

authors： Gairola C,Bhalla PR,Sabharwal PS,Aleem MI

更新日期：1972-06-01 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

authors： Gresshoff PM,Doy CH

更新日期：1972-06-01 00:00:00