Synchronous pressure-potential changes in the phloem of Fraxinus americana L.

abstract：:Sieve tubes mediate the long-distance transport of nutrients and signals between source and sink organs of plants. To detect mobile phloem proteins that are differentially distributed in source and sink organs of Cucurbita maxima, we used both one-dimensional gel electrophoresis (SDS-PAGE) and matrix-assisted laser de...

journal_title：Planta

authors： Kehr J,Haebel S,Blechschmidt-Schneider S,Willmitzer L,Steup M,Fisahn J

更新日期：1999-02-01 00:00:00

abstract：:Uptake of NH 4 (+) and NO 3 (-) by the N2-fixing lichens Peltigera praetextata (two-component lichen) and P. aphthosa (three-component lichen) was studied. In addition, the effects of these ions, separately and in combination, on C2H2 reduction and CO2 exchange were examined. Both NH 4 (+) and NO 3 (-) were utilized b...

journal_title：Planta

authors： Hällbom L,Bergman B

更新日期：1983-04-01 00:00:00

abstract：:The genomic sequence of a rice (Oryza sativa L.) glycine-rich protein (GRP) gene, designated Osgrp-2, has been previously determined (GenBank U40708). Primer extension analysis indicated that transcription starts 47 bp upstream of the translation start codon. To gain an insight into the transcriptional regulation of t...

journal_title：Planta

authors： Liu ZZ,Wang JL,Huang X,Xu WH,Liu ZM,Fang RX

更新日期：2003-03-01 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：:PR-1 has been extensively used as a marker for salicylic acid (SA)-mediated defence and systemic and local acquired resistance. The Arabidopsis Genome Project annotates At2g19990 as PR-1. This gene is also identified as PR-1 in two "full genome" Arabidopsis microarrays, and TAIR cites approximately 60 articles to desc...

journal_title：Planta

authors： Laird J,Armengaud P,Giuntini P,Laval V,Milner JJ

更新日期：2004-10-01 00:00:00

abstract：:Using in combination an analysis of (i) the levels of enzyme activities present, (ii) the pool sizes of metabolic intermediates and end products and (iii) the effects of feeding metabolic intermediates, the limitations ℴ flux into tropane alkaloids in a Datura root culture have been examined. This culture, produced by...

journal_title：Planta

authors： Robins RJ,Parr AJ,Payne J,Walton NJ,Rhodes MJ

更新日期：1990-06-01 00:00:00

abstract：:The moss Fontinalis antipyretica, an aquatic bryophyte previously described as desiccation-intolerant, is known to survive intermittent desiccation events in Mediterranean rivers. To better understand the mechanisms of desiccation tolerance in this species and to reconcile the apparently conflicting evidence between d...

journal_title：Planta

authors： de Carvalho RC,Branquinho C,da Silva JM

更新日期：2011-07-01 00:00:00

abstract：:Phytochrome per fresh weight in the apical 0.5 cm of the 1.5-cm coleoptile was twice that in the basal 0.5 cm; phytochrome per dry weight and phytochrome per DNA did not vary significantly from the base to the apex. Ratios of phytochrome to fresh or dry weight in the 6-cm coleoptile were nearly constant in the basal 5...

journal_title：Planta

authors： Correll DL,Edwards JL,Medina VJ

更新日期：1968-12-01 00:00:00

abstract：MAIN CONCLUSION:Distribution of Conyza species is well correlated with human interference. Multiple herbicide resistance is caused by the attempt to overcome resistance to one mode of action by overuse of another. Conyza canadensis (CC) and Conyza bonariensis (CB) are troublesome weeds around the world. Extensive use o...

journal_title：Planta

authors： Matzrafi M,Lazar TW,Sibony M,Rubin B

更新日期：2015-07-01 00:00:00

abstract：MAIN CONCLUSION:Under normal growth conditions, Arabidopsis VOZ1 interacts with DREB2C and acts as a transcriptional repressor by reducing DNA binding of DREB2C. Under heat stress conditions, VOZ1 is degraded by ubiquitination, and DREB2C, which is freed from VOZ1, functions as a transcription activator. To investigate...

journal_title：Planta

authors： Song C,Lee J,Kim T,Hong JC,Lim CO

更新日期：2018-06-01 00:00:00

abstract：:Ricinus communis cv. Carmencita seedlings with their cotyledons incubated in sucrose solution and their hypocotyls cut to induce exudation of phloem sap, constitute a system of sucrose fluxes into and out of the cotyledons. This system was characterized with respect to quasi-steady-state conditions of sucrose uptake a...

journal_title：Planta

authors： Orlich G,Komor E

更新日期：1992-07-01 00:00:00

abstract：:The enzymes gibberellin (GA) 20-oxidase and 3-oxidase are major sites of regulation in GA biosynthesis. We have characterised one member of each of the gene families encoding these enzymes that are highly expressed in elongating stems and in developing and germinating grains of wheat and are therefore likely to have p...

journal_title：Planta

authors： Appleford NE,Evans DJ,Lenton JR,Gaskin P,Croker SJ,Devos KM,Phillips AL,Hedden P

更新日期：2006-02-01 00:00:00

abstract：MAIN CONCLUSION:The present study documented the action of a potential allelochemical, narciclasine, on auxin transport in Arabidopsis by mainly affecting subcellular trafficking of PIN and AUX1 proteins and through interfering actin cytoskeletal organization. Narciclasine (NCS), an Amaryllidaceae alkaloid isolated fro...

journal_title：Planta

authors： Hu Y,Na X,Li J,Yang L,You J,Liang X,Wang J,Peng L,Bi Y

更新日期：2015-12-01 00:00:00

abstract：:C2H4 production of the embryonic axes and cotyledons excised from dormant and non-dormant cocklebur (Xanthium pennsylvanicum Wallr.) seeds was examined in relation to ambient O2 tensions. There were two kinds of C2H4-producing systems, quasi-anaerobic and aerobic, in both organs. Regardless of the organ, the former ac...

journal_title：Planta

authors： Esashi Y,Ohhara Y,Kotaki K,Watanabe K

更新日期：1976-01-01 00:00:00

abstract：:Three lines of evidence indicate a connection between high spermidine levels and floral initiation in thin-layer tissue cultures of Wisconsin-38 tobacco (Nicotiana tabacum L.). (1) Spermidine levels are much higher in floral buds than in vegetative buds. (2) Inhibition of spermidine synthesis by cyclohexylamine preven...

journal_title：Planta

authors： Kaur-Sawhney R,Tiburcio AF,Galston AW

更新日期：1988-02-01 00:00:00

abstract：:NADP-specific isocitrate dehydrogenase is a key cytosolic enzyme that links C and N metabolism by supplying C skeletons for primary N assimilation in plants. We report the characterization of the transcript Mc-ICDH1 encoding an NADP-dependent isocitrate dehydrogenase (NADP-ICDH, EC 1.1.1.42) from the facultative halop...

journal_title：Planta

authors： Popova OV,Ismailov SF,Popova TN,Dietz KJ,Golldack D

更新日期：2002-10-01 00:00:00

abstract：:It is widely reported that some humic substances behave as exogenous auxins influencing root growth by mechanisms that are not yet completely understood. This study explores the hypothesis that the humic acids' effects on root development involve a nitric oxide signaling. Maize seedlings were treated with HA 20 mg C L...

journal_title：Planta

authors： Zandonadi DB,Santos MP,Dobbss LB,Olivares FL,Canellas LP,Binzel ML,Okorokova-Façanha AL,Façanha AR

更新日期：2010-04-01 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：:Experiments have been carried out to determine the basis for the dependence of chloroplast pigment synthesis on protein synthesis in dark-grown cells of Euglena gracilis greening in the light. The complete inhibition of chlorophyll synthesis brought about by actidione (10 μg/ml) when added half way through the greenin...

journal_title：Planta

authors： Kirk JT

更新日期：1967-06-01 00:00:00

abstract：:It has been shown that the scuttellum of germinating barley embryos synthesises gibberellin in intact grains or when detached from the endosperm, but not when attached to the endosperm if the axis is removed. Evidence is given to support the hypothesis that the inhibition of gibberellin synthesis is caused by a distur...

journal_title：Planta

authors： Radley M

更新日期：1969-09-01 00:00:00

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：:This study investigates mechanisms of multiple resistance to glyphosate, acetyl-coenzyme A carboxylase (ACCase) and acetolactate synthase (ALS)-inhibiting herbicides in two Lolium rigidum populations from Australia. When treated with glyphosate, susceptible (S) plants accumulated 4- to 6-fold more shikimic acid than r...

journal_title：Planta

authors： Yu Q,Abdallah I,Han H,Owen M,Powles S

更新日期：2009-09-01 00:00:00

abstract：:Senescence of barley (Hordeum vulgare L. cv. Carina) primary foliage leaves was induced by transfer of the plants into darkness for 2 d. Under these conditions senescence was characterized by a light-reversible decline in the efficiency of photosystem II, and in chlorophyll and protein contents. To isolate senescence-...

journal_title：Planta

authors： Kleber-Janke T,Krupinska K

更新日期：1997-01-01 00:00:00

abstract：:Studies reported here reveal a low nitrate reductase activity in the shoots of MTU 9 rice plants while in roots high enzyme activity has been recorded.Under pathogenesis, a low nitrate reductase activity in the roots and a high enzyme activity in the shoots have been recorded in susceptible rice plants. In the resista...

journal_title：Planta

authors： Singh TK,Subramanian S

更新日期：1966-06-01 00:00:00

abstract：:The role of acidic SK(n) dehydrins in stress tolerance of important crop and model species of the Solanaceae remains unknown. We have previously shown that the acidic SK₃ dehydrin DHN24 from Solanum sogarandinum is constitutively expressed and its expression is associated with cold acclimation. Here we found that DHN2...

journal_title：Planta

authors： Szabala BM,Fudali S,Rorat T

更新日期：2014-04-01 00:00:00

abstract：MAIN CONCLUSION:PtrGH9A7, a poplar β-type endo-1,4-β-glucanase gene induced by auxin, promotes both plant growth and lateral root development by enhancing cell expansion. Endo-1,4-β-glucanase (EGase) family genes function in multiple aspects of plant growth and development. Our previous study found that PtrCel9A6, a po...

journal_title：Planta

authors： Yu L,Li Q,Zhu Y,Afzal MS,Li L

更新日期：2018-05-01 00:00:00

abstract：:Peptone is more effective than nitrate as a nitrogen source for heterotrophic cultures of Chlorella vulgaris (Emerson strain). It allows the production of an increased amount of algal material and supports an enhanced rate of cell division. Peptone-supplied heterotrophic cultures have a significantly higher content of...

journal_title：Planta

authors： Griffiths DJ

更新日期：1967-06-01 00:00:00

abstract：:Chlorophyll fluorescence emission at 680 nm (F680) and the rate of CO2 fixation were measured simultaneously in sections along the length of wheat and maize leaves. These leaves possess a basal meristem and show a gradation in development towards the leaf tip. The redox state of the primary electron acceptor, Q, of ph...

journal_title：Planta

authors： Ireland CR,Baker NR,Long SP

更新日期：1985-09-01 00:00:00

abstract：:Grapevine bud fruitfulness is determined by the differentiation of uncommitted meristem (UCM) into either tendril or inflorescence. Since tendril and inflorescence differentiation have long been considered sequential steps in inflorescence development, factors that control the progression of floral meristem developmen...

journal_title：Planta

authors： Crane O,Halaly T,Pang X,Lavee S,Perl A,Vankova R,Or E

更新日期：2012-01-01 00:00:00

abstract：:Phosphoenolpyruvate (PEP) carboxylase has been isolated from etiolated and light-grown sugar cane, and a comparison made of the physical and kinetic characteristics of the enzymes. Differences were found in the DEAE-cellulose elution profiles, in saturation kinetics with PEP as variable substrate and with Mg(2+) as va...

journal_title：Planta

authors： Goatly MB,Smith H

更新日期：1974-03-01 00:00:00