Biochemical Basis of Resistance of Tobacco Callus Tissue Cultures to Hydroxyphenylethylamines.

abstract：:When wheat (Triticum aestivum) seedlings are exposed to a cold temperature (2-4 degrees C) above 0 degrees C, sucrose accumulates and sucrose synthase activity increases. The effect of a cold period on the level of sucrose synthase (SS) was investigated. Using antibodies against wheat germ SS, Western blots studies sh...

journal_title：Plant physiology

authors： Crespi MD,Zabaleta EJ,Pontis HG,Salerno GL

更新日期：1991-07-01 00:00:00

abstract：:Lipid peroxide-derived toxic carbonyl compounds (oxylipin carbonyls), produced downstream of reactive oxygen species (ROS), were recently revealed to mediate abiotic stress-induced damage of plants. Here, we investigated how oxylipin carbonyls cause cell death. When tobacco (Nicotiana tabacum) Bright Yellow-2 (BY-2) c...

journal_title：Plant physiology

authors： Biswas MS,Mano J

更新日期：2015-07-01 00:00:00

abstract：:The effect of varying sequences of red and far red light on sterol biosynthesis in etiolated seedlings of Digitalis purpurea L. was examined. Red light caused a marked increase in the amounts of free and glycosidic sterols and a small decrease in esterified sterols during the first 4 hours after illumination. Far red ...

journal_title：Plant physiology

authors： Jacobsohn MK

更新日期：1978-12-01 00:00:00

abstract：:After incubation for 1 hr with (75)Se-selenate, excised roots of Astragalus crotalariae, a selenium-accumulating species, and A. lentiginosus, a nonaccumulator, had absorbed radioactivity to levels well over the external concentration. About 98% of the radioactivity was ethanol-soluble, and when analyzed by column and...

journal_title：Plant physiology

authors： Shrift A,Ulrich JM

更新日期：1969-06-01 00:00:00

abstract：:A double pressure probe technique was used to measure simultaneously water flows and hydraulic parameters of individual cells and of excised roots of young seedlings of maize (Zea mays L.) in osmotic experiments. By following initial flows of water at the cell and root level and by estimating the profiles of driving f...

journal_title：Plant physiology

authors： Zhu GL,Steudle E

更新日期：1991-01-01 00:00:00

abstract：:Homoserine dehydrogenase is associated with the multibranched pathway of amino acid biosynthesis originating with aspartic acid. Like most of the related pathway enzymes, this enzyme is localized in chloroplasts. The activity and regulatory properties of the threonine-sensitive isozyme of homoserine dehydrogenase isol...

journal_title：Plant physiology

authors： Bryan JK

更新日期：1990-03-01 00:00:00

abstract：:Endo-[beta]-mannanase is hypothesized to be a rate-limiting enzyme in endosperm weakening, which is a prerequisite for radicle emergence from tomato (Lycopersicon esculentum Mill.) seeds. Using a sensitive, single-seed assay, we have measured mannanase activity diffusing from excised tomato endosperm caps following tr...

journal_title：Plant physiology

authors： Still DW,Bradford KJ

更新日期：1997-01-01 00:00:00

abstract：:Although air-filled intercellular spaces are necessary and ubiquitous in higher plants, little attention has been paid to the possible mechanisms by which these spaces are kept from being flooded. The most likely mechanism is that the living plant cell may maintain a hydrophobic monolayer on the surfaces of adjacent i...

journal_title：Plant physiology

authors： Woolley JT

更新日期：1983-08-01 00:00:00

abstract：:Lack of sufficient water is a major limiting factor to crop production worldwide, and the development of drought-tolerant germplasm is needed to improve crop productivity. The phytohormone ethylene modulates plant growth and development as well as plant response to abiotic stress. Recent research has shown that modify...

journal_title：Plant physiology

authors： Shi J,Habben JE,Archibald RL,Drummond BJ,Chamberlin MA,Williams RW,Lafitte HR,Weers BP

更新日期：2015-09-01 00:00:00

abstract：:Serial analysis of gene expression was used to profile transcript levels in Arabidopsis roots and assess their responses to 2,4,6-trinitrotoluene (TNT) exposure. SAGE libraries representing control and TNT-exposed seedling root transcripts were constructed, and each was sequenced to a depth of roughly 32,000 tags. Mor...

journal_title：Plant physiology

authors： Ekman DR,Lorenz WW,Przybyla AE,Wolfe NL,Dean JF

更新日期：2003-11-01 00:00:00

abstract：:Pollen tube growth requires a Ca2+ gradient, with elevated levels of cytosolic Ca2+ at the growing tip. This gradient's magnitude oscillates with growth oscillation but is always maintained. Ca2+ influx into the growing tip is necessary, and its magnitude also oscillates with growth. It has been widely assumed that st...

journal_title：Plant physiology

authors： Dutta R,Robinson KR

更新日期：2004-07-01 00:00:00

abstract：:Zygotes represent an important stage in the sexual cycle of the unicellular green alga Chlamydomonas reinhardtii. To study zygote germination at a molecular level, a protocol was elaborated for the generation of zygotes in large quantities and a method was developed for the extraction from zygotes of RNA that could be...

journal_title：Plant physiology

authors： Wegener D,Treier U,Beck CF

更新日期：1989-06-01 00:00:00

abstract：:Recently, a feedback inhibition of the chloroplastic 1-deoxy-D-xylulose 5-phosphate (DXP)/2-C-methyl-D-erythritol 4-phosphate (MEP) pathway of isoprenoid synthesis by end products dimethylallyl diphosphate (DMADP) and isopentenyl diphosphate (IDP) was postulated, but the extent to which DMADP and IDP can build up is n...

journal_title：Plant physiology

authors： Rasulov B,Talts E,Kännaste A,Niinemets Ü

更新日期：2015-06-01 00:00:00

abstract：:Experiments were conducted in growth chambers to examine the effect of a mild water stress (-200 kilopascals polyethylene glycol) on frond elongation and water status of the ostrich fern (Matteuccia struthiopteris [L.] Todaro). Measurements were taken for two days, starting one day after the application of polyethylen...

journal_title：Plant physiology

authors： Prange RK,Ormrod DP

更新日期：1983-05-01 00:00:00

abstract：:Rhizomes are organs of fundamental importance to plant competitiveness and invasiveness. We have identified genes expressed at substantially higher levels in rhizomes than other plant parts, and explored their functional categorization, genomic organization, regulatory motifs, and association with quantitative trait l...

journal_title：Plant physiology

authors： Jang CS,Kamps TL,Skinner DN,Schulze SR,Vencill WK,Paterson AH

更新日期：2006-11-01 00:00:00

abstract：:Growth of Zea mays L. cv Potro roots was inhibited by the herbicide metsulfuron methyl (MSM) at the lowest concentration tested: 5 nanomoles per liter. Pretreatment of corn seeds with commercial 1,8-naphthalic anhydride (NA) at 1% (w/w) partially reversed MSM-induced root growth inhibition. MSM at a concentration of 5...

journal_title：Plant physiology

authors： Milhomme H,Bastide J

更新日期：1990-06-01 00:00:00

abstract：:Experiments with lettuce seeds during the first hours of imbibition showed that oxygen is necessary to sustain high adenine nucleotide ratios and consequently, energy charge values are higher than 0.8 as is usually the case in normally metabolizing tissues.The energy charge value (0.2) of dry seeds soaked in aerated w...

journal_title：Plant physiology

authors： Hourmant A,Pradet A

更新日期：1981-09-01 00:00:00

abstract：:Either NO(3) (-) (16 millimolar) or NH(4) (+) (1 millimolar) completely inhibited infection and nodulation of white clover seedlings (Trifoliin repens) inoculated with Rhizobium trifolii. The binding of R. trifolii to root hairs and the immunologically detectable levels of the plant lectin, trifoliin, on the root hair...

journal_title：Plant physiology

authors： Dazzo FB,Brill WJ

更新日期：1978-07-01 00:00:00

abstract：:Extracts of resting and germinating (3 days at 20 degrees C) wheat (Triticum aestivum L. cv Ruso) grains rapidly hydrolyzed various benzyloxycarbonyldipeptides (Z-dipeptides) at pH 4 to 6. Similar activities were present in extracts of mature flag leaves. Fractionation by chromatography on CM-cellulose and on Sephadex...

journal_title：Plant physiology

authors： Mikola L

更新日期：1986-07-01 00:00:00

abstract：:The stable carbon isotope composition of isoprene emitted from leaves of red oak (Quercus rubra L.) was measured. Isoprene was depleted in (13)C relative to carbon recently fixed by photosynthesis. The difference in isotope composition between recently fixed carbon and emitted isoprene was independent of the isotopic ...

journal_title：Plant physiology

authors： Sharkey TD,Loreto F,Delwiche CF,Treichel IW

更新日期：1991-09-01 00:00:00

abstract：:In some species, a crucial role has been demonstrated for the seed endosperm during germination. The endosperm has been shown to integrate environmental cues with hormonal networks that underpin dormancy and seed germination, a process that involves the action of cell wall remodeling enzymes (CWREs). Here, we examine ...

journal_title：Plant physiology

authors： Lee KJ,Dekkers BJ,Steinbrecher T,Walsh CT,Bacic A,Bentsink L,Leubner-Metzger G,Knox JP

更新日期：2012-11-01 00:00:00

abstract：:The contribution of the alternative pathway in root respiration of Pisum sativum L. cv Rondo, Plantago lanceolata L., and Plantago major L. ssp major was determined by titration with salicylhydroxamate (SHAM) in the absence and presence of cyanide. SHAM completely inhibited the cyanide-resistant component of root resp...

journal_title：Plant physiology

authors： de Visser R,Blacquière T

更新日期：1984-07-01 00:00:00

abstract：:The development of photochemical activity and carbon assimilation in light-grown cucumber (Cucumis sativus L. cv Natsusairaku) leaves was studied to determine the pattern of acquisition and its relationship to leaf growth and expansion. Measurements of chlorophyll a fluorescence showed that leaves acquire photochemica...

journal_title：Plant physiology

authors： Croxdale JG,Omasa K

更新日期：1990-07-01 00:00:00

abstract：:In order to study the effects of desiccation on a photosynthetic system, light harvesting and light-induced electron transport processes were examined in pea cotyledons at various moisture levels, using in vivo fluorescence excitation spectra and fluorescence induction kinetics. Water sorption isotherms yielded thermo...

journal_title：Plant physiology

authors： Vertucci CW,Ellenson JL,Leopold AC

更新日期：1985-09-01 00:00:00

abstract：:Superoxide dismutases (SODs) play a key role in the cellular defense against reactive oxygen species. To study the transcriptional regulation at the cellular level, the promoter of the Nicotiana plumbaginifolia cytosolic gene encoding Cu/ZnSOD (SODCc) was fused to the beta-glucuronidase (GUS) reporter gene (gusA) and ...

journal_title：Plant physiology

authors： Hérouart D,Van Montagu M,Inzé D

更新日期：1994-03-01 00:00:00

abstract：:As structural and functional genomics efforts provide the biological community with ever-broadening sets of interrelated data, the need to explore such complex information for subtle relationships expands. We present wCLUTO, a Web-enabled version of the stand-alone application CLUTO, designed to apply clustering metho...

journal_title：Plant physiology

authors： Rasmussen MD,Deshpande MS,Karypis G,Johnson J,Crow JA,Retzel EF

更新日期：2003-10-01 00:00:00

abstract：:Coronatine is a chlorosis-inducing toxin produced by the plant pathogen Pseudomonas syringae pv atropurpurea. This bacterium is the causal agent of chocolate spot disease, in which brown lesions with chlorotic margins develop on the leaves of Lolium multiflorum Lam. Among the many physiological changes to plants cause...

journal_title：Plant physiology

authors： Kenyon JS,Turner JG

更新日期：1992-09-01 00:00:00

abstract：:A closed system was designed for concomitant determination of net CO(2) uptake, transpiration, and foliar nitrogen (N) loss in soybeans (Glycine max [L.] Merr.). The CO(2) uptake was monitored by infrared analysis of system air removed periodically in aliquots. Leaf vapors were trapped in calibrated tubes at Dry Ice t...

journal_title：Plant physiology

authors： Weiland RT,Stutte CA

更新日期：1980-02-01 00:00:00

abstract：:The metabolic intermediate acetyl-CoA links anabolic and catabolic processes and coordinates metabolism with cellular signaling by influencing protein acetylation. In this study we demonstrate that in Arabidopsis (Arabidopsis thaliana), two distinctly localized acetate-activating enzymes, ACETYL-COA SYNTHETASE (ACS) i...

journal_title：Plant physiology

authors： Fu X,Yang H,Pangestu F,Nikolau BJ

更新日期：2020-03-01 00:00:00

abstract：:The chloroplastic and cytosolic forms of spinach (Spinacia oleracea cv Long Standing Bloomsdale) leaf NADH:dihydroxyacetone phosphate (DHAP) reductase were separated and partially purified. The chloroplastic form was stimulated by dithiothreitol, reduced thioredoxin, dihydrolipoic acid, 6-phosphogluconate, and phospha...

journal_title：Plant physiology

authors： Gee RW,Byerrum RU,Gerber DW,Tolbert NE

更新日期：1988-06-01 00:00:00