Abstract:
:Extracts from various parts of Phaseolus vulgaris L. var. Pinto plants were found to exhibit cytokinin activity with the highest levels present in extracts of the fruit tissue. To separate the cytokinins present in the fruit, extracts were chromatographed in several solvent systems. Bioassays of chromatograms indicated the presence of active factors in those regions of migration associated with several known N-6-substituted aminopurines.Ultraviolet and mass spectral studies confirm the presence of a mixture of N-6-substituted aminopurines in the active material isolated by cation exchange resin chromatography. The evidence strongly supports the conclusions that dihydrozeatin is naturally occurring as the free base and possibly as a ribonucleoside. Further, zeatin appears to occur mainly as a glycosidic compound which is altered by KMnO(4) treatment and is hydrolyzed under acid conditions.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Krasnuk M,Witham FH,Tegley JRdoi
10.1104/pp.48.3.320subject
Has Abstractpub_date
1971-09-01 00:00:00pages
320-4issue
3eissn
0032-0889issn
1532-2548journal_volume
48pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Sucrose synthase (Sus; EC 2.4.1.13) is a key enzyme of sucrose metabolism in plant cells, providing carbon for respiration and for the synthesis of cell wall polymers and starch. Since Sus is important for plant cell growth, insights into its structure, localization, and features are useful for defining the relationsh...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.115956
更新日期:2008-08-01 00:00:00
abstract::The activity of the alternative pathway is affected by a number of factors, including the level and reduction state of the alternative oxidase (AOX) protein, and the reduction state of the ubiquinone pool. To investigate the significance of these factors for the rate of alternative respiration in vivo, we studied root...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.126.1.376
更新日期:2001-05-01 00:00:00
abstract::The response of pearl millet (Pennisetum glaucum [L.]) seedlings to prolonged starvation was investigated at the biochemical and ultrastructural level. After 2 days of darkness the bulk of the seedling carbohydrate reserves were depleted. After 8 days in the dark the respiratory rate had declined to less than 50% of i...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.88.4.1381
更新日期:1988-12-01 00:00:00
abstract::Soybean (Glycine max) lipoxygenase (LOX) has been proposed to be involved in reserve lipid mobilization during germination. Here, subcellular fractionation studies show that LOX1, -2, -3, -4, -5, and -6 isozymes were associated with the soluble fraction but not with purified oil bodies. The purified oil bodies contain...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.120.1.227
更新日期:1999-05-01 00:00:00
abstract::Dimethylallyl diphosphate (DMADP) and geranyl diphosphate (GDP) are the last precursors of isoprene and monoterpenes emitted by leaves, respectively. DMADP and GDP pools were measured in leaves of plants emitting isoprene (Populus alba), monoterpenes (Quercus ilex and Mentha piperita), or nonemitting isoprenoids (Prun...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.073213
更新日期:2006-06-01 00:00:00
abstract::Cellulose is the most abundant biopolymer in the world, the main load-bearing element in plant cell walls, and represents a major sink for carbon fixed during photosynthesis. Previous work has shown that photosynthetic activity is partially regulated by carbohydrate sinks. However, the coordination of cellulose biosyn...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.195198
更新日期:2012-05-01 00:00:00
abstract::The action of the polyene antibiotic filipin on the permeability of liposomes prepared with lecithin and several plant and other steroids was studied. The effect of filipin was found to be dependent upon the type of steroid incorporated into the membrane. The interaction of filipin with steroids was found to be relate...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.49.5.852
更新日期:1972-05-01 00:00:00
abstract::d-Lactate accumulation in Chlamydomonas reinhardtii was dependent on anaerobic conditions. As much as 50% of the (14)C after 2 minutes of photosynthetic (14)CO(2) fixation moved into d-lactate from sugar phosphates if the cells became anaerobic for short time periods. No lactate accumulated in the dark until the O(2) ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.78.2.277
更新日期:1985-06-01 00:00:00
abstract::Room temperature chlorophyll a fluorescence was used to determine the effects of developmental history, developmental stage, and leaf age on susceptibility of spinach to in vivo low temperature (5 degrees C) induced photoinhibition. Spinach (Spinacia oleracea cv Savoy) leaves expanded at cold hardening temperatures (5...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.99.3.1141
更新日期:1992-07-01 00:00:00
abstract::The effect of the exogenous and endogenous NO(3) (-) concentration on net uptake, influx, and efflux of NO(3) (-) and on nitrate reductase activity (NRA) in roots was studied in Phaseolus vulgaris L. cv. Witte Krombek. After exposure to NO(3) (-), an apparent induction period of about 6 hours occurred regardless of th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.70.3.754
更新日期:1982-09-01 00:00:00
abstract::Plants possess many metabolic genes for the production of a wide variety of phytochemicals in a tissue-specific manner. However, the metabolic systems behind the diversity and tissue-dependent regulation still remain unknown due to incomplete characterization of phytochemicals produced in a single plant species. Thus,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.148031
更新日期:2010-02-01 00:00:00
abstract::In two cultivars of bean (Phaseolus vulgaris L., Redkloud and Redkote) the older fruits growing at the base of racemes aborted less frequently than the younger ones above them. When older fruits at the base of racemes were removed, the abortion rate of the younger ones was reduced and their abscisic acid (ABA) concent...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.64.4.620
更新日期:1979-10-01 00:00:00
abstract::Two α/β-fold hydrolases, KARRIKIN INSENSITIVE2 (KAI2) and Arabidopsis thaliana DWARF14 (AtD14), are necessary for responses to karrikins (KARs) and strigolactones (SLs) in Arabidopsis (Arabidopsis thaliana). Although KAI2 mediates responses to KARs and some SL analogs, AtD14 mediates SL but not KAR responses. To furth...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.240036
更新日期:2014-07-01 00:00:00
abstract::The time course of abscisic acid (ABA) accumulation during water stress and of degradation following rehydration was investigated by analyzing the levels of ABA and its metabolites phaseic acid (PA) and alkalihydrolyzable conjugated ABA in excised leaf blades of Xanthium strumarium. Initial purification was by reverse...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.66.4.672
更新日期:1980-10-01 00:00:00
abstract::The mitochondrial ATP-binding cassette transporter ATM3 has been studied in Arabidopsis. Its function, however, is poorly understood in other model plant species. This study reports that the ATM3 is required for cytosolic iron-sulfur cluster assembly and is essential for meristem maintenance in rice (Oryza sativa). Th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.01760
更新日期:2017-04-01 00:00:00
abstract::The inhibitory effect of NH4+ on net NO3- uptake has been attributed to an enhancement of efflux and, recently, to an inhibition of influx. To study this controversy, we devised treatments to distinguish the effects of NH4+ on these two processes. Roots of intact barley (Hordeum vulgare L.) seedlings, uninduced or ind...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.4.1293
更新日期:1994-12-01 00:00:00
abstract::No cytokinin activity was found in methanolic mesocarp extracts after purification with petroleum ether and ethyl acetate. Cytokinin activity did appear, however, in aqueous fraction after acid hydrolysis or passage through Dowex 50 (H(+)) ion exchange columns. The level of this activity, the fruit growth rate, and th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.46.2.334
更新日期:1970-08-01 00:00:00
abstract::In celery (Apium graveolens L.), long-distance transport of reduced carbon occurs both in the form of sucrose (Suc) and mannitol. The presence of mannitol has been related to the resistance of celery to salt stress. To investigate the transport events occurring during salt stress, we have cloned the H(+)/Suc transport...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.122.4.1447
更新日期:2000-04-01 00:00:00
abstract::Control of flowering and the regulation of plant architecture have been thoroughly investigated in a number of well-studied dicot plants such as Arabidopsis, Antirrhinum, and tobacco. However, in many important monocot seed crops, molecular information on plant reproduction is still limited. To investigate the regulat...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.125.3.1517
更新日期:2001-03-01 00:00:00
abstract::The elongation response elicited by incubating excised hypocotyl sections of lettuce (Lactuca sativa L.) in light in gibberellin (GA) can be enhanced by the addition of Cl(-), Br(-), and NO(3) (-) salts of K(+) and Na(+). Sections incubated in light in the absence of GA do not elongate in response to the addition of s...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.59.1.61
更新日期:1977-01-01 00:00:00
abstract::Vertical orientation of emerging roots typically is the first response of plants to gravity. Although root gravitropism has been studied extensively, no conclusive data on the onset of gravisensing exist. We determined the inception of gravisensitivity in flax (Linum usitatissimum) roots by clinorotating germinating s...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.073296
更新日期:2006-01-01 00:00:00
abstract::The NB mitochondrial genome found in most fertile varieties of commercial maize (Zea mays subsp. mays) was sequenced. The 569,630-bp genome maps as a circle containing 58 identified genes encoding 33 known proteins, 3 ribosomal RNAs, and 21 tRNAs that recognize 14 amino acids. Among the 22 group II introns identified,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.044602
更新日期:2004-11-01 00:00:00
abstract::The unicellular green alga Chlorella kessleri can induce monosaccharide-H+ symport catalyzing the energy-dependent transport of D-glucose (D-Glc) and several other pentoses and hexoses across the plasmalemma. The gene coding for the inducible HUP1 monosaccharide-H+ symporter has been cloned and the protein has been ch...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.1.33
更新日期:1995-01-01 00:00:00
abstract::In the last few years, much attention has been given to the role of proteins that accumulate during water deficit. In this work, we analyzed the electrophoretic patterns of basic protein extracts, enriched for a number of cell-wall proteins, from bean (Phaseolus vulgaris L.) seedlings and 21-d-old plants subjected to ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.4.1119
更新日期:1995-04-01 00:00:00
abstract::The rate of (14)C-leucine and (3)H-uracil incorporation by tobacco cells (Nicotiana tabaccum var. Samsun N.N.) in suspension culture was simultaneously decreased by the addition of kinetin at concentrations above 2.5 x 10(-5)m. Ribosomal RNA was the first RNA species affected by kinetin. The purine derivatives, adenin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.47.3.400
更新日期:1971-03-01 00:00:00
abstract::The distribution of activity of a potassium-stimulated ATPase associated with the plasma membrane was determined in 4-day-old soybean roots. Changes in protein-based specific activity of the enzyme coincided with developmental changes in the root. Activity was low in the region of the root cap, increased to a maximum ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.63.6.1187
更新日期:1979-06-01 00:00:00
abstract::Blue light is known to induce suppression of stem elongation. To avoid the complication of blue-light-induced transformation of phytochrome we have adapted the procedure of measuring blue-light-induced suppression of stem elongation in Pisum sativum L. var Alaska grown under continuous red light. The resulting fluence...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.89.2.544
更新日期:1989-02-01 00:00:00
abstract::The existence of sphingolipid- and sterol-enriched microdomains, known as lipid rafts, in the plasma membrane (PM) of eukaryotic cells is well documented. To obtain more insight into the lipid molecular species required for the formation of microdomains in plants, we have isolated detergent (Triton X-100)-resistant me...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.091496
更新日期:2007-01-01 00:00:00
abstract::Branched-chain 2-oxo acids which are formed by transamination of leucine, isoleucine, and valine are metabolized by the peroxisomes from mung bean (Vigna radiata L.) hypocotyls. Acylcoenzyme A (CoA) thio ester intermediates of the pathways were separated by reversed-phase high performance liquid chromatography. Retent...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.91.4.1387
更新日期:1989-12-01 00:00:00
abstract::The secretion of alpha-amylase from single isolated (Hordeum vulgare L. cv Himalaya) aleurone layers was studied in an automated flow-through apparatus. The apparatus, consisting of a modified sample analyzer linked to a chart recorder, automatically samples the flow-through medium at 1 minute intervals and assays for...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.70.4.1149
更新日期:1982-10-01 00:00:00