Abstract：
:A depolarization-activated K(+) channel capable of carrying the large K(+) currents that flow from shrinking cells during movements of Samanea saman leaflets has been described in the plasmalemma of Samanea motor cell protoplasts (N Moran et al [1988] Plant Physiol 88:643-648). We now characterize this channel in greater detail. It is selective for K(+) over other monovalent ions, with the following order of relative permeability: K(+) > Rb(+) > Na(+) approximately Cs(+) approximately Li(+). It is blocked by Cs(+) and by Ba(2+) in a voltage dependent manner, exhibiting a ;long-pore' behavior, similarly to various types of K(+) channels in animal systems. Cadmium, known for its blockage of Ca(2+) channels in animal systems, and Gd(3+), closely related to La(3+), which also blocks Ca(2+) channels in animal cells, both block K(+) currents in Samanea in a voltage-independent manner, and without interfering with the kinetics of the currents. The suggested mechanism of block is either (a) by a direct interaction with the K(+) channel, but external to its lumen, or, alternatively, (b) by blocking putative Ca(2+) channels, and preventing the influx of Ca(2+), on which the activation of the K(+) channels may be dependent.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Moran N,Fox D,Satter RLdoi
10.1104/pp.94.2.424subject
Has Abstractpub_date
1990-10-01 00:00:00pages
424-31issue
2eissn
0032-0889issn
1532-2548journal_volume
94pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract：:Gas exchange and plant luminescence (delayed light emission) of a single red kidney bean leaf undergoing synchronous oscillations in gas exchange were recorded and analyzed. Introduction of 1.1 microliter per liter SO(2) during these oscillations produced increases in plant luminescence that, when averaged over a port...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.78.4.904
更新日期：1985-08-01 00:00:00
abstract：:The addition of primary amines to the growth medium of the unicellular green alga Chlamydomonas reinhardtii disrupts cell wall assembly in both vegetative and zygotic cells. Primary amines are competitive inhibitors of the protein-cross-linking activity of transglutaminases. Two independent assays for transglutaminase...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.121.3.1003
更新日期：1999-11-01 00:00:00
abstract：:Plumeria (Plumeria rubra), well known for its brightly colored and fragrant flowers, emits a number of floral volatile organic compounds (VOCs). Plumeria flowers emit a total of 43 VOCs including nine phenylpropanoids/benzenoids, such as 2-phenylethanol (2PE), benzaldehyde, 2-phenylacetaldehyde (PAld), (E/Z)-phenylace...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.19.00098
更新日期：2019-05-01 00:00:00
abstract：:The actin cytoskeleton has been implicated in plant defenses against pathogenic fungi and oomycetes with limited, indirect evidence. To date, there are no reports linking actin with resistance against phytopathogenic bacteria. The dynamic behavior of actin filaments is regulated by a diverse array of actin-binding pro...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.109.137604
更新日期：2009-06-01 00:00:00
abstract：:The kinetic properties of the adenosine 5[prime]-diphosphate/adenosine 5[prime]-triphosphate (ADP/ATP) translocator from pea (Pisum sativum L.) root plastids were determined by silicone oil filtering centrifugation and compared with those of spinach (Spinacia oleracea L.) chloroplasts and pea leaf mitochondria. In add...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.103.1.131
更新日期：1993-09-01 00:00:00
abstract：:Pyridine nucleotide pools were measured in intact plastids from roots of barley (Hordeum vulgare L.) during the onset of NO2- assimilation and compared with the in vitro effect of the NADPH/NADP ratio on the activity of plastidic glucose-6-phosphate dehydrogenase (G6PDH, EC 1.1.1.49) from N-sufficient or N-starved roo...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.114.4.1413
更新日期：1997-08-01 00:00:00
abstract：:Carefully curated proteomes of the inner envelope membrane, the thylakoid membrane, and the thylakoid lumen of chloroplasts from Arabidopsis were assembled based on published, well-documented localizations. These curated proteomes were evaluated for distribution of physical-chemical parameters, with the goal of extrac...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.040717
更新日期：2004-06-01 00:00:00
abstract：:Plants respond in complex ways to their environment, to their internal physiological status, and to the activity of other plants, pathogens, herbivores, and organisms. Plant Signaling 2000, a symposium sponsored by the Penn State Intercollege Graduate Program in Plant Physiology (May 18-20, 2000), explored the machine...
journal_title：Plant physiology
pub_type：
doi：10.1104/pp.124.2.499
更新日期：2000-10-01 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：:Exposure of six wheat (Triticum aestivum L.) and one rye (Secale cereale L.) cultivar to 40% relative humidity for 24 hours induced the same degree of freezing tolerance in seedling epicotyls as did cold conditioning for 4 weeks at 2 degrees C.Frost hardiness varietal relationships were the same in desiccation-stresse...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.69.1.256
更新日期：1982-01-01 00:00:00
abstract：:4-Hydroxyphenylpyruvate dioxygenase (4HPPD) catalyzes the formation of homogentisate (2,5-dihydroxyphenylacetate) from p-hydroxyphenylpyruvate and molecular oxygen. In plants this enzyme activity is involved in two distinct metabolic processes, the biosynthesis of prenylquinones and the catabolism of tyrosine. We repo...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.119.4.1507
更新日期：1999-04-01 00:00:00
abstract：:The peanut (Arachis hypogaea L.) plant is indeterminate in growth habit and day-neutral with respect to flower initiation. The Spanish-type cultivar used in this study begins flowering 3 to 4 weeks from planting under optimum environmental conditions. In this study, irradiance and photoperiod were used to alter the de...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.64.4.665
更新日期：1979-10-01 00:00:00
abstract：:We examined the consistency of the native diploid Nicotiana attenuata (Na)'s herbivore-induced transcriptional changes in the two allotetraploid natives, Nicotiana clevelandii (Nc) and Nicotiana quadrivalvis (Nq), which are thought to be derived from hybridizations with an ancestral Na. An analysis of nuclear-encoded ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.103.037036
更新日期：2004-05-01 00:00:00
abstract：:Interactions between putrescine and membrane function were examined with the use of a recently developed microelectrode system that enables us simultaneously to quantify membrane potentials and net K(+) fluxes associated with individual cells at the root surface of an intact corn (Zea mays L.) seedling. In contrast to...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.90.3.988
更新日期：1989-07-01 00:00:00
abstract：:The influence of anaerobiosis for 0.5 to 15 hours on the last steps of chlorophyll biosynthesis of etiolated oat seedlings was investigated. Phototransformation of protochlorophyllide to chlorophyllide is only slightly reduced and esterification of chlorophyllide is slightly increased by pretreatment under anaerobic c...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.66.4.576
更新日期：1980-10-01 00:00:00
abstract：:Two cDNAs encoding functional carbonic anhydrase (CA) enzymes were recently isolated from a non-photosynthetic, cotyledon library of cotton (Gossypium hirsutum) seedlings with putative plastid-targeting sequences (GenBank accession nos. AF132854 and AF132855). Relative CA transcript abundance and enzyme activity incre...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.010879
更新日期：2002-04-01 00:00:00
abstract：:Environmental stresses frequently decrease plant fertility. In Arabidopsis, the effect of salt stress on reproduction was examined using plants grown in hydroponic medium. Salt stress inhibited microsporogenesis and stamen filament elongation. Because plants grown in hydroponic media can be rapidly and transiently str...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.043091
更新日期：2004-08-01 00:00:00
abstract：:Chimeric constructs containing the promoter and upstream sequences of Ha hsp17.6 G1, a small heat shock protein gene, reproduced in transgenic tobacco (Nicotiana tabacum) its unique seed-specific expression patterns previously reported in sunflower. These constructs did not respond to heat shock, but were expressed wi...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.121.3.723
更新日期：1999-11-01 00:00:00
abstract：:Polyacrylamide gel electrophoresis and electron microscopy revealed that accumulation of iron-protein in soybean nodules is influenced by nodule age, mutation in bradyrhizobia, and rhizobial/bradyrhizobial strain-soybean cultivar interactions. Iron-protein concentrations (micrograms per milligram protein) were inverse...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.83.2.299
更新日期：1987-02-01 00:00:00
abstract：:TAP46 is a protein phosphatase2A (PP2A)-associated protein that regulates PP2A activity in Arabidopsis (Arabidopsis thaliana). To study how PP2A is involved in abscisic acid (ABA) signaling in plants, we studied the function of TAP46 in ABA-regulated seed maturation and seedling development. Expression of TAP46 coinci...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.113.233684
更新日期：2014-02-01 00:00:00
abstract：:Like other chenopods, sugarbeets (Beta vulgaris L. cv Great Western D-2) accumulate glycine betaine when salinized; this may be an adaptive response to stress. The pathway of betaine synthesis in leaves of salinized (150-200 millimolar NaCl) sugarbeet plants was investigated by supplying [(14)C]formate, phosphoryl[(14...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.71.3.692
更新日期：1983-03-01 00:00:00
abstract：:Dunaliella salina is an extremely halotolerant, unicellular, green alga lacking a rigid cell wall. Osmotic adaptation to high salinities is based on the accumulation of glycerol. To uncover other functions responsible for halotolerance, protein profiles of algae continuously grown in different salinities were compared...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.95.3.822
更新日期：1991-03-01 00:00:00
abstract：:Plant regeneration is fundamental to basic research and agricultural applications. The regeneration capacity of plants varies largely in different genotypes, but the reason for this variation remains elusive. Here, we identified a novel thioredoxin DCC1 in determining the capacity of shoot regeneration among Arabidops...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.17.00633
更新日期：2018-03-01 00:00:00
abstract：:Photoconvertible fluorescent proteins (FPs) are recent additions to the biologists' toolbox for understanding the living cell. Like green fluorescent protein (GFP), monomeric EosFP is bright green in color but is efficiently photoconverted into a red fluorescent form using a mild violet-blue excitation. Here, we repor...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.110.165431
更新日期：2010-12-01 00:00:00
abstract：:Experiments with ethylene-insensitive tomato (Lycopersicon esculentum) and petunia (Petunia x hybrida) plants were conducted to determine if normal or adventitious root formation is affected by ethylene insensitivity. Ethylene-insensitive Never ripe (NR) tomato plants produced more below-ground root mass but fewer abo...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.121.1.53
更新日期：1999-09-01 00:00:00
abstract：:The effects of nitrogen source NO(3) (-) or NH(4) (+) on nitrogen metabolism during the first 2 weeks of germination of the rice seedling (Oryza sativa L., var. IR22) grown in nutrient solution containing 40 mug/ml N were studied. Total, soluble protein, and free amino N levels were higher in the NH(4) (+)-grown seedl...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.57.6.923
更新日期：1976-06-01 00:00:00
abstract：:We used tissue printing and specific immunostaining to examine the localization of the alternative oxidase (AOX) protein in correlation with measurements of AOX capacity. Selected root and hypocotyl regions were analyzed during the first 14 d of growth. It is shown that AOX protein is localized in the apical meristem ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.115.4.1499
更新日期：1997-12-01 00:00:00
abstract：:Synechocystis PCC 6803 contains two types of glutathione peroxidase-like proteins (GPX-1 and GPX-2) that utilize NADPH but not reduced glutathione and unsaturated fatty acid hydroperoxides or alkyl hydroperoxides. The steady-state transcript level of gpx-1 gradually increased under oxidative stress conditions imposed ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.044842
更新日期：2004-09-01 00:00:00
abstract：:An apparatus for measuring simultaneously the surface electrical potentials along epicotyl was developed to study the largely bending situation by gravity. Potentials increased on the upper side and decreased on the lower side after the horizontal placement. The time course of electrical changes consisted of two compo...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.97.1.193
更新日期：1991-09-01 00:00:00
abstract：:When the midribs of untreated traps of Dionaea muscipula are frozen in liquid nitrogen after rapid closure, they contain significantly less ATP than those frozen before closure. Exogenous ATP causes a significant increase in the rate of mechanically stimulated trap closure. Illuminated traps close faster than those ke...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.51.1.17
更新日期：1973-01-01 00:00:00
