Abstract:
:It has recently been reported that plasmalemma electron transport may be involved in the generation of H(+) gradients and the uptake of ions into root tissue. We report here on the influence of extracellular NADH and ferricyanide on K(+) ((86)Rb(+)) influx, K(+) ((86)Rb(+)) efflux, net apparent H(+) efflux, and O(2) consumption in 2-centimeter corn (Zea mays [A632 x Oh43]) root segments and intact corn roots. In freshly excised root segments, NADH had no effect on O(2) consumption and K(+) uptake. However, after the root segments were given a 4-hour wash in aerated salt solution, NADH elicited a moderate stimulation in O(2) consumption but caused a dramatic inhibition of K(+) influx. Moreover, net apparent H(+) efflux was significantly inhibited following NADH exposure in 4-hour washed root segments.Exogenous ferricyanide inhibited K(+) influx in a similar fashion to that caused by NADH, but caused a moderate stimulation of net H(+) efflux. Additionally, both reagents substantially altered K(+) efflux at both the plasmalemma and tonoplast.These complex results do not lend themselves to straightforward interpretation and are in contradiction with previously published results. They suggest that the interaction between cell surface redox reactions and membrane transport are more complex than previously considered. Indeed, more than one electron transport system may operate in the plasmalemma to influence, or regulate, a number of transport functions and other cellular processes. The results presented here suggest that plasmalemma redox reactions may be involved in the regulation of ion uptake and the ;wound response' exhibited by corn roots.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Kochian LV,Lucas WJdoi
10.1104/pp.77.2.429subject
Has Abstractpub_date
1985-02-01 00:00:00pages
429-36issue
2eissn
0032-0889issn
1532-2548journal_volume
77pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::An automatic digital diffusion porometer circuit is described. The circuit is highly stable with respect to temperature and supply voltage. The device is capable of high timing accuracy over very short measurement intervals, so that measurements may be made rapidly without the danger of stomatal changes occurring duri...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.53.1.47
更新日期:1974-01-01 00:00:00
abstract::Nitric oxide (NO) has recently emerged as an important cellular mediator in plant defense responses. However, elucidation of the biochemical mechanisms by which NO participates in this signaling pathway is still in its infancy. We previously demonstrated that cryptogein, an elicitor of tobacco defense responses, trigg...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.038968
更新日期:2004-05-01 00:00:00
abstract::Membrane preparation (sedimenting between 13,000(g) and 80,000(g)) of germinating radish seeds (Raphanus sativus L.) was active in hydrolyzing ATP and, to a lesser extent, a variety of other phosphorylated compounds. Dicyclohexylcarbodiimide (DCCD) and diethylstilbestrol significantly inhibited the ATPase activity (40...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.68.2.377
更新日期:1981-08-01 00:00:00
abstract::XBAT32, a member of the RING domain-containing ankyrin repeat subfamily of E3 ligases, was previously identified as a positive regulator of lateral root development. Arabidopsis (Arabidopsis thaliana) plants harboring a mutation in XBAT32 produce fewer lateral roots that wild-type plants. We found that xbat32 mutants ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.156976
更新日期:2010-08-01 00:00:00
abstract::The in vivo phosphorylation of starch was studied in Solanum tuberosum cv Dianella and Posmo. Small starch granules contain 25% more ester-bound phosphate per glucose residue than large starch granules. The degree of phosphorylation was found to be almost constant during tuber development. Isolated tuber discs synthes...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.1.111
更新日期:1994-05-01 00:00:00
abstract::Lipases are involved in the generation of jasmonates, which regulate responses to biotic and abiotic stresses. Two sn-1-specific acyl hydrolases, DEFECTIVE IN ANTHER DEHISCENCE1 (DAD1) and DONGLE (DGL), have been reported to be localized in plastids and to be essential and sufficient for jasmonate biosynthesis in Arab...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.155093
更新日期:2010-05-01 00:00:00
abstract::Plant endosperm cells have a nuclear ratio of two maternal genomes to one paternal genome. This 2 to 1 dosage relationship provides a unique system for studying the additivity of gene expression levels in reciprocal hybrids. A combination of microarray profiling and allele-specific expression analysis was performed us...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.101428
更新日期:2007-10-01 00:00:00
abstract::The Type II mutants of the cyanobacterium Synechococcus PCC7942 (G.D. Price, M.R. Badger [1989] Plant Physiol 91: 514-525) are able to accumulate a large pool of inorganic carbon inside the cell, but are unable to utilize it for CO(2) fixation, resulting in a high CO(2)-requiring phenotype. We have isolated a 3.5-kb B...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.2.794
更新日期:1992-10-01 00:00:00
abstract::In culture, the phytopathogenic fungus Phytophthora cryptogea secretes a protein which elicits hypersensitive-like necroses and protects tobacco plants against invasion by the pathogen Phytophthora parasitica var. nicotianae. This protein, named cryptogein, has been purified and its amino acid sequence determined. In ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.95.2.486
更新日期:1991-02-01 00:00:00
abstract::Tonoplast-enriched membranes were prepared from maize (Zea mays L. cv LG 11) primary roots, using sucrose nonlinear gradients. The functional molecular size of the tonoplast ATP-and PPi-dependent proton pumps were analyzed by radiation inactivation. Glucose-6-phosphate dehydrogenase (G6PDH) was added as an internal st...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.90.3.934
更新日期:1989-07-01 00:00:00
abstract::Cyclic nucleotide-gated channels (CNGCs) have been implicated in diverse aspects of plant growth and development, including responses to biotic and abiotic stress, as well as pollen tube growth and fertility. Here, genetic evidence identifies CNGC16 in Arabidopsis (Arabidopsis thaliana) as critical for pollen fertilit...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.206888
更新日期:2013-02-01 00:00:00
abstract::Isolated immature maize (Zea mays L.) embryos have been shown to acquire tolerance to rapid drying between 22 and 25 d after pollination (DAP) and to slow drying from 18 DAP onward. To investigate adaptations in protein profile in association with the acquisition of desiccation tolerance in isolated, immature maize em...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.116.3.1169
更新日期:1998-03-01 00:00:00
abstract::The response of cortical microtubules to low temperature and freezing was assessed for root tips of cold-acclimated and non-acclimated winter rye (Secale cereale L. cv Puma) seedlings using indirect immunofluorescence microscopy with antitubulin antibodies. Roots cooled to 0 or -3 degrees C were fixed for immunofluore...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.93.1.77
更新日期:1990-05-01 00:00:00
abstract::Glucosinolates (GSLs) are secondary metabolites whose degradation products confer intrinsic flavors and aromas to Brassicaceae vegetables. Several structures of GSLs are known in the Brassicaceae, and the biosynthetic pathway and regulatory networks have been elucidated in Arabidopsis (Arabidopsis thaliana). GSLs are ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.01814
更新日期:2017-03-01 00:00:00
abstract::Abscisic acid (ABA), auxins, cytokinins, gibberellic acid, alone or in combination were tested for their effects on short-term sucrose uptake in sugar beet (Beta vulgaris cv USH-20) roots. The effect of ABA on active sucrose uptake varied from no effect to the more generally observed 1.4-to 3.0-fold stimulation. A rac...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.74.4.951
更新日期:1984-04-01 00:00:00
abstract::CesA genes are believed to encode the catalytic subunit of cellulose synthase. Identification of nine distinct CesA cDNAs from maize (Zea mays) has allowed us to initiate comparative studies with homologs from Arabidopsis and other plant species. Mapping studies show that closely related CesA genes are not clustered b...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.123.4.1313
更新日期:2000-08-01 00:00:00
abstract::Enhancing nitrogen use efficiency (NUE) in crop plants is an important breeding target to reduce excessive use of chemical fertilizers, with substantial benefits to farmers and the environment. In Arabidopsis (Arabidopsis thaliana), allocation of more NO3 (-) to shoots was associated with higher NUE; however, the comm...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.01377
更新日期:2016-03-01 00:00:00
abstract::Cotyledons from Phaseolus vulgaris L. (var. Improved Tendergreen) were tested for their activity on alpha-N-benzoyl-dl-arginine-p-nitroanilide (BAPNA) and azocasein during a germination periood of 10 days. Both activities increased throughout germination when activity was expressed on the basis of dry weight or protei...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.74.3.494
更新日期:1984-03-01 00:00:00
abstract::At low water potential (psi(w)), dehydration reduces the symplast volume of leaf tissue. The effect of this reduction on photosynthetic capacity was investigated. The influence of osmotic adjustment on this relationship was also examined. To examine these relationships, comparative studies were undertaken on two wheat...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.85.4.1040
更新日期:1987-12-01 00:00:00
abstract::Previous work indicated more polysomes bound to pea (Pisum sativum cv Progress No. 9) thylakoids in light than in the dark, in vivo (LE Fish, AT Jagendorf 1982 Plant Physiol 69: 814-825). With isolated intact chloroplasts incubated in darkness, addition of MgATP had no effect but 24 to 74% more RNA was thylakoid-bound...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.84.1.31
更新日期:1987-05-01 00:00:00
abstract::The plant-specific Rop subfamily of Rho GTPases, most closely related to the mammalian Cdc42 and Rac GTPases, plays an important role in the regulation of calcium-dependent pollen tube growth, H(2)O(2)-mediated cell death, and many other processes in plants. In a search for Rop interactors using the two-hybrid method,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.124.4.1625
更新日期:2000-12-01 00:00:00
abstract::Photosynthetically derived sugar provides carbon skeletons for lipid biosynthesis. We used mutants of Arabidopsis (Arabidopsis thaliana) and the expression of oleogenic factors to investigate relationships among sugar availability, lipid synthesis, and the accumulation of triacylglycerol (TAG) in leaf tissue. The adg1...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.00828
更新日期:2017-10-01 00:00:00
abstract::We have shown that amide-linked IAA (indole-3-acetic acid) conjugates accumulated to high levels during maturation of bean seeds (K. Bialek and J.D. Cohen [1989] Plant Physiol 91: 775-779). In the present study, we were interested in the fate of these and other IAA conjugates during seed germination. The content of am...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.4.2002
更新日期:1992-12-01 00:00:00
abstract::All visible protoplasmic streaming in sections of various plant stems was reversibly stopped by 2,4-dinitrophenol (DNP). Sections contained epidermal, cortical, and fiber cell types. Cells treated with DNP retained their semipermeability as evidenced by their plasmolysis in sucrose solutions. Washing out the DNP resul...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.43.10.1648
更新日期:1968-10-01 00:00:00
abstract::N(6)-(Delta(2)-isopentenyl)Adenine and N(6)-(Delta(2)-isopentenyl)adenosine were hydroxylated, respectively, to 6-(4-hydroxy-3-methyl-trans-2-butenylamino)purine and 6-(4-hydroxy-3-methyl-trans-2-butenylamino) -9-beta-ribofuranosylpurine in the presence of NADPH and the microsomal fraction from cauliflowers (Brassica ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.75.2.442
更新日期:1984-06-01 00:00:00
abstract::The Medicago truncatula line 2HA has a 500-fold greater capacity to regenerate plants in culture by somatic embryogenesis than wild-type Jemalong. We have compared proteomes of tissue cultures from leaf explants of these two lines. Both 2HA and Jemalong explants were grown on media containing the auxin 1-naphthaleneac...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.055277
更新日期:2005-04-01 00:00:00
abstract::The cytosolic pools of glucose-1-phosphate (Glc-1-P) and glucose-6-phosphate are essential intermediates in several biosynthetic paths, including the formation of sucrose and cell wall constituents, and they are also linked to the cytosolic starch-related heteroglycans. In this work, structural features and biochemica...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.127969
更新日期:2008-11-01 00:00:00
abstract::An oligomycin concentration that specifically inhibits oxidative phosphorylation was added to isolated barley (Hordeum vulgare L.) leaf protoplasts at various irradiances and carbon dioxide concentrations. At saturating as well as low light intensities, photosynthetic oxygen evolution was decreased as a result of the ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.102.3.947
更新日期:1993-07-01 00:00:00
abstract::The turnover of dhurrin in green seedlings of Sorghum bicolor (Linn) Moench var Redland x Greenleaf, Sudan 70 has been investigated using glyphosate and pulse-labeling studies with (14)C-tyrosine and [(14)C]shikimic acid. The rate of dhurrin breakdown was 4.8 nanomoles per hour in the shoot and 1.4 nanomoles per hour ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.3.1219
更新日期:1990-11-01 00:00:00
abstract::Cells of Anabaena PCC 7119 and of a mutant strain of Nostoc muscorum unable to fix dinitrogen, grown at pH 8 and under low CO(2) tension (air), showed a reduced capacity for photosynthesis when cultured in the absence of sodium, this inhibition being followed by symptoms of photooxidation, such as chlorosis, oxygen co...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.85.2.585
更新日期:1987-10-01 00:00:00