Abstract:
:The effect of ice encasement on the physiological, metabolic, and ultrastructural properties of winter wheat (Triticum aestivum L.) grown under field conditions was examined by artificially encasing winter wheat in ice during early winter. Cold hardiness and survival of ice-encased seedlings declined less rapidly in Kharkov, a cold-hardy cultivar than in Fredrick, a less hardy cultivar. Ethanol did not accumulate in non-iced seedlings, but increased rapidly upon application of an ice sheet. Lactic acid accumulated in both cultivars during late autumn, prior to ice encasement, and elevated levels of lactic acid were maintained throughout the winter in seedlings from both iced and non-iced plots. The rate of O(2) consumption of shoot tissue of seedlings from non-iced plots remained relatively constant throughout the winter, but declined rapidly in seedlings from ice encased plots. Major ultrastructural changes did not occur in shoot apex cells of non-iced winter wheat seedlings during cold hardening under field conditions. However, the imposition of an ice cover in early January resulted in a proliferation of the endoplasmic reticulum membrane system of the cells, frequently resulting in the formation of concentric whorls of membranes, often enclosing cytoplasmic organelles. Electrondense areas within the cytoplasm which appeared to be associated with the expanded endoplasmic reticulum were also frequently observed.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Pomeroy MK,Andrews CJdoi
10.1104/pp.61.5.806subject
Has Abstractpub_date
1978-05-01 00:00:00pages
806-11issue
5eissn
0032-0889issn
1532-2548journal_volume
61pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::A previously isolated rice (Oryza sativa) rbcS gene was further characterized. This analysis revealed specific sequences in the 5' regulatory region of the rice rbcS gene that are conserved in rbcS genes of other monocotyledonous species. In transgenic rice plants, we examined the expression of the beta-glucuronidase ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.102.3.991
更新日期:1993-07-01 00:00:00
abstract::Treatment of suspension-cultured tobacco (Nicotiana tabacum var Xanthi) cells with cryptogein, a proteinaceous elicitor from Phytophthora cryptogea, induced a great stimulation of Ca2+ influx within the first minutes. Ca2+ influx is essential for the initiation of cryptogein-induced responses, since ethyleneglycol-bis...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.3.1025
更新日期:1995-11-01 00:00:00
abstract::The light and CO(2) response of (a) photosynthesis, (b) the activation state and total catalytic efficiency (k(cat)) of ribulose-1,5-bisphosphate carboxylase (rubisco), and (c) the pool sizes of ribulose 1,5-bisphosphate, (RuBP), ATP, and ADP were studied in the C(3) annuals Chenopodium album and Phaseolus vulgaris at...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.4.1735
更新日期:1990-12-01 00:00:00
abstract::The eukaryotic genome is duplicated exactly once per cell division cycle. A strategy that limits every replication origin to a single initiation event is tightly regulated by a multiprotein complex, which involves at least 20 protein factors. A key player in this regulation is the evolutionary conserved hexameric MCM2...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.074294
更新日期:2006-02-01 00:00:00
abstract::An important part in the understanding of the regulation of carbon partitioning within the leaf is to investigate the endogenous variations of parameters related to carbon metabolism. This study of diurnal changes in the activities of sucrose-synthesizing enzymes and levels of nonstructural carbohydrates in intact lea...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.3.1230
更新日期:1992-11-01 00:00:00
abstract::Storage protein hydrolysis in the cotyledons of germinating mung beans (Phaseolus aureus Roxb.) was examined by histochemical techniques, and the autolytic capacity of isolated protein bodies was studied with biochemical methods. The localization of endopeptidase activity within the cotyledons was studied using an Ind...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.2.292
更新日期:1975-08-01 00:00:00
abstract::The major nucleoside triphosphatase (NTPase) activities in mammalian and pea (Pisum sativum L.) nuclei are associated with enzymes that are very similar both biochemically and immunochemically. The major NTPase from rat liver nuclei appears to be a 46-kD enzyme that represents the N-terminal portion of lamins A and C,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.101.3.1005
更新日期:1993-03-01 00:00:00
abstract::With an experimental system using mass spectrometry techniques and infra-red gas analysis of CO(2) developed for aquatic plants, we studied the responses to various light intensities and CO(2) concentrations of photosynthesis and O(2) uptake of the red macroalga Chondrus crispus S. The CO(2) exchange resistance at air...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.75.4.919
更新日期:1984-08-01 00:00:00
abstract::Identification of mechanisms that decrease cadmium accumulation in plants is a prerequisite for minimizing dietary uptake of cadmium from contaminated crops. Here, we show that cadmium inhibits nitrate transporter 1.1 (NRT1.1)-mediated nitrate (NO3 (-)) uptake in Arabidopsis (Arabidopsis thaliana) and impairs NO3 (-) ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.243766
更新日期:2014-10-01 00:00:00
abstract::A nonphotosynthetic phosphoenolpyruvate carboxylase (EC 4.1.1.31) was partially purified from the cytosol of root nodules of alfalfa. The enzyme was purified 86-fold by ammonium sulfate fractionation, DEAE-cellulose, hydroxylapatite chromatography, and reactive agarose with a final yield of 32%. The enzyme exhibited a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.75.1.261
更新日期:1984-05-01 00:00:00
abstract::Our results show that the phosphate ion is a nonlinear competitive inhibitor of Pinus pinea isocitrate lyase. In addition, this compound induces a sigmoidal response of the enzyme, which usually exhibits standard Michaelis-Menten kinetics. This peculiar behavior of P. pinea isocitrate lyase could be explained by a dim...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.124.3.1131
更新日期:2000-11-01 00:00:00
abstract::In Rhodella violacea phycoerythrin (PE) has two transcripts, a premessenger and a mature messenger (the gene contains an intron). Phycocyanin, which is plastid-encoded, and the 33-kD PE rod linker polypeptide, which is nuclear-encoded, have only one transcript. The PE premessenger had a rapid turnover; mature transcri...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.3.1045
更新日期:1996-11-01 00:00:00
abstract::Measurements of metabolic fluxes in whole embryos and isolated plastids have revealed major changes in the pathways of carbon utilization during cotyledon filling by oilseed rape (Brassica napus L.) embryos. In the early cotyledon stage (stage A), embryos used sucrose (Suc) predominantly for starch synthesis. Plastids...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.122.3.767
更新日期:2000-03-01 00:00:00
abstract::We screened a total of 1365 pea (Pisum sativum) lines for response to inoculation with Agrobacterium tumefaciens, strain B6, and characterized resistance in one cultivar, Sweet Snap. Sweet Snap seedlings were highly resistant to tumorigenesis under most conditions. Resistance was overcome at inoculum concentrations of...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.95.1.52
更新日期:1991-01-01 00:00:00
abstract::Dwarf mutants of pea (Pisum sativum), with impaired gibberellin (GA) biosynthesis in the shoot, were studied to determine whether the roots of these genotypes had altered elongation and GA levels. Mutations na, lh-2, and ls-1 reduced GA levels in root tips and taproot elongation, although in lh-2 and ls-1 roots the re...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.125.2.627
更新日期:2001-02-01 00:00:00
abstract::Changes in lipid composition were followed as a proplastid develops into a chloroplast. Methods were devised for the isolation of developing proplastids from sections of five different ages from the same 7-day-old maize (Zea mays var. Kelvedon Glory) leaf. Electron micrographs illustrate the homogeneity of the five ty...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.5.789
更新日期:1976-05-01 00:00:00
abstract::Low inorganic phosphate (Pi) availability triggers an array of spatiotemporal adaptive responses in Arabidopsis (Arabidopsis thaliana). There are several reports on the effects of Pi deprivation on the root system that have been attributed to different growth conditions and/or inherent genetic variability. Here we sho...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.136184
更新日期:2009-06-01 00:00:00
abstract::Excised corn roots, Zea mays, had radioactively labeled solution applied at two points along their length, for 1 minute, and were then kept in dilute, unlabeled nutrient solution. During this "chase" period, exudate was collected at 1-minute intervals, and its content of radioions was determined. Two pulses of label a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.52.4.346
更新日期:1973-10-01 00:00:00
abstract::We have tested directly the effect of Helminthosporium maydis T (Hmt) toxin and various analogs on the membrane potential formed in mitochondria isolated from a Texas (T) cytoplasmic male-sterile and a normal (N) corn. ATP, malate or succinate generated a membrane potential (negative inside) as monitored by the absorb...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.84.3.670
更新日期:1987-07-01 00:00:00
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::During the last century, two key hypotheses have been proposed to explain apical dominance in plants: auxin promotes the production of a second messenger that moves up into buds to repress their outgrowth, and auxin saturation in the stem inhibits auxin transport from buds, thereby inhibiting bud outgrowth. The recent...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.134783
更新日期:2009-05-01 00:00:00
abstract::Traditional virus-induced gene silencing (VIGS) is a powerful virus-based short interfering RNA-mediated RNA silencing technique for plant functional genomics. Besides short interfering RNAs, microRNAs (miRNAs) have also been shown to regulate gene expression by RNA silencing in various organisms. However, plant virus...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.155796
更新日期:2010-06-01 00:00:00
abstract::Photometric analysis of chloroplast movements in various phytochrome (phy) mutants of Arabidopsis showed that phyA, B, and D are not required for chloroplast movements because blue light (BL)-dependent chloroplast migration still occurs in these mutants. However, mutants lacking phyA or phyB showed an enhanced respons...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.029116
更新日期:2003-12-01 00:00:00
abstract::Although the Mutator (Mu) system is well characterized in maize (Zea mays), very little is known about this highly mutagenic system of transposons in other grasses. Mutator is regulated by the MuDR class of elements, which encodes two genes, one of which, mudrA, has similarity to a number of bacterial transposases. Ex...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.125.3.1293
更新日期:2001-03-01 00:00:00
abstract::Substantial errors can be introduced to estimates of leaf resistance (r(l)) obtained from diffusion porometers unless precautions are taken to reduce the leaf-cup temperature difference (T(leaf) - T(cup)) to acceptable levels prior to measurement. When T(leaf) > T(cup), underestimation of leaf resistance occurs; the r...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.47.4.559
更新日期:1971-04-01 00:00:00
abstract::Starch production in all plants examined is altered by mutations of isoamylase-type starch-debranching enzymes (DBE), although how these proteins affect glucan polymer assembly is not understood. Various allelic mutations in the maize (Zea mays) gene sugary1 (su1), which codes for an isoamylase-type DBE, condition dis...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.125.3.1406
更新日期:2001-03-01 00:00:00
abstract::Investigation on the biosynthesis of S-methyl-L-cysteine in radish leaves has shown that it is formed by the methylation of cysteine. This conclusion is based on: A) the relatively high recovery of radioactivity in methylcysteine sulfoxide after the administration of cysteine or methyl-labeled methionine to radish lea...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.41.8.1301
更新日期:1966-10-01 00:00:00
abstract::The treatment of a biological system with small molecules to specifically perturb cellular functions is commonly referred to as chemical biology. Small molecules are used commercially as drugs, herbicides, and fungicides in different systems, but in recent years they are increasingly exploited as tools for basic resea...
journal_title:Plant physiology
pub_type: 杂志文章,评审
doi:10.1104/pp.16.01805
更新日期:2017-05-01 00:00:00
abstract::At concentrations of up to 300 mug/ml both d-threo- and l-threo-chloramphenicol act as energy transfer inhibitors in spinach chloroplasts, in that they inhibit both phosphorylation and phosphorylating electron transport, without affecting the nonphosphorylating electron transport which occurs either in the absence of ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.53.5.691
更新日期:1974-05-01 00:00:00
abstract::The effect of the proline analog azetidine-2-carboxylic acid (Aze) on the induction and the regulation of heat-shock (HS) mRNA accumulation and heat-shock protein (HSP) synthesis in soybean (Glycine max) seedlings was studied. Treatment with Aze elicited an HS-like response at the normal growth temperature, 28[deg]C, ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.1.241
更新日期:1996-01-01 00:00:00