Abstract:
:The wilty tomato mutant, flacca, and the control variety, Rheinlands Ruhm, were compared with regard to the endogenous activity and concentration of auxin- and abscisic acid-like substances during ontogeny. The mutant wilts fast under water deficit because of inability to close its stomata. Symptoms characteristic of excessive auxin are evident in the developing mutant. Among these symptoms are branch and leaf epinasty, excessive rooting along the stem, and increased apical dominance. By using a leucine-incorporation assay, spray of whole plants with 2,4-dichlorophenoxyacetic acid, and wheat coleoptile bioassay, indications were found of an excess of activity and concentration of auxin-like substances in shoots of young and mature mutant plants. The wheat coleoptile bioassay also revealed a much lower amount of substances with abscisic acid-like activity in the mutant compared with the normal plant. In contrast to the appearance during ontogeny of morphological symptoms characteristic of auxin excess in the mutant, the absolute amount of auxin-like substances and their activity in incorporation of leucine decreased with age. A parallel decrease of the concentration and activity of auxin-like compounds was also found in the normal plant. The concentration of abscisic acid-like substances increased with age in both genotypes. The disagreement between the increasing morphological symptoms and the decrease of auxin-like activity and concentration is discussed, together with the possibility of a causal relationship between auxin-and abscisic acid-like activity and stomatal behavior.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Tal M,Imber Ddoi
10.1104/pp.46.3.373subject
Has Abstractpub_date
1970-09-01 00:00:00pages
373-6issue
3eissn
0032-0889issn
1532-2548journal_volume
46pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Detergent-solubilized plasma membrane proteins from pea (Pisum sativum L.) stem tissue were separated by isoelectric focusing (IEF) using a Bio-Rad Rotofor cell, with the goal of identifying protein(s) involved in beta-1,3-glucan synthase (GS-II) activity. Ordinary IEF procedures result in membrane protein precipitati...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.95.4.1302
更新日期:1991-04-01 00:00:00
abstract::The Golgi apparatus consists of stacked cisternae filled with enzymes that facilitate the sequential and highly controlled modification of glycans from proteins that transit through the organelle. Although the glycan processing pathways have been extensively studied, the underlying mechanisms that concentrate Golgi-re...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.00310
更新日期:2019-06-01 00:00:00
abstract::It was previously reported that the hypernodulating soybean (Glycine max [L.] Merr.) mutants, derived from the cultivar Williams, had higher root concentration of isoflavonoid compounds (daidzein, genistein, and coumestrol) than did Williams at 9 to 12 days after inoculation with Bradyrhizobium japonicum. These compou...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.96.4.1277
更新日期:1991-08-01 00:00:00
abstract::The soluble proteins of C(3) and C(4) mesophyll chloroplasts and C(4) bundle sheath extracts have been analyzed by gel electrophoresis for fraction I protein. Gel scans of soluble protein from C(4) bundle sheath extracts and C(3) mesophyll chloroplasts showed typical fraction I protein peaks that could be identified b...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.5.730
更新日期:1976-05-01 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::Gravitropic asymmetry of auxin was observed in hypocotyls of tomato (Lycopersicon esculentum Mill.) soon after horizontal placement: the ratio of apically supplied [3H]IAA collected from the lower sides to that from the upper sides was about 1.4 between 5 and 10 minutes. This was adequately early to account for the ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.89.2.652
更新日期:1989-01-01 00:00:00
abstract::Thermostability of the photosynthetic apparatus of abscisic acid (ABA)-treated seedlings of barley (Hordeum vulgare) was studied by light-scattering and by fluorescence measurements of isolated chloroplasts. ABA treatment markedly decreased heat damage of the chloroplast ultrastructure; an exogenous ABA concentration ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.98.4.1228
更新日期:1992-04-01 00:00:00
abstract::Amylase was found in high activity (193 international units per milligram protein) in the tap root of alfalfa (Medicago sativa L. cv. Sonora). The activity was separated by gel filtration chromatography into two fractions with molecular weights of 65,700 (heavy amylase) and 41,700 (light amylase). Activity staining of...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.69.5.1096
更新日期:1982-05-01 00:00:00
abstract::Light- and oxygen-induced changes of cytochromes f, b(563), and b(559) and ferredoxin-flavoprotein were studied by a double beam spectrophotometer with combinations of inhibitors and lowered temperatures in the whole cells of the pale green mutant of Chlamydomonas reinhardi (ATCC 18302). At room temperature, the stead...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.46.1.163
更新日期:1970-07-01 00:00:00
abstract::We have studied the effects of ATP and ADP on the oxidation of malate by coupled and uncoupled mitochondria prepared from etiolated hypocotyls of mung bean (Vigna radiata L.).In coupled mitochondria, ATP (1 millimolar) increased pyruvate production and decreased oxaloacetate formation without altering the rate of oxyg...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.76.1.21
更新日期:1984-09-01 00:00:00
abstract::Western blots of soluble protein from wheat, rice, and corn showed that ADPglucose pyrophosphorylase subunits have a size of 50 kilodaltons from endosperm tissue and 43 and 46 kilodaltons from leaf. Antisera to ADPglucose pyrophosphorylase precipitated in vitro translation products of 73 and 76 kilodaltons when leaf p...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.81.2.642
更新日期:1986-06-01 00:00:00
abstract::Mutant strain 1073 of Lemna perpusilla is concluded to be blocked between plastoquinone and cytochrome f in the photosynthetic electron transport system. The location of the block is based on the following observations of activities in chloroplasts isolated from the mutant and wild-type plants. (a) Relative to wild ty...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.4.577
更新日期:1976-04-01 00:00:00
abstract::Stomatal movement, which regulates gas exchange in plants, is controlled by a variety of environmental factors, including biotic and abiotic stresses. The stress hormone abscisic acid (ABA) initiates a signaling cascade, which leads to increased H2O2 and Ca2+ levels and F-actin reorganization, but the mechanism of, an...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.01010
更新日期:2020-02-01 00:00:00
abstract::The lv-1 mutant of pea (Pisum sativum L.) is deficient in responses regulated by phytochrome B (phyB) in other species but has normal levels of spectrally active phyB. We have characterized three further lv mutants (lv-2, lv-3, and lv-4), which are all elongated under red (R) and white light but are indistinguishable ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.2.525
更新日期:1995-06-01 00:00:00
abstract::Malformin and ethylene stimulate abscission of the primary leaves of Phaseolus aureus Roxb. in the dark, and abscission stimulation by both compounds is inhibited by indeleacetic acid and CO(2). Ethylene production by malformin-treated buds is stimulated within 4 hours. and up to 8 days, after treatment. Malformin-ind...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.43.1.76
更新日期:1968-01-01 00:00:00
abstract::White light (25 watts per square meter) induced an increase in plasma membrane K(+)-channel activity and a 30- to 70-millivolt transient membrane depolarization (completed in 2-3 minutes) in Arabidopsis thaliana leaf mesophyll cells. Transport characteristics of three types of ion channels in the plasma membrane were ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.99.1.96
更新日期:1992-05-01 00:00:00
abstract::Microarrays measure the expression of large numbers of genes simultaneously and can be used to delve into interaction networks involving many genes at a time. However, it is often difficult to decide to what extent knowledge about the expression of genes gleaned in one model organism can be transferred to other specie...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.109603
更新日期:2008-02-01 00:00:00
abstract::Most cells experiencing heat stress reprogram their translational machinery to favor the synthesis of heat-stress proteins. Translation of other transcripts is almost completely repressed, but most untranslated messengers are not degraded. In contrast to yeast, Drosophila melanogaster, and HeLa cells, plant cells stor...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.120.1.23
更新日期:1999-05-01 00:00:00
abstract::Cyanobacteria have efficient carbon concentration mechanisms and suppress photorespiration in response to inorganic carbon (Ci) limitation. We studied intracellular Ci limitation in the slow-growing CO2/HCO3 (-)-uptake mutant ΔndhD3 (for NADH dehydrogenase subunit D3)/ndhD4 (for NADH dehydrogenase subunit D4)/cmpA (fo...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.01289
更新日期:2015-11-01 00:00:00
abstract::The interaction between noncoding endogenous target mimicry (eTM) and its corresponding microRNA (miRNA) is a newly discovered regulatory mechanism and plays pivotal roles in various biological processes in plants. Tobacco (Nicotiana tabacum) is a model plant for studying secondary metabolite alkaloids, of which nicot...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.00649
更新日期:2015-10-01 00:00:00
abstract::The plastid genome is highly conserved among plant species, suggesting that alterations of its structure would have dramatic impacts on plant fitness. Nevertheless, little is known about the direct consequences of plastid genome instability. Recently, it was reported that the plastid Whirly proteins WHY1 and WHY3 and ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.223560
更新日期:2013-10-01 00:00:00
abstract::Sucrose gradient profiles of polyribosomes from the coleoptilar node region of seedlings of Zea mays L. were obtained without pelleting and redispersion of the particles. Water stress caused a shift of ribosomes from the polymeric to the monomeric form, starting about 30 minutes after stress initiation and when the wa...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.46.2.281
更新日期:1970-08-01 00:00:00
abstract::While the importance of cell type specificity in plant adaptive responses is widely accepted, only a limited number of studies have addressed this issue at the functional level. We have combined electrophysiological, imaging, and biochemical techniques to reveal the physiological mechanisms conferring higher sensitivi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.01347
更新日期:2016-12-01 00:00:00
abstract::A pyridoxal 5'-phosphate (PLP)-dependent enzyme, 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (S-adenosyl-L-Met methylthioadenosine-lyase, EC 4.4.1.14), catalyzes the conversion of S-adenosyl-L-methionine (AdoMet) to ACC. A tomato ACC synthase isozyme (LE-ACS2) with a deletion of 46 amino acids at the C termin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.121.3.913
更新日期:1999-11-01 00:00:00
abstract::Soybean (Glycine max L. Merr.) is a versatile and important agronomic crop grown worldwide. Each year millions of dollars of potential yield revenues are lost due to a root rot disease caused by the oomycete Phytophthora sojae (Kaufmann & Gerdemann). Since the root is the primary site of infection by this organism, we...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.091090
更新日期:2007-05-01 00:00:00
abstract::Salinity is an environmental stress that causes decline in crop yield. Avicennia officinalis and other mangroves have adaptations such as ultrafiltration at the roots aided by apoplastic cell wall barriers to thrive in saline conditions. We studied a cytochrome P450 gene from A. officinalis, AoCYP94B1, and its putativ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.20.01054
更新日期:2020-12-01 00:00:00
abstract::The light dependence of D1 phosphorylation is unique to higher plants, being constitutive in cyanobacteria and algae. In a photoautotrophic higher plant, Spirodela oligorrhiza, grown in greenhouse conditions under natural diurnal cycles of solar irradiation, the ratio of phosphorylated versus total D1 protein (D1-P in...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.013441
更新日期:2002-12-01 00:00:00
abstract::The requirements for activation of ribulose 1,5-bisphosphate carboxylase/oxygenase (rubisco) were investigated in leaves of Arabidopsis wild-type and a mutant incapable of light activating rubisco in vivo. Upon illumination with saturating light intensities, the activation state of rubisco increased 2-fold in the wild...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.80.3.655
更新日期:1986-03-01 00:00:00
abstract::The occurrence of fungicidal, elemental S is well documented in certain specialized prokaryotes, but has rarely been detected in eukaryotes. Elemental S was first identified in this laboratory as a novel phytoalexin in the xylem of resistant genotypes of Theobroma cacao, after infection by the vascular, fungal pathoge...
journal_title:Plant physiology
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::A peptide (molecular mass 50 kilodaltons) that is immunologically related to tobacco osmotin was detected in cells of the halophyte Atriplex nummularia. This protein was constitutively expressed in both unadapted and NaCl-adapted cells. A predominant osmotin-like peptide (molecular mass 24 kilodaltons) was also found ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.99.1.329
更新日期:1992-05-01 00:00:00