Abstract:
:Effects of the herbicide safeners N,N-diallyl-2,2-dichloroacetamide and 4-dichloroacetyl-3,4-dihydro-3-methyl-2H-1,4-benzooxazin (CGA 154281) on the contents in cysteine and glutathione, on the assimilation of (35)SO(4) (2-), and on the enzymes of assimilatory sulfate reduction were analyzed in roots and primary leaves of maize (Zea mays) seedlings. Both safeners induced an increase in cysteine and glutathione. In labeling experiments using (35)SO(4) (2-), roots of plants cultivated in the presence of safeners contained an increased level of radioactivity in glutathione and cysteine as compared with controls. A significant increase in uptake of sulfate was only detected in the presence of CGA 154281. One millimolar N,N-diallyl-2,2-dichloroacetamide applied to the roots for 6 days increased the activity of adenosine 5'-phosphosulfate sulfotransferase about 20- and threefold in the roots and leaves, respectively, compared with controls. CGA 154281 at 10 micromolar caused a sevenfold increase of this enzyme activity in the roots, but did not affect it significantly in the leaves. A significant increase in ATP-sulfurylase (EC 2.7.7.4) activity was only detected in the roots cultivated in the presence of 10 micromolar CGA 154281. Both safeners had no effect on the activity of sulfite reductase (EC 1.8.7.1) and O-acetyl-l-serine sulfhydrylase (EC 4.2.99.8). The herbicide metolachlor alone or combined with the safeners induced levels of adenosine 5'-phosphosulfate sulfotransferase, which were higher than those of the appropriate controls. Taken together these results show that the herbicide safeners increased both the level of adenosine 5'-phosphosulfate sulfotransferase activity and of the thiols cysteine and glutathione. This indicates that these safeners may be involved in eliminating the previously proposed regulatory mechanism, in which increased concentrations of thiols regulate assimilatory sulfate reduction by decreasing the activities of the enzymes involved.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Farago S,Brunold Cdoi
10.1104/pp.94.4.1808subject
Has Abstractpub_date
1990-12-01 00:00:00pages
1808-12issue
4eissn
0032-0889issn
1532-2548journal_volume
94pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::ZRP4, a 1.4-kb mRNA that preferentially accumulates in roots of young Zea mays L. plants, was identified by isolation of the corresponding cDNA clone. Genomic Southern analysis indicates that the zrp4 gene is represented once in the corn genome. The deduced ZRP4 polypeptide of 39,558 D is rich in leucine, serine, and ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.102.3.1001
更新日期:1993-07-01 00:00:00
abstract::Major storage reserves of Arabidopsis (Arabidopsis thaliana) seeds are triacylglycerols (seed oils) and proteins. Seed oil content is severely reduced for the regulatory mutant wrinkled1 (wri1-1; At3g54320) and for a double mutant in two isoforms of plastidic pyruvate kinase (pkpbeta(1)pkpalpha; At5g52920 and At3g2296...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.144121
更新日期:2009-11-01 00:00:00
abstract::Dunaliella bardawil, a beta-carotene-accumulating halotolerant alga, has been analyzed for the effect of various growth conditions on its pigment content, and compared with Dunaliella salina, a beta-carotene nonaccumulating species. In D. bardawil, increasing light intensity and light period or inhibiting growth by va...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.72.3.593
更新日期:1983-07-01 00:00:00
abstract::We used Phytotyping4D to investigate the contribution of clock and light signaling to the diurnal regulation of rosette expansion growth and leaf movement in Arabidopsis (Arabidopsis thaliana). Wild-type plants and clock mutants with a short (lhycca1) and long (prr7prr9) period were analyzed in a T24 cycle and in T-cy...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.00503
更新日期:2017-07-01 00:00:00
abstract::As regulators of gene expression in multicellular organisms, microRNAs (miRNAs) are crucial for growth and development. Although a plethora of factors involved in their biogenesis and action in Arabidopsis (Arabidopsis thaliana) has been described, these processes and their fine-tuning are not fully understood. Here, ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.01313
更新日期:2018-01-01 00:00:00
abstract::The effect of varying sequences of red and far red light on sterol biosynthesis in etiolated seedlings of Digitalis purpurea L. was examined. Red light caused a marked increase in the amounts of free and glycosidic sterols and a small decrease in esterified sterols during the first 4 hours after illumination. Far red ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.62.6.1000
更新日期:1978-12-01 00:00:00
abstract::Sycamore (Acer pseudoplatanus L.) cell suspension cultures (strain OS) require 2,4-dichlorophenoxyacetic acid (2,4-D) in their culture medium for normal growth. If the 2,4-D is omitted, rates of cell division are dramatically reduced and cell lysis may occur. Despite this ;auxin requirement,' it has been shown by gas ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.71.4.927
更新日期:1983-04-01 00:00:00
abstract::Suc transporters (SUTs) play a key role in the allocation and partitioning of photosynthetically fixed carbon in plants. While a function could be assigned to many members of the SUT family, almost no information is available on their regulation. Here, the transcriptional regulation of SUTs in response to various envi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.01088
更新日期:2018-01-01 00:00:00
abstract::Angiosperms requires light for multiple aspects of chloroplast development, including chlorophyll synthesis and induction of expression of the mRNAs encoding the major polypeptides of the light-harvesting complex of photosystem II (Lhcb genes). In contrast, many conifers, including pines, firs, and spruces, can accumu...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.2.627
更新日期:1996-06-01 00:00:00
abstract::A method has been developed to measure concentrations of CO(2) in gases rapidly. A gas sample is injected into a flowing carrier gas that passes through an infrared CO(2) analyzer. A strip chart recorded peak response is obtained which is proportional to the CO(2) concentration. A resolution of better than 2 microlite...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.62.6.924
更新日期:1978-12-01 00:00:00
abstract::In air largely freed from CO(2), senescence of isolated oat (Avena sativa cv Victory) seedling leaves is no longer prevented by white light; instead, the leaves lose both chlorophyll and protein as rapidly as in the dark. Senescence in light is also accelerated in pure O(2), but it is greatly delayed in N(2); 100% N(2...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.71.1.67
更新日期:1983-01-01 00:00:00
abstract::The red light requirement for positive gravitropism in roots of corn (Zea mays cv "Merit") provides an entry for examining the participation of calcium in gravitropism. Applications of calcium chelators inhibit the light response. Calcium channel blockers (verapamil, lanthanum) can also inhibit the light response, a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.86.4.1276
更新日期:1988-01-01 00:00:00
abstract::Breeding crops with the quality of broad-spectrum disease resistance using genetic resources is one of the principal goals of crop improvement. However, the molecular mechanism of broad-spectrum resistance remains largely unknown. Here, we show that GH3-2, encoding an indole-3-acetic acid (IAA)-amido synthetase, media...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.163774
更新日期:2011-01-01 00:00:00
abstract::Electron transport activity at the cell surface of intact oat seedlings (Avena sativa L. cv Garry) was examined by measuring the oxidation and/or reduction of agents in the medium bathing the roots. Oxidation of NADH with or without added electron acceptors and reduction of ferricyanide by an endogenous electron donor...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.76.2.386
更新日期:1984-10-01 00:00:00
abstract::The glyoxysomal enzymes isocitrate lyase and catalase have been isolated from etiolated cucumber (Cucumis sativus) cotyledons. The enzymes co-purified through polyethyleneimine precipitation and (NH(4))(2)SO(4) precipitation, and were resolved by gel filtration on Sepharose 6B followed by chromatography on diethylamin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.62.5.754
更新日期:1978-11-01 00:00:00
abstract::Brassinosteroids (BRs) play important roles throughout plant development. Although many genes have been identified that are involved in BR biosynthesis, genetic approaches in Arabidopsis have led to the identification of only one gene, BRI1, that encodes a membrane receptor for BRs. To expand our knowledge of the mole...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.127.1.14
更新日期:2001-09-01 00:00:00
abstract::Truncated transcription factor-like proteins called microProteins (miPs) can modulate transcription factor activities, thereby increasing transcriptional regulatory complexity. To understand their prevalence, evolution, and function, we predicted over 400 genes that encode putative miPs from Arabidopsis (Arabidopsis t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.235903
更新日期:2014-05-01 00:00:00
abstract::The class of cell wall polysaccharides that undergoes the most extensive modification during tomato (Lycopersicon esculentum) fruit ripening is pectin. De-esterification of the polygalacturonic acid backbone by pectin methylesterase facilitates the depolymerization of pectins by polygalacturonase II (PGII). To investi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.1.373
更新日期:1997-05-01 00:00:00
abstract::A circadian rhythm of O(2) evolution has been found in Euglena gracilis, Klebs strain Z. The rhythm persists for at least 5 days in constant dim light and temperature, but damps out in constant bright light. The phase of this rhythm can be shifted by a pulse of bright light and the period length is not changed over a ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.61.2.150
更新日期:1978-02-01 00:00:00
abstract::Spinach leaf chloroplasts isolated in isotonic media (330 millimolar sorbitol, -1.0 megapascals osmotic potential) had optimum rates of photosynthesis when assayed at -1.0 megapascals. When chloroplasts were isolated in hypertonic media (720 millimolar sorbitol, -2.0 megapascals osmotic potential) the optimum osmotic ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.79.4.996
更新日期:1985-12-01 00:00:00
abstract::Plasmalemma redox activity in the diatom Thalassiosira is competitively inhibited by antiserum prepared against algal nitrate reductase (NR), and fluorescent labeling experiments reveal the binding of NR antiserum to the cell surface. Furthermore, the external electron acceptor Cu bathophenanthroline disulfonate cause...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.87.1.143
更新日期:1988-05-01 00:00:00
abstract::Soybean (Glycine max L. Merr.) germplasm, isogenic except for loci controlling male sterility (ms(1)), was utilized to study the effects of reproductive development on certain aspects of photosynthesis. Plants were sampled at various times between flowering (77 days after transplanting) and maturity (147 days after tr...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.84.4.1357
更新日期:1987-08-01 00:00:00
abstract::When petunia (Petunia hybrida Vilm, cv Rosy Morn) cells are cultured in the presence of 2 [mu]M antimycin A (AA), respiration proceeds mainly via the cyanide-resistant pathway. Cyanide-resistant respiratory rates were higher in mitochondria from AA cells than in control mitochondria. Compared with control cells, an in...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.115.2.617
更新日期:1997-10-01 00:00:00
abstract::Chloroplast ribosomes, which originated from cyanobacteria, comprise a large subunit (50S) and a small subunit (30S) containing ribosomal RNAs (rRNAs) and various ribosomal proteins. Genes for many chloroplast ribosomal proteins, as well as proteins with auxiliary roles in ribosome biogenesis or functioning, reside in...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.18.00602
更新日期:2018-08-01 00:00:00
abstract::We report here a method for the isolation of high specific activity phosphoglycerate kinase (EC 2.7.2.3) from chloroplasts. The enzyme has been purified over 200-fold from pea (Pisum sativum L.) stromal extracts to apparent homogeneity with 23% recovery. Negative cooperativity is observed with the two enzyme phosphogl...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.1.291
更新日期:1990-09-01 00:00:00
abstract::Cool season crops face intermittent drought. Exposure to drought and other abiotic stresses is known to increase tolerance of the plants against subsequent exposure to such stresses. Storage of environmental signals is also proposed. Preexposure to a dehydration shock improved adaptive response during subsequent dehyd...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.043141
更新日期:2004-07-01 00:00:00
abstract::The pyruvate dehydrogenase complex has been purified 76-fold, to a specific activity of 0.6 mumoles per minute per milligram protein, beginning with isolated pea (Pisum sativum L. var Little Marvel) chloroplasts. Purification was accomplished by rate zonal sedimentation, polyethyleneglycol precipitation, and ethyl-aga...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.77.3.571
更新日期:1985-03-01 00:00:00
abstract::When cyclic photophosphorylation is inhibited in Chlorella vulgaris cells by carbonylcyanide-trifluoromethoxy phenylhy-drazone, photosynthetic CO(2)-fixation under anaerobic conditions exhibits a distinct lag. Under the same conditions, the light-dependent formation of ribulose diphosphate shows also this lag. It is c...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.51.5.825
更新日期:1973-05-01 00:00:00
abstract::Debladed midribs of citrus leaves showed the typical delay of abscission in response to indoleacetic acid (IAA), and the typical acceleration of abscission in response to gibberellic acid (GA). Interaction experiments with these 2 hormones indicated that the balance of the 2 hormones may be more important in regulatin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.43.3.351
更新日期:1968-03-01 00:00:00
abstract::The LOSS OF APOMEIOSIS (LOA) locus is one of two dominant loci known to control apomixis in the eudicot Hieracium praealtum. LOA stimulates the differentiation of somatic aposporous initial cells after the initiation of meiosis in ovules. Aposporous initial cells undergo nuclear proliferation close to sexual megaspore...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.181164
更新日期:2011-11-01 00:00:00