Abstract:
:The light intensity-dependent transition to state 1 of dark-adapted anaerobic state 2 Chlamydomonas reinhardtii cells is stimulated by oxygen and by other electron acceptors for photosystem I, such as oxaloacetate and methylviologen. This suggests that the transition to state 1 requires the oxidation of the intersystem chain by photosystem I photochemistry. On the other hand, the mere oxidation in the dark of the chain-by addition of O2-leads only to a slow and incomplete transition. The light-driven stimulation by O2 of the state 1 transition is saturated at an O2 concentration of 15 to 20 microm, definitely higher than that of respiration. We suggest that this may represent the affinity for oxygen of the Mehler reaction, a conclusion that is confirmed by the observations that mitochondrial respiration is apparently not involved in modulating state 2-to-state 1 transition. The catalysis of the state 2-to-state 1 transition upon illumination of anaerobically adapted algae might represent, therefore, a relevant physiological role of this process in C. reinhardtii.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Forti G,Caldiroli Gdoi
10.1104/pp.104.048256subject
Has Abstractpub_date
2005-02-01 00:00:00pages
492-9issue
2eissn
0032-0889issn
1532-2548pii
pp.104.048256journal_volume
137pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::The shapes of leaves are dynamic, changing over evolutionary time between species, within a single plant producing different shaped leaves at successive nodes, during the development of a single leaf as it allometrically expands, and in response to the environment. Notably, strong correlations between the dissection a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.01825
更新日期:2016-03-01 00:00:00
abstract::Geranylgeranyl diphosphate (GGPP) is the precursor for the biosynthesis of gibberellins, carotenoids, chlorophylls, isoprenoid quinones, and geranylgeranylated proteins in plants. There is a small gene family for GGPP synthases encoding five isozymes and one related protein in Arabidopsis, and all homologs have a puta...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.122.4.1045
更新日期:2000-04-01 00:00:00
abstract::Phaseolus vulgaris mitochondria incubated in sucrose swell rapidly upon the addition of phospholipase A. Bovine serum albumin inhibits the swelling. The release of free fatty acids as a result of phospholipase A action on the mitochondria is detected only in the presence of bovine serum albumin, which promotes the hyd...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.45.3.322
更新日期:1970-03-01 00:00:00
abstract::In many flowering plants, xyloglucan is a major component of primary cell walls, where it plays an important role in growth regulation. Xyloglucan can be degraded by a suite of exoglycosidases that remove specific sugars. In this work, we show that the xyloglucan backbone, formed by (1→4)-linked β-d-glucopyranosyl res...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.01713
更新日期:2017-02-01 00:00:00
abstract::The biosynthetic pathway to n-heptane was investigated by examining the effect of the [beta]-keto acyl-acyl carrier protein synthase inhibitor (2R,3S)-2,3-epoxy-4-oxo-7E,10E-dodecadienamide (cerulenin), a thiol reagent ([beta]-mercaptoethanol), and an aldehydetrapping reagent (hydroxylamine) on the biosynthesis of n-[...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.4.1263
更新日期:1996-08-01 00:00:00
abstract::The ALCR/alcA (alc) two-component, ethanol-inducible gene expression system provides stringent control of transgene expression in genetically modified plants. ALCR is an ethanol-activated transcription factor that can drive expression from the ALCR-responsive promoter (alcA). However, the alc system has been shown to ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.059659
更新日期:2005-07-01 00:00:00
abstract::This work tested one aspect of the relations between membrane permeability and fruit ripening. Membrane permeability was measured as [(3)H]water efflux rate from preloaded fruit pericarp disks. Different stages of fruit development were compared between two tomato (Lycopersicon esculentum Mill) strains: the normal Rut...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.6.813
更新日期:1975-12-01 00:00:00
abstract::In Ankistrodesmus braunii, in the absence of CO(2), i.e. in CO(2)-free air or N(2), photosynthetic nitrate uptake and nitrate reduction were inhibited, especially at low pH. Under such conditions, glucose stimulated nitrate uptake and reduction to almost the same level in the pH range between 6 and 8.5. CO(2) at 0.03%...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.59.1.18
更新日期:1977-01-01 00:00:00
abstract::To gain some insight into the mechanism of plant programmed cell death, certain features of cytochrome c (cyt c) release were investigated in heat-shocked tobacco (Nicotiana tabacum) Bright-Yellow 2 cells in the 2- to 6-h time range. We found that 2 h after heat shock, cyt c is released from intact mitochondria into t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.078683
更新日期:2006-05-01 00:00:00
abstract::Heat shock factors (HSFs) are transcriptional regulators of the heat shock response. The major target of HSFs are the genes encoding heat shock proteins (HSPs), which are known to have a protective function that counteracts cytotoxic effects. To identify other HSF target genes, which may be important determinants for ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.042606
更新日期:2004-10-01 00:00:00
abstract::A novel flavonol-specific sulfotransferase was partially purified from the shoot tips of Flaveria bidentis var. Angustifolia O.K. (Asteraceae) by chromatography on 3'-phosphoadenosine 5'-phosphate-agarose affinity column and chromatofocusing on Mono P. The latter step resulted in the separation of two isoforms, both o...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.95.4.1254
更新日期:1991-04-01 00:00:00
abstract::Chloroplast NADPH-thioredoxin reductase (NTRC) belongs to the thioredoxin systems that control crucial metabolic and regulatory pathways in plants. Here, by characterization of T-DNA insertion lines of NTRC gene, we uncover a novel connection between chloroplast thiol redox regulation and the control of photoperiodic ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.133777
更新日期:2009-03-01 00:00:00
abstract::p-Hydroxybenzoic acid (pHBA) is the major monomer in liquid crystal polymers. In this study, the Escherichia coli ubiC gene that codes for chorismate pyruvate-lyase (CPL) was integrated into the tobacco (Nicotiana tabacum) chloroplast genome under the control of the light-regulated psbA 5' untranslated region. CPL cat...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.050054
更新日期:2004-12-01 00:00:00
abstract::We initially compared lipid peroxidation profiles in tobacco (Nicotiana tabacum) leaves during different cell death events. An upstream oxylipin assay was used to discriminate reactive oxygen species (ROS)-mediated lipid peroxidation from 9- and 13-lipoxygenase (LOX)-dependent lipid peroxidation. Free radical-mediated...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.059907
更新日期:2005-07-01 00:00:00
abstract::As a result of the phenylpropanoid pathway, many Brassicaceae produce considerable amounts of soluble hydroxycinnamate conjugates, mainly sinapate esters. From oilseed rape (Brassica napus), we cloned two orthologs of the Arabidopsis (Arabidopsis thaliana) gene reduced epidermal fluorescence1 (REF1) encoding a conifer...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.215491
更新日期:2013-04-01 00:00:00
abstract::We have cloned and characterized a cDNA encoding a maize (Zea mays L.) heat shock protein (HSP), HSP26. The mRNA of HSP26 is present as a single mRNA species of 1.1 kilobase pairs in size and is detectable when maize seedlings are treated at 40 degrees C but not at 28 degrees C. Accumulation of HSP26 mRNA was detected...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.93.4.1321
更新日期:1990-08-01 00:00:00
abstract::Nearly all polysaccharides in plant cell walls are O-acetylated, including the various pectic polysaccharides and the hemicelluloses xylan, mannan, and xyloglucan. However, the enzymes involved in the polysaccharide acetylation have not been identified. While the role of polysaccharide acetylation in vivo is unclear, ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.168989
更新日期:2011-03-01 00:00:00
abstract::The patterns of nitrate reductase activity (NRA) in the leaves (in vivo assay) and root nodule nitrogenase activity (C(2)H(2) reduction) were investigated throughout the season in field-grown Phaseolus vulgaris plants.Maximal NRA (per g fresh weight) occurred at early stages of leaf development but total activity (per...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.63.3.421
更新日期:1979-03-01 00:00:00
abstract::In this study, we develop a mechanistic understanding of how temperature affects growth and photosynthesis in 10 geographically and physiologically diverse strains of Synechococcus spp. We found that Synechococcus spp. are able to regulate photochemistry over a range of temperatures by using state transitions and alte...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.221937
更新日期:2013-10-01 00:00:00
abstract::The growth of transgenic tomato (Lycopersicon esculentum) plants that express in their apoplast yeast invertase under the control of the cauliflower mosaic virus 35S promoter is severely inhibited. The higher the level of invertase, the greater the inhibition of growth. A second phenotypic characteristic of these tran...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.95.2.420
更新日期:1991-02-01 00:00:00
abstract::In Chlamydomonas reinhardtii, a light-induced oxidative stress shifts the glutathione pool toward its oxidized form, resulting in a translational arrest of the large subunit (LSU) of Rubisco. We show here that the translational arrest of LSU is tightly coordinated with cessation of Rubisco assembly, and both processes...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.056341
更新日期:2005-02-01 00:00:00
abstract::The 2- to 4-fold rise in particle-bound beta-glucan synthetase (uridine diphosphate-glucose: beta-1, 4-glucan glucosyltransferase) activity that can be induced by indoleacetic acid in pea stem tissue is not prevented by concentrations of actinomycin D or cycloheximide that inhibit growth and macromolecule synthesis. T...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.51.4.609
更新日期:1973-04-01 00:00:00
abstract::The lipid and protein composition of the plasma membrane isolated from mulberry (Morus bombycis Koidz.) bark cells was analyzed throughout the cold acclimation period under natural and controlled environment conditions. There was a significant increase in phospholipids and unsaturation of their fatty acids during cold...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.76.1.257
更新日期:1984-09-01 00:00:00
abstract::Analysis of Sorghum bicolor bloomless (bm) mutants with altered epicuticular wax (EW) structure uncovered a mutation affecting both EW and cuticle deposition. The cuticle of mutant bm-22 was about 60% thinner and approximately one-fifth the weight of the wild-type parent P954035 (WT-P954035) cuticles. Reduced cuticle ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.4.1239
更新日期:1994-08-01 00:00:00
abstract::The purification and characterization of a pectic polymer, rhamnogalacturonan I, present in the primary cell walls of dicots is described. Rhamnogalacturonan I accounts for approximately 7% of the mass of the walls isolated from suspension-cultured sycamore cells. As purified, rhamnogalacturonan I has a molecular weig...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.66.6.1128
更新日期:1980-12-01 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::A new ultraviolet (UV)-A/B absorbing pigment with maxima at 312 and 330 nanometers from the cosmopolitan terrestrial cyanobacterium Nostoc commune is described. The pigment is found in high amounts (up to 10% of dry weight) in colonies grown under solar UV radiation but only in low concentrations in laboratory culture...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.88.4.1055
更新日期:1988-12-01 00:00:00
abstract::The effect of ozone was studied on the peroxidase activity from various compartments of Sedum album leaves (epidermis, intercellular fluid, residual cell material, and total cell material). The greatest increase following a 2-hour ozone exposure (0.4 microliters O(3) per liter) was observed in extracellular peroxidase...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.74.4.846
更新日期:1984-04-01 00:00:00
abstract::The nucleotide-binding site (NBS)-Leucine-rich repeat (LRR) gene family accounts for the largest number of known disease resistance genes, and is one of the largest gene families in plant genomes. We have identified 333 nonredundant NBS-LRRs in the current Medicago truncatula draft genome (Mt1.0), likely representing ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.104588
更新日期:2008-01-01 00:00:00
abstract::Amyloplasts of starchy tissues such as those of maize (Zea mays L.) function in the synthesis and accumulation of starch during kernel development. ADP-glucose pyrophosphorylase (AGPase) is known to be located in chloroplasts, and for many years it was generally accepted that AGPase was also localized in amyloplasts o...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.117.4.1235
更新日期:1998-08-01 00:00:00