Abstract:
:Detergent preparations isolated from thylakoids of the red alga Porphyridium cruentum, in a sucrose, phosphate, citrate, magnesium chloride medium consist of phycobilisomes and possess high rates of photosystem II activity. Characterization of these particles shows that the O(2)-evolving activity is stable for several hours and the pH optimum is about 6.5 to 7.2. Response of the system to light, electron donors and acceptors, and inhibitors verify that the observed activity, measured both as O(2) evolution and 2,6-dichlorophenol-indophenol reduction, is due to photosystem II. Furthermore, photosystem II is functionally coupled to the phycobilisome in this preparation since green light, absorbed by phycobilisomes of P. cruentum, is effective in promoting both O(2) evolution and 2,6-dichlorophenol-indophenol reduction. Photosystem II activity declines when light with wavelengths shorter than 665 nm is removed. Both 3-(3,4-dichlorophenyl)-1,1-dimethylurea and atrazine inhibit photosystem II activity in this preparation, indicating that the herbicide binding site is a component of the photosystem II-phycobilisome particle.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Chereskin BM,Clement-Metral JD,Gantt Edoi
10.1104/pp.77.3.626subject
Has Abstractpub_date
1985-03-01 00:00:00pages
626-9issue
3eissn
0032-0889issn
1532-2548journal_volume
77pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Three fractions (male germ unit [MGU]-rich, cytoplasmic-particulate and water-soluble proteins) were isolated from pollen of Plumbago zeylanica L. Proteins were extracted using a phenol procedure and polypeptide patterns were compared on one- and two-dimensional polyacrylamide gels. The MGU-rich fraction contains the ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.88.3.764
更新日期:1988-11-01 00:00:00
abstract::Enzymes dissociated from corn (hybrid B73 x Mo17) seedling cell walls by solutions of high ionic strength possess the capacity to degrade Avena caryopsis glucan. Inhibitor studies disclosed that both endo- and exoenzyme activities were involved and that the reaction sequence paralleled the autolytic solubilization of ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.65.5.768
更新日期:1980-05-01 00:00:00
abstract::Phytochrome that has been photoinduced to pellet by irradiation of intact oat (cv. Garry) shoots and recovered from a pellet obtained by centrifugation of crude extracts exhibits modified behavior when compared to soluble phytochrome isolated from shoots that had never been irradiated. This modified behavior includes ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.68.4.789
更新日期:1981-10-01 00:00:00
abstract::The temporal and spatial expression patterns of three 1-aminocyclopropane-1-carboxylate (ACC) synthase genes were investigated in pollinated orchid (Phalaenopsis spp.) flowers. Pollination signals initiate a cascade of development events in multiple floral organs, including the induction of ethylene biosynthesis, whic...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.116.1.419
更新日期:1998-01-01 00:00:00
abstract::The plant hormone jasmonic acid (JA) plays a pivotal role in plant-insect interactions. Herbivore attack usually elicits dramatic increases in JA concentrations, which in turn activate the accumulation of metabolites that function as defenses against herbivores. Although almost all enzymes involved in the biosynthesis...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.199018
更新日期:2012-08-01 00:00:00
abstract::The effect of external CO2 concentration on the expression of carbonic anhydrase (CA) and ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) was examined in pea (Pisum sativum cv Little Marvel) leaves. Enzyme activities and their transcript levels were reduced in plants grown at 1000 [mu]L/L CO2 compared with p...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.2.569
更新日期:1996-10-01 00:00:00
abstract::Nitric oxide (NO) regulates multiple developmental events and stress responses in plants. A major biologically active species of NO is S-nitrosoglutathione (GSNO), which is irreversibly degraded by GSNO reductase (GSNOR). The major physiological effect of NO is protein S-nitrosylation, a redox-based posttranslational ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.00026
更新日期:2015-04-01 00:00:00
abstract::To monitor the expression of T-DNA-tagged plant genes in vivo, a collection of 20,261 transgenic lines of Arabidopsis (Columbia-0) were generated with the promoter trap vector pTluc, which carries a promoterless firefly luc (luciferase) reporter gene linked to the right T-DNA border. By detection of bioluminescence in...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.027151
更新日期:2004-01-01 00:00:00
abstract::The plant hormone jasmonate (JA) promotes resistance to biotic stress by stimulating the degradation of JASMONATE ZIM-DOMAIN (JAZ) proteins, which relieves repression on MYC transcription factors that execute defense programs. JA-triggered depletion of JAZ proteins in Arabidopsis (Arabidopsis thaliana) is also associa...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.01335
更新日期:2020-06-01 00:00:00
abstract::As a step to understanding how the photoreceptor phytochrome acts to change the transcription of specific nuclear genes in Lemna gibba, we wish to compare promoter elements involved in negative regulation by phytochrome with those involved in positive regulation. We have isolated three genes negatively regulated by ph...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.101.3.915
更新日期:1993-03-01 00:00:00
abstract::To dissect the expression of the psbB gene cluster of the Chlamydomonas reinhardtii chloroplast genome and to assess the role of the photosystem II H-phosphoprotein (PSII-H) in the biogenesis and/or stabilization of PSII, an aadA gene cassette conferring spectinomycin resistance was employed for mutagenesis. Disruptio...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.4.1359
更新日期:1997-04-01 00:00:00
abstract::A Sclerotinia enzyme preparation with predominant exo-beta-(1-->3)-glucanase activity has the capacity to mediate the formation of tetrasaccharide from 3-O-beta-cellobiosyl-d-glucose or cellotriose, and a pentasaccharide from 3-O-beta-cellotriosyl-d-glucose or cellotetraose. Transglucosylation is not observed when the...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.64.2.193
更新日期:1979-08-01 00:00:00
abstract::The effects of high light stress on chloroplast ultrastructure and protein and mRNA composition were investigated in carotenoid-deficient peas (Pisum sativum, L.). In low light, the thylakoid membrane polypeptide pattern was altered, with several prominent chlorophyll-binding proteins present in diminished amounts. Th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.4.1663
更新日期:1990-12-01 00:00:00
abstract::ADP-glucose was found to be the primary sugar nucleotide used for glycogen synthesis by Synechococcus 6301. ADP-glucose pyrophosphorylase was partially purified 12-fold from this blue-green bacterium. The enzyme was activated 8- to 25-fold by glycerate 3-phosphate. Fructose 6-phosphate, fructose 1,6-bisphosphate, 5'-a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.58.6.753
更新日期:1976-12-01 00:00:00
abstract::Nitrate reductase (NR) is the first enzyme in nitrate assimilation, a critical process for plant survival. The regulation of NR gene expression is complex, involving both internal and external factors. Of these, nitrate induction of NR gene expression has been studied most extensively and is well conserved among bacte...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.2.477
更新日期:1994-10-01 00:00:00
abstract::The responses of redroot pigweed (Amaranthus retroflexus L.) seeds to nine ethylene concentrations between 0.5 and 50 microliters per liter were assessed at different temperatures and water potentials and in either continuous white light or darkness. Under all experimental treatments, the probit-transformed percentage...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.65.6.1149
更新日期:1980-06-01 00:00:00
abstract::Establishment of symbiosis between legumes and rhizobia requires bacterial Nod factors (NFs). The concentration of these lipochitooligosaccharides in the rhizosphere is influenced by plant enzymes. NFs induce on pea (Pisum sativum) a particular extracellular NF hydrolase that releases lipodisaccharides from NFs from S...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.061705
更新日期:2005-10-01 00:00:00
abstract::Chlorogenic acids (CGAs) are a group of phenolic secondary metabolites produced by certain plant species and an important component of coffee (Coffea spp.). The CGAs have been implicated in biotic and abiotic stress responses, while the related shikimate esters are key intermediates for lignin biosynthesis. Here, two ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.202051
更新日期:2012-09-01 00:00:00
abstract::Induction of secreted acid phosphatase (APase) is a universal response of higher plants to phosphate (Pi) limitation. These enzymes are thought to scavenge Pi from organophosphate compounds in the rhizosphere and thus to increase Pi availability to plants when Pi is deficient. The tight association of secreted APase w...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.183723
更新日期:2011-11-01 00:00:00
abstract::Theoretical analysis of the CO(2) assimilation and water loss by single leaves suggests that the water use efficiency of C(4) species decreases as stomatal resistance increases. To confirm this hypothesis for a complete maize crop, results from computer simulations and a field experiment were compiled for varying stom...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.2.245
更新日期:1975-08-01 00:00:00
abstract::Phosphatidylcholine (PC) is a major membrane phospholipid and a precursor for major signaling molecules. Understanding its synthesis is important for improving plant growth, nutritional value, and resistance to stress. PC synthesis is complex, involving several interconnected pathways, one of which proceeds from serin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.18.00457
更新日期:2018-08-01 00:00:00
abstract::The effect of Co(2+) on ethylene production by mung bean (Phaseolus aureus Roxb.) and by apple tissues was studied. Co(2+), depending on concentrations applied, effectively inhibited ethylene production by both tissues. It also strongly inhibited the ethylene production induced by IAA, kinetin, IAA plus kinetin, Ca(2+...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.58.1.114
更新日期:1976-07-01 00:00:00
abstract::Novel cyanogenic plants have been generated by the simultaneous expression of the two multifunctional sorghum (Sorghum bicolor [L.] Moench) cytochrome P450 enzymes CYP79A1 and CYP71E1 in tobacco (Nicotiana tabacum cv Xanthi) and Arabidopsis under the regulation of the constitutive 35S promoter. CYP79A1 and CYP71E1 cat...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.123.4.1437
更新日期:2000-08-01 00:00:00
abstract::Recent structure-function analysis of heterologously expressed K+-selective inward-rectifying channels (KIRCs) from plants has revealed that external protons can have opposite effects on different members of the same gene family. An important question is how the diverse response of KIRCs to apoplastic pH is reflected ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.120.1.331
更新日期:1999-05-01 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::delta-Aminolevulinic acid (ALA), a key precursor of the tetrapyrroles heme and chlorophyll, is capable of being synthesized by two different routes in cells of the unicellular green alga Euglena gracilis: from the intact carbon skeleton of glutamate, and via the condensation of glycine and succinyl CoA, mediated by th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.70.1.219
更新日期:1982-07-01 00:00:00
abstract::We have characterized two related cDNAs (RCI2A and RCI2B) corresponding to genes from Arabidopsis thaliana, the expression of which is transiently induced by low, nonfreezing temperatures. RCI2A and RCI2B encode small (54 amino acids), highly hydrophobic proteins that bear two potential transmembrane domains. They sho...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.115.2.569
更新日期:1997-10-01 00:00:00
abstract::Brassinosteroids (BRs) are a class of steroid hormones regulating multiple aspects of plant growth, development, and adaptation. Compared with extensive studies in Arabidopsis (Arabidopsis thaliana), the mechanism of BR signaling in rice (Oryza sativa) is less understood. Here, we identified OsWRKY53, a transcription ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.00946
更新日期:2017-11-01 00:00:00
abstract::The free amino acid and ammonia pools of Azolla caroliniana were analyzed by quantitative column chromatography on columns capable of separating all of the nitrogenous constituents normally found in physiological fluids. Comparisons were made of plants containing symbiotic algae and grown on nitrogen-free media, plant...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.58.6.798
更新日期:1976-12-01 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