Abstract:
:Phycoerythrin, a photosynthetic accessory pigment, was isolated from Porphyridium cruentum and examined by electron microscopy and disc gel electrophoresis. The absorption monomer, with maxima at 563, 545, and a shoulder at 500 nm, has a molecular weight of about 300,000. With phosphotungstic acid staining it appears as a tightly structured disc-shaped particle possessing a mean diameter of 101 +/- 0.4A and height of 54 +/- 0.7A. The absorption maxima remained the same in glutaraldehyde fixed material, and in dimer and trimer aggregates. Treatment with sodium dodecyl sulfate caused a breakdown into smaller units accompanied by a loss of the 563 nm peak. It is suggested that this absorption monomer is the in vivo functional species and comparable to the phycocyanin hexamer, but structurally distinguishable at the ultrastructural level. It has been calculated that about 35 phycobiliprotein molecules can be contained within each phycobilisome. There are 1.4 x 10(3) chlorophyll molecules per phycobilisome, but not contained within it.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Gantt Edoi
10.1104/pp.44.11.1629subject
Has Abstractpub_date
1969-11-01 00:00:00pages
1629-38issue
11eissn
0032-0889issn
1532-2548journal_volume
44pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全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::Calreticulin (CRT) is a calcium-binding protein in the endoplasmic reticulum (ER) with an established role as a molecular chaper-one. An additional function in signal transduction, specifically in calcium distribution, is suggested but not proven. We have analyzed the expression pattern of Arabidopsis thaliana CRTs fo...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.1.29
更新日期:1997-05-01 00:00:00
abstract::Rootless soybean (Glycine max) seedlings were used as a test system to examine the action of auxin on chromatin-directed RNA synthesis. Chromatin from the basal tissue of rootless seedlings (both control and auxin-treated) had RNA synthetic capacity similar to that of chromatin from comparably treated intact seedlings...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.47.5.606
更新日期:1971-05-01 00:00:00
abstract::Changes in the physiology of plant leaves are correlated with enhanced freezing tolerance and include accumulation of compatible solutes, changes in membrane composition and behavior, and altered gene expression. Some of these changes are required for enhanced freezing tolerance, whereas others are merely consequences...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.120.2.391
更新日期:1999-06-01 00:00:00
abstract::The Arabidopsis (Arabidopsis thaliana) gene MEKK1 encodes a mitogen-activated protein kinase kinase kinase that has been implicated in the activation of the map kinases MPK3 and MPK6 in response to the flagellin elicitor peptide flg22. In this study, analysis of plants carrying T-DNA knockout alleles indicated that ME...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.091389
更新日期:2007-02-01 00:00:00
abstract::In this article, we demonstrate the connection between intracellular iron storage and oxidative stress response in cyanobacteria. Iron is essential for the survival of all organisms. However, the redox properties that make iron a valuable cofactor also lead to oxidative interactions, resulting in the formation of harm...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.141853
更新日期:2009-08-01 00:00:00
abstract::A ureidoglycolate-degrading activity was analyzed in different organs of chickpea (Cicer arietinum). Activity was detected in all the tissues analyzed, but highest levels of specific activity were found in pods, from which it has been purified and characterized. This is the first ureidoglycolate-degrading activity tha...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.125.2.828
更新日期:2001-02-01 00:00:00
abstract::Compounds with planar triple ring systems such as acridine orange, 9-amino acridine, 9-amino-1,2,3,4-tetrahydroacridine (tacrine), 6,9-diamino-2-ethoxyacridine lactate monohydrate (DE-acridine), 6-chloro-9-(3'-diethylamino-2'-hydroxypropylamino) -2-methoxyacridine.2 HCl (CDM-acridine), quinacrine, 6-chloro-9-(4'-dieth...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.47.3.346
更新日期:1971-03-01 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::Enhancement phenomena in photosynthesis of the diatom Phaeodactylum tricornutum Lewin were studied by means of a Haxo oxygen electrode and 2 monochromatic light beams. It was necessary to correct for a minor non-linearity in rate oxygen evolution vs. intensity similar to that reported for Chlorella. Action spectra on ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.43.12.1991
更新日期:1968-12-01 00:00:00
abstract::Streptomycin and chloramphenicol inhibit the development of the photosynthetic apparatus and enhance anthocyanin synthesis in tomato (Lycopersican esculentum, cv. Beefsteak) and red cabbage (Brassica oleracea, cv. Red Acre) seedlings. The two antibiotics do not affect the basic features of light-dependent anthocyanin ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.58.2.214
更新日期:1976-08-01 00:00:00
abstract::Changes in the levels of the four subunits of the mitochondrial enzyme glycine decarboxylase (EC 2.1.2.10) have been investigated during development in the 8 day old primary leaf of wheat (Triticum aestivum L.). Proteins were extracted from wheat leaf sections between the basal meristem and 8.5 centimeters. The indivi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.96.3.952
更新日期:1991-07-01 00:00:00
abstract::Senescence is a phase of leaf ontogeny marked by declining photosynthetic activity that, in soybean (Glycine max [L.] Merr.), is paralleled by a decline in chloroplast function. Soybean leaves have different patterns of decline in photosynthetic capacity and chloroplast function associated with nodal position and sink...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.101.1.105
更新日期:1993-01-01 00:00:00
abstract::In the last few years, much attention has been given to the role of proteins that accumulate during water deficit. In this work, we analyzed the electrophoretic patterns of basic protein extracts, enriched for a number of cell-wall proteins, from bean (Phaseolus vulgaris L.) seedlings and 21-d-old plants subjected to ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.4.1119
更新日期:1995-04-01 00:00:00
abstract::Like many microalgae, Chlamydomonas reinhardtii forms lipid droplets rich in triacylglycerols when nutrient deprived. To begin studying the mechanisms underlying this process, nitrogen (N) deprivation was used to induce triacylglycerol accumulation and changes in developmental programs such as gametogenesis. Comparati...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.165159
更新日期:2010-12-01 00:00:00
abstract::The possible involvement of nucleic acid and protein synthesis in light-regulated chlorophyll formation by rapidly greening leaves has been studied.Removing leaves from illumination during the phase of rapid greening results in a reduction in the rate of pigment synthesis; cessation occurs within 2 to 4 hours. Etiolat...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.42.6.774
更新日期:1967-06-01 00:00:00
abstract::Many eukaryotes have from one to three heat shock factors (Hsfs), but plants have more than 20 Hsfs, designated class A, B, and C. Class A Hsfs are activators of transcription, but details of the roles of individual Hsfs have not been fully characterized. We show here that Arabidopsis (Arabidopsis thaliana) HsfB1 and ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.179036
更新日期:2011-11-01 00:00:00
abstract::Young cabbage plants (Brassica oleracea L. var. capitata) that were exposed to an atmosphere at 50% relative humidity transpired freely and accumulated significant quantities of (45)Ca in the leaves. Plants that were enclosed by plastic bags to stop transpiration from all leaves exhibited guttation with the developmen...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.60.6.854
更新日期:1977-12-01 00:00:00
abstract::Insertional mutagenesis using transfer DNA or transposable elements, which is an important tool in functional genomics and is well established in several crops, has not been developed in potato (Solanum tuberosum). Here, we report the application of the tobacco (Nicotiana tabacum) Tnt1 retrotransposon as an insertiona...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.221903
更新日期:2013-09-01 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::The profile of endogenous cytokinins in a genetic tumor line of tobacco, namely, Nicotiana glauca (Grah.) x Nicotiana langsdorffii (Weinm.), following 1 to 10 weeks of growth on solid medium was determined by radioimmunoassay. (3)H-labeled cytokinins of high specific activity were added during tissue extraction to cor...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.3.1084
更新日期:1990-11-01 00:00:00
abstract::In this study the interplay of mitochondria and peroxisomes in photorespiration was simulated in a reconstituted system of isolated mitochondria and peroxisomes from spinach (Spinacia oleracea L.) leaves. The mitochondria oxidizing glycine produced serine, which was reduced in the peroxisomes to glycerate. The require...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.116.4.1333
更新日期:1998-04-01 00:00:00
abstract::CYP73A1 catalyzes cinnamic acid hydroxylation, a reaction essential for the synthesis of lignin monomers and most phenolic compounds in higher plants. The native CYP73A1, initially isolated from Jerusalem artichoke (Helianthus tuberosus), was engineered to simplify purification from recombinant yeast and improve solub...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.020305
更新日期:2003-11-01 00:00:00
abstract::ADP-glucose pyrophosphorylase was partially purified from Chlorella vulgaris 11h. 3-Phosphoglycerate activated the enzyme by lowering the Michaelis constant for glucose-1-phosphate (from 0.97 to 0.36 millimolar in the presence of 2 millimolar phosphoglycerate) and ATP (from 0.23 to 0.10 millimolar), as well as increas...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.78.3.601
更新日期:1985-07-01 00:00:00
abstract::Wild-type Arabidopsis (Arabidopsis thaliana L. Heynh.) roots growing on a tilted surface of impenetrable hard-agar media adopt a wave-like pattern and tend to skew to the right of the gravity vector (when viewed from the back of the plate through the medium). Reversible root-tip rotation often accompanies the clockwis...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.059774
更新日期:2005-06-01 00:00:00
abstract::The cis-regulatory regions on DNA serve as binding sites for proteins such as transcription factors and RNA polymerase. The combinatorial interaction of these proteins plays a crucial role in transcription initiation, which is an important point of control in the regulation of gene expression. We present here an analy...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.167809
更新日期:2011-07-01 00:00:00
abstract::Effects of O(2) and some respiratory inhibitors on the induction and release of bud dormancy were examined with the aerial tubers of different ages of Begonia evansiana Andr. Oxygen was needed not only for tuber sprouting but also during the chilling process at 2 to 5 C to break tuber dormancy. If the mature tubers we...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.51.3.504
更新日期:1973-03-01 00:00:00
abstract::Several genes encoding putative glutathione peroxidase have been isolated from a variety of plants, all of which show the highest homology to the phospholipid hydroperoxide isoform. Several observations suggest that the proteins are involved in biotic and abiotic stress responses. Previous studies on the regulation of...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.041921
更新日期:2004-07-01 00:00:00
abstract::Previous evidence has suggested that SPA1 is a signal transduction component that appears to require phytochrome A for function in seedling photomorphogenesis. Using digital image analysis, we examined the time course of growth inhibition induced by red light in spa1 mutants to test the interpretation that SPA1 functi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.126.3.1291
更新日期:2001-07-01 00:00:00
abstract::Legume-rhizobia symbiosis is a time-limited process due to the onset of senescence, which results in the degradation of host plant cells and symbiosomes. A number of transcription factors, proteases, and functional genes have been associated with nodule senescence; however, whether other proteases or transcription fac...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.00574
更新日期:2019-12-01 00:00:00