Abstract:
:The accumulation of delta-aminolevulinic acid and activities of delta-aminolevulinic acid dehydrase were examined in the marine diatom, Skeletonema costatum, grown in the presence of levulinic acid. Levulinic acid concentrations greater than 10 mm affect growth and morphology, and inhibit chlorophyll synthesis. The algae recover from the effects of levulinic acid after 48 hours of exposure. The recovery is characterized by increased cellular cholorphyll content, decreased delta-aminolevulinic acid accumulation, decreased 3-(3,4-dichlorophenyl)-1, 1-dimethylurea-enhanced in vivo fluorescence, and the induction of a levulinic acid-activated delta-aminolevulinic acid dehydrase which does not follow Michaelis-Menten kinetics. The data indicate that levulinic acid blocks may be ineffective in vivo, and that delta-aminolevulinic acid is metabolized to amino and dicarboxylic acids. delta-Aminolevulinic acid dehydrase activities are used to estimate the capacity for chlorophyll synthesis. Results suggest this diatom may be capable of rapid chlorophyll turnover, which would allow the plant to light-shade adapt on the time scales appropriate to vertical mixing rates in the sea.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Owens TG,Riper DM,Falkowski PGdoi
10.1104/pp.62.4.516subject
Has Abstractpub_date
1978-10-01 00:00:00pages
516-21issue
4eissn
0032-0889issn
1532-2548journal_volume
62pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Cytidine deoxyriboside (Cdr), uridine deoxyriboside (Udr), and guanosine deoxyriboside (Gdr), induce quantitative bleaching of the fronds of Lemna minor (duckweed) during growth in continuous light on photoheterotrophic medium. Cdr-induced bleaching is not accompanied by a reduction in frond multiplication rate, but U...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.61.6.989
更新日期:1978-06-01 00:00:00
abstract::In green plants, the large bioelectric changes that photosynthetically active light stimulates make it difficult to observe electrical potential changes related to phytochrome photoconversion. As a first step towards distinguishing between photosynthetic and phytochrome effects, we showed that red light enhances far-r...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.73.3.671
更新日期:1983-11-01 00:00:00
abstract::DNA polymerase zeta catalytic subunit REV3 is known to play an important role in the repair of DNA damage induced by cross-linking and methylating agents. Here, we demonstrate that in Arabidopsis (Arabidopsis thaliana), the basic polymerase activity of REV3 is essential for resistance protection against these differen...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.00806
更新日期:2015-12-01 00:00:00
abstract::Maize (Zea mays) leaves provide a useful system to study how proximal/distal patterning is established because of the distinct tissues found in the distal blade and the proximal sheath. Several mutants disrupt this pattern, including the dominant knotted1-like homeobox (knox) mutants. knox genes encode homeodomain pro...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.145920
更新日期:2009-12-01 00:00:00
abstract::We have described the modulation of four auxin-regulated genes during the growth cycle of suspension-cultured tobacco (Nicotiana tabacum [L.] var White Burley) cells. The genes were transiently expressed 2 to 8 h after transfer of stationary phase cells to fresh medium, during the transition from the quiescent phase o...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.102.2.513
更新日期:1993-06-01 00:00:00
abstract::The auxin indole-3-acetic acid (IAA) has been shown to promote the biosynthesis of the active gibberellin (GA(1)) in shoots of pea (Pisum sativum). We used northern analysis to investigate the timing of IAA-induced changes in transcript levels of PsGA3ox1 (Mendel's LE), PsGA2ox1, PsGA2ox2, and PsGA20ox1, key genes for...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.010587
更新日期:2002-12-01 00:00:00
abstract::DNA and histone methylation coregulate heterochromatin formation and gene silencing in animals and plants. To identify factors involved in maintaining gene silencing, we conducted a forward genetic screen for mutants that release the silenced transgene Pro35S::NEOMYCIN PHOSPHOTRANSFERASE II in the transgenic Arabidops...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.18.00183
更新日期:2018-06-01 00:00:00
abstract::When Ribulose- 1,5-bisphosphate carboxylase/oxygenase was purified from spinach leaves (Spinacia oleracea) using precipitation with polyethylene glycol and MgCl(2) followed by DEAE cellulose chromatography, 75% of phosphoribulokinase and 7% of phosphoriboisomerase activities copurified with ribulose- 1,5-bisphosphate ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.89.1.368
更新日期:1989-01-01 00:00:00
abstract::We studied the ethylene-insensitive, hypernodulating mutant, sickle (skl), to investigate the interaction of ethylene with auxin transport during root nodulation in Medicago truncatula. Grafting experiments demonstrated that hypernodulation in skl is root controlled. Long distance transport of auxin from shoot to root...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.080093
更新日期:2006-09-01 00:00:00
abstract::Reciprocal grafts, and applications of gibberellin (GA) and indoleacetic acid (IAA) were used to localize the site of control for stem elongation in cucumber (Cucumis sativus L.). Dwarf and tall plants were reciprocally grafted to determine influence of stems and roots on stem elongation. At 21 days there were no sign...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.53.6.942
更新日期:1974-06-01 00:00:00
abstract::Plants contain several genes encoding thioredoxins (Trxs), small proteins involved in the regulation of the activity of many enzymes through dithiol-disulfide exchange. In addition to chloroplastic and cytoplasmic Trx systems, plant mitochondria contain a reduced nicotinamide adenine dinucleotide phosphate-dependent T...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.138073
更新日期:2009-06-01 00:00:00
abstract::Translocation profiles along the path were studied using a modified flap-feeding technique for the simultaneous application of THO and (14)C-sucrose. A re-evaluation of a mathematical model for phloem transport with reversible lateral exchange of tracer along the path indicates that lower apparent velocities for THO a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.49.5.690
更新日期:1972-05-01 00:00:00
abstract::Photosynthetically active bundle sheath strands capable of assimilating up to 8 micromoles CO(2) per milligram chlorophyll per hour have been isolated from fully expanded leaves of Zea mays L. Mesophyll cell contamination of the preparations was negligible, as evidenced by light and electron microscopy and by a high r...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.51.4.787
更新日期:1973-04-01 00:00:00
abstract::Microsomal membranes from growing tissue of pea (Pisum sativum L.) epicotyls were incubated with the substrate UDP-[14C]galactose (Gal) with or without tamarind seed xyloglucan (XG) as a potential galactosyl acceptor. Added tamarind seed XG enhanced incorporation of [14C]Gal into high-molecular-weight products (eluted...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.1.245
更新日期:1997-05-01 00:00:00
abstract::How genes change their expression patterns over time is still poorly understood. Here, by conducting expression, functional, bioinformatic, and evolutionary analyses, we demonstrate that the differences between the Arabidopsis (Arabidopsis thaliana) APETALA1 (AP1) and CAULIFLOWER (CAL) duplicate genes in the time, spa...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.00320
更新日期:2016-06-01 00:00:00
abstract::Phosphatidylinositol 3-kinase has been reported to be important for normal plant growth. To characterize the role of the enzyme further, we attempted to isolate Arabidopsis (Arabidopsis thaliana) plants that do not express the gene, but we could not recover homozygous mutant plants. The progeny of VPS34/vps34 heterozy...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.121590
更新日期:2008-08-01 00:00:00
abstract::An experiment was conducted to investigate the reduction of endogenous NO(3) (-), which had been taken up by plants in darkness, during the course of the subsequent light period. Vegetative, nonnodulated soybean plants (Glycine max [L]. Merrill, ;Ransom') were exposed to 1.0 millimolar (15)NO(3) (-) for 12 hours in da...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.84.4.1421
更新日期:1987-08-01 00:00:00
abstract::When soybean Glycine max var Wayne seedlings are shifted from a normal growth temperature of 28 degrees C up to 40 degrees C (heat shock or HS), there is a dramatic change in protein synthesis. A new set of proteins known as heat shock proteins (HSPs) is produced and normal protein synthesis is greatly reduced. A brie...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.74.1.152
更新日期:1984-01-01 00:00:00
abstract::Fucoid algae release gametes into seawater following an inductive light period (potentiation), and gamete expulsion from potentiated receptacles of Pelvetia compressa began about 2 min after a light-to-dark transition. Agitation of the medium reversed potentiation, with an exponential time course completed in about 3 ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.118.1.305
更新日期:1998-09-01 00:00:00
abstract::The rate of adaptation of high CO(2) (5% v/v CO(2) in air)-grown Anabaena to a low level of CO(2) (0.05% v/v in air) was determined as a function of O(2) concentration. Exposure of cells to low (2.6%) O(2) concentration resulted in an extended lag in the adaptation to low CO(2) concentration. The rate of adaptation fo...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.71.1.208
更新日期:1983-01-01 00:00:00
abstract::Intact spinach and barley chloroplast normally incorporate (14)C-acetate into palmitate and oleate as the major (14)C fatty acids. Addition of nitrite markedly altered the relative patterns of the products with the appearance of stearate, a drop in oleate, but no marked change in palmitate. Arsenite greatly increased ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.49.4.497
更新日期:1972-04-01 00:00:00
abstract::Following dark adaptation, the response to irradiance of chlorophyll (Chl) fluorescence, the light-induced absorbance change around 820 nm (to measure reaction center Chl of photosystem I [PSI] P-700 oxidation), and CO2 fixation were examined in pea (Pisum sativum L.) leaves under a range of conditions. Initially, P-7...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.2.649
更新日期:1993-10-01 00:00:00
abstract::The knotted1 (kn1) homeobox (knox) gene family was first identified through gain-of-function dominant mutants in maize (Zea mays). Class I knox members are expressed in meristems but excluded from leaves. In maize, a loss-of-function phenotype has only been characterized for kn1. To assess the function of another knox...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.228791
更新日期:2014-01-01 00:00:00
abstract::Cis-Natural Antisense Transcripts (cis-NATs), which overlap protein coding genes and are transcribed from the opposite DNA strand, constitute an important group of noncoding RNAs. Whereas several examples of cis-NATs regulating the expression of their cognate sense gene are known, most cis-NATs function by altering th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.00043
更新日期:2019-05-01 00:00:00
abstract::Long terminal repeat retrotransposons (LTR-RTs) are prevalent in plant genomes. The identification of LTR-RTs is critical for achieving high-quality gene annotation. Based on the well-conserved structure, multiple programs were developed for the de novo identification of LTR-RTs; however, these programs are associated...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.01310
更新日期:2018-02-01 00:00:00
abstract::Relationships between net plant CO(2) exchange rate (CER) and canopy development were examined in ;jubilee' tomato over the initial 4 weeks of vegetative growth. A comparison was made between two plant groups that were alternatively exposed to 200 or 800 microeinsteins per square meter per second midday irradiation to...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.80.3.711
更新日期:1986-03-01 00:00:00
abstract::Chimeric constructs containing the promoter and upstream sequences of Ha hsp17.6 G1, a small heat shock protein gene, reproduced in transgenic tobacco (Nicotiana tabacum) its unique seed-specific expression patterns previously reported in sunflower. These constructs did not respond to heat shock, but were expressed wi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.121.3.723
更新日期:1999-11-01 00:00:00
abstract::Thylakoids are the chloroplast internal membrane systems that house light-harvesting and electron transport reactions. Despite the important functions and well-studied constituents of thylakoids, the molecular mechanism of their development remains largely elusive. A recent genetic study has demonstrated that plastidi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.151977
更新日期:2010-03-01 00:00:00
abstract::The levels of starch, soluble sugars, protein, and enzymes involved in starch metabolism-alpha-amylase, beta-amylase, phosphorylase, Q-enzyme, R-enzyme, and starch synthetase -were assayed in dehulled developing rice grains (Oryzasativa L., variety IR8). Phosphorylase, Q-enzyme, and R-enzyme had peak activities 10 day...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.46.3.429
更新日期:1970-09-01 00:00:00
abstract::Lack of sufficient water is a major limiting factor to crop production worldwide, and the development of drought-tolerant germplasm is needed to improve crop productivity. The phytohormone ethylene modulates plant growth and development as well as plant response to abiotic stress. Recent research has shown that modify...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.00780
更新日期:2015-09-01 00:00:00