Abstract:
:Despite its important functions in plant physiology and defense, the membrane transport mechanism of salicylic acid (SA) is poorly documented due to the general assumption that SA is taken up by plant cells via the ion trap mechanism. Using Ricinus communis seedlings and modeling tools (ACD LogD and Vega ZZ softwares), we show that phloem accumulation of SA and hydroxylated analogs is completely uncorrelated with the physicochemical parameters suitable for diffusion (number of hydrogen bond donors, polar surface area, and, especially, LogD values at apoplastic pHs and Delta LogD between apoplast and phloem sap pH values). These and other data (such as accumulation in phloem sap of the poorly permeant dissociated form of monohalogen derivatives from apoplast and inhibition of SA transport by the thiol reagent p-chloromercuribenzenesulfonic acid [pCMBS]) lead to the following conclusions. As in intestinal cells, SA transport in Ricinus involves a pH-dependent carrier system sensitive to pCMBS; this carrier can translocate monohalogen analogs in the anionic form; the efficiency of phloem transport of hydroxylated benzoic acid derivatives is tightly dependent on the position of the hydroxyl group on the aromatic ring (SA corresponds to the optimal position) but moderately affected by halogen addition in position 5, which is known to increase plant defense. Furthermore, combining time-course experiments and pCMBS used as a tool, we give information about the localization of the SA carrier. SA uptake by epidermal cells (i.e. the step preceding the symplastic transport to veins) insensitive to pCMBS occurs via the ion-trap mechanism, whereas apoplastic vein loading involves a carrier-mediated mechanism (which is targeted by pCMBS) in addition to diffusion.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Rocher F,Chollet JF,Legros S,Jousse C,Lemoine R,Faucher M,Bush DR,Bonnemain JLdoi
10.1104/pp.109.140095subject
Has Abstractpub_date
2009-08-01 00:00:00pages
2081-91issue
4eissn
0032-0889issn
1532-2548pii
pp.109.140095journal_volume
150pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Storage compound accumulation during seed development prepares the next generation of plants for survival. Therefore, processes involved in the regulation and synthesis of storage compound accumulation during seed development bear relevance to germination and seedling establishment. The wrinkled1 (wri1) mutant of Arab...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.079574
更新日期:2006-06-01 00:00:00
abstract::The factors that mediate specific responses to the plant hormone ethylene are not fully defined. In particular, it is not known how signaling at the receptor complex can control distinct subsets of ethylene responses. Mutations at the Green-ripe (Gr) and reversion to ethylene sensitivity1 (rte1) loci, which encode hom...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.205476
更新日期:2012-12-01 00:00:00
abstract::The saturating photon flux density (400 to 700 nanometers) for induction of flowering of the long day plant Anagallis arvensis L. was 1,900 micromoles per square meter per second (6,000 foot-candles) when an 8-hour daylength was extended to 24 hours by a single period of supplementary irradiation. The saturating photo...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.62.5.802
更新日期:1978-11-01 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::To assess the role of the vacuole in responses to hyperosmotic and hypo-osmotic stress, the electrical properties of the vacuole were measured in situ. A double-barrel micropipette was inserted into the vacuole for voltage clamping. A second double-barrel micropipette was inserted into the cytoplasm to provide a virtu...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.031427
更新日期:2004-01-01 00:00:00
abstract::Drought is an important environmental factor affecting the growth and production of agricultural crops and fruits worldwide, including apple (Malus domestica). Heat shock factors (HSFs) have well-documented functions in stress responses, but their roles in flavonoid synthesis and the flavonoid-mediated drought respons...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.20.01106
更新日期:2020-11-01 00:00:00
abstract::Comparative genomics provides insight into the evolutionary dynamics that shape discrete sequences as well as whole genomes. To advance comparative genomics within the Brassicaceae, we have end sequenced 23,136 medium-sized insert clones from Boechera stricta, a wild relative of Arabidopsis (Arabidopsis thaliana). A s...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.073981
更新日期:2006-04-01 00:00:00
abstract::In the interaction between Arabidopsis (Arabidopsis thaliana) and the generalist herbivorous insect Spodoptera littoralis, little is known about early events in defense signaling and their link to downstream phytohormone pathways. S. littoralis oral secretions induced both Ca²⁺ and phytohormone elevation in Arabidopsi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.198150
更新日期:2012-07-01 00:00:00
abstract::An NADPH-dependent NO2--reducing system was reconstituted in vitro using ferredoxin (Fd) NADP+ oxidoreductase (FNR), Fd, and nitrite reductase (NiR) from the green alga Chlamydomonas reinhardtii. NO2- reduction was dependent on all protein components and was operated under either aerobic or anaerobic conditions. NO2- ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.117.1.303
更新日期:1998-05-01 00:00:00
abstract::The Dof (DNA binding with one finger) transcriptional activator rice (Oryza sativa) prolamin box binding factor (RPBF), which is involved in gene regulation of rice seed storage proteins, has been isolated from rice cDNA expressed sequence tag clones containing the conserved Dof. RPBF is found as a single gene per hap...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.082826
更新日期:2006-08-01 00:00:00
abstract::The rate of malic acid consumption in the Crassulacean acid metabolism (CAM) plant Kalanchoë daigremontiana Hamet et Perrier was found to be more rapid than the rate of photosynthetic oxygen evolution under all levels of irradiation by white light. This accounts for the accumulation of carbon dioxide in CAM tissues in...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.69.3.568
更新日期:1982-03-01 00:00:00
abstract::Rice grains (Oryza sativa L.) from three varieties and three pairs of lines with different protein content were collected at 4-day intervals from 4 to 32 days after flowering. The samples were analyzed for protein, free amino nitrogen, ribonucleic acid, protease activity, and ribonuclease activity. In addition, the ca...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.46.5.743
更新日期:1970-11-01 00:00:00
abstract::Extracts from various parts of Phaseolus vulgaris L. var. Pinto plants were found to exhibit cytokinin activity with the highest levels present in extracts of the fruit tissue. To separate the cytokinins present in the fruit, extracts were chromatographed in several solvent systems. Bioassays of chromatograms indicate...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.48.3.320
更新日期:1971-09-01 00:00:00
abstract::We investigated the synthesis and turnover of cell wall polysaccharides of the flax (Linum usitatissimum L.) plant during development of the phloem fibers. One-month-old flax plants were exposed to a 40-min pulse with 14CO2 followed by 8-h, 24-h, and 1-month periods of chase with ambient CO2, and radioactivity in cell...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.2.723
更新日期:1997-06-01 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::The possible role of the octadecanoid signaling pathway with jasmonic acid (JA) as the central component in defense-gene regulation of pathogen-attacked rice was studied. Rice (Oryza sativa L.) seedlings were treated with JA or inoculated with the rice blast fungus Magnaporthe grisea (Hebert) Barr., and gene-expressio...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.1.79
更新日期:1997-05-01 00:00:00
abstract::Radioactive gibberellin A(5) ((3)H-GA(5)) was synthesized from gibberellic acid. When it was applied to dwarf peas grown in the dark, an average of 3% was converted to another acid gibberellin within 48 hours. The biological activity of the metabolite did not account for the response to applied GA(5). GA(5) is therefo...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.45.1.56
更新日期:1970-01-01 00:00:00
abstract::The ontogeny of seed structure and the accumulation of seed storage substances is the result of a determinant genetic program. Using RNA interference, the synthesis of soybean (Glycine max) glycinin and conglycinin storage proteins has been suppressed. The storage protein knockdown (SP-) seeds are overtly identical to...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.173807
更新日期:2011-05-01 00:00:00
abstract::Calcium flux in sunflower (Helianthus annuus L. cv Russian mammoth) hypocotyl was measured with a Ca(2+) electrode as the increase or decrease in Ca(2+) in an aqueous solution (10 micromolar CaCl(2)) in contact with either the basal or apical end of 20 millimeter segments. Ca(2+) efflux was significantly higher at the...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.81.2.408
更新日期:1986-06-01 00:00:00
abstract::Inactivation of the nonessential ω-subunit of the RNA polymerase core in the ΔrpoZ strain of the model cyanobacterium Synechocystis sp. PCC 6803 leads to a unique high-CO2-sensitive phenotype. Supplementing air in the growth chamber with 30 mL L-1 (3%) CO2 accelerated the growth rate of the control strain (CS) 4-fold,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.01953
更新日期:2017-05-01 00:00:00
abstract::The ATP-dependent SWR1 chromatin remodeling complex (SWR1-C) exchanges the histone H2A-H2B dimer with the H2A.Z-H2B dimer, producing variant nucleosomes. Arabidopsis thaliana SWR1-C contributes to the active transcription of many genes, but also to the repression of genes that respond to environmental and developmenta...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.00332
更新日期:2016-06-01 00:00:00
abstract::Plants have evolved complicated regulatory systems to control immune responses. Both positive and negative signaling pathways interplay to coordinate development of a resistance response with the appropriate amplitude and duration. AtNUDT7, a Nudix domain-containing protein in Arabidopsis (Arabidopsis thaliana) that h...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.103374
更新日期:2007-09-01 00:00:00
abstract::Nod Factor Receptor5 (NFR5) is an atypical receptor-like kinase, having no activation loop in the protein kinase domain. It forms a heterodimer with NFR1 and is required for the early plant responses to Rhizobium infection. A Rho-like small GTPase from Lotus japonicus was identified as an NFR5-interacting protein. The...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.197269
更新日期:2012-05-01 00:00:00
abstract::The relationship of triazine resistance to decreased plant productivity was investigated in Senecio vulgaris L. F(1) reciprocal hybrids were developed from pure-breeding susceptible (S) and resistant (R) lines. The four biotypes (S, S x R, R, R x S) were compared in terms of atrazine response, electron transport, carb...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.87.1.183
更新日期:1988-05-01 00:00:00
abstract::Although the Mutator (Mu) system is well characterized in maize (Zea mays), very little is known about this highly mutagenic system of transposons in other grasses. Mutator is regulated by the MuDR class of elements, which encodes two genes, one of which, mudrA, has similarity to a number of bacterial transposases. Ex...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.125.3.1293
更新日期:2001-03-01 00:00:00
abstract::Decomposition of 2-chloroethylphosphonic acid (Ethephon) was studied in dried films at various water vapor pressures (0.6 to 86.9 millimeters Hg, 3.2 to 93.9% relative humidity) and temperatures (20, 30, 40, and 50 C) at pH 6.3 and 7.0. The rate of decomposition could be determined equally well by [(14)C]Ethephon or e...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.63.3.474
更新日期:1979-03-01 00:00:00
abstract::Pollen germination, along with pollen tube growth, is an essential process for the reproduction of flowering plants. The germinating pollen with tip-growth characteristics provides an ideal model system for the study of cell growth and morphogenesis. As an essential step toward a detailed understanding of this importa...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.126375
更新日期:2008-11-01 00:00:00
abstract::Analysis of gene expression data generated by high-throughput microarray transcript profiling experiments has demonstrated that genes with an overall similar expression pattern are often enriched for similar functions. This guilt-by-association principle can be applied to define modular gene programs, identify cis-reg...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.136028
更新日期:2009-06-01 00:00:00
abstract::The mechanism of sucrose transport was investigated in plasma membrane (PM) vesicles isolated from spinach (Spinacia oleracea L.) leaves. PM vesicles were isolated by aqueous two-phase partitioning and were equilibrated in pH 7.8 buffer containing K(+). The vesicles rapidly accumulated sucrose in the presence of a tra...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.96.2.615
更新日期:1991-06-01 00:00:00
abstract::The objective of this study was to test the hypothesis that large cortical cell size (CCS) would improve drought tolerance by reducing root metabolic costs. Maize (Zea mays) lines contrasting in root CCS measured as cross-sectional area were grown under well-watered and water-stressed conditions in greenhouse mesocosm...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.250449
更新日期:2014-12-01 00:00:00