Abstract:
:Control of folate homeostasis is essential to sustain the demand for one-carbon (C1) units that are necessary for major biological functions, including nucleotide synthesis and methylation reactions. In this study, we analyzed the genome-wide and metabolic adaptive response of Arabidopsis (Arabidopsis thaliana) cells to folate depletion induced by the antifolate methotrexate. Drug treatment induced a response typical to xenobiotic stress and important changes in folate content and composition. This resulted in a reduction of cell division and primary energy metabolism that was likely associated with perturbation of nucleotide homeostasis. Through a modification of serine metabolism, folate depletion also induced O-acetylserine accumulation and mimicked sulfur deficiency response. The major adaptive response to folate limitation concerned the composition of the folate pool rather than the intracellular level of cofactors. Thus, no significant change in the expression of genes involved in cofactor synthesis, degradation, or trafficking was observed. However, changes in the distribution of C1 derivative pools and increased expression levels for transcripts coding enzymes manipulating C1 moieties in plastids suggested a reorientation of C1 units toward the synthesis of purine and thymidylate. Also, no genomic or metabolic adaptation was built up to counterbalance the major impairment of the methyl index, which controls the efficiency of methylation reactions in the cell. Together, these data suggested that the metabolic priority of Arabidopsis cells in response to folate limitation was to shuttle the available folate derivatives to the synthesis of nucleotides at the expense of methylation reactions.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Loizeau K,De Brouwer V,Gambonnet B,Yu A,Renou JP,Van Der Straeten D,Lambert WE,Rébeillé F,Ravanel Sdoi
10.1104/pp.108.130336subject
Has Abstractpub_date
2008-12-01 00:00:00pages
2083-95issue
4eissn
0032-0889issn
1532-2548pii
pp.108.130336journal_volume
148pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::The role of polygalacturonase in leaf abscission was studied in explants of Phaseolus vulgaris L. cv. Red Kidney. Bean polygalacturonase was partially characterized and comparisons were made between the bean enzyme and previously reported higher plant polygalacturonases. Polygalacturonase isolated from bean leaf absci...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.63.6.1133
更新日期:1979-06-01 00:00:00
abstract::Glyoxylate at a concentration of 10 millimolar caused 50% inhibition of decarboxylation of 20 millimolar [1-(14)C]glycine and accompanying synthesis of serine in a mitochondria-enriched preparation from tobacco (Nicotiana tabacum var. John Williams Broadleaf) leaves. None of the other compounds tested including format...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.70.1.61
更新日期:1982-07-01 00:00:00
abstract::The concentrations of indole-3-acetic acid (IAA), naphthaleneacetic acid (NAA) and 2,4-dichlorophenoxyacetic acid (2,4-D) were followed for 35 days in cell-free liquid medium containing 100, 50, or 0% Murashige-Skoog (MS) salt base. Although the concentrations of NAA or 2,4-D remained constant the level of IAA decreas...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.81.3.934
更新日期:1986-07-01 00:00:00
abstract::Understanding the biochemistry of triacylglycerol (TAG) assembly is critical in tailoring seed oils to produce high-value products. Hydroxy-fatty acid (HFA) is one such valuable modified fatty acid, which can be produced at low levels in Arabidopsis (Arabidopsis thaliana) seed through transgenic expression of the cast...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.18.01409
更新日期:2019-03-01 00:00:00
abstract::In autogamous plants like Arabidopsis (Arabidopsis thaliana), stamen filament elongation must be finely regulated to ensure that anthers reach the pistil at the correct developmental stage. In this work, we studied the roles of Arabidopsis TEOSINTE BRANCHED1, CYCLOIDEA, PCF15 (TCP15), and related class-I TCP transcrip...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.01501
更新日期:2020-04-01 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::Most eukaryotic cells require peroxisomes, organelles housing fatty acid β-oxidation and other critical metabolic reactions. Peroxisomal matrix proteins carry peroxisome-targeting signals that are recognized by one of two receptors, PEX5 or PEX7, in the cytosol. After delivering the matrix proteins to the organelle, t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.01211
更新日期:2016-11-01 00:00:00
abstract::Terpenes are specialized plant metabolites that act as attractants to pollinators and as defensive compounds against pathogens and herbivores, but they also play an important role in determining the quality of horticultural food products. We show that the genome of cultivated apple (Malus domestica) contains 55 putati...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.208249
更新日期:2013-02-01 00:00:00
abstract::Calcium/calmodulin-dependent protein kinase (CCaMK) has been shown to play an important role in abscisic acid (ABA)-induced antioxidant defense and enhance the tolerance of plants to drought stress. However, its downstream molecular events are poorly understood. Here, we identify a NAC transcription factor, ZmNAC84, i...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.00168
更新日期:2016-07-01 00:00:00
abstract::Sporopollenin is the major component of the outer pollen wall (exine). Fatty acid derivatives and phenolics are thought to be its monomeric building blocks, but the precise structure, biosynthetic route, and genetics of sporopollenin are poorly understood. Based on a phenotypic mutant screen in Arabidopsis (Arabidopsi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.144469
更新日期:2009-10-01 00:00:00
abstract::Winter cultivars of rye (Secale cereale L., cv Musketeer) and wheat (Triticum aestivum L. cvs Kharkov and Monopol), but not a spring cultivar of wheat (Glenlea), grown at cold-hardening temperatures showed, at high irradiances, a higher proportion of oxidized to reduced primary, stable quinone receptor (QA) than did t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.101.1.245
更新日期:1993-01-01 00:00:00
abstract::The responses of isoprene emission rate to temperature are characterized by complex time-dependent behaviors that are currently not entirely understood. To gain insight into the temperature dependencies of isoprene emission, we studied steady-state and transient responses of isoprene emission from hybrid aspen (Populu...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.162081
更新日期:2010-11-01 00:00:00
abstract::Three aspartate aminotransferase isoenzymes were identified from extracts of carrot (Daucus carota L.) cell suspension cultures. These isoenzymes were separated by DEAE chromatography and were analyzed on native gradient polyacrylamide gels. The relative molecular weights of the isoenzymes were 111,000 +/- 5000, 105,0...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.92.3.587
更新日期:1990-03-01 00:00:00
abstract::The infectivity of Agrobacterium tumefaciens strain B6 was inhibited about 50% when these bacteria were inoculated on potato discs with equal viable cell counts of a weakly virulent strain of A. tumefaciens (B-48) or autoclaved strains of B6 or B-48. Inhibition by B-48 or autoclaved B6 could still be obtained when the...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.61.6.1031
更新日期:1978-06-01 00:00:00
abstract::Eukaryotic circadian clocks utilize the ubiquitin proteasome system to precisely degrade clock proteins. In plants, the F-box-type E3 ubiquitin ligases ZEITLUPE (ZTL), FLAVIN-BINDING, KELCH REPEAT, F-BOX1 (FKF1), and LOV KELCH PROTEIN2 (LKP2) regulate clock period and couple the clock to photoperiodic flowering in res...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.18.00331
更新日期:2018-07-01 00:00:00
abstract::Hormonal and plant factors regulating the development of the inhibited cotyledonary buds of Lycopersicon esculentum Mill. cv. ;Fireball' seedlings were studied. Excision of the immature plumular leaves of 5- to 20- millimeter length significantly stimulated bud development after 2 to 4 days, but excision of leaves exc...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.62.2.276
更新日期:1978-08-01 00:00:00
abstract::The local anesthetic dibucaine inhibited respiration-dependent contraction mediated by the K(+)/H(+) antiport system of isolated corn mitochondria. Respiration declined concurrently. Nigericin, an exogenous K(+)/H(+) exchanger, restored ion efflux in dibucaine-blocked corn mitochondria. It was concluded that dibucaine...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.77.4.909
更新日期:1985-04-01 00:00:00
abstract::The resistance to the diffusion of heat and water vapor external to a leaf, can be derived from measurement of the rate of change of the leaf temperature, after a sudden alteration of the intensity of irradiation. The theory of the method has been developed to accommodate the case of a leaf that is freely transpiring,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.42.5.651
更新日期:1967-05-01 00:00:00
abstract::The effect of photosynthetic photon flux density (PPFD) on photosynthetic response (A) to CO(2) partial pressures between 35 pascals and CO(2) compensation point (Gamma) was investigated, especially below PPFD saturation. Spinacia oleracea cv ;Atlanta,' Glycine max cv ;Clark,' and Arbutus unedo were studied in detail....
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.85.1.109
更新日期:1987-09-01 00:00:00
abstract::Pretreatment with pertussis toxin or microinjection of guanosine- 5[prime]-(3-thiotriphosphate) (GTP-[gamma]-S) into guard cells in peeled epidermis of Commelina communis L. promoted stomatal opening under subsaturating white light. Guanosine-5[prime]-(2-thiodiphosphate) (GDP-[beta]-S) and adenosine-5[prime]-(3-thiotr...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.102.1.95
更新日期:1993-05-01 00:00:00
abstract::Compatible and incompatible pollen tubes growing on detached Lilium longiflorum pistils which had been prelabeled with myoinositol-U-(14)C take up a portion of the label and utilize it for biosynthesis of tube wall substance. The label is transferred from pistil to pollen tubes apparently via the secretion products (e...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.45.1.92
更新日期:1970-01-01 00:00:00
abstract::Cold hardiness of leaf blades, leaf sheaths, culms, rhizomes, and leaf buds in wintering Sasa senanensis (Fr. et Sav.) Rehder, a dwarf bamboo, was studied paying special attention to the types of resistance mechanisms which were determined with differential thermal analysis. Coincidence of LT(25) (lethal temperature a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.75.1.196
更新日期:1984-05-01 00:00:00
abstract::In this study, the pathway of β-citraurin biosynthesis, carotenoid contents and the expression of genes related to carotenoid metabolism were investigated in two varieties of Satsuma mandarin (Citrus unshiu), Yamashitabeni-wase, which accumulates β-citraurin predominantly, and Miyagawa-wase, which does not accumulate ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.223297
更新日期:2013-10-01 00:00:00
abstract::Abscisic acid (ABA) is an important phytohormone regulating various cellular processes in plants, including stomatal opening and seed germination. Although protein phosphorylation via mitogen-activated protein kinases (MAPKs) has been suggested to be important in ABA signaling, the corresponding phosphatases are large...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.156109
更新日期:2010-07-01 00:00:00
abstract::Reactive oxygen species act as signaling molecules but can also directly provoke cellular damage by rapidly oxidizing cellular components, including lipids. We developed a high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry-based quantitative method that allowed us to discriminate b...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.125690
更新日期:2008-10-01 00:00:00
abstract::The phototropic response of Arabidopsis (Arabidopsis thaliana) is induced by the phototropin photoreceptors and modulated by the cryptochrome and phytochrome photoreceptors. Downstream of these photoreceptors, asymmetric lateral redistribution of auxin underlies the differential growth, which results in phototropism. ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.064444
更新日期:2005-09-01 00:00:00
abstract::The effect of sugars and metabolic inhibitors on the elongation of Zea mays root segments was analyzed by a rhizometer which records the elongation of each of 32 root segments at the same time. Galactose suppressed the acid-enhanced rapid elongation after a lag period of 1.5 hours, but it did not inhibit the slow elon...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.90.2.440
更新日期:1989-06-01 00:00:00
abstract::An automatic digital diffusion porometer circuit is described. The circuit is highly stable with respect to temperature and supply voltage. The device is capable of high timing accuracy over very short measurement intervals, so that measurements may be made rapidly without the danger of stomatal changes occurring duri...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.53.1.47
更新日期:1974-01-01 00:00:00
abstract::The optimum temperature of protein synthesis in wheat seedlings (Triticum aestivum L.), measured as (14)C-leucine incorporation, depends on the growing temperature. Plants grown at reduced temperature (4 C) reach their optimum at 27.5 C, whereas plants kept at 36 C have the highest rate of protein synthesis at 35 C. T...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.5.590
更新日期:1975-11-01 00:00:00
abstract::Water deficit during meiosis in pollen mother cells of wheat (Triticum aestivum L.) induces male sterility, which can reduce grain set by 40 to 50%. In plants stressed during meiosis and then rewatered, division of pollen mother cells proceeds normally but subsequent pollen development is arrested 3 or 4 d later. An i...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.1.137
更新日期:1996-05-01 00:00:00