Jump to Main Content
PubAg
Main content area
Search
« Previous |
1 - 20 of 25
|
Next »
Search Results
- Author:
- Verdier, Jerome; Dessaint, Fabrice; Schneider, Charles; Abirached-Darmency, Mona
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 459-470
- ISSN:
- 0022-0957
- Subject:
- Medicago truncatula; abscisic acid; biosynthesis; endopolyploidy; filling period; genomics; histology; hormonal regulation; permeability; regulator genes; seed quality; testa; transcriptome; transcriptomics
- Abstract:
- ... The seed coat is involved in the determination of seed quality traits such as seed size, seed composition, seed permeability, and hormonal regulation. Understanding seed coat structure is therefore a prerequisite to deciphering the genetic mechanisms that govern seed coat functions. By combining histological and transcriptomic data analyses, cellular and molecular events occurring during Medicago ...
- DOI:
- 10.1093/jxb/ers304
- PubMed:
- 23125357
- PubMed Central:
- PMC3542040
-
http://dx.doi.org/10.1093/jxb/ers304
- Author:
- Rosero, Amparo; Žárský, Viktor; Cvrčková, Fatima
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 585-597
- ISSN:
- 0022-0957
- Subject:
- Arabidopsis thaliana; actin; cell growth; fluorescence microscopy; microtubules; morphogenesis; mutants; mutation; phenotype; polymerization; root growth; roots; seedlings
- Abstract:
- ... Plant cell growth and morphogenesis depend on remodelling of both actin and microtubule cytoskeletons. AtFH1 (At5g25500), the main housekeeping Arabidopsis formin, is targeted to membranes and known to nucleate and bundle actin. The effect of mutations in AtFH1 on root development and cytoskeletal dynamics was examined. Consistent with primarily actin-related formin function, fh1 mutants showed in ...
- DOI:
- 10.1093/jxb/ers351
- PubMed:
- 23202131
- PubMed Central:
- PMC3542049
-
http://dx.doi.org/10.1093/jxb/ers351
- Author:
- Schellenberger Costa, Benjamin; Jungandreas, Anne; Jakob, Torsten; Weisheit, Wolfram; Mittag, Maria; Wilhelm, Christian
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 483-493
- ISSN:
- 0022-0957
- Subject:
- Phaeodactylum tricornutum; acclimation; blue light; cell membranes; chloroplasts; gene expression regulation; light intensity; light quality; lutein; photostability; photosynthesis; proteins; proteome; red light; zeaxanthin epoxidase
- Abstract:
- ... The objective of the present study was to test the hypothesis that the acclimation to different light intensities in the diatom Phaeodactylum tricornutum is controlled by light quality perception mechanisms. Therefore, semi-continuous cultures of P. tricornutum were illuminated with equal amounts of photosynthetically absorbed radiation of blue (BL), white (WL), and red light (RL) and in combinati ...
- DOI:
- 10.1093/jxb/ers340
- PubMed:
- 23183259
- PubMed Central:
- PMC3542041
-
http://dx.doi.org/10.1093/jxb/ers340
- Author:
- Kobayashi, Natsuko I.; Tanoi, Keitaro; Hirose, Atsushi; Nakanishi, Tomoko M.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 507-517
- ISSN:
- 0022-0957
- Subject:
- cadmium; leaves; phloem; phosphorus; rice; root crown; roots; scintigraphy; seedlings; shoots; transpiration; vascular bundles
- Abstract:
- ... Participation of the intervascular transport system within the rice stem during cadmium (Cd) partitioning was investigated by characterizing 109Cd behaviour in the shoot. In addition, 45Ca, 32P, and 35S partitioning patterns were analysed for comparison with that of 109Cd. Each tracer was applied to the seedling roots for 15min, and the shoots were harvested either at 15min (i.e. immediately after ...
- DOI:
- 10.1093/jxb/ers344
- PubMed:
- 23202130
- PubMed Central:
- PMC3542043
-
http://dx.doi.org/10.1093/jxb/ers344
- Author:
- Polko, Joanna K.; Pierik, Ronald; van Zanten, Martijn; Tarkowská, Danuše; Strnad, Miroslav; Voesenek, Laurentius A. C. J.; Peeters, Anton J. M.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 613-624
- ISSN:
- 0022-0957
- Subject:
- Arabidopsis thaliana; biosynthesis; biotic stress; brassinosteroids; cell division; cell growth; environmental factors; ethylene; genes; hydroxylation; hypocotyls; mutants; petioles
- Abstract:
- ... Upward leaf movement, called hyponastic growth, is employed by plants to cope with adverse environmental conditions. Ethylene is a key regulator of this process and, in Arabidopsis thaliana, hyponasty is induced by this phytohormone via promotion of epidermal cell expansion in a proximal zone of the abaxial side of the petiole. ROTUNDIFOLIA3/CYP90C1 encodes an enzyme which was shown to catalyse C- ...
- DOI:
- 10.1093/jxb/ers356
- PubMed:
- 23264517
- PubMed Central:
- PMC3542051
-
http://dx.doi.org/10.1093/jxb/ers356
- Author:
- Jensen, Elaine; Robson, Paul; Norris, John; Cookson, Alan; Farrar, Kerrie; Donnison, Iain; Clifton-Brown, John
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 541-552
- ISSN:
- 0022-0957
- Subject:
- Miscanthus sacchariflorus; Saccharum; Sorghum (Poaceae); aboveground biomass; bioenergy; biomass production; domestication; energy crops; flowering; genotype; germplasm; grasses; hybrids; latitude; phenology; photoperiod; temperature; triploidy
- Abstract:
- ... Miscanthus sacchariflorus is a fast-growing C4 perennial grass that can naturally hybridize with M. sinensis to produce interspecific hybrids, such as the sterile triploid M.× giganteus. The creation of such hybrids is essential for the rapid domestication of this novel bioenergy crop. However, progress has been hindered by poor understanding of the environmental cues promoting floral transition i ...
- DOI:
- 10.1093/jxb/ers346
- PubMed:
- 23183254
- PubMed Central:
- PMC3542045
-
http://dx.doi.org/10.1093/jxb/ers346
- Author:
- Bose, Jayakumar; Xie, Yanjie; Shen, Wenbiao; Shabala, Sergey
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 471-481
- ISSN:
- 0022-0957
- Subject:
- Arabidopsis thaliana; salt tolerance; heme oxygenase (biliverdin-producing); gene overexpression; salinity; reactive oxygen species; ion transport; salt stress; potassium; mutants; mammals; plasma membrane; protons; sodium-hydrogen antiporter; roots; membrane potential
- Abstract:
- ... Reactive oxygen species (ROS) production is a common denominator in a variety of biotic and abiotic stresses, including salinity. In recent years, haem oxygenase (HO; EC 1.14.99.3) has been described as an important component of the antioxidant defence system in both mammalian and plant systems. Moreover, a recent report on Arabidopsis demonstrated that HO overexpression resulted in an enhanced sa ...
- DOI:
- 10.1093/jxb/ers343
- PubMed:
- 23307916
- PubMed Central:
- PMC3542042
-
http://dx.doi.org/10.1093/jxb/ers343
- Author:
- Nabity, Paul D.; Zavala, Jorge A.; DeLucia, Evan H.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 685-694
- ISSN:
- 0022-0957
- Subject:
- Nicotiana; fluorescence; gas exchange; jasmonic acid; linoleate 13S-lipoxygenase; electron transfer; herbivores; metabolites; carbon; photosynthesis; chlorophyll; leaves
- Abstract:
- ... Herbivory initiates a shift in plant metabolism from growth to defence that may reduce fitness in the absence of further herbivory. However, the defence-induced changes in carbon assimilation that precede this reallocation in resources remain largely undetermined. This study characterized the response of photosynthesis to herbivore induction of jasmonic acid (JA)-related defences in Nicotiana atte ...
- DOI:
- 10.1093/jxb/ers364
- PubMed:
- 23264519
- PubMed Central:
- PMC3542056
-
http://dx.doi.org/10.1093/jxb/ers364
- Author:
- Hébrard, Claire; Trap-Gentil, Marie-Véronique; Lafon-Placette, Clément; Delaunay, Alain; Joseph, Claude; Lefèbvre, Marc; Barnes, Steve; Maury, Stéphane
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 651-663
- ISSN:
- 0022-0957
- Subject:
- Arabidopsis; Beta vulgaris; DNA; DNA methylation; apical meristems; bolting; cold stress; environmental factors; epigenetics; flowers; genes; genotype; loci; messenger RNA; methyltransferases; mutants; nucleotide sequences; phenolic compounds; phenotype; precipitin tests; shoots; sugar beet; vernalization
- Abstract:
- ... Sugar beet (Beta vulgaris altissima) is a biennial root crop with an absolute requirement for cold exposure to bolt and flower, a process called vernalization. Global DNA methylation variations have been reported during vernalization in several plants. However, few genes targeted by DNA methylation during vernalization have been described. The objectives of this study were to identify differential ...
- DOI:
- 10.1093/jxb/ers363
- PubMed:
- 23307918
-
http://dx.doi.org/10.1093/jxb/ers363
- Author:
- Blackman, Benjamin K.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 421-431
- ISSN:
- 0022-0957
- Subject:
- Helianthus annuus; chromosome mapping; domestication; evolution; flowering; genes; loci; nucleotide sequences
- Abstract:
- ... Changes in flowering time and its regulation by environmental signals have played crucial roles in the evolutionary origin and spread of many cultivated plants. Recent investigations into the genetics of flowering time evolution in the common sunflower, Helianthus annuus, have provided insight into the historical and mechanistic dynamics of this process. Genetic mapping studies have confirmed phen ...
- DOI:
- 10.1093/jxb/ers359
- PubMed:
- 23267017
-
http://dx.doi.org/10.1093/jxb/ers359
- Author:
- Jia, Chengguo; Zhang, Liping; Liu, Lihong; Wang, Jiansheng; Li, Chuanyou; Wang, Qiaomei
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 637-650
- ISSN:
- 0022-0957
- Subject:
- Alternaria alternata; Solanum lycopersicum; biosynthesis; ethylene; fungi; jasmonic acid; pathogens; salicylic acid; tomatoes
- Abstract:
- ... Three phytohormone molecules – ethylene (ET), jasmonic acid (JA) and salicylic acid (SA) – play key roles in mediating disease response to necrotrophic fungal pathogens. This study investigated the roles of the ET, JA, and SA pathways as well as their crosstalk during the interaction between tomato (Solanum lycopersicum) plants and a necrotrophic fungal pathogen Alternaria alternata f. sp. lycoper ...
- DOI:
- 10.1093/jxb/ers360
- PubMed:
- 23264518
- PubMed Central:
- PMC3542053
-
http://dx.doi.org/10.1093/jxb/ers360
- Author:
- Yu, Hailan; Zhang, Fengxia; Wang, Guodong; Liu, Yule; Liu, Dong
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 599-612
- ISSN:
- 0022-0957
- Subject:
- plant development; Arabidopsis; biosynthesis; phenotype; protein synthesis; threonine; enzymes; microarray technology; deamination; gene expression regulation; transfer DNA; biochemical pathways; isoleucine; exons; mutants; protein content; cell proliferation; glucosinolates
- Abstract:
- ... Isoleucine is one of the branched-chain amino acids (BCAAs) that are essential substrates for protein synthesis in all organisms. Although the metabolic pathway for isoleucine has been well characterized in higher plants, it is not known whether it plays a specific role in plant development. In this study, an Arabidopsis mutant, lib (low isoleucine biosynthesis), that has defects in both cell prol ...
- DOI:
- 10.1093/jxb/ers352
- PubMed:
- 23230023
- PubMed Central:
- PMC3542050
-
http://dx.doi.org/10.1093/jxb/ers352
- Author:
- Krüger, Falco; Krebs, Melanie; Viotti, Corrado; Langhans, Markus; Schumacher, Karin; Robinson, David G.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 529-540
- ISSN:
- 0022-0957
- Subject:
- Arabidopsis; biosynthesis; calcium; ceramides; cytoplasmic inclusions; drugs; ions; mammals; protein synthesis; tonoplast; vacuoles
- Abstract:
- ... PDMP (d-l-threo-1-phenyl-2-decanoyl amino-3-morpholino-1-propanol) is a well-known inhibitor of glucosylceramide synthase (GCS), a key enzyme in sphingolipid biosynthesis. Through the resultant increase in ceramides which interact with mTOR and Beclin1 (Atg6), this drug is also known to induce macroautophagy in mammalian cells. This study investigated the response of Arabidopsis root cells to PDMP ...
- DOI:
- 10.1093/jxb/ers345
- PubMed:
- 23230024
- PubMed Central:
- PMC3542044
-
http://dx.doi.org/10.1093/jxb/ers345
- Author:
- Charlesworth, Deborah
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 405-420
- ISSN:
- 0022-0957
- Subject:
- dioecy; evolution; hermaphroditism; monoecy; sex chromosomes
- Abstract:
- ... It is now well established that plants have an important place in studies of sex chromosome evolution because of the repeated independent evolution of separate sexes and sex chromosomes. There has been considerable recent progress in studying plant sex chromosomes. In this review, I focus on how these recent studies have helped clarify or answer several important questions about sex chromosome evo ...
- DOI:
- 10.1093/jxb/ers322
- PubMed:
- 23125359
-
http://dx.doi.org/10.1093/jxb/ers322
- Author:
- Osakabe, Yuriko; Yamaguchi-Shinozaki, Kazuko; Shinozaki, Kazuo; Phan Tran, Lam-Son
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 445-458
- ISSN:
- 0022-0957
- Subject:
- Arabidopsis; abscisic acid; crops; environmental factors; genes; genetic engineering; growth and development; histidine kinase; osmotic stress; phosphorylation; plant growth; plant response; plasma membrane; protein-serine-threonine kinases; serine; stress response; threonine
- Abstract:
- ... Adverse environmental conditions have negative effects on plant growth and development. Receptor proteins on the plasma membrane sense various environmental stimuli and transduce them to downstream intra- and intercellular signalling networks. Receptor-like kinases (RLKs) play important roles in perceiving the extracellular ligands and activating the downstream pathway via phosphorylation of intra ...
- DOI:
- 10.1093/jxb/ers354
- PubMed:
- 23307915
-
http://dx.doi.org/10.1093/jxb/ers354
- Author:
- Gouhier-Darimont, Caroline; Schmiesing, André; Bonnet, Christelle; Lassueur, Steve; Reymond, Philippe
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 665-674
- ISSN:
- 0022-0957
- Subject:
- Arabidopsis thaliana; NADP (coenzyme); Pieris brassicae; elicitors; genes; immunity; insect eggs; insects; mutants; oviposition; receptors; salicylic acid
- Abstract:
- ... Insect egg deposition activates plant defence, but very little is known about signalling events that control this response. In Arabidopsis thaliana, oviposition by Pieris brassicae triggers salicylic acid (SA) accumulation and induces the expression of defence genes. This is similar to the recognition of pathogen-associated molecular patterns (PAMPs), which are involved in PAMP-triggered immunity ...
- DOI:
- 10.1093/jxb/ers362
- PubMed:
- 23264520
- PubMed Central:
- PMC3542055
-
http://dx.doi.org/10.1093/jxb/ers362
- Author:
- Drake, Paul L.; Froend, Ray H.; Franks, Peter J.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 495-505
- ISSN:
- 0022-0957
- Subject:
- stomatal movement; risk; correlation; stomatal conductance; carboxylation; gas exchange; water use efficiency; models; electron transfer; Banksia; stomata; water potential
- Abstract:
- ... Maximum and minimum stomatal conductance, as well as stomatal size and rate of response, are known to vary widely across plant species, but the functional relationship between these static and dynamic stomatal properties is unknown. The objective of this study was to test three hypotheses: (i) operating stomatal conductance under standard conditions (g op) correlates with minimum stomatal conducta ...
- DOI:
- 10.1093/jxb/ers347
- PubMed:
- 23264516
- PubMed Central:
- PMC3542046
-
http://dx.doi.org/10.1093/jxb/ers347
- Author:
- Aversano, Riccardo; Caruso, Immacolata; Aronne, Giovanna; Micco, Veronica De; Scognamiglio, Nunzia; Carputo, Domenico
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 625-635
- ISSN:
- 0022-0957
- Subject:
- guard cells; allopolyploidy; epigenetics; microsatellite repeats; Solanum commersonii; DNA methylation; diploidy; breeding; tetraploidy; autopolyploidy; potatoes; stomata; Solanum bulbocastanum
- Abstract:
- ... Polyploidy is very common within angiosperms, and several studies are in progress to ascertain the effects of early polyploidization at the molecular, physiological, and phenotypic level. Extensive studies are available only in synthetic allopolyploids. By contrast, less is known about the consequences of autopolyploidization. The current study aimed to assess the occurrence and extent of genetic, ...
- DOI:
- 10.1093/jxb/ers357
- PubMed:
- 23307917
- PubMed Central:
- PMC3542052
-
http://dx.doi.org/10.1093/jxb/ers357
- Author:
- Waters, Elizabeth R.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 391-403
- ISSN:
- 0022-0957
- Subject:
- Archaea; amino acids; bacteria; embryophytes; evolution; gene expression; heat shock proteins; heat tolerance; life history; pollen; seeds
- Abstract:
- ... Small heat shock proteins are a diverse, ancient, and important family of proteins. All organisms possess small heat shock proteins (sHSPs), indicating that these proteins evolved very early in the history of life prior to the divergence of the three domains of life (Archaea, Bacteria, and Eukarya). Comparing the structures of sHSPs from diverse organisms across these three domains reveals that de ...
- DOI:
- 10.1093/jxb/ers355
- PubMed:
- 23255280
-
http://dx.doi.org/10.1093/jxb/ers355
- Author:
- Gupta, Kapuganti J.; Brotman, Yariv; Segu, Shruthi; Zeier, Tatiana; Zeier, Jürgen; Persijn, Stefan T.; Cristescu, Simona M.; Harren, Frans J. M.; Bauwe, Hermann; Fernie, Alisdair R.; Kaiser, Werner M.; Mur, Luis A. J.
- Source:
- Journal of experimental botany 2013 v.64 no.2 pp. 553-568
- ISSN:
- 0022-0957
- Subject:
- Pseudomonas syringae pv. phaseolicola; Pseudomonas syringae pv. tabaci; amino acids; biomarkers; biosynthesis; cell death; fertilizers; fructose; gas chromatography; glucose; hypersensitivity; leaves; mass spectrometry; nitrate reductase; nitric oxide; nitrogen; nutrients; nutrition; pathogens; polyamines; salicylic acid; sucrose; tobacco
- Abstract:
- ... Different forms of nitrogen (N) fertilizer affect disease development; however, this study investigated the effects of N forms on the hypersensitivity response (HR)—a pathogen-elicited cell death linked to resistance. HR-eliciting Pseudomonas syringae pv. phaseolicola was infiltrated into leaves of tobacco fed with either [Formula] or [Formula]. The speed of cell death was faster in [Formula]-fed ...
- DOI:
- 10.1093/jxb/ers348
- PubMed:
- 23230025
- PubMed Central:
- PMC3542047
-
http://dx.doi.org/10.1093/jxb/ers348