salinity stress tolerance mechanisms in plants
Tài liệu Phytohormones and Abiotic Stress Tolerance in Plants ppt
Ngày tải lên :
14/02/2014, 12:20
... cytokinins (zeatin and zeatin riboside) are decreased in the xylem in response to drought stress Surprisingly, in the same study, it was found that the level of the aromatic cytokinin 6-benzylaminopurine ... three cytokinin receptors Although there are no reports linking cytokinin to a rapid response to cold stress, these results can suggest a role for cytokinin in the response to cold stress (Argueso ... receiver domain and a long C-terminal part containing a single-repeat MYB-type DNAbinding domain (Sakai et al 1998) called a GARP domain (Riechmann et al 2000) and the proline- and glutamine-rich...
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Environmental Adaptations and Stress Tolerance of Plants in the Era of Climate Change pptx
Ngày tải lên :
14/03/2014, 10:20
... osmolytes in plants subject to salt stress are GB, b-alaninebetaine, prolinebetaine, choline-O-sulphate, hydroxyprolinebetaine, and pipecolatebetaine (Ashraf and Abiotic Stress Responses in Plants: ... Acids, Proline, and Amides It has been reported that amino acids (such as alanine, arginine, glycine, serine, leucine, and valine, the nonprotein amino acids citrulline and ornithine (Orn)), ... very crucial role in stress tolerance in plants GR plays an important role in alleviating oxidative stress in plants as evidenced by increased activities of GR during oxidative stress (Contour-Ansel...
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Báo cáo khoa học: Overexpression of putative topoisomerase 6 genes from rice confers stress tolerance in transgenic Arabidopsis plants ppt
Ngày tải lên :
30/03/2014, 10:20
... protein involved in inducing double-strand breaks to initiate meiotic recombination in eukaryotes [8,9] Their existence has also been shown in plants [10–14] In contrast with other eukaryotes, plants ... ERD10, KIN1, and KIN2, analyzed in this study, under stress conditions The differentially expressed genes in transgenic plants that encode proteins that probably function in stress tolerance include ... genes in stress tolerance M Jain et al (Fig 10) The stress tolerance of the overexpressing plants may be enhanced, at least in part, by the highlevel accumulation of these gene products in response...
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ABIOTIC STRESS IN PLANTS – MECHANISMS AND ADAPTATIONS pptx
Ngày tải lên :
28/06/2014, 08:20
... response in plants 10 Abiotic Stress in Plants – Mechanisms and Adaptations subjected to ozone or inoculated with P setosa Indeed, in ozonated leaves fluorescence yield was lower in leaf veins than in ... Stress in Plants – Mechanisms and Adaptations information for the dissection of the plant response to salinity and try to find future applications for ameliorating the impact of salinity on plants, ... chilling-induced photoinhibition (Hogewoning & Harbinson, 2007) The individual leaves were divided into a shaded zone and two illuminated, chilled zones Chilling up to d in the dark did not influence...
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ABIOTIC STRESS RESPONSE IN PLANTS – PHYSIOLOGICAL, BIOCHEMICAL AND GENETIC PERSPECTIVES docx
Ngày tải lên :
28/06/2014, 08:20
... carboxyterminal calmodulin-like domain containing EF-hand calcium-binding sites plus a N-terminal protein kinase domain (Cheng et al., 2002) Thus, the signaling pathways activated in response to stress ... temperatures These findings indicate that these two molecules should be included in the category of integrative signals in abiotic and biotic stress response in plants Other well known players in plant ... enzymes involved in ROS detoxification in plants Also forward genetic screens have yielded significant insight into the metabolism and signalling in response to abiotic stress and in ROS signalling...
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Salt Stress Tolerance of Plants pptx
Ngày tải lên :
05/07/2014, 23:21
... acid derivatives (proline, glycine betaine, β-alanine betaine, proline betaine), tertiary amines 1,4,5,6-tetrahydro-2-mehyl-4-carboxyl pyrimidine), and sulfonium compounds (choline osulfate, dimethyl ... autoinhibition A 21 amino acid motif in the regulatory domain of SOS2 is the site where SOS3 interacts with the kinase and is the autoinhibitory domain of the kinase (Guo et al., 2001) Binding of SOS3 ... homeostasis Constitutive activation of yeast calcineurin in the host or in plants increases salt tolerance by predisposing the plants to survive the stress episode (Mendoza et al., 1996; Pardo et...
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Salt Stress Tolerance of Plants doc
Ngày tải lên :
06/07/2014, 02:20
... acid derivatives (proline, glycine betaine, β-alanine betaine, proline betaine), tertiary amines 1,4,5,6-tetrahydro-2-mehyl-4-carboxyl pyrimidine), and sulfonium compounds (choline osulfate, dimethyl ... autoinhibition A 21 amino acid motif in the regulatory domain of SOS2 is the site where SOS3 interacts with the kinase and is the autoinhibitory domain of the kinase (Guo et al., 2001) Binding of SOS3 ... homeostasis Constitutive activation of yeast calcineurin in the host or in plants increases salt tolerance by predisposing the plants to survive the stress episode (Mendoza et al., 1996; Pardo et...
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báo cáo khoa học: " The Arabidopsis pop2-1 mutant reveals the involvement of GABA transaminase in salt stress tolerance" pps
Ngày tải lên :
12/08/2014, 03:21
... shown in tobacco plants overexpressing a truncated GAD that lacks auto-inhibitory calmodulin binding site (GADC plants) [48] However, since the GABA accumulation observed in these transgenic plants ... was partly due to induction of the gene in shoots GUS staining pattern of NaCl-treated roots seemed to be more complex GUS staining was indeed sharply reinforced in the terminal Renault et al ... with different intensity Under control conditions, POP2 was mainly expressed in roots since no GUS staining was visible in shoots (figure 7A) whereas a strong staining was present in roots (figures...
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Overwintering Survival of Strawberry (Fragaria x ananassa): Proteins Associated with Low Temperature Stress Tolerance during Cold Acclimation in Cultivars
Ngày tải lên :
24/08/2014, 13:14
... understanding about the molecular basis for overwintering and freezing tolerance The introduction that follows highlights evidence supporting specific changes in metabolic machinery leading to an increased ... involved in detoxifying methylglyoxal Transgenic tobacco plants overexpressing glyoxalase enzymes resist an increase in methylglyoxal and maintain higher reduced glutathione levels under salinity ... RBPs often in conjunction with other common motifs or domains such as, Zinc-fingers, DEAD/DEAH box, and glycine-rich regions generating diverse RNA-binding proteins Another RNA-binding motif is...
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Molecular Farming of Antibodies in Plants
Ngày tải lên :
25/10/2013, 05:20
... in gray and light chains in pink Solid black lines indicate continuation of the polypeptide backbone (simple lines indicate the constant parts of the antibody, curly lines indicate the variable ... of Antibodies in Plants 39 Antigen Antigen Minibody Fab fragment Single chain Fv fragment (scFv) Camelid heavy chain Diabody Large single chain Bispecific scFv Single variable domain scFv-fusion ... subcellular targeting of the protein This is a general method to increase the yield of recombinant proteins because the compartment in which a recombinant protein accumulates in uences its folding, assembly,...
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Regulating Phytonutrient Levels in Plants – Toward Modification of Plant Metabolism for Human Health
Ngày tải lên :
25/10/2013, 05:20
... others being delphinidin, peonidin, pelargonidin, petunidin, and malvidin Of the flavonols, quercetin, kaempferol, myricetin, and isorhamnetin are common in fruits, quercetin being the predominant ... apigenin, luteolin), flavonols (e.g., quercetin, myricetin), flavanones (e.g., naringenin, hesperidin), catechins or flavanols (e.g., epicatechin, gallocatechin), anthocyanidins (e.g., cyanidin, pelargonidin), ... 12 Regulating Phytonutrient Levels in Plants 311 12.5.4 Metabolic Engineering of the Flavonoid Biosynthetic Pathway in Tomato There is a growing interest in producing food plants with increased...
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Tài liệu OXIDATIVE STRESS – MOLECULAR MECHANISMS AND BIOLOGICAL EFFECTS doc
Ngày tải lên :
12/02/2014, 16:20
... enormous interest and intensive research in this field that prompted us to develop this book idea In addition to interest in basic science, there is also a growing interest in medicine, agriculture ... specific systems in a highly controlled manner and used to defend organisms against diverse pathogens Finally, their signaling role was disclosed at the beginning of 1990, initially in coordination of ... lysine and N-alpha-acetyl arginine (Tessier et al., 2003) In addition, dihydroxyacetone can also form crosslinking triosidines Acetaldehyde was shown to react rapidly with proteins, producing...
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Tài liệu Báo cáo khoa học: Shaped by the environment – adaptation in plants Meeting report based on the presentations at the FEBS Workshop ‘Adaptation Potential in Plants’ 2009 (Vienna, Austria) pdf
Ngày tải lên :
18/02/2014, 11:20
... pathways involved in freezing tolerance in Arabidopsis Freezing tolerance increases in many plants in response to low, non-freezing temperature, a process known as cold acclimation Cold acclimation in ... has been using complementary experimental approaches, including transcriptome profiling, and forward and reverse genetics, to identify mechanisms involved in acquired thermotolerance in plants Transcriptome ... for thought by providing just such an interdisciplinary forum, in which research results, including novel concepts such as environmentally induced increases in mutation rates in bacteria and a heritable,...
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Tài liệu Báo cáo Y học: Studies on the nonmevalonate pathway of terpene biosynthesis The role of 2C-methyl-D -erythritol 2,4-cyclodiphosphate in plants docx
Ngày tải lên :
22/02/2014, 07:20
... due to long range coupling involving vicinal isoprenoid moieties Due to the line broadening, the precision of signal integration is substantially reduced However, within the experimental limits, ... the two competing deprotonation paths is illustrated in Fig for the predominant ES complex A of a sample of IPP carrying a 13 C label in its methyl group; a similar scheme involving a less stable ... by Kleinig & Beyer [37] Inner coronae of N pseudonarcissus (80 g) were homogenized in 250 mL of 67 mM Tris/HCl, pH 7.5, containing mM MgCl2, mM dithioerythritol, mM EDTA, 0.2% (w/v) polyvinylpyrrolidone...
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Uptake of organic chemicals in plants Human exposure assessment ppt
Ngày tải lên :
05/03/2014, 20:20
... applied in numerous studies It is well suited for determining distribution constants between environmental media and water, and for the determination of protein-binding affinities (Heringa and ... modelling the uptake of organic compounds into plants any easier However, combining models and experiments gain a lot of insight into the topic, and models can be used to help design and interpret ... coating SPME Sampling Kinetics SPME sampling kinetics were determined for different sample matrices in both static and shaken mode (Table 2) The sampling rates were on average 36% higher in the...
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Báo cáo khoa học: Arabidopsis thaliana CYP77A4 is the first cytochrome P450 able to catalyze the epoxidation of free fatty acids in plants potx
Ngày tải lên :
07/03/2014, 03:20
... monomer into the cutin In this context, it is interesting to note that inhibition studies allowed LeQueu et al [49] to demonstrate the involvement of a peroxygenase in the formation of cutin of ... generated in incubations of linoleic acid with microsomes from yeast expressing CYP77A4 Microsomes were incubated with 100 lM [1-14C]linoleic acid in the absence (A) or presence (B) of NADPH Incubations ... encoding a fatty acid x-hydroxylase, a putative epoxide hydrolase, several genes encoding enzymes involved in the synthesis of fatty acids in plastids, including the stearoyl acyl carrier protein...
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A review of heavy metal removal mechanisms in wetlands
Ngày tải lên :
15/03/2014, 23:06
... complexation It is the process whereby a single ligand containing two or more electron donor sites binds a single metal ion This is the single most important factor in reducing copper toxicity (Hodson et ... name phytochelatins Phytochelatins are heavy metal complexing peptides composed of different amino acids (r- glutamic acid - cysteine)n - glycine n = to 7, which are involved in detoxication ... cobalt tailings stockpiled as result of copper mining upstream at Kilembe mines prevented heavy metals from reaching the lake This in turn prevented heavy metals from accumulating in the biota...
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Báo cáo khoa học: Improvement of ecdysone receptor gene switch for applications in plants: Locusta migratoria retinoid X receptor (LmRXR) mutagenesis and optimization of translation start site pptx
Ngày tải lên :
15/03/2014, 23:20
... GAL4 DNA-binding domain with CfEcR ligand-binding domain cloned under the control of the 35S promoter in the pKYLX80 vector A fusion of VP16 activation domain and LmRXR ligand-binding domain cloned ... Kozak sequence Interestingly, an increase in the ligandinduced activity of this switch containing the improved Kozak sequence was not accompanied by an increase in background activity in the absence ... containing wild-type LmRXR and CH9, as a partner of CfEcR, in inducing reporter gene expression in tobacco protoplasts The results observed in protoplasts were confirmed in Arabidopsis transgenic plants...
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Báo cáo khoa học: Photosynthetic acclimation: State transitions and adjustment of photosystem stoichiometry – functional relationships between short-term and long-term light quality acclimation in plants ppt
Ngày tải lên :
16/03/2014, 06:20
... reduction in seed production, indicating synergistic effects when both kinases are lacking [9] Additional interesting results were obtained by some gene-expression studies The lack of LTR in the ... ferredoxin ⁄ thioredoxin system (Fig 3) The interplay between the kinases and their substrates integrates these varying redox signals and initiates appropriate molecular acclimation responses in the ... thylakoid-associated kinase leads to alteration of light harvesting in Arabidopsis J Biol Chem 276, 32169– 32176 Vainonen JP, Hansson M & Vener AV (2005) STN8 protein kinase in Arabidopsis thaliana is specific in...
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Báo cáo khoa học: Improvement of a monopartite ecdysone receptor gene switch and demonstration of its utility in regulation of transgene expression in plants pdf
Ngày tải lên :
16/03/2014, 06:20
... expression of foreign genes in plants Gene 61, 1–11 Tavva VS, Collins GB & Dinkins RD (2006) Targeted overexpression of the Escherichia coli MinC protein in higher plants results in abnormal chloroplasts ... Arabidopsis plants were transformed using the whole plant-dip method [42] Transgenic Arabidopsis plants were selected by germinating the seeds collected from the in ltrated plants on a medium containing ... expression in the absence of methoxyfenozide was indistinguishable from the background readings detected in the transgenic plants that were transformed with a two-hybrid gene switch containing wild-type...
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