Abscisic acid and gibberellin control seed germination through negative feedback regulation by MOTHER OF FT AND TFL1

... and GA play antagonistic roles in the regulation of seed germination, with the former inhibiting while the latter promoting seed germination In this thesis, we demonstrate that MOTHER OF FT AND ... Expression of MFT 76 Figure T-DNA Insertion Alleles of MFT 77 Figure Germination Rate of mft Mutants in Response to ABA 79 Figure Germination Rate of Seeds Overexpressing MFT ... Expression of MFT in Response to NaCl and ABA 91 Figure 17 Expression of MFT, ABI3, ABI4, and ABI5 in Wild-type Seeds after Imbibition .93 Figure 18 Expression of MFT in Wild-type and...

báo cáo khoa học: " Roles of arabidopsis WRKY18, WRKY40 and WRKY60 transcription factors in plant responses to abscisic acid and abiotic stress" doc

... WRKY40 and WRKY60 proteins indeed function in a complex pattern in plant responses to ABA and abiotic stresses The complex roles of the three WRKY transcription factors in plant biotic and abiotic ... al.: Roles of arabidopsis WRKY18, WRKY40 and WRKY60 transcription factors in plant responses to abscisic acid and abiotic stress BMC Plant Biology 2010 10:281 Submit your next manuscript to BioMed ... involvement of WRKY18, WRKY40 and WRKY60 in ABA responses ABA induction of WRKY18 and WRKY40 leads to increase in WRKY18 and WRKY40 proteins that form both homo- and heterocomplexes through physical interactions...

the types of feedback used by teachers of english at vietnam university of commerce and their effectiveness on improving oral presentation skills of the second year – english major students

... mainly used by teachers of English at VCU when their second year English – major students make oral presentations? How those types of feedback contribute to the improvement of oral presentation skills ... collect their opinions on the types of teachers feedback they received and the effectiveness of these types of feedback on improving students oral presentation skills Interviews were conducted ... general and on their oral presentation skills in particular 3.2.2 Teachers feedback and its effectiveness on improving students oral presentation skills The results of the questionnaire and interviews...

báo cáo khoa học: " Transcriptional regulatory programs underlying barley germination and regulatory functions of Gibberellin and abscisic acid" doc

... into molecular mechanism underlying conserved and divergent characteristics of barley and Arabidopsis germination The Early and Transient Regulation of Barley Germination Transcriptional changes ... regulatory programs underlying seed germination and germination related biological pathways, and GA and ABA regulation of seed germination at gene, pathway and systems levels Page 21 of 24 the ... programs underlying barley germination and regulatory functions of Gibberellin and abscisic acid BMC Plant Biology 2011 11:105 Page 24 of 24 Submit your next manuscript to BioMed Central and take full...

báo cáo khoa học: " Arabidopsis WRKY2 transcription factor mediates seed germination and postgermination arrest of development by abscisic acid" pdf

... important regulators of the transcripts of WRKY2 by ABA treatment Our results suggest that WRKY2 transcription factor mediates seed germination and postgermination developmental arrest by ABA Methods ... important regulator of postgermination developmental arrest mediated by ABA Postgermination proteolytic degradation of the essential ABI5 transcription factor is interrupted by perception of an increase ... ABA-dependent seed germination and postgermination growth arrest In this study, we report that wrky2- 1 and wrky2- 2 mutants are hypersensitive to ABA during germination and postgermination early...

Plant physiology - Chapter 23 Abscisic Acid: A Seed Maturation and Antistress Signal ppt

... in yeast Web Essay 23. 1 Heterophylly in Aquatic Plants Abscisic acid induces aerial-type leaf morphology in many aquatic plants Abscisic Acid: A Seed Maturation and Antistress Signal Chapter ... that dimerize and facilitate protein–protein interactions in a variety of signaling, transport, and enzymatic functions (see Abscisic Acid: A Seed Maturation and Antistress Signal Web Topic 23. 11) ... Abscisic Acid: A Seed Maturation and Antistress Signal VP1, a protein originally identified as an activator of ABA-induced gene expression, acts as a transcriptional repressor of some GA-regulated...

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Báo cáo lâm nghiệp: "Argan (Argania spinosa (L.) Skeels) seed germination under nursery conditions: Effect of cold storage, gibberellic acid and mother-tree genotype" docx

... synergetic effect of GA and cold in the case of argan seed germination From the results of this study, dormancy can be broken using GA or cold storage, but the presence of GA appears to speed up germination ... dumped-off seedling number (GC) and number deteriorated seeds (RS) and dormant seeds (DS) for four cold storage duration and two gibberellic acid treatments (GA) Values are means of two replications of ... Analyses of variance of emerged seedling number (ES), time to germination (TG), germination period (GP), pre-emergence dumpedoff seedling number (GC), number of deteriorated seeds (RS) and dormant seeds...

Báo cáo lâm nghiệp: "Effect of gibberellic acid and ethephon on the germination of European beech dormant and chilled beechnuts" pptx

... effect of gibberellic acid and ethephon on overcoming beechnut dormancy and stimulation of beechnut germination Materials and methods Seeds Three beechnut seedlots with a moisture content of 8.6–9.0% ... mg·l–1 of ethephon or 40 mg·l –1 of GA 3, – dormant seeds treated with 100 mg·l–1 of ethephon or 300 mg·l–1 of GA3, – dormant seeds treated with 120 mg·l–1 of ethephon or 1,000 mg·l–1 of GA3, – dormant ... apparent effect of different concentrations of ethephon or GA3 on germination capacity The only exception was the application of 1,000 mg·l–1 GA3 to dormant seeds that reduced the MGT to six weeks...

Báo cáo lâm nghiệp: "Germination response of alder and birch seeds to applied gibberellic acid and priming treatments in combination with chilling" ppt

... during chilling on dormancy release in FI and TMC seeds of alder and birch In addition, the eﬀect of priming at 15 ◦ C with or without PEG on the germination response of FI and TMC seeds without ... alder and birch seeds Table VI Percentage germination, including or excluding premature germination, in fully imbibed alder and birch seeds in response to chilling and priming Chilling duration ... MGT declined from 9.2 days for seeds that received no priming to 5.4 days for seeds that received days priming (Insets, Fig 2) The eﬀects of chilling and its interaction with priming and the...

Báo cáo lâm nghiệp: " Seed germination of Quercus robur, Q. pyrenaica and Q. ilex and the effects of smoke, heat, ash and charcoal" ppsx

... speaking, the temporal distribution of the germination of these three species of the genus Quercus is similar, despite the fact that Q ilex completes its germination cycle in 22 weeks and the other ... population of Q ilex in the South of France presented a similar distribution of germination The species of Quercus, which not have dormancy, have transient soil seed banks and one of the features of their ... the type of resprout, Q robur, Q pyrenaica and Q ilex are Pyrogeophyte species The first of these resprouts from the stump or epicormic buds and the other two resprout from the root as well Of...

Báo cáo lâm nghiệp:"Predicting the probability of seed germination in Pinus sylvestris L. and four competitor shrub species after fire" doc

... ºC min min min min min min min 94 95 93 90 92 RESULTS Germination results of Scots pine and the four undergrowth species (table I) indicate that the four obligatory seeder species (Pinus sylvestris, ... follows Tutin et al [47] Models of germination of competitor species 77 Table I Percentage of germination of Pinus sylvestris and four shrub species after different thermal chocks and control ... species show a high germination rate after thermal shock, there is a high probability that these species produce a reduction in the Models of germination of competitor species 79 Figure Germination...

Báo cáo lâm nghiệp: "Stomatal conductance and xylem-sap abscisic acid (ABA) in adult oak trees" pdf

... controlling stomatal opening Oak trees in these trees, and whether root-issued abscisic acid (ABA) was involved in this control Much accumulated evidence suggests that stomatal closure during drought ... underlining the fine tuning of stomatal conductance to leaf water potential in a feedforward regulation aimed at maintaining it close to, but slightly above, the cavitation threshold (Jones and ... site of abscisic acid in Commelina guard cells Plant Physiol 104, 11771183 Bertrand A, Robitaille G, Nadeau P, Boutin R (1994) Effects of soil freezing and drought stress on abscisic acid content...

Báo cáo lâm nghiệp: "Effects of high temperatures and ash on seed germination of two Iberian pines (Pinus nigra ssp salzmannii, P sylvestris var iberica)" pps

... 1973) and P nigra nigra / Pinus sylvestris / température (Orlandini and Malcoste, 1972) P halepensis and P pinaster, two common Iberian pines, have been characterized as typical pyrophytes, which ... stress on the germination of Pinus halepensis and P brutia seeds Seed Sci Technol 15, 163-174 Toole VK (1973) Effects of light, temperature and their interactions on the germination of seeds Seed ... Provincial, Alicante Martínez-Sánchez JJ, Marín A, Herranz JM, Ferrandis P, De las Heras J (1995) Effects of high temperatures on germination of Pinus halepensis Mill and P pinaster Aiton ssp...

báo cáo khoa học: " QTLs and candidate genes for desiccation and abscisic acid content in maize kernels" docx

... colocations involved QTLs for both desiccation and ABA content with genes encoding aquaporins (TIP2;1 on bin 2.04, TIP2;2 on bin 5.07 and PIP1;5, PIP2;1, PIP2;4 and PIP2;6 on bin 7.02) and LEA proteins ... colocations occurred for aquaporins, LEA and ABA-responsive genes and QTLs for kernel desiccation, indicating the potential interest of these genes for breeding and highlighting the necessity to ... between desiccation QTLs (blue) and growth QTLs (black) and between desiccation QTLs and ABA QTLs (pink) Gene locations in the QTL confidence interval are indicated close to their corresponding QTLs...

Structure and mechanism of hormone perception and signal transduction by abscisic acid receptors

... complex structures 96 Figure 38 Cartoon summary of the gate-latch-lock mechanism of ligand perception and signal transduction by the PYL ABA receptors 99 Figure 39 Mutations in the PYR1 latch and ... mechanism of signalling by ABA receptors 78 3.6 Selective pyrabactin activation and antagonism of PYLs 83 3.6.1 Mechanism of pyrabactin-mediated receptor activation 86 3.6.2 Mechanism of PYL2 ... inhibition of the phosphatase Hence, we identified a ‘gate-latch-lock’ mechanism of hormone binding and signal transduction by the PYL ABA receptor These structural observations were supported by interaction...

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