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You searched for: Subject Nicotiana tabacum Remove constraint Subject: Nicotiana tabacum Subject term Helianthus annuus Remove constraint Subject term: Helianthus annuus
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1. Observations on enzymatically isolated, living and fixed embryo sacs in several angiosperm species

Author:
Zhou, C.; Yang, H.Y.
Source:
Planta 1985 v.165 no.2 pp. 225-231
ISSN:
0032-0935
Subject:
Antirrhinum majus; Helianthus annuus; Nicotiana tabacum; embryo sac; histochemistry
DOI:
10.1007/BF00395045
PubMed:
24241047

2. Stimulation by light of rapid pH regulation in the chloroplast stroma in vivo as indicated by CO2 solubilization in leaves

Author:
Hauser, M.; Eichelmann, H.; Oja, V.; Heber, U.; Laisk, A.
Source:
Plant physiology 1995 v.108 no.3 pp. 1059-1066
ISSN:
0032-0889
Subject:
Brassica oleracea; Helianthus annuus; Nicotiana tabacum; leaves; chloroplasts; pH; light; carbon dioxide; dose response; solubility; oxygen; gas exchange; quantitative analysis; bicarbonates
Abstract:
... Leaves of Brassica oleracea, Helianthus annuus, and Nicotiana rustica were exposed for 20 s to high concentrations of CO2. CO2 uptake by the leaf, which was very fast, was measured as a transient increase in the concentration of oxygen. Rapid solubilization of CO2 in excess of that which is physically dissolved in aqueous phases is proposed to be caused by bicarbonate formation in the stroma of ch ...

3. Temporal and spatial variations in the oxygen-18 content of leaf water in different plant species

Author:
Wang, X.F.; Yakir, D.
Source:
Plant, cell and environment 1995 v.18 no.12 pp. 1377-1385
ISSN:
0140-7791
Subject:
temporal variation; Citrus reticulata; Helianthus annuus; Gossypium hirsutum; Musa; transpiration; water; Nicotiana tabacum; spatial variation; chemical constituents of plants; stable isotopes; Citrus paradisi; oxygen; leaves
Abstract:
... Temporal variations in the delta 18 oxygen (delta 18O) content of water transpired by leaves during a simulated diurnal cycle fluctuated around the delta 18O content of the source water. Reconstructed variations in the delta 18O values of leaf water differed markedly from those predicted by conventional models. Even when transpiring leaves were maintained under constant conditions for at least 3 h ...
DOI:
10.1111/j.1365-3040.1995.tb00198.x

4. Importance of the chiral centers of jasmonic acid in the responses of plants. Activities and antagonism between natural and synthetic analogs

Author:
Holbrook, L.; Tung, P.; Ward, K.; Reid, D.M.; Abrams, S.; Lamb, N.; Quail, J.W.; Moloney, M.M.
Source:
Plant physiology 1997 v.114 no.2 pp. 419-428
ISSN:
0032-0889
Subject:
Helianthus annuus; Brassica napus; measurement; chemical degradation; dose response; jasmonic acid; gene expression; Triticum aestivum; Nicotiana tabacum; esters; stereochemistry; enzyme activity; chemical structure; seed germination; transgenic plants; cotyledons; proteinase inhibitors; reporter genes; chemical constituents of plants; chlorophyll; beta-glucuronidase
Abstract:
... The importance of the two chiral centers at C-3 and C-7 in the molecular structure of jasmonic acid in plant responses was investigated. We separated methyl jasmonate (MeJA) into (3R)- and (3S)-isomers with a fixed stereochemistry at C-3, but epimerization at C-7 is possible. The four isomers of the nonepimerizable analog 7-methyl MeJA were synthesized. These six esters and their corresponding aci ...

5. Proline- and hydroxyproline-rich gene products in the sexual tissues of flowers

Author:
Sommer-Knudsen, J.; Clarke, A.E.; Bacic, A.
Source:
Sexual plant reproduction 1997 v.10 no.5 pp. 253-260
ISSN:
0934-0882
Subject:
Helianthus annuus; Oryza sativa; Solanum tuberosum; hydroxyproline; genes; Brassica napus; extensin; proline; clones; gene expression; Nicotiana tabacum; protein composition; Arabidopsis thaliana; Zea mays; genetic code; Nicotiana alata; flowers; sexual reproduction; binding sites; Antirrhinum
DOI:
10.1007/s004970050095

6. Quantum yields and rate constants of photochemical and nonphotochemical excitation quenching. Experiment and model

Author:
Laisk, A.; Oja, V.; Rasulov, B.; Eichelmann, H.; Sumberg, A.
Source:
Plant physiology 1997 v.115 no.2 pp. 803-815
ISSN:
0032-0889
Subject:
Helianthus annuus; ion transport; light intensity; photoinhibition; measurement; carbon dioxide; dose response; Gossypium hirsutum; light harvesting complex; electron transfer; Sorghum bicolor; Nicotiana tabacum; leaves; Amaranthus cruentus; mathematical models; equations; net assimilation rate; temperature; prediction; cytochrome b
Abstract:
... Sunflower (Helianthus annuus L.), cotton (Gossypium hirsutum L.), tobacco (Nicotiana tabacum L.), sorghum (Sorghum bicolor Moench.), amaranth (Amaranthus cruentus L.), and cytochrome b6f complex-deficient transgenic tobacco leaves were used to test the response of plants exposed to different light intensities and CO2 concentrations before and after photoinhibition at 4000 micromoles photons m-2 s- ...

7. Screening of transgenic plants by multiplex PCR

Author:
Marie Mannerlöf; Paul Tenning
Source:
Plant molecular biology reporter 1997 v.15 no.1 pp. 38-45
ISSN:
0735-9640
Subject:
genetic transformation; Zea mays; Helianthus annuus; Petunia hybrida; Capsicum annuum; Cucumis melo; Lactuca sativa; shoots; Solanum tuberosum; transgenic plants; polymerase chain reaction; rapid methods; Cucurbita pepo; Nicotiana tabacum; Brassica napus; Beta vulgaris; Solanum lycopersicum var. lycopersicum
Abstract:
... A protocol is described, for the rapid screening of a large number of putative transgenic shoots. Genomic DNA is isolated and screened by PCR. To validate the purity of the DNA, PCR amplification is done with primers homologous to an endogenous gene. Multiplex PCR is used to screen for the transgenic shoots with two sets of primers, one set against the endogenous gene (internal control) and the ot ...
DOI:
10.1007/BF02772111

8. Dual regulation of a heat shock promoter during embryogenesis: stage-dependent role of heat shock elements

Author:
Almoguera, C.; Prieto-Dapens, P.; Jordano, J.
Source:
plant journal 1998 v.13 no.4 pp. 437-446
ISSN:
0960-7412
Subject:
heat shock proteins; plant development; Helianthus annuus; seeds; transgenic plants; enzyme activity; mutation; gene expression; histochemistry; Nicotiana tabacum; reporter genes; binding sites; embryogenesis; promoter regions; beta-glucuronidase
Abstract:
... Transgenic tobacco expression was analysed of chimeric genes with point mutations in the heat shock element (HSE) arrays of small heat shock protein (sHSP) gene from sunflower hp17.7 G4. The promotor was developmentally regulated during zygotic and responded to heat stress in vegetative tissues. Mutations in the HSE affected nucleotides crucial for human heat shock transcription factor 1 (HSF1) bi ...
DOI:
10.1046/j.1365-313X.1998.00044.x
PubMed:
9680992

9. Plastome engineering of ribulose-1,5-bisphosphate carboxylase/oxygenase in tobacco to form a sunflower large subunit and tobacco small subunit hybrid

Author:
Kanevski, I.; Maliga, P.; Rhoades, D.F.; Gutteridge, S.
Source:
Plant physiology 1999 v.119 no.1 pp. 133-141
ISSN:
0032-0889
Subject:
Nicotiana tabacum; Helianthus annuus; Synechococcus; plastids; genetic transformation; gene transfer; genetic engineering; genetic markers; genetic code; ribulose-bisphosphate carboxylase; photosynthesis; enzyme activity; transgenic plants; hybrids; genetic variation; amino acid sequences
Abstract:
... Targeted gene replacement in plastids was used to explore whether the rbcL gene thatcodes for the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase, the key enzyme of photosynthetic CO2 fixation, might be replaced with altered forms of the gene. Tobacco (Nicotiana tabacum) plants were transformed with plastid DNA that contained the rbcL gene from either sunflower (Helianthus annuus) ...
PubMed:
9880354
PubMed Central:
PMC32212

10. Molecular and expression analysis of a LIM protein gene family from flowering plants

Author:
Å. Eliasson; N. Gass; C. Mundel; R. Baltz; R. Kräuter; J.-L. Evrard; A. Steinmetz
Source:
Molecular genetics and genomics 2000 v.264 no.3 pp. 257-267
ISSN:
1617-4615
Subject:
Arabidopsis thaliana; interspecific variation; messenger RNA; Helianthus annuus; gynoecium; complementary DNA; stems; amino acid sequences; gene expression; Nicotiana tabacum; pollen; introns; leaves; plant proteins
Abstract:
... LIM-domain proteins participate in important cellular processes in eukaryotes, including gene transcription and actin cytoskeleton organization. They are predominantly found in animals, but have also been identified in yeast and plants. Following the characterization of a LIM-domain protein in sunflower pollen, we carried out an extensive search for these proteins in flowering plants. We have isol ...
DOI:
10.1007/s004380000312
PubMed:
11085265

11. SF21 is a protein which exhibits a dual nuclear and cytoplasmic localization in developing pistils of sunflower and tobacco

Author:
Krauter-Canham, R.; Bronner, R.; Steinmetz, A.
Source:
Annals of botany 2001 v.87 no.2 pp. 241-249
ISSN:
0305-7364
Subject:
pollination; messenger RNA; Helianthus annuus; immunohistochemistry; amino acid sequences; stigma; pollen tubes; Nicotiana tabacum; cytoplasm; nucleotide sequences; pollen; plant proteins
Abstract:
... SF21 was originally described as a pollen- and pistil-expressed protein from sunflower and tobacco. In pistils excised from these species, transcripts were detected in the stigma and in the transmitting tissue where they accumulated in an ovary-oriented increasing concentration gradient. We studied the cellular localization of the SF21 protein during various stages of pistil development as well as ...
DOI:
10.1006/anbo.2000.1319

12. Reversible heat-induced inactivation of chimeric beta-glucuronidase in transgenic plants

Author:
Almoguera, C.; Rojas, A.; Jordano, J.
Source:
Plant physiology 2002 v.129 no.1 pp. 333-341
ISSN:
0032-0889
Subject:
Helianthus annuus; Nicotiana tabacum; tobacco; transgenic plants; seedlings; seeds; plant proteins; heat shock proteins; recombinant proteins; gene expression; messenger RNA; biosynthesis; heat stress; beta-glucuronidase; genetic markers; protein products; enzyme activity; temperature; plant extracts; amino acid sequences; nucleotide sequences; chemical constituents of plants; transcription (genetics); stress response
Abstract:
... We compared the expression patterns in transgenic tobacco (Nicotiana tabacum) of two chimeric genes: a translational fusion to beta-glucuronidase (GUS) and a transcriptional fusion, both with the same promoter and 5'-flanking sequences of Ha hsp17.7 G4, a small heat shock protein (sHSP) gene from sunflower (Helianthus annuus). We found that immediately after heat shock, the induced expression from ...
PubMed:
12011363
PubMed Central:
PMC155896

13. Selective activation of the developmentally regulated Ha hsp17.6 G1 promoter by heat stress transcription factors

Author:
Rojas, A.; Almoguera, C.; Carranco, R.; Scharf, K.D.; Jordano, J.
Source:
Plant physiology 2002 v.129 no.3 pp. 1207-1215
ISSN:
0032-0889
Subject:
Helianthus annuus; Solanum peruvianum; promoter regions; plant proteins; tomatoes; heat stress; response elements; Nicotiana tabacum; transcription factors; mutation; oilseed crops; tobacco; heat shock proteins; protoplasts; transcriptional activation; transgenic plants; embryo (plant); Saccharomyces cerevisiae; binding sites; DNA-binding proteins; chemical constituents of plants
Abstract:
... Using two well-characterized heat stress transcription factors (Hsfs) from tomato (Lycopersicon peruvianum; LpHsfA1 and LpHsfA2), we analyzed the transcriptional activation of the Ha hsp17.6 G1 promoter in sunflower (Helianthus annuus) embryos. In this system, we observed transient promoter activation only with LpHsfA2. In contrast, both factors were able to activate mutant versions of the promote ...
PubMed:
12114574
PubMed Central:
PMC166514

14. Deciphering the 820 nm signal: redox state of donor side and quantum yield of Photosystem I in leaves

Author:
Oja, V.; Eichelmann, H.; Peterson, R.B.; Rasulov, B.; Laisk, A.
Source:
Photosynthesis research 2003 v.78 no.1 pp. 1-15
ISSN:
0166-8595
Subject:
far-red light; mathematical models; Helianthus annuus; transmittance; plant pigments; absorbance; cytochrome f; electron transfer; algorithms; Betula pendula; Nicotiana tabacum; leaves; oxidation; photosystem I; chlorophyll; plastocyanin; tobacco

15. Induction of the Hahsp17.7G4 promoter by root-knot nematodes: involvement of heat-shock elements in promoter activity in giant cells

Author:
Escobar, C.; Barcala, M.; Portillo, M.; Almoguera, C.; Jordano, J.; Fenoll, C.
Source:
Molecular plant-microbe interactions 2003 v.16 no.12 pp. 1062-1068
ISSN:
0894-0282
Subject:
Nicotiana tabacum; tobacco; transgenic plants; Helianthus annuus; promoter regions; heat shock proteins; recombinant DNA; reporter genes; beta-glucuronidase; gene induction; Meloidogyne incognita; root-knot nematodes; giant cells; root galls; roots; point mutation
Abstract:
... Root-knot nematodes feed from specialized giant cells induced in the plants that they parasitize. We found that the promoter of the Hahsp17.7G4 gene, which encodes a small heat-shock protein involved in embryogenesis and stress responses, directed GUS expression in tobacco galls induced by the root-knot nematode Meloidogyne incognita. In roots containing a GUS reporter fusion to the Hahsp17.7G4 pr ...
DOI:
10.1094/MPMI.2003.16.12.1062
PubMed:
14651339

16. Transformation of tobacco with genes encoding Helianthus tuberosus agglutinin (HTA) confers resistance to peach-potato aphid (Myzus persicae)

Author:
Chang, T.J.; Chen, L.; Chen, S.B.; Cai, H.Y.; Liu, X.; Xiao, G.F.; Zhu, Z.
Source:
Transgenic research 2003 v.12 no.5 pp. 607-614
ISSN:
0962-8819
Subject:
genetic transformation; messenger RNA; Helianthus annuus; genetic resistance; complementary DNA; transgenic plants; Agrobacterium radiobacter; Myzus persicae; gene expression; Nicotiana tabacum; agglutinins; pest resistance; tobacco
PubMed:
14601659

17. The CBEL elicitor of Phytophthora parasitica var. nicotianae activates defence in Arabidopsis thaliana via three different signalling pathways

Author:
Khatib, M.; Lafitte, C.; Esquerre-Tugaye, M.T.; Bottin, A.; Rickauer, M.
Source:
New phytologist 2004 v.162 no.2 pp. 501-510
ISSN:
0028-646X
Subject:
Arabidopsis thaliana; transgenic plants; resistance mechanisms; disease resistance; signal transduction; salicylic acid; jasmonic acid; ethylene; plant pathogenic fungi; fungal proteins; glycoproteins; Nicotiana tabacum; tobacco; Helianthus annuus; Zinnia violacea; Phaseolus vulgaris; Pisum sativum; peas; gene expression regulation; nucleotide sequences
DOI:
10.1111/j.1469-8137.2004.01043.x

18. Antisense Expression of a NBS-LRR Sequence in Sunflower (Helianthus annuus L.) and Tobacco (Nicotiana tabacum L.): Evidence for a Dual Role in Plant Development and Fungal Resistance

Author:
Hewezi, T.; Mouzeyar, S.; Thion, L.; Rickauer, M.; Alibert, G.; Nicolas, P.; Kallerhoff, J.
Source:
Transgenic research 2006 v.15 no.2 pp. 165-180
ISSN:
0962-8819
Subject:
Helianthus annuus; Nicotiana tabacum; tobacco; transgenic plants; gene expression; complementary DNA; antisense RNA; plant proteins; disease resistance; genetic resistance; downy mildew; Plasmopara halstedii; plant pathogenic fungi; blight; plant development; antisense DNA; nucleotide sequences; Phytophthora nicotianae var. parasitica
DOI:
10.1007/s11248-005-3518-3
PubMed:
16604458

19. Improved Resistance to Controlled Deterioration in Transgenic Seeds

Author:
Prieto-Dapena, Pilar; Castaño, Raúl; Almoguera, Concepción; Jordano, Juan
Source:
Plant physiology 2006 v.142 no.3 pp. 1102-1112
ISSN:
0032-0889
Subject:
Helianthus annuus; Nicotiana tabacum; crops; gene expression; heat shock proteins; heat stress; heat tolerance; imbibition; longevity; oligosaccharides; plant development; seed yield; seeds; tobacco; transcription factors
Abstract:
... We show that seed-specific overexpression of the sunflower (Helianthus annuus) HaHSFA9 heat stress transcription factor (HSF) in tobacco (Nicotiana tabacum) enhances the accumulation of heat shock proteins (HSPs). Among these proteins were HSP101 and a subset of the small HSPs, including proteins that accumulate only during embryogenesis in the absence of thermal stress. Levels of late embryogenes ...
DOI:
10.1104/pp.106.087817
PubMed:
16998084
PubMed Central:
PMC1630740

20. Photosystem II Cycle and Alternative Electron Flow in Leaves

Author:
Laisk, Agu; Eichelmann, Hillar; Oja, Vello; Rasulov, Bakhtier; Rämma, Heikko
Source:
Plant & cell physiology 2006 v.47 no.7 pp. 972-983
ISSN:
0032-0781
Subject:
Betula pendula; Helianthus annuus; Nicotiana tabacum; carbon dioxide; carboxylation; cell physiology; chlorophyll; detection limit; electron transfer; fluorescence; mesophyll; nitrites; oxaloacetic acid; oxygen; photons; photosystem II; ribulose-bisphosphate carboxylase; tobacco
Abstract:
... Sunflower (Helianthus annuus L.) and tobacco (Nicotiana tabacum L.) were grown in the laboratory and leaves were taken from field-grown birch trees (Betula pendula Roth). Chlorophyll fluorescence, CO₂ uptake and O₂ evolution were measured and electron transport rates were calculated, JC from the CO₂ uptake rate considering ribulose-1,5-bisphosphate (RuBP) carboxylation and oxygenation, JO from the ...
DOI:
10.1093/pcp/pcj070