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Publications - Molecular Signal Processing

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Displaying results 171 to 180 of 350.

Publications

Flores, R.; Navarro, B.; Gago, S.; de la Peña, M. Chrysanthemum Chlorotic Mottle Viroid: a System for Reverse Genetics in the Family Avsunviroidae (Hammerhead Viroids) Plant Viruses 1, 27-32, (2007)

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Publications

Schwechheimer, C.; Calderón Villalobos, L.I. Cullin-containing E3 ubiquitin ligases in plant development Curr. Opin. Plant Biol. 7(6), 677-686, (2002)

In eukaryotes, the ubiquitinproteasome system participates in the control of signal transduction events by selectively eliminating regulatory proteins. E3 ubiquitin ligases specifically bind degradation substrates and mediate their poly-ubiquitylation, a prerequisite for their degradation by the 26S proteasome. On the basis of the analysis of the Arabidopsis genome sequence, it is predicted that there are more than 1000 E3 ubiquitin ligases in plants. Several types of E3 ubiquitin ligases have already been characterized in eukaryotes. Recently, some of these E3 enzymes have been implicated in specific plant signaling pathways.
Publications

Parry, G.; Calderón Villalobos, L.I.; Prigge, M.; Peret, B.; Dharmasiri, S.; Itoh, H.; Lechner, E.; Gray, W.M.; Bennett, M.; Estelle, M. Complex regulation of the TIR/AFB family of auxin receptors PNAS USA 106(52), 22540-22545, (2009)

Auxin regulates most aspects of plant growth and development. The hormone is perceived by the TIR1/AFB family of F-box proteins acting in concert with the Aux/IAA transcriptional repressors. Arabidopsis plants that lack members of the TIR1/AFB family are auxin resistant and display a variety of growth defects. However, little is known about the functional differences between individual members of the family. Phylogenetic studies reveal that the TIR1/AFB proteins are conserved across land plant lineages and fall into four clades. Three of these subgroups emerged before separation of angiosperms and gymnosperms whereas the last emerged before the monocot-eudicot split. This evolutionary history suggests that the members of each clade have distinct functions. To explore this possibility in Arabidopsis, we have analyzed a range of mutant genotypes, generated promoter swap transgenic lines, and performed in vitro binding assays between individual TIR1/AFB and Aux/IAA proteins. Our results indicate that the TIR1/AFB proteins have distinct biochemical activities and that TIR1 and AFB2 are the dominant auxin receptors in the seedling root. Further, we demonstrate that TIR1, AFB2, and AFB3, but not AFB1 exhibit significant posttranscriptional regulation. The microRNA miR393 is expressed in a pattern complementary to that of the auxin receptors and appears to regulate TIR1/AFB expression. However our data suggest that this regulation is complex. Our results suggest that differences between members of the auxin receptor family may contribute to the complexity of auxin response.
Publications

Chen, D.L.; Delatorre,.C.A.; Bakker, A.; Abel, S. Conditional identification of phosphate starvation-response mutants in <span style="font-style: italic;">Arabidopsis thaliana</span> Planta 211, 13 - 22, (2000)

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Publications

Pedranzani, H.; Sierro-de-Grado, R.; Vigliocco, A.; Miersch, O.; Abdala, G. Cold and water stresses produce changes in endogenous jasmonates in two populations of <i>Pinus pinaster</i> Ait Plant Growth Regul. 52, 111-116, (2007)

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Publications

Dussle, C.M.; Quint, M.; Xu, M.L.; Melchinger, A.E.; Lübberstedt, T. Conversion of AFLP fragments tightly linked to Scmv1 and Scmv2 into simple PCR-based markers Theor Appl Genet 105, 1190-1195, (2002)

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Publications

Hertel, S.; Knöfel, H.-D.; Kramell, R.; Miersch, O. Partial purification and characterization of a jasmonic acid conjugate cleaving amidohydrolase from the fungus <EM>Botryodiplodia theobromae</EM> FEBS Letters 407, 105-110, (1997)

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Publications

Görschen, E.; Dunaeva, M.; Reeh, I.; Wasternack, C. Overexpression of the jasmonate inducible 23 kDa protein (JIP 23) from barley in transgenic tobacco leads to the repression of leaf proteins FEBS Letters 419, 58-62, (1997)

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Publications

Abdala, G.; Castro, G.; Guinazu, M.; Tizio, R.; Miersch, O. Occurrence of jasmonic acid in organs of <EM>Solanum tuberosum</EM> L. c.v. Spunta and its effect on tuberization Plant Growth Reg. 19, 139-143, (1996)

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Publications

Kramell, R.; Atzorn, R.; Schneider, G.; Miersch, O.; Brückner, C.; Schmidt, J.; Sembdner, G.; Parthier, B. Occurrence and identification of jasmonic acid and its amino acid conjugates induced by osmotic stress in barley leaf tissue J. Plant Growth Reg. 14, 29-36, (1995)

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