Auxin Molecular Biology by Karin Ljung, Anna K. Hull, Mariusz Kowalczyk, Alan Marchant

By Karin Ljung, Anna K. Hull, Mariusz Kowalczyk, Alan Marchant (auth.), Catherine Perrot-Rechenmann, Gretchen Hagen (eds.)

The plant hormone auxin performs a primary position within the progress and improvement of vegetation. Researchers from around the globe are at the moment trying to get to the bottom of the molecular mechanisms in which auxin controls such varied strategies as mobilephone department, mobile elongation, and differentiation. learn questions about auxin motion are being addressed utilizing state of the art recommendations which are to be had to cellphone biologists, geneticists, molecular biologists, biochemists, and physiologists.

This textual content highlights a few of the significant subject matters that have been coated in a up to date workshop that was once in particular enthusiastic about examine into the mechanisms of auxin motion. The articles during this textual content supply a present replace of the examine findings on auxin biosynthesis, metabolism and delivery; evolutionary styles; auxin belief, sign transduction and body structure; auxin-regulated gene expression and protein degradation pathway in auxin responses; and cross-talk among auxin and different plant signalling pathways.

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Li, Y, Hagen, G. J. 1991. An auxin-responsive promoter is differentially induced by auxin gradients during tropisms. Plant Cell 3: 1167-1176. H. and Estelle, M. 1990. Growth and development of the axrl mutants of Arabidopsis. Plant Cell 2: 1071-1080. , Lioussanne, L. and Sandberg, G. 200L Developmental regulation of indole-3-acetic acid turnover in Scots pine seedlings. Plant PhysioL 125: 464-475. I. R 1985. Active auxin uptake by zucchini membrane vesicles: quantitation using ESR volume and LlpH detenninations.

In the more basic cytoplasm (pH around 7) IAAH dissociates and hence the resulting IAA -anion is 'trapped' in the cell due to its poor membrane permeability. Therefore, a specific efflux carrier was postulated and the polarity of the auxin flux was explained by its asymmetric distribution in cells. , 1985; Benning, 1986). Auxin influx and efflux pathways can be physiologically distinguished using auxin efflux inhibitors (AEI). These pharmacological tools arose from correlative exploration of structure-activity profiles of chemicals with auxin-like activity (Katekar and Geissler, 1977) and were demonstrated to inhibit efflux of auxin from cells and hypocotyl segments (reviewed in Rubery, 1990).

122: 925-932. Knutson VP. 1991. Cellular trafficking and processing of the insulin receptor. FASEB J. 5: 2130-2138. , Sugiyama, M. and Fukuda, H. 2000. A series of novel mutants of Arabidopsis thaliana that are defective in the formation of continuous vascular network: calling the auxin signal flow canalization hypothesis into question. Development 127: 31973204. B. and Ward, J. 1999. The dual function of sugar carriers: transport and sugar sensing. Plant Cell 11: 707- 726. Lehman, A. R. 1996. HOOKLESS1, an ethylene response gene, is required for differential cell elongation in the Arabidopsis hypocotyi.

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