Functional diversification of closely related ARF-GEFs in protein secretion and recycling

Article Abstract:

The closest homologue of GNOM in Arabidopsis thaliana is ivolved in endosomal recycling of PIN1, a polarly localized component of auxin efflux carriers, and this approach is extended to identify the ADP-ribosylation facto GTPase (ARF-GEF) responsible for endoplasmic reticulum (ER)-Golgi trafficking. The post-Golgi trafficking has evolved independently in the two major multicellular lineages, whereas the regulation by ARF-GEF of ER-Golgi traffic is already in place in unicellular eukaryotes.

Observations, Growth, Phenotype, Phenotypes, Arabidopsis thaliana, Electron microscopy, Membranes (Biology), Company growth

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The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots

Article Abstract:

The limited collection of the auxin which formulates the growth of plant also acts as an intermediary in creating the design in 'Arabidopsis' roots and manipulates the outgrowth and the formation of lateral root and shoots resulting primordia. It is shown that five PIN genes collectively control auxin distribution to regulate cell division and cell expansion in the primary root.

Research and Development in the Physical, Engineering, and Life Sciences, Plant Genetics, Auxin, Auxins, Cell research, Cytological research

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Efflux-dependent auxin gradients establish the apical-basal axis of Arabidopsis

Article Abstract:

An analysis of pin quadruple mutants identifies PIN-dependent transport as an essential part of the mechanism for embryo axis formation. The establishment of cell polarity, polar auxin efflux and local auxin response result in apical-basal axis formation of the embryo, and thus determine the axiality of the adult plant.

Plant embryology

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