Literature DB >> 19392685

The cell morphogenesis gene SPIRRIG in Arabidopsis encodes a WD/BEACH domain protein.

Rainer Saedler1, Marc Jakoby, Birger Marin, Elena Galiana-Jaime, Martin Hülskamp.   

Abstract

WD40/BEACH domain proteins have been implicated in membrane trafficking and membrane composition events in Dictyostelium and Drosophila. In this paper, we show that the Arabidopsis SPIRRIG (SPI) gene encodes a WD40/BEACH domain protein. The cellular analysis revealed fragmented vacuoles in root hairs similar to those found in the corresponding Dictyostelium mutants, suggesting a related cellular function. The phenotypic analysis revealed that spi mutants share all phenotypic aspects of mutants in the actin polymerization-regulating ARP2/3 pathway, including distorted trichomes, less lobing of epidermal pavement cells, disconnected epidermal cells on various organs, and shorter root hairs. This complete phenotypic overlap suggests that this WD40/BEACH domain protein and the actin-regulating ARP2/3 pathway are involved in similar growth processes.

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Year:  2009        PMID： 19392685     DOI： 10.1111/j.1365-313X.2009.03900.x

Source DB:  PubMed          Journal:  Plant J        ISSN： 0960-7412            Impact factor:   6.417


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