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Plant transcription factors on the move

An intriguing finding to recently emerge from plant research is that some transcription factors, such as the Arabidopsis thaliana floral identity protein LEAFY (LFY), can move between cells. On p. 3735, Wu et al. use functional GFP fusion proteins to investigate the mechanisms underlying such movement in the Arabidopsis shoot apical meristem (SAM) and floral primordia. Their findings reveal that the localization of a protein, such as that of LFY, can determine its ability to move – for example, nuclear localization appears to prevent untargeted protein movement – and that such movement probably occurs through simple diffusion. Differences in within-layer and between-layer protein movement are also evident, with between-layer movement being more prevalent in the SAM. Their findings lead the authors to propose that many macromolecules might move through the SAM by default, unless specifically retained through their subcellular localization.

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Modes of intercellular transcription factor movement in the Arabidopsis apex

Xuelin Wu, José R. Dinneny, Katrina M. Crawford, Yoon Rhee, Vitaly Citovsky, Patricia C. Zambryski, and Detlef Weigel
Development 2003 130: 3735-3745. [Abstract] [Full Text]  

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Related articles in Development Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content Social Bookmarking                         What's this?