By Tom Beeckman

Root improvement is a really fascinating new name in Blackwell Publishing's Annual Plant stories sequence (Series Editor Profesor Jeremy Roberts). The ebook includes contributions from writer teams dependent at the various World's formeost laboratories operating within the root improvement region. The book's editor Tom Beeckman, himself rather well recognized and revered for his paintings during this region, has drawn jointly a great set of middle leading edge experiences of the topic, offering a cutting-edge reference device for all these discovering during this sector.

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Additional resources for Root Development (Annual Plant Reviews, Volume 37)

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It would be interesting to determine the interplay between QC signaling and ARF10/ARF16 in distal stem cell maintenance. Possibly, the QC acts noncell autonomously to prevent ARF-mediated differentiation of the columella stem cells. 4 Chromatin and stem cell maintenance During the last decade, examples in various model organisms point toward an active role of chromatin-remodeling factors in maintaining the balance between stem cell identity and the path to differentiation (Meshorer and Misteli, 2006).

As mentioned above, a combination of four PLT genes are redundantly required for root development and stem cell maintenance. , 2007; Fig. 2c). When produced in restricted domains, the PLT proteins can only compensate partially for the loss of plt1plt2 indicating that the PLT concentration gradient instructs a different output in different regions. Expression of PLT2 in the proximal part of the meristem, for example, increases meristem prolongation but fails to maintain the stem cell niche in plt1plt2 mutants.

This situation has changed with the identification of the transport machinery, receptors and their interactors, response factors and other downstream effectors of the main classes of plant hormones. These discoveries will further help to understand the crosstalk between the different hormones in development. The understanding of Arabidopsis root development has taken a giant leap since the early nineties, when the root became appreciated as a model to study basic issues in developmental biology.

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