spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Related articles in JCS
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Search for Related Content
Journal of Cell Science 116, e1103 (2003)
Copyright © 2003 The Company of Biologists Limited

In this issue

Chromosome mobility in plants: polyploidy plays a part


During interphase, chromosomes occupy particular territories within the nucleus, and studies in fungi and animal cells indicate that their mobility is limited owing to anchoring of chromatin at sites such as nuclear pores. Much less is known about chromosome dynamics in plants. Naohiro Kato and Eric Lam have therefore for the first time directly measured interphase chromatin movements in a plant (Arabidopsis), using GFP-tagged chromatin (see p. 2195). They have also compared chromatin mobility in diploid guard cells and polyploid pavement cells in which DNA has undergone endoreduplication to see how polyploidy affects chromosome mobility. The authors observe that – as in animal cells – chromatin mobility in plant cells is restricted. Significantly, however, in the polyploid cells, there is much more freedom of movement: the area to which tagged loci are confined is about seven times bigger, despite a similar ratio of free space to DNA content in these nuclei. Kato and Lam suggest that this increased mobility underlies epigenetic mechanisms of gene regulation in endoreduplicated nuclei, arguing that it should generate distinct interchromosomal interactions.


Related articles in JCS:

Chromatin of endoreduplicated pavement cells has greater range of movement than that of diploid guard cells in Arabidopsis thaliana
Naohiro Kato and Eric Lam
JCS 2003 116: 2195-2201. [Abstract] [Full Text]  




This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Related articles in JCS
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Search for Related Content