Abstract:
:Plants use robust mechanisms to optimize organ size to prevailing conditions. Modulating the transition from cell division to elongation dramatically affects morphology and size. Although it is well established that auxin, cytokinin and brassinosteroid mediate these transitions, recent works show that the cytoskeleton, which is normally thought to act downstream of these hormones, plays a key role in this regulatory process. In particular, the microtubule-associated protein CLASP has a dual role in meristem maintenance. CLASP modulates levels of the auxin efflux carrier PIN2 by tethering SNX1 endosomes to cortical microtubules, which in turn fine tunes auxin maxima in the root apical meristem. CLASP is also required for transfacial microtubule bundle formation at the sharp cell edges, a feature strongly associated with maintaining the capacity for further cell division.
journal_name
Curr Opin Plant Bioljournal_title
Current opinion in plant biologyauthors
Ruan Y,Wasteneys GOdoi
10.1016/j.pbi.2014.11.003subject
Has Abstractpub_date
2014-12-01 00:00:00pages
149-158eissn
1369-5266issn
1879-0356pii
S1369-5266(14)00155-1journal_volume
22pub_type
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