Cortical microtubules optimize cell-wall crystallinity to drive unidirectional growth in Arabidopsis
Fujita , Miki; Himmelspach, Regina; Hocart, Charles; Williamson, Richard; Mansfield, Shawn; Wasteneys, Geoffrey O
The shape of plants depends on cellulose, a biopolymer that self-assembles into crystalline, inextensible microfibrils (CMFs) upon synthesis at the plasma membrane by multi-enzyme cellulose synthase complexes (CSCs). CSCs are displaced in directions predicted by underlying parallel arrays of cortical microtubules, but CMFs remain transverse in cells that have lost the ability to expand unidirectionally as a result of disrupted microtubules. These conflicting findings suggest that microtubules...[Show more]
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|Source:||The Plant Journal|
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