Microtubule nucleation complex behavior is critical for cortical array homogeneity and xylem wall patterning.

ABSTRACT: Plant cell walls are versatile materials that can adopt a wide range of mechanical properties through controlled deposition of cellulose fibrils. Wall integrity requires a sufficiently homogeneous fibril distribution to cope effectively with wall stresses. Additionally, specific conditions, such as the negative pressure in water transporting xylem vessels, may require more complex wall patterns, e.g., bands in protoxylem. The orientation and patterning of cellulose fibrils are guided by dynamic cortical microtubules. New microtubules are predominantly nucleated from parent microtubules causing positive feedback on local microtubule density with the potential to yield highly inhomogeneous patterns. Inhomogeneity indeed appears in all current cortical array simulations that include microtubu

SUBMITTER: Jacobs B 

PROVIDER: S-EPMC9897462 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature