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- W2131662406 abstract "Ashbya gossypii has a budding yeast-like genome but grows exclusively as multinucleated hyphae. In contrast to budding yeast where positioning of nuclei at the bud neck is a major function of cytoplasmic microtubules (cMTs), A. gossypii nuclei are constantly in motion and positioning is not an issue. To investigate the role of cMTs in nuclear oscillation and bypassing, we constructed mutants potentially affecting cMT lengths. Hyphae lacking the plus (+)end marker Bik1 or the kinesin Kip2 cannot polymerize long cMTs and lose wild-type nuclear movements. Interestingly, hyphae lacking the kinesin Kip3 display longer cMTs concomitant with increased nuclear oscillation and bypassing. Polymerization and depolymerization rates of cMTs are 3 times higher in A. gossypii than in budding yeast and cMT catastrophes are rare. Growing cMTs slide along the hyphal cortex and exert pulling forces on nuclei. Surprisingly, a capture/shrinkage mechanism seems to be absent in A. gossypii. cMTs reaching a hyphal tip do not shrink, and cMT +ends accumulate in hyphal tips. Thus, differences in cMT dynamics and length control between budding yeast and A. gossypii are key elements in the adaptation of the cMT cytoskeleton to much longer cells and much higher degrees of nuclear mobilities." @default.
- W2131662406 created "2016-06-24" @default.
- W2131662406 creator A5012297582 @default.
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- W2131662406 date "2010-11-01" @default.
- W2131662406 modified "2023-10-17" @default.
- W2131662406 title "Dynamics of Multiple Nuclei in<i>Ashbya gossypii</i>Hyphae Depend on the Control of Cytoplasmic Microtubules Length by Bik1, Kip2, Kip3, and Not on a Capture/Shrinkage Mechanism" @default.
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- W2131662406 doi "https://doi.org/10.1091/mbc.e10-06-0527" @default.
- W2131662406 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2965685" @default.
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