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Reorganization of the growth pattern of Schizosaccharomyces pombe in invasive filament formation

journal contribution
posted on 2023-06-08, 10:04 authored by James Dodgson, William Brown, Carlos A Rosa, John Armstrong
The organization and control of polarized growth through the cell cycle of Schizosaccharomyces pombe, a single-celled eukaryote, have been studied extensively. We have investigated the changes in these processes when S. pombe differentiates to form multicellular invasive mycelia and have found striking alterations to the behavior of some of the key regulatory proteins. Cells at the tips of invading filaments are considerably more elongated than cells growing singly and grow at one pole only. The filament tip follows a strict direction of growth through multiple cell cycles. A group of proteins involved in the growth process and actin regulation, comprising Spo20, Bgs4, activated Cdc42, and Crn1, are all concentrated at the growing tip, unlike their distribution at both ends of single cells. In contrast, several proteins implicated in microtubule-dependent organization of growth, including Tea1, Tea4, Mod5, and Pom1, all show the opposite effect and are relatively depleted at the growing end and enriched at the nongrowing end, although Tea1 appears to continue to be delivered to both ends. A third group acting at different stages of the cell cycle, including Bud6, Rga4, and Mid1, localize similarly in filaments and single cells, while Nif1 shows a reciprocal localization to Pom1.

History

Publication status

  • Published

Journal

Eukaryotic Cell

ISSN

1535-9778

Publisher

American Society for Microbiology

Issue

11

Volume

9

Page range

1788-1797

Department affiliated with

  • Biochemistry Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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