Dimensionless numbers to study cell wall deformation of stiff mutants of Phycomyces blakesleeanus.

ABSTRACT: The sporangiophores of Phycomyces blakesleeanus are large cylindrical aerial cells that elongate vertically at rates between 10 μm/min and 60 μm/min. Wild-type sporangiophores grow toward light, opposed to gravitational acceleration and away from solid barriers (tropic responses). Sporangiophores of stiff mutants C149 and C216 exhibit diminished tropic (bending) responses. Originally, it was thought that the altered genes affect the "stiffness" (elastic wall deformation) of the cell wall. Subsequent investigations employing the pressure probe demonstrated that the irreversible (plastic) wall deformation was smaller for the stiff mutants compared to wild type and could account for the diminished tropic responses. However, it was not shown whether the elastic wall deformation was altered in

SUBMITTER: Munoz CM 

PROVIDER: S-EPMC6933610 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature