Phenotype ontology term - FYPO:0007434 - attenuated change in cell size at division upon shift to poor nitrogen source

Term summary

ID

FYPO:0007434

Name

attenuated change in cell size at division upon shift to poor nitrogen source

Ontology or CV name

Phenotype

Definition

A cell phenotype observed in the vegetative growth phase of the life cycle in which cells do not change the length at which they divide to the same extent as normal upon shifting from a good nitrogen source to a poor nitrogen source. Normally, cells divide at a smaller size after shifting to a poor nitrogen source; in mutants the size difference is less pronounced between media with good versus poor nitrogen sources. Good (or rich) nitrogen sources are distinguished from poor sources based on how readily nitrogen is assimilated into cellular metabolism. In microorganisms, good nitrogen sources generally support higher cell population growth rates than poor sources. In fission yeast, cells divide at a smaller size when grown on a poor nitrogen source than in nitrogen-rich media; proline is commonly used as a poor nitrogen source.

Parents

• is_a abnormal mitotic cell cycle regulation upon nitrogen source shift

Annotation